Many people believe the glare from snow causes snow-blindness． Yet, dark glasses or not,they find themselves suffering from headaches and watering eyes, and even snow-blindness, when exposed to several hours of "snow light"． The United States Army has now
题目
Many people believe the glare from snow causes snow-blindness． Yet, dark glasses or not,they find themselves suffering from headaches and watering eyes, and even snow-blindness, when exposed to several hours of "snow light"．
The United States Army has now determined that glare from snow does not cause snow-
blindness in troops in a snow-covered country． Rather, a man's eyes frequently find nothing to focus on in a broad expanse of barren snow-covered terrain． So his gaze continually shifts and jumps back and forth over the entire landscape in search of something to look at． Finding nothing,hour after hour, the eyes never stop searching and the eyeballs become sore and the eye musclesache． Nature offsets this irritation by producing more and fluid which covers the eyeball． The fluid covers the eyeball in increasing quantity until vision blurs, then is observed, and the result is
total, even though temporary, snow-blindness．
Experiments led the Army to a simple method of overcoming this problem． Scouts ahead of a main body of troops are trained to shake snow from evergreen bushes, creating a dotted line as they cross completely snow-covered landscape． Even the scouts themselves throw lightweight, dark colored objects ahead on which they too can focus． The men following can then see something．Their gaze is arrested． Their eyes focus on a bush and having found something to see, stop scouring the snow-blanketed landscape． By focusing their attention on one object at a time, the men can cross the snow without becoming hopelessly snow-blind or lost． In this way the problem of crossing a solid white terrain is overcome．
?The scouts shake snow from evergreen bushes in order to__________ ．
The United States Army has now determined that glare from snow does not cause snow-
blindness in troops in a snow-covered country． Rather, a man's eyes frequently find nothing to focus on in a broad expanse of barren snow-covered terrain． So his gaze continually shifts and jumps back and forth over the entire landscape in search of something to look at． Finding nothing,hour after hour, the eyes never stop searching and the eyeballs become sore and the eye musclesache． Nature offsets this irritation by producing more and fluid which covers the eyeball． The fluid covers the eyeball in increasing quantity until vision blurs, then is observed, and the result is
total, even though temporary, snow-blindness．
Experiments led the Army to a simple method of overcoming this problem． Scouts ahead of a main body of troops are trained to shake snow from evergreen bushes, creating a dotted line as they cross completely snow-covered landscape． Even the scouts themselves throw lightweight, dark colored objects ahead on which they too can focus． The men following can then see something．Their gaze is arrested． Their eyes focus on a bush and having found something to see, stop scouring the snow-blanketed landscape． By focusing their attention on one object at a time, the men can cross the snow without becoming hopelessly snow-blind or lost． In this way the problem of crossing a solid white terrain is overcome．
?The scouts shake snow from evergreen bushes in order to__________ ．
A.give the men behind something to see
B.beautify the landscape
C.warm themselves in the cold
D.prevent the men behind from losing their way
B.beautify the landscape
C.warm themselves in the cold
D.prevent the men behind from losing their way
相似考题
更多“Many people believe the glare from snow causes snow-blindness． Yet, dark glasses or not,they find themselves suffering from headaches and watering eyes, and even snow-blindness, when exposed to sever”相关问题
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第1题：
People suffering from accidents incurred at work or from occupational diseases receive preferential treatment by the social security service compared with those suffering from civil accidents and ordinary illnesses.
正确答案：本题考核知识点：现在分词作定语、过去分词作定语、过去分词作状语的译法
该句的主干是people … receive preferential treatment。其中suffering from accidents …or from occupational diseases是现在分词作定语修饰主语people，考生在翻译时可以按照汉语的习惯，将定语放到名词前面。incurred at work是过去分词作定语，修饰这一词组前的accidents，可意译为“因工受伤”。compared with those suffering … 是过去分词结构作状语，翻译时，状语部分可放在句首，译为“与．．．相比”。此外，考生应将该部分中those一词所指代的对象译出，以免产生歧义。联系上下文可得，它是泛指代词，可译为“人们”。Those 后面的现在分词词组仍然充当定语。
词汇：Occupational diseases“职业病”；preferential treatment“优待”；incur“招致”；social security service社会保障服务；civil“市民的，公民的”，这里与work 相对，译为“个人的”。
译文：与那些遭受个人意外和忍受普通疾病折磨的人相比，因公受伤或者患有职业病的人在社会保障服务方面享有优待。
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第2题：
Many people believe the glare from snow causes snow-blindness． Yet, dark glasses or not,they find themselves suffering from headaches and watering eyes, and even snow-blindness, when exposed to several hours of "snow light"．
The United States Army has now determined that glare from snow does not cause snow-
blindness in troops in a snow-covered country． Rather, a man's eyes frequently find nothing to focus on in a broad expanse of barren snow-covered terrain． So his gaze continually shifts and jumps back and forth over the entire landscape in search of something to look at． Finding nothing,hour after hour, the eyes never stop searching and the eyeballs become sore and the eye musclesache． Nature offsets this irritation by producing more and fluid which covers the eyeball． The fluid covers the eyeball in increasing quantity until vision blurs, then is observed, and the result is
