If you are writing or studying,it makes very much difference where the light comes from.People who use books and pens every day have to be especially careful about the way the light shines on their work. Every house gets its light either from daylight thr
题目
If you are writing or studying,it makes very much difference where the light comes from.People who use books and pens every day have to be especially careful about the way the light shines on their work.
Every house gets its light either from daylight through the windows--which is the best to use--or from lamps or electricity;but whichever kind of light it is,the way it shines toward our book or work is a matter of great importance to the eyes.
Take a book,sit with your back toward the window,and try to read.Your shadow（影子）falls all over the page and makes it almost as bad for your eyes as if you were in a dark room.
Now turnaround and face the window.The page is in the shadow again,while the bright light is in your eyes.
Try sitting with your right side toward the window.This is very well for reading,but if you were writing,the shadow of your hand would fall across the page and bother（打搅）you a little.
There is just one other way:sit with your left side to the window.Now everything is perfect for reading and for writing,too.
Whatever kind of light is in the room,the rule about the right to sit is always the same.
When you sit with your face towards the window,__________?
Every house gets its light either from daylight through the windows--which is the best to use--or from lamps or electricity;but whichever kind of light it is,the way it shines toward our book or work is a matter of great importance to the eyes.
Take a book,sit with your back toward the window,and try to read.Your shadow（影子）falls all over the page and makes it almost as bad for your eyes as if you were in a dark room.
Now turnaround and face the window.The page is in the shadow again,while the bright light is in your eyes.
Try sitting with your right side toward the window.This is very well for reading,but if you were writing,the shadow of your hand would fall across the page and bother（打搅）you a little.
There is just one other way:sit with your left side to the window.Now everything is perfect for reading and for writing,too.
Whatever kind of light is in the room,the rule about the right to sit is always the same.
When you sit with your face towards the window,__________?
A.your shadow falls on your book
B.your book is in a shadow
C.the light is still dark
D.the light is on your page
B.your book is in a shadow
C.the light is still dark
D.the light is on your page
相似考题
更多“If you are writing or studying,it makes very much difference where the light comes from.People who use books and pens every day have to be especially careful about the way the light shines on their work. Every house gets its light either from daylight thr”相关问题
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第1题：
听材料，回答下列问题： Directions: In this section, you will hear a passage three times. When the passage is read for the first time, you should listen carefully for its general idea. When the passage is read for the second time, you are required to fill in the blanks with the exact words you have just heard.Finally, when the passage is read for the third time, you should check what you have written. Shift work is concentrated in the most dangerous areas of employment. It has various effects on health and daily life. Shift workers, especially those who work nights, can 26 a number of health problems. They include sleep 27 , depression, high blood pressure, heart disease, and 28 Experts now realize that sleep loss are dangerous and that night shift always results in sleep loss. Most people need 8 hours of sleep a day to feel 29 . Parts of the night sleep are spent in light sleep stages and the other parts of the night are spent in deep sleep stages. If you work the night shift and sleep during the day, there are many things that can 30 your deep sleep and awaken you during your light sleep phase. Noise is the biggest problem. Daytime sleepers have to 31 noisy neighbors, children, traffic, lawn mowers and such. Noise is the most common 32 of people who sleep during the day, so noise prevention should be given top priority. When looking for a home to rent or buy, always look for one in a quiet 33 Another sleep 34 is too much light. Our bodys entire cycle is based upon light and dark. If you are doing the opposite of this set body program, you are 35 generations of programming. Since sunlight will disturb your day you should choose a house where the bedroom is on the north side of the house. Wear a black eye mask to further block out the light while you are sleeping. 第26题应填____
正确答案：
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第2题：
Light travels at about ___.A.300,000 kilometres a second
B.a second 300,000 kilometres
C.every second 300,000 kilometres
D.300,000 kilometre every second
正确答案：A
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第3题：
It was () of you to turn off the light while I was sleeping.A、considerable
B、considerate
C、concerned
D、careful
参考答案：B
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第4题：
A list signal of one white light indicates that the vessel is ______.
A.on an even keel
B.listing about 1° to the side the light is displayed on
C.listing over 5°With the light displayed on the high side
D.listing，and the chutes should be directed to the side where the light is displayed
正确答案：B
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第5题：
共用题干
Computer Mouse
The basic computer mouse is an amazingly clever invention with a relatively simple design that allows us to point at things on the computer and it is very productive.Think of all the things you can do with a mouse like selecting text for copying and pasting,drawing,and even scrolling on the page with the newer mice with the wheel. Most of us use the computer mouse daily without stopping to think how it works until it gets dirty and we have to learn how to clean it. We learn to point at thing before we learn to speak,so the mouse is a very natural pointing device.Other computer pointing devices include light pens,graphics tablets and touch screen,but the mouse is still our workhorse.