total, even though temporary, snow-blindness．
Experiments led the Army to a simple method of overcoming this problem． Scouts ahead of a main body of troops are trained to shake snow from evergreen bushes, creating a dotted line as they cross completely snow-covered landscape． Even the scouts themselves throw lightweight, dark colored objects ahead on which they too can focus． The men following can then see something．Their gaze is arrested． Their eyes focus on a bush and having found something to see, stop scouring the snow-blanketed landscape． By focusing their attention on one object at a time, the men can cross the snow without becoming hopelessly snow-blind or lost． In this way the problem of crossing a solid white terrain is overcome．
Snow-blindness may be avoided by__________A.concentrating to the solid white terrain
B.searching for something to look at in snow-covered terrain
C.providing the eyes with something to focus on
D.covering the eyeballs with fluid答案：C解析：根据第二段可知，雪盲症的发生最根本的原因是茫茫雪原上看不到除了白色以外的颜色，因而眼睛疲劳，因此提供可以聚焦的物体是根本预防办法，故选C。 -
第3题：
Many people believe the glare from snow causes snow-blindness． Yet, dark glasses or not,they find themselves suffering from headaches and watering eyes, and even snow-blindness, when exposed to several hours of "snow light"．
The United States Army has now determined that glare from snow does not cause snow-
blindness in troops in a snow-covered country． Rather, a man's eyes frequently find nothing to focus on in a broad expanse of barren snow-covered terrain． So his gaze continually shifts and jumps back and forth over the entire landscape in search of something to look at． Finding nothing,hour after hour, the eyes never stop searching and the eyeballs become sore and the eye musclesache． Nature offsets this irritation by producing more and fluid which covers the eyeball． The fluid covers the eyeball in increasing quantity until vision blurs, then is observed, and the result is
total, even though temporary, snow-blindness．
Experiments led the Army to a simple method of overcoming this problem． Scouts ahead of a main body of troops are trained to shake snow from evergreen bushes, creating a dotted line as they cross completely snow-covered landscape． Even the scouts themselves throw lightweight, dark colored objects ahead on which they too can focus． The men following can then see something．Their gaze is arrested． Their eyes focus on a bush and having found something to see, stop scouring the snow-blanketed landscape． By focusing their attention on one object at a time, the men can cross the snow without becoming hopelessly snow-blind or lost． In this way the problem of crossing a solid white terrain is overcome．
?When the eyes are sore tears are produced toA.clear the vision
B.remedy snow-blindness
C.ease the irritation
D.loosen the muscles答案：C解析：根据第二段“the eyebaHs become sore…Nature offsets this irritation by producing more and fluid which covers the eyebaH”可知，眼泪的分泌是为了缓和刺激．故选C。 -
第4题：
The man __________ the dark glasses fled away from the spot very rapidly.
A.in
B.at
C.of
D.by答案：A解析：考查介词用法。分析句子成分，可知__________thedark glasses作后置定语，修饰theman，该句意思是“那个戴墨镜的男人快速地逃离了现场”。介词in除了表示“在……里面”．还表示穿戴．不仅可用于穿衣，还可以表示戴眼镜、戴帽子、留辫子等。如：aman in glasses戴眼镜的男人，aboy in hat戴帽子的男孩，a girlin pigtails梳辫子的姑娘。 -
第5题：
Many people believe the glare from snow causes snow-blindness. Yet, dark glasses or not, they find themselves suffering from headaches and watering eyes, and even snow-blindness, when exposed to several hours of "snow light".
The United States Army has now determined that glare from snow does not cause snow- blindness in troops in a snow-covered country. Rather, a man's eyes frequently find nothing to focus on in a broad expanse of barren snow-covered terrain. So his gaze continually shifts and jumps back and forth over the entire landscape in search of something to look at. Finding nothing, hour after hour, the eyes never stop searching and the eyeballs become sore and the eye muscles ache. Nature offsets this irritation by producing more and fluid which covers the eyeball. The fluid
covers the eyeball in increasing quantity until vision blurs,then is observed, and the result is total, even though temporary, snow-blindness.
Experiments led the Army to a simple method of overcoming this problem. Scouts ahead of a main body of troops are trained to shake snow from evergreen bushes, creating a dotted line as they cross completely snow-covered landscape. Even the scouts themselves throw lightweight, dark colored objects ahead on which they too can focus. The men following can then see something. Their gaze is arrested. Their eyes focus on a bush and having found something to see, stop scouring the snow-blanketed landscape. By focusing their attention on one object at a time, the men can cross the snow without becoming hopelessly snow-blind or lost. In this way the problem of crossing a solid white terrain is overcome.
Snow-blindness may be avoided by_________.A. concentrating to the solid white terrain
B. searching for something to look at in snow-covered terrain
C. providing the eyes with something to focus on
D. covering the eyeballs with fluid答案：C解析：根据第二段可知，雪盲症的发生最根本的原因是茫茫雪原上没有除了白色以外的颜色
可以看到．因而眼睛疲劳，因此提供可以聚焦的物体是根本预防办法，故选C。 -
第6题：
Many people believe the glare from snow causes snow-blindness. Yet, dark glasses or not, they find themselves suffering from headaches and watering eyes, and even snow-blindness, when exposed to several hours of "snow light".
The United States Army has now determined that glare from snow does not cause snow- blindness in troops in a snow-covered country. Rather, a man's eyes frequently find nothing to focus on in a broad expanse of barren snow-covered terrain. So his gaze continually shifts and jumps back and forth over the entire landscape in search of something to look at. Finding nothing, hour after hour, the eyes never stop searching and the eyeballs become sore and the eye muscles ache. Nature offsets this irritation by producing more and fluid which covers the eyeball. The fluid
covers the eyeball in increasing quantity until vision blurs,then is observed, and the result is total, even though temporary, snow-blindness.
Experiments led the Army to a simple method of overcoming this problem. Scouts ahead of a main body of troops are trained to shake snow from evergreen bushes, creating a dotted line as they cross completely snow-covered landscape. Even the scouts themselves throw lightweight, dark colored objects ahead on which they too can focus. The men following can then see something. Their gaze is arrested. Their eyes focus on a bush and having found something to see, stop scouring the snow-blanketed landscape. By focusing their attention on one object at a time, the men can cross the snow without becoming hopelessly snow-blind or lost. In this way the problem of crossing a solid white terrain is overcome.
The scouts shake snow from evergreen bushes in order to_________.A. give the men behind something to see
B. beautify the landscape
C. warm themselves in the cold
D. prevent the men behind from losing their way答案：A解析：根据第三段“The men following Can then see somethin9．Their gaze is arrested”可知，侦查
员摇落树上的雪是为了使后面的部队有物体可以聚焦。从而避免雪盲症的发生，故选A。 -
第7题：
There are many stereotypes about the character of people in various parts of the United States．In the Northeast and Midwest,people are said to be closed and private．In the South and West,however,they are often thought of as being more open and hospitable．Ask someone from St．Louis where the nearest sandwich shop is,and he or she will politely give you directions．A New Yorker might eye you at first and after deciding it is safe to talk to you,might give you a rather unexpected explanation．A person from Georgia might be very kind about directing you and even suggest some different places to eat．A Texan just might take you to the place and treat you to lunch.
American stereotypes are abundant．New Englanders are often thought of as being friendly and helpful．Southerners are known for their hospitality and warmth．People from the western part of the United States are often considered very outgoing．These differences in character can be traced to different factors such as climate,living conditions,and historical development.
When travelling from place to place,Americans themselves are often surprised at the differing degrees of friendliness in the United States.
The main idea of the passage is__.A.even Americans are surprised at the big differences among themselves
B.there are many differences in character in different parts of the USA
C.there are many reason for the differences
D.stereotypes about people are not necessarily true答案：B解析：第一个句子中写道“many stereotypes”，即可知应选B项。 -
第8题：
资料： The poverty line is the minimum income that people need for an acceptable standard of living. People with incomes below the poverty line are considered poor. Economists study the causes of poverty in order to find solutions to the problem.
As the general standard of living in the country rises, the poverty line does, too. Therefore, even with today’s relatively high standard of living, about 10 percent of the people in the United States are below the poverty line. However, if these people had stable jobs, they could have an acceptable standard of living. Economists suggest several reasons why poor people do not have jobs.
For one thing, more than half of the poor people in the United States are not qualified to work. Over 40 percent of the poor. People are children. By law, children less than 16 years old cannot work in many industries. A large number of poor people are Old. Many companies do not hire people over 65 years old, the normal retirement age.
Some poor adults do not look for jobs for a variety of personal reasons: they are sick, they do not have any motivation, they have family problems, or they do not believe that they can find a job.
Other poor people look for a job but cannot find one. Many poor adults never went to high school. Therefore, when they look for jobs, they have few skills that they can offer.
At the present time, the government thinks it can reduce poverty in the country in the following ways. First, if the national economy grows, businesses and industries hire more workers. Some of the poor who are qualified to look for jobs may find employment. Then they will no longer be below the poverty line. Second, if society invests in the poor, the poor will become more productive. If the government spends money on social programs, education, and training for poor people, the poor will have the skills to offer. Then it is more likely that they can find jobs.
Finally, if the government distributes society's income differently, it raises some poor people above the poverty line. The government collects taxes from the non－poor and gives money to the poor. These payments to the poor are called welfare. In 1975 over 18 million people in the United States received welfare.
Some economists are looking for better solutions to the poverty problem. However, at the present time, many people depend on welfare for a minimally acceptable standard of living.
We may conclude from the passage that _______A.poor people are bound to go out of the poverty line if they have chances to do business
B.welfare will enable people to be rich
C.employment is the best solution to the poverty problem
D.better solutions to the poverty problem are not found yet答案：D解析：本题考查的是判断推理。
【关键词】conclude; from the passage
【主题句】第二段Therefore, even with today's relatively high standard of living, about 10 percent of the people in the United States are below
the poverty line. However, if these people had stable jobs, they could have an acceptable standard of living.（因此，即使今天有相对较高的生活水平，大约有百分之十的美国人处于贫困线以下。然而，如果他们有稳定的工作，就会满意自己的生活水平。）；倒数第二段The government collects taxes from the non－poor and gives money to the poor. These payments to the poor are called welfare.（政府从非贫困人口中征税，把钱分给穷人。我们把这些给穷人的费用称为福利。）；最后一段Some economists are looking for better solutions to the poverty problem. However, at the present time, many people depend on welfare for a minimally acceptable standard of living.（一些经济学家寻找更好解决贫困问题的方法。然而目前，许多人依靠福利勉强糊口。）
【解析】第5题问“我们可以从文章推断出什么？”。A选项“如果穷人有机会做生意，他们就会走出贫困线。”文章第三段第三句话说“如果穷人有稳定的工作，他们就会满意自己的生活水平，”这里并没有说他们要去做生意，属于过度推测，所以A选项排除；B选项“福利会使人们富裕”。文章在倒数第二段涉及到福利（welfare），但并未说给福利会让人变有钱，也属于过度推测，故排除；C选项“就业是解决贫困的最佳方法”。文章在最后一段第一句提到“一些经济学家寻找更好解决贫困问题的方法”，换言之，目前没有最好解决贫困的方法；D选项“人们尚未发现更好解决贫困的方法”，最后一段第一句说经济学家仍然在寻找解决问题的方法，言外之意目前并未出现解决贫困的最佳方法，所以D选项和原文信息一致。 -
第9题：
资料：When we see well，we do not think about our eyes very often. It is only when we cannot see perfectly that we realize how important our eyes are.