The computer mouse was invented in 1964 by Douglas Englehart of Stanford University.As computer screens became popular and arrow keys were used to more around a body of text,it became clear that a pointing device that allowed easier motion through the text and even selection of text would be very useful.The introduction of the mouse,with the Apple Lisa computer in 1983,really started the computer public on the road to relying on the mouse for routine computer tasks.
How does the mouse work?We have to start at the bottom,so think upside down for now. It all starts with mouse ball. As the mouse ball in the bottom of the mouse rolls over the mouse pad,it presses against and turns two shafts.The shafts are connected to wheels with several small holes in them. The wheels have a pair of small electronic light-emitting devices called light emitting diodes (LED)mounted on either side.One LED sends a light beam to the LED on the other side.As the wheels spin and a hole rotates by,the light beam gets through to the LED on the other side.But a moment later the light beam is blocked until the next hole is in place.The LED detects a changing pattern of light,converts the pattern into an electronic signal,and sends the signal to the computer through wires in a cable that goes out the mouse body.This cable is the tail that helps give the mouse its name.The computer interprets the signal to tell it where to position the cursor on the computer screen.
So far we have only discussed the basic computer mouse that most of you probably have or have used.One problem with this design is that the mouse gets dirty as the ball rolls over the surface and picks up the dirt. Eventually you have to clean your mouse. The newer optical mice avoid this problem by having no moving parts.When an ordinary computer mouse gets dirty,it has to be replaced with a new one.
A:Right
B:Wrong
C:Not mentioned答案：B解析：原文第一段第三句表明，大多数人虽然每天都在用鼠标，但并没有停下来去思考鼠标的工作原理。
文章中没有出现与问题句的内容相呼应的信息，因此判断问题句的内容在文章中没有被提到。
原文第三段倒数第二、三句指出，由于这个从鼠标中伸出的线缆像条尾巴一样，所以鼠标因此而得名。
原文第三段提及两个发光二极管在鼠标中的具体工作方式：二极管把光信号转换成电信号，传送到电脑。由此可看出二极管是鼠标中的关键部件。
原文最后一段第二句可以看到，如果鼠标脏了，需要做的是清洁，而不是换个新的。
文章没有谈到这方面的信息。
原文是："The newer optical mice avoid this problem by having no moving parts.”新型的光电鼠标无移动部件，因而避免了老式鼠标的缺点。 -
第6题：
共用题干
Computer Mouse
The basic computer mouse is an amazingly clever invention with a relatively simple design that allows us to point at things on the computer and it is very productive.Think of all the things you can do with a mouse like selecting text for copying and pasting,drawing,and even scrolling on the page with the newer mice with the wheel. Most of us use the computer mouse daily without stopping to think how it works until it gets dirty and we have to learn how to clean it. We learn to point at thing before we learn to speak,so the mouse is a very natural pointing device.Other computer pointing devices include light pens,graphics tablets and touch screen,but the mouse is still our workhorse.
The computer mouse was invented in 1964 by Douglas Englehart of Stanford University.As computer screens became popular and arrow keys were used to more around a body of text,it became clear that a pointing device that allowed easier motion through the text and even selection of text would be very useful.The introduction of the mouse,with the Apple Lisa computer in 1983,really started the computer public on the road to relying on the mouse for routine computer tasks.
How does the mouse work?We have to start at the bottom,so think upside down for now. It all starts with mouse ball. As the mouse ball in the bottom of the mouse rolls over the mouse pad,it presses against and turns two shafts.The shafts are connected to wheels with several small holes in them. The wheels have a pair of small electronic light-emitting devices called light emitting diodes (LED)mounted on either side.One LED sends a light beam to the LED on the other side.As the wheels spin and a hole rotates by,the light beam gets through to the LED on the other side.But a moment later the light beam is blocked until the next hole is in place.The LED detects a changing pattern of light,converts the pattern into an electronic signal,and sends the signal to the computer through wires in a cable that goes out the mouse body.This cable is the tail that helps give the mouse its name.The computer interprets the signal to tell it where to position the cursor on the computer screen.