People who are near-sighted can only see things that are very close to their eyes，Everything else seems blurry（=unclear）.Many people who do a lot of work，such as writing，reading and sewing become near-sighted.
People who are far-sighted suffer from just the opposite problem. They can see things that are far away，but they have difficulty in reading a book unless they hold it at arm’s length. If they want to do much reading，they must get glasses，too.
Other people do not see clearly because their eyes are not exactly the right shape. They have what is called astigmatism. This，too，can be corrected by glasses. Some people’s eyes become cloudy because of cataracts. Long ago these people often became blind. Now，however，it is possible to operate on the cataracts and remove them.
Having two good eyes is important for judging distances. Each eye sees things from a slightly different angle. To prove this to yourself，look at an object out of one eye；Then look at the same object out of your other eye. You will find the object’s relation to the background and other things around it has changed. The difference between these two different eye views helps us to judge how far away an object is. People who have only one eye cannot judge distance as people with two eyes.
The underlined word suffer in the third paragraph probably means______.A.feel pain
B.imagine
C.are affected with
D.experience答案：A解析：本题考查的是推理判断。
【关键词】suffer；in the third paragraph；mean
【主题句】第3自然段People who are far-sighted suffer from just the opposite problem. They can see things that are far away，but they have difficulty in reading a book unless they hold it at arm’s length. 远视的人遭遇了相反的问题。他们可以看到很远的东西，但是他们看书有困难，除非保持一定的距离，否则很难阅读。
【解析】本题的问题是“第三段中带下划线的词suffer可能意味着_______”A选项“感到痛苦”；B选项“想象”；C选项“受到影响”；D选项“经历，经验”。根据主题句，远视的人遭遇着相反的问题，故A选项正确。 -
第10题：
资料：When we see well，we do not think about our eyes very often. It is only when we cannot see perfectly that we realize how important our eyes are.
People who are near-sighted can only see things that are very close to their eyes，Everything else seems blurry（=unclear）.Many people who do a lot of work，such as writing，reading and sewing become near-sighted.
People who are far-sighted suffer from just the opposite problem. They can see things that are far away，but they have difficulty in reading a book unless they hold it at arm’s length. If they want to do much reading，they must get glasses，too.
Other people do not see clearly because their eyes are not exactly the right shape. They have what is called astigmatism. This，too，can be corrected by glasses. Some people’s eyes become cloudy because of cataracts. Long ago these people often became blind. Now，however，it is possible to operate on the cataracts and remove them.
Having two good eyes is important for judging distances. Each eye sees things from a slightly different angle. To prove this to yourself，look at an object out of one eye；Then look at the same object out of your other eye. You will find the object’s relation to the background and other things around it has changed. The difference between these two different eye views helps us to judge how far away an object is. People who have only one eye cannot judge distance as people with two eyes.
We should take good care of our eyes______.A.even if we can see well
B.only when we cannot see perfectly
C.only when we realize how important our eyes are
D.only when we can see well答案：A解析：本题考查的是细节理解。
【关键词】take good care of；our eyes
【主题句】第1自然段When we see well，we do not think about our eyes very often. It is only when we cannot see perfectly that we realize how important our eyes are. 当我们看东西很清楚的时候，我们不经常想到我们的眼睛。只有当我们无法完美地看到时，我们才意识到我们的眼睛多么重要。
【解析】本题的问题是“我们应该好好保护我们的眼睛________”A选项“即使我们能看得很清楚”；B选项“当我们无法完美地看到时”；C选项“只有当我们意识到我们的眼睛有多重要时”；D选项“只有在我们能够看得出来的时候”。根据主题句分析可知，我们无论何时都要保护好眼睛，不要在看不清的时候才意识到严重性，故A选项符合题意。 -
第11题：
In many societies of the world， we find a large number of people who speak more than one language. As a characteristic of societies， b（） inevitably results from the coming into contact of people with different cultures and different languages.
bilingualism
略 -
第12题：
单选题I do not advocate building the park near a jetport, which might make people to suffer from defective hearing.Amake people suffering from defective hearing
Bmake people suffer from defective hearing
Cmake people suffer defective hearing
Dmake people to suffer defective hearing
正确答案： D解析：
本题考查语法结构和动词搭配。句意：我真的不提倡在喷气机机场旁建公园，因为这会使人们的听力受损。make+名词+do意思是“使……做……”，含有强制的意思，名词和其后动词是主动关系。另外，动词suffer后跟副词from意为“遭受损害，受……之苦的”。所以答案为B。 -
第13题：
The reason that many people find it hard to relax these days is that________．
A．they are suffering from the effects of excessive stress
B．they are working harder than they used to
C．they are often too busy to find time
D．they have no idea what relaxation means to them
正确答案：C
因为现代生活的节奏非常快，人们忙于工作，用来放松和休闲的时间就相应减少了。 -
第14题：
Many people believe the glare from snow causes snow-blindness． Yet, dark glasses or not,they find themselves suffering from headaches and watering eyes, and even snow-blindness, when exposed to several hours of "snow light"．
The United States Army has now determined that glare from snow does not cause snow-
blindness in troops in a snow-covered country． Rather, a man's eyes frequently find nothing to focus on in a broad expanse of barren snow-covered terrain． So his gaze continually shifts and jumps back and forth over the entire landscape in search of something to look at． Finding nothing,hour after hour, the eyes never stop searching and the eyeballs become sore and the eye musclesache． Nature offsets this irritation by producing more and fluid which covers the eyeball． The fluid covers the eyeball in increasing quantity until vision blurs, then is observed, and the result is
total, even though temporary, snow-blindness．
Experiments led the Army to a simple method of overcoming this problem． Scouts ahead of a main body of troops are trained to shake snow from evergreen bushes, creating a dotted line as they cross completely snow-covered landscape． Even the scouts themselves throw lightweight, dark colored objects ahead on which they too can focus． The men following can then see something．Their gaze is arrested． Their eyes focus on a bush and having found something to see, stop scouring the snow-blanketed landscape． By focusing their attention on one object at a time, the men can cross the snow without becoming hopelessly snow-blind or lost． In this way the problem of crossing a solid white terrain is overcome．
To prevent headaches, watering eyes and blindness caused by the glare from snow, dark glasses are__________ ．A.indispensible
B.useful
C.ineffective
D.available答案：C解析：根据第一段“Yet，dark glasses or not，theY find themselves suffering from headaches and watering eyes，and even snow—blindness”可知，深色眼镜并不起作用，故选C。 -
第15题：
Many people believe the glare from snow causes snow-blindness． Yet, dark glasses or not,they find themselves suffering from headaches and watering eyes, and even snow-blindness, when exposed to several hours of "snow light"．
The United States Army has now determined that glare from snow does not cause snow-
blindness in troops in a snow-covered country． Rather, a man's eyes frequently find nothing to focus on in a broad expanse of barren snow-covered terrain． So his gaze continually shifts and jumps back and forth over the entire landscape in search of something to look at． Finding nothing,hour after hour, the eyes never stop searching and the eyeballs become sore and the eye musclesache． Nature offsets this irritation by producing more and fluid which covers the eyeball． The fluid covers the eyeball in increasing quantity until vision blurs, then is observed, and the result is
total, even though temporary, snow-blindness．
Experiments led the Army to a simple method of overcoming this problem． Scouts ahead of a main body of troops are trained to shake snow from evergreen bushes, creating a dotted line as they cross completely snow-covered landscape． Even the scouts themselves throw lightweight, dark colored objects ahead on which they too can focus． The men following can then see something．Their gaze is arrested． Their eyes focus on a bush and having found something to see, stop scouring the snow-blanketed landscape． By focusing their attention on one object at a time, the men can cross the snow without becoming hopelessly snow-blind or lost． In this way the problem of crossing a solid white terrain is overcome．
A suitable title for this passage would be __________ ．A.Snow-Blindness and How to Overcome It
B.Nature's Cure for Snow Blindness
C.Soldiers in the Snow
D.Snow Vision答案：A解析：本题考查全文主旨。全文讲的就是雪盲症怎么发生、怎么应对，故选A。 -
第16题：
Many people believe the glare from snow causes snow-blindness. Yet, dark glasses or not, they find themselves suffering from headaches and watering eyes, and even snow-blindness, when exposed to several hours of "snow light".
The United States Army has now determined that glare from snow does not cause snow- blindness in troops in a snow-covered country. Rather, a man's eyes frequently find nothing to focus on in a broad expanse of barren snow-covered terrain. So his gaze continually shifts and jumps back and forth over the entire landscape in search of something to look at. Finding nothing, hour after hour, the eyes never stop searching and the eyeballs become sore and the eye muscles ache. Nature offsets this irritation by producing more and fluid which covers the eyeball. The fluid
covers the eyeball in increasing quantity until vision blurs,then is observed, and the result is total, even though temporary, snow-blindness.
Experiments led the Army to a simple method of overcoming this problem. Scouts ahead of a main body of troops are trained to shake snow from evergreen bushes, creating a dotted line as they cross completely snow-covered landscape. Even the scouts themselves throw lightweight, dark colored objects ahead on which they too can focus. The men following can then see something. Their gaze is arrested. Their eyes focus on a bush and having found something to see, stop scouring the snow-blanketed landscape. By focusing their attention on one object at a time, the men can cross the snow without becoming hopelessly snow-blind or lost. In this way the problem of crossing a solid white terrain is overcome.