So far we have only discussed the basic computer mouse that most of you probably have or have used.One problem with this design is that the mouse gets dirty as the ball rolls over the surface and picks up the dirt. Eventually you have to clean your mouse. The newer optical mice avoid this problem by having no moving parts.The computer mouse derives its name from the cable that goes out its body,which looks like the tail of a mouse.
A:Right
B:Wrong
C:Not mentioned答案：A解析：原文第一段第三句表明，大多数人虽然每天都在用鼠标，但并没有停下来去思考鼠标的工作原理。
文章中没有出现与问题句的内容相呼应的信息，因此判断问题句的内容在文章中没有被提到。
原文第三段倒数第二、三句指出，由于这个从鼠标中伸出的线缆像条尾巴一样，所以鼠标因此而得名。
原文第三段提及两个发光二极管在鼠标中的具体工作方式：二极管把光信号转换成电信号，传送到电脑。由此可看出二极管是鼠标中的关键部件。
原文最后一段第二句可以看到，如果鼠标脏了，需要做的是清洁，而不是换个新的。
文章没有谈到这方面的信息。
原文是："The newer optical mice avoid this problem by having no moving parts.”新型的光电鼠标无移动部件，因而避免了老式鼠标的缺点。 -
第7题：
共用题干
Computer Mouse The basic computer mouse is______(51)amazingly clever invention with a relatively simple design that allows us to point at things on the computer and it is very productive.Think of all the things you can do with a mouse like selecting text for copying and pasting , drawing , and even scrolling（滚动）on the page with the newer mice with the wheel.Most of us use the computer mouse daily without stopping to think how it______(52)until it gets dirty and we have to learn how to______(53)it.We learn to point at things______(54)we learn to speak,so the mouse is a very natural pointing device.Other computer pointing devices include light pens,graphics tablets and touch screens,but the mouse is still our workhorse. The computer mouse was_____(55)in 1964 by Douglas Englehart of Stanford University.As computer screens became more popalar and arrow keys were used to move around a body of text,it became clear that a pointing device that allowed easier motion through the text and even selection of text would be very useful.The introduction of the mouse,with the Apple lisa computer in 1983,really started the computer public on the road to relying on the mouse_____(56)routine computer tasks. How does the mouse work?We have to start at the bottom,so think upside down for now.It all starts with the mouse ball.As the mouse ball in the bottom of the mouse rolls over the mouse pad,it presses against and turns two shafts（轴）.The shafts are connected to wheels with several small holes in them.The wheels have a pair of small electronic light-emitting devices______(57) light-emitting diodes(LED)mounted on either side.One LED sends a light beam to the LED on______(58)side.As the wheels spin and a hole rotates by,the light beam gets through to the LED on the other side.But a moment______(59)the light beam is blocked until the next hole is in place.The LED______(60)a changing pattern of light, converts the pattern______(61)an electronic signal,and sends the signal to the computer through wires in a cable that goes out of the mouse body.This cable is the tail that helps give the mouse its name.The computer interprets the signal to tell it where to position the cursor on the computer______(62). So far we have only discussed the basic computer mouse that______(63)of you probably have or have used.One problem with this design is that the mouse gets dirty as the ball rolls over the surface and picks up dirt.______(64)you have to clean your mouse.The newer optical mice______(65)this problem by having no moving parts.63._________
A:much
B:whole
C:most
D:few答案：C解析：前面并没有提到过电脑鼠标，这里是泛指，又由于空格后的单词读音由元音音素开头，故选B项。the 是定冠词，特指已提到的人或物；an 是不定冠词，用在以元音音素开头的可数名词前，表示“一个”;a也是不定冠词，用在不是以元音音素开头的可数名词前，也表示“一个”。
这里表示：我们虽然每天都在用鼠标，却没人会思考鼠标是怎么工作的。make制造，制作；do做，干；get得到，收到；work工作，运作。
由空格前的“it gets dirty”可知，空格处应为clean。clear清楚的，明白的，清晰的；clerk店员，职员，办事员；dean清洁，清理；check检查，核对。
按照人类生长的一般规律，学习用手指指东西理应发生在学习说话之前。before在……之前，先于；after在……以后；until到……为止；u沮ess除非，如果不。
鼠标是一项发明创造，而不是一项发现。find发现，找到，发觉；make制作，制造；discover发现；invent发明，创造。