A suitable title for this passage would be_________.A. snow-blindness and how to overcome it
B. nature's cure for snow blindness
C. soldiers in the snow
D. snow vision答案：A解析：本题考查全文主旨。全文讲的就是雪盲症怎么发生、怎么应对，故选A。 -
第17题：
Many people believe the glare from snow causes snow-blindness. Yet, dark glasses or not, they find themselves suffering from headaches and watering eyes, and even snow-blindness, when exposed to several hours of "snow light".
The United States Army has now determined that glare from snow does not cause snow- blindness in troops in a snow-covered country. Rather, a man's eyes frequently find nothing to focus on in a broad expanse of barren snow-covered terrain. So his gaze continually shifts and jumps back and forth over the entire landscape in search of something to look at. Finding nothing, hour after hour, the eyes never stop searching and the eyeballs become sore and the eye muscles ache. Nature offsets this irritation by producing more and fluid which covers the eyeball. The fluid
covers the eyeball in increasing quantity until vision blurs,then is observed, and the result is total, even though temporary, snow-blindness.
Experiments led the Army to a simple method of overcoming this problem. Scouts ahead of a main body of troops are trained to shake snow from evergreen bushes, creating a dotted line as they cross completely snow-covered landscape. Even the scouts themselves throw lightweight, dark colored objects ahead on which they too can focus. The men following can then see something. Their gaze is arrested. Their eyes focus on a bush and having found something to see, stop scouring the snow-blanketed landscape. By focusing their attention on one object at a time, the men can cross the snow without becoming hopelessly snow-blind or lost. In this way the problem of crossing a solid white terrain is overcome.
To prevent headaches, watering eyes and blindness caused by the glare from snow, dark glasses are__________.A. indispensible
B. useful
C. ineffective
D. available答案：C解析：根据第一段“Yet，dark glasses or not，they find themselves suffering from headaches and
watering eyes。and even snow-blindness”可知，深色眼镜并不起作用，故选C。 -
第18题：
Many people believe the glare from snow causes snow-blindness. Yet, dark glasses or not, they find themselves suffering from headaches and watering eyes, and even snow-blindness, when exposed to several hours of "snow light".
The United States Army has now determined that glare from snow does not cause snow- blindness in troops in a snow-covered country. Rather, a man's eyes frequently find nothing to focus on in a broad expanse of barren snow-covered terrain. So his gaze continually shifts and jumps back and forth over the entire landscape in search of something to look at. Finding nothing, hour after hour, the eyes never stop searching and the eyeballs become sore and the eye muscles ache. Nature offsets this irritation by producing more and fluid which covers the eyeball. The fluid
covers the eyeball in increasing quantity until vision blurs,then is observed, and the result is total, even though temporary, snow-blindness.
Experiments led the Army to a simple method of overcoming this problem. Scouts ahead of a main body of troops are trained to shake snow from evergreen bushes, creating a dotted line as they cross completely snow-covered landscape. Even the scouts themselves throw lightweight, dark colored objects ahead on which they too can focus. The men following can then see something. Their gaze is arrested. Their eyes focus on a bush and having found something to see, stop scouring the snow-blanketed landscape. By focusing their attention on one object at a time, the men can cross the snow without becoming hopelessly snow-blind or lost. In this way the problem of crossing a solid white terrain is overcome.
When the eyes are sore, tears are produced to_________.A. clear the vision
B. remedy snow-blindness
C. ease the irritation
D. loosen the muscles答案：C解析：根据第二段“the eyeballs become sore…Nature offsets this irritation by producing more
and fluid whichcovers the eyeball”可知，眼泪的分泌是为了缓和刺激，故选C。 -
第19题：
资料：When we see well，we do not think about our eyes very often. It is only when we cannot see perfectly that we realize how important our eyes are.
People who are near-sighted can only see things that are very close to their eyes，Everything else seems blurry（=unclear）.Many people who do a lot of work，such as writing，reading and sewing become near-sighted.
People who are far-sighted suffer from just the opposite problem. They can see things that are far away，but they have difficulty in reading a book unless they hold it at arm’s length. If they want to do much reading，they must get glasses，too.
Other people do not see clearly because their eyes are not exactly the right shape. They have what is called astigmatism. This，too，can be corrected by glasses. Some people’s eyes become cloudy because of cataracts. Long ago these people often became blind. Now，however，it is possible to operate on the cataracts and remove them.
Having two good eyes is important for judging distances. Each eye sees things from a slightly different angle. To prove this to yourself，look at an object out of one eye；Then look at the same object out of your other eye. You will find the object’s relation to the background and other things around it has changed. The difference between these two different eye views helps us to judge how far away an object is. People who have only one eye cannot judge distance as people with two eyes.
People who suffer from astigmatism have______.A.a difficulty that can be corrected by an operation
B.eyes that are not exactly the right shape
C.an eye difficulty that cannot be corrected by glasses
D.one eye bigger than the other答案：B解析：本题考查的是细节理解。
【关键词】people；suffer from astigmatism
【主题句】第4自然段Other people do not see clearly because their eyes are not exactly the right shape. They have what is called astigmatism. This，too，can be corrected by glasses. 其他人看不清楚，因为他们的眼睛形状不规则。他们有所谓的散光。 这也可以通过眼镜来纠正。
【解析】本题的问题是“患有散光的人__________。”A选项“可以通过手术纠正问题”；B选项“眼睛形状不规则”；C选项“一种无法用眼镜矫正的视力问题”；D选项“一只眼睛比另一只眼睛大”。根据主题句，散光主要是眼睛形状不规则造成的，但是可以通过戴眼镜来矫正，因此B选项正确。 -
第20题：
资料：When we see well，we do not think about our eyes very often. It is only when we cannot see perfectly that we realize how important our eyes are.
People who are near-sighted can only see things that are very close to their eyes，Everything else seems blurry（=unclear）.Many people who do a lot of work，such as writing，reading and sewing become near-sighted.
People who are far-sighted suffer from just the opposite problem. They can see things that are far away，but they have difficulty in reading a book unless they hold it at arm’s length. If they want to do much reading，they must get glasses，too.
Other people do not see clearly because their eyes are not exactly the right shape. They have what is called astigmatism. This，too，can be corrected by glasses. Some people’s eyes become cloudy because of cataracts. Long ago these people often became blind. Now，however，it is possible to operate on the cataracts and remove them.
Having two good eyes is important for judging distances. Each eye sees things from a slightly different angle. To prove this to yourself，look at an object out of one eye；Then look at the same object out of your other eye. You will find the object’s relation to the background and other things around it has changed. The difference between these two different eye views helps us to judge how far away an object is. People who have only one eye cannot judge distance as people with two eyes.
Having two eyes instead of one is particularly useful for______.A.looking over a wide area
B.seeing objects far away
C.judging distances
D.seeing at night答案：C解析：本题考查的是细节理解。
【关键词】Having two eyes instead of one；useful for
【主题句】第5自然段Having two good eyes is important for judging distances. Each eye sees things from a slightly different angle.拥有两只好眼睛对于判断距离非常重要。每只眼睛从略微不同的角度看东西。
【解析】本题的问题是“两只眼睛相较一只眼睛对于______特别有用。”A选项“俯瞰广阔的区域”；B选项“远处看物体”；C选项“判断距离”；D选项“晚上看东西”。根据主题句，C选项正确。 -
第21题：
资料：When we see well，we do not think about our eyes very often. It is only when we cannot see perfectly that we realize how important our eyes are.
People who are near-sighted can only see things that are very close to their eyes，Everything else seems blurry（=unclear）.Many people who do a lot of work，such as writing，reading and sewing become near-sighted.
People who are far-sighted suffer from just the opposite problem. They can see things that are far away，but they have difficulty in reading a book unless they hold it at arm’s length. If they want to do much reading，they must get glasses，too.
Other people do not see clearly because their eyes are not exactly the right shape. They have what is called astigmatism. This，too，can be corrected by glasses. Some people’s eyes become cloudy because of cataracts. Long ago these people often became blind. Now，however，it is possible to operate on the cataracts and remove them.
Having two good eyes is important for judging distances. Each eye sees things from a slightly different angle. To prove this to yourself，look at an object out of one eye；Then look at the same object out of your other eye. You will find the object’s relation to the background and other things around it has changed. The difference between these two different eye views helps us to judge how far away an object is. People who have only one eye cannot judge distance as people with two eyes.
When things far away seem indistinct， one is probably______.A.astigmatic
B.far-sighted
C.suffering from cataracts
D.near-sighted答案：D解析：本题考查的是细节理解。
【关键词】things far away；indistinct
【主题句】第2自然段People who are near-sighted can only see things that are very close to their eyes，Everything else seems blurry（=unclear）. 近视的人只能看到非常接近他们眼睛的东西，其他一切看起来都很模糊（=不清楚）。
【解析】本题的问题是“当远处的东西看起来模糊不清时，可能就是？”A选项“散光”；B选项“远视”；C选项“患有白内障”；D选项“近视”。根据主题句，看不清远方的东西，应当是患有近视，故D选项正确。 -
第22题：
共用题干
The Dangers of Secondhand Smoke
Most people know that cigarette smoking is harmful to their health.Scientific research shows that it
causes many kinds of diseases.In fact,many people who smoke get lung cancer. However,Edward Gilson
has lung cancer,and he has never smoked cigarettes.He lives with his wife Evelyn,who has smoked about
a pack of cigarettes a day throughout their marriage.________(46)
No one knows for sure why Mr. Gilson has lung cancer. Nevertheless,doctors believe that secondhand
smoke may cause lung cancer in people who do not smoke because nonsmokers often breathe in the smoke
from other people's cigarettes.________(47)The US Environmental Protection Agency reports that about
53,000 people die in the United States each year as a result of exposure to secondhand smoke.
The smoke that comes from a lit cigarette contains many different poisonous chemicals.In the past,
scientists did not think that these chemicals could harm a nonsmoker's health._________(48)They
discovered that even nonsmokers had unhealthy amounts of these toxic chemicals in their bodies.As a matter
of fact,almost all of us breathe tobacco smoke at times,whether we realize it or not. For example,we can
not avoid secondhand smoke in restaurants,hotels and other public places.Even though many public places
have nonsmoking areas,smoke flows in from the areas where smoking is permitted.
It is even harder for children to avoid secondhand smoke._________(49)Research shows that chil-
dren who are exposed to secondhand smoke are sick more often than children who live in homes where no one
smokes and that the children of smokers are more than twice as likely to develop lung cancer when they are
adults as are children of nonsmokers.The risk is even higher for children who live in homes where both
parents smoke.
People are becoming very aware of the dangers of secondhand smoke._________（50)__________（50）
A:Recently,though,scientists changed their opinion after they studied a large group of nonsmokers.