依照逻辑推理，电脑鼠标的引人应该是为了使电脑完成日常任务。四个介词中只有for能够表示目的。
called在这里是“被称作”之意。这句话的意思是电子发光设备被人们称为LED,A项符合题意。
根据空格前一句提到的either可知，滚轮总共有两边，两者中的另一个应用the other来表示。other与复数名词连用，与others表示相同的意思。
later表示一段时间以后，是英语中的习惯用法。late晚的，迟到的，晚期的；Iater一段时间以后；after在……之后；when当……时候。
这里说的是LED的一种功能，即它能探测光线模式的改变。detect探测，发现；develop发展，开发；relieve解除，缓解；support支持，帮助，支撑。
convert…into…是固定短语，表示“把某事物转化为另一事物”。
此处表示的是“给电脑屏幕上的光标定位”。desk书桌，办公桌；table餐桌，目录；screen屏幕；mouse鼠标。
电脑鼠标应该是大多数人都用过的，故选most。much许多，与不可数名词连用；whole全部的，所有的，完整的；most大多数的，大部分的；few不多，很少。
鼠标变脏后，最终要清理，这里用eVentually来表示。comPletely完全地，彻底地；eventually最后地，最终地；specially特别地，特意地；particularly特别，尤其。根据题意，应选B。
结合上下文语境可知，光学鼠标避免了鼠标变脏的问题。ban禁止；avoid避开，避免，防止；allow允许，承认，准许；adapt使适应，使适合。 -
第8题：
共用题干
Computer Mouse The basic computer mouse is______(51)amazingly clever invention with a relatively simple design that allows us to point at things on the computer and it is very productive.Think of all the things you can do with a mouse like selecting text for copying and pasting , drawing , and even scrolling（滚动）on the page with the newer mice with the wheel.Most of us use the computer mouse daily without stopping to think how it______(52)until it gets dirty and we have to learn how to______(53)it.We learn to point at things______(54)we learn to speak,so the mouse is a very natural pointing device.Other computer pointing devices include light pens,graphics tablets and touch screens,but the mouse is still our workhorse. The computer mouse was_____(55)in 1964 by Douglas Englehart of Stanford University.As computer screens became more popalar and arrow keys were used to move around a body of text,it became clear that a pointing device that allowed easier motion through the text and even selection of text would be very useful.The introduction of the mouse,with the Apple lisa computer in 1983,really started the computer public on the road to relying on the mouse_____(56)routine computer tasks. How does the mouse work?We have to start at the bottom,so think upside down for now.It all starts with the mouse ball.As the mouse ball in the bottom of the mouse rolls over the mouse pad,it presses against and turns two shafts（轴）.The shafts are connected to wheels with several small holes in them.The wheels have a pair of small electronic light-emitting devices______(57) light-emitting diodes(LED)mounted on either side.One LED sends a light beam to the LED on______(58)side.As the wheels spin and a hole rotates by,the light beam gets through to the LED on the other side.But a moment______(59)the light beam is blocked until the next hole is in place.The LED______(60)a changing pattern of light, converts the pattern______(61)an electronic signal,and sends the signal to the computer through wires in a cable that goes out of the mouse body.This cable is the tail that helps give the mouse its name.The computer interprets the signal to tell it where to position the cursor on the computer______(62). So far we have only discussed the basic computer mouse that______(63)of you probably have or have used.One problem with this design is that the mouse gets dirty as the ball rolls over the surface and picks up dirt.______(64)you have to clean your mouse.The newer optical mice______(65)this problem by having no moving parts.56._________
A:to
B:in
C:for
D:about答案：C解析：前面并没有提到过电脑鼠标，这里是泛指，又由于空格后的单词读音由元音音素开头，故选B项。the 是定冠词，特指已提到的人或物；an 是不定冠词，用在以元音音素开头的可数名词前，表示“一个”;a也是不定冠词，用在不是以元音音素开头的可数名词前，也表示“一个”。
这里表示：我们虽然每天都在用鼠标，却没人会思考鼠标是怎么工作的。make制造，制作；do做，干；get得到，收到；work工作，运作。
由空格前的“it gets dirty”可知，空格处应为clean。clear清楚的，明白的，清晰的；clerk店员，职员，办事员；dean清洁，清理；check检查，核对。
按照人类生长的一般规律，学习用手指指东西理应发生在学习说话之前。before在……之前，先于；after在……以后；until到……为止；u沮ess除非，如果不。
鼠标是一项发明创造，而不是一项发现。find发现，找到，发觉；make制作，制造；discover发现；invent发明，创造。
依照逻辑推理，电脑鼠标的引人应该是为了使电脑完成日常任务。四个介词中只有for能够表示目的。
called在这里是“被称作”之意。这句话的意思是电子发光设备被人们称为LED,A项符合题意。