B:The Gilsons have been married for 35 years.
C:This smoke is called secondhand smoke.
D:However,secondhand smoke is dangerous to all people,old or young.
E:As a result,they have passed laws which prohibit people from smoking in many public places.
F: In the United States,nine million children under the age of five live in homes with at least one smoker.答案：E解析：前一句主要讲的是，Gilson先生与妻子Evelyn生活在一起，而Evelyn自他们结婚以来 一直是每天差不多抽一包烟。接下来显然应选表示他们结婚年限的句子。再者，只有B项提 到了Gilsons。
前一句提到，不吸烟者时常吸人吸烟者吸烟时呼出的烟，后面应跟这种烟的定义，故选C。
前一句讲的是过去科学家们对二手烟的看法，接下来的句子应表示他们改变了看法， 因为后面的句子表明他们所持的观点已与过去截然不同。
前一句提到儿童与二手烟，接下来的句子自然仍然与儿童有关。
前一句讲的是人们逐渐意识到二手烟的危害，因此接下来的句子应表示人们采取措 施，禁止在公共场所吸烟。第6部分：完形填空 -
第23题：
问答题Directions:In this section, there is one passage followed by a summary. Read the passage carefully and complete the summary below by choosing a maximum of three words from the passage to fill in the spaces 76-80. Remember to write the answers on the Answer Sheet. Questions 1-5 are based on the following passage. Headaches are a big problem. But they are not just a problem for the person suffering from the headache. They are a problem for society as well. Each year, millions of people suffer from severe headaches that keep them from doing their jobs. In fact, according to one estimate, headaches cost individuals and businesses more than $50 billion each year! This is one of the reasons research into headaches has become a worldwide effort. Although he did not know much about how headaches work, Hippocrates was the first doctor to find a way to treat them. Before 400 B.C., Hippocrates discovered that the bark from willow trees was useful in treating pain. He made a white powder from the tree’s bark and gave it to his patients. Hippocrates did not know it, but he was actually prescribing a natural chemical in willow bark called salicin. When a person eats salicin, the chemical is changed inside her or his body into salicylic acid. It turns out that salicylic acid is good for stopping pain, including headache, but it is bad for a person’s stomach. In the 1800s, a chemist in Germany changed the acid’s form a little to make it easier for people to take. This new form of the chemical was called acetylsalicylic acid, commonly known as aspirin today. Aspirin was used throughout most of the 1900s to treat headaches, but doctors had little idea about what really caused headaches. When doctors know the cause of a disease, they can find better ways to treat it. Therefore, as medical technology developed, doctors began to use the technology to learn more about the human brain and about headaches. Currently, doctors classify headaches into two general types: primary and secondary. A primary headache is a condition suffered as only the headache itself. On the other hand, a secondary headache is one caused by another condition. For example, someone who catches the flu may suffer from headaches along with other symptoms of the illness. Flu headaches are thus secondary headaches. For primary headaches, doctors have determined three possible causes. One kind of primary headache is caused by stress. Doctors usually call these tension headaches. Such headaches are characteristically felt on both sides of the head as a dull, steady pain.Another kind of primary headache is the migraine headache. Doctors believe these headaches are caused by reduced flow of blood to certain parts of the brain. A migraine sufferer usually feels intense pain on one side of the head. The sufferer also becomes sensitive to light and noise. If the migraine is severe, the sufferer may vomit repeatedly. The third kind of primary headache is known as the cluster headache. Cluster headaches typically occur around the same time each day for weeks or months at a time. The person suffering from this kind of headache usually feels pain on one side of her or his head, and the pain is centered around one of the person’s eyes. Doctors do not know much at present about cluster headaches, but they seem more common among men and could be related to alcohol or other things that affect a person’s blood flow. Using computers and more advanced medical equipment, doctors continue to learn more about what happens in the brain before and during headaches. Especially in the case of migraines, some doctors believe they have found the part of the brain that sets off the reaction for severe attacks. With this new insight into brain processes, doctors hope new ways will be discovered for stopping disabling headaches before they begin. Summary: Doctors knew a long time ago that the 1 from the willow trees could help people who felt pain. Hippocrates was the first doctor to change organic material into a powder and give it to his patients. But it was not until the 1800s that this natural drug was altered and became known as 2 . With the help of technology, doctors have now gained detailed insight into how the brain works and what happens when a person suffers from a headache. Through this research, headaches have been 3 primary and secondary headaches. There are three types of primary headaches: tension, migraine, and cluster headaches. Although not much is known about cluster headaches, doctors have been able to determine some of the things that 4 During a migraine attack, the sufferer may become 5 and noise.正确答案：
1.bark 文章第一段提到the bark from willow trees was useful in treating pain。
2.aspirin 文章第三段提到在1800年的时候,一位德国的化学家changed the acid’s form,commonly known as aspirin today.
3.classified into 文中第五段提到doctors classify headaches into two general types: primary and secondary.
4.set off migraines 文章最后一段提到在头疼的研究中,医生使用先进的设备来进行研究,并且能找到病因,尤其是migraines(偏头痛)的研究中,空格处可以归纳为set off migraines。
5.sensitive to light 在谈migraine headache这一段,提到The sufferer also becomes sensitive to light and noise.解析： 暂无解析