根据空格前一句提到的either可知，滚轮总共有两边，两者中的另一个应用the other来表示。other与复数名词连用，与others表示相同的意思。
later表示一段时间以后，是英语中的习惯用法。late晚的，迟到的，晚期的；Iater一段时间以后；after在……之后；when当……时候。
这里说的是LED的一种功能，即它能探测光线模式的改变。detect探测，发现；develop发展，开发；relieve解除，缓解；support支持，帮助，支撑。
convert…into…是固定短语，表示“把某事物转化为另一事物”。
此处表示的是“给电脑屏幕上的光标定位”。desk书桌，办公桌；table餐桌，目录；screen屏幕；mouse鼠标。
电脑鼠标应该是大多数人都用过的，故选most。much许多，与不可数名词连用；whole全部的，所有的，完整的；most大多数的，大部分的；few不多，很少。
鼠标变脏后，最终要清理，这里用eVentually来表示。comPletely完全地，彻底地；eventually最后地，最终地；specially特别地，特意地；particularly特别，尤其。根据题意，应选B。
结合上下文语境可知，光学鼠标避免了鼠标变脏的问题。ban禁止；avoid避开，避免，防止；allow允许，承认，准许；adapt使适应，使适合。 -
第9题：
If you are writing or studying,it makes very much difference where the light comes from.People who use books and pens every day have to be especially careful about the way the light shines on their work.
Every house gets its light either from daylight through the windows--which is the best to use--or from lamps or electricity;but whichever kind of light it is,the way it shines toward our book or work is a matter of great importance to the eyes.
Take a book,sit with your back toward the window,and try to read.Your shadow（影子）falls all over the page and makes it almost as bad for your eyes as if you were in a dark room.
Now turnaround and face the window.The page is in the shadow again,while the bright light is in your eyes.
Try sitting with your right side toward the window.This is very well for reading,but if you were writing,the shadow of your hand would fall across the page and bother（打搅）you a little.
There is just one other way:sit with your left side to the window.Now everything is perfect for reading and for writing,too.
Whatever kind of light is in the room,the rule about the right to sit is always the same.
Which of the following is true?A.How the light shines on our work is of much importance.
B.The way the light shines on your work makes no difference.
C.We needn't care about where the light comes from.
D.People can write or study under a light that comes from any direction.答案：A解析：考情点拨:事实细节题。应试指导:从第二段最后一句可知，不论是什么样的光，它照射在我们的书本上或者工作所需材料上的方式对我们的眼睛很重要。 -
第10题：
单选题You are underway and pass by a lighthouse.Its light，which was white since you first sighted it，changes to red．This means（）.AThe light is characterized as alternately flashing
BThe lighthouse has lost power and has switched to emergency lighting
CIt is the identifying light characteristic of the lighthouse
DYou have entered an area of shoal water or other hazard
正确答案： A解析： 暂无解析 -
第11题：
单选题From your position you observe a rotating white and green light to the north. This light is most likely（）.Afrom a submarine on the surface
Bthe light at Southeast Point
Cat an airport
Don a coastal patrol vessel
正确答案： C解析： 暂无解析 -
第12题：
单选题Which statement concerning Montauk Point Light is TRUE（）.AThe light comes on at sunset
BThere is an emergency light if the main light is extinguished
CThe height of the light is 24 feet
DThe tower is painted with black and white stripes
正确答案： A解析： 暂无解析 -
第13题：
Parallelism is NOT used in ________.
A、A yellow beam of sunlight, filtering through the muslin curtains, slanted on to the table, where a matchbox, half open, lay beside the inkpot.
B、Who would want to remonstrate and argue with them?
C、It is not so with me, to whom sleep is a coy mistress, much given to a teasing inconsistency and for ever demanding to be wooed – “lest too light winning make the prize light.”
D、… for even after the most eventful day, there is no comparing notes with them, no midnight confidence, no casting up the balance of the day’s pleasure and pain.
参考答案：ABC
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第14题：
The light from the sun moves away from its source in all directions, so its strength is very () .A.broken out
B.spread out
C.looked out
D.figured out
正确答案：B
解析：broken out 爆发;spread out 分散;looked out 小心;figured out 搞清楚根据句子的意思，应该是光线的分散，所以选择B.
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第15题：
I travel to the Binhai New Area by light railway every day, _____ do many businessmen who live in downtown Tianjin.
A. as B. which C. when D. though
正确答案：A
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第16题：
共用题干
Learn about Light
1 .Ancient civilizations were amazed by the existence of light for thousands of years. The Greek philosophers believed that light was made up of countless,tiny particles that enter the human eye and create what we call vision. However,Empedocles and a Dutch scientist named Christian Huygens believed that light was like a wave. According to them,light spread out and travelled like a straight line. This theory was accepted during the 19th century.
2 .In 1905,Albert Einstein published a research paper in which he explained what is re-ferred to as the photoelectric effect. This theory explains that particles make up light.The particles Einstein was referring to are weightless bundles（束）of electromagnetic（电磁）energy called photons（光子）.Today,scientists agree that light has a dual（二重）nature一it is part particle and part wave. It is a form of energy that allows us to see things around us.
3 .Things that give off light are known as sources of light. During the day,the primary source of light is the sun. Other sources of light include stars,flames,flashlights,street lamps and glowing gases in glass tube.
4 .When we draw the way light travels we always use straight lines. This is because nor-mally light rays travel in a straight line. However,there are some instances that can change the path and even the nature of light. They are reflection,absorption,interference（干扰）, etc.
5 .Physicists have attempted to measure the speed of light since the early times. In 1849, Hippolyte Fizeau conducted an experiment by directing a beam of light to a mirror located kilometers away and placed a rotating cogwheel（旋转齿轮）between the beam and the mirror. From the rate of rotation of the wheel,number of wheel's teeth and distance of the mirror,he was able to calculate that the speed of light is 313 million meters per second. In a vacuum（真空）,however,the speed of light is 299,792,458 meters per second. This is about a million times faster than the speed of an airplane.Paragraph 3______
A: How Is the Nature of Light Explained Today?
B: What Are Sources of Light?
C: How Did Physicists Measure the Speed of Light?
D: How Does Light Travel?
E: How Did People Think of Light Years Ago?
F: What Causes a Shadow?答案：B解析：该概括大意与完成句子所选的阅读材料为记述文，段落主题相对于论述文而言较松散，因此记述文中的段落大意往往需要考生根据自己的理解而归纳概括出来。解答概括大意题的技巧往往派不上用场。第二段主要讲述现代科学家认同了爱因斯坦的光电效应理论。因此可以判断A选项“当今人们如何解释光的性质”正确。
第三段第一句“Things that give off light are known as sources of light.”就点明主旨，发光的物体是光源。所以B选项“什么是光源？”正确。
第四段主要讲述光传播的问题，所以D选项“光是如何传播的”正确。
第五段的关键字是speed of light，光速。所以C选项“物理学家如何测量光的速度”正确。
题干意为“人们可以看见物体是因为光……。“从第二段最后一句可知，人们看见物体是因为光是一种能量。所以F项a form of energy正确的。
题干意为“星星、火焰、手电筒都是……的例子。”第三段“Other sources of light include stars , flames , flashlights...”说明，这些都是光源的例子。所以A选项sourcesof light是正确的。
题干意为“某些情况下，如反射和吸收可以改变……。”第四段中“there are some instances that can change the path and even the nature of light.They are reflection,ab-sorption , interference , etc.”这说明有一些情况可以改变光的路径。所以C选项the path of light是正确的。
题干意为“Hippolyte Fizeau做了一个刚试……的实验。”文中最后一段 “Hippolyte Fizeau conducted an experiment by directing a beam of light to a mirror...he was able to calculate that the speed of light...”可知Hippolyte Fizeau通过实验计算出了光速。所以B选项是正确的。 -
第17题：
共用题干
Computer Mouse
The basic computer mouse is an amazingly clever invention with a relatively simple design that allows us to point at things on the computer and it is very productive.Think of all the things you can do with a mouse like selecting text for copying and pasting,drawing,and even scrolling on the page with the newer mice with the wheel. Most of us use the computer mouse daily without stopping to think how it works until it gets dirty and we have to learn how to clean it. We learn to point at thing before we learn to speak,so the mouse is a very natural pointing device.Other computer pointing devices include light pens,graphics tablets and touch screen,but the mouse is still our workhorse.
The computer mouse was invented in 1964 by Douglas Englehart of Stanford University.As computer screens became popular and arrow keys were used to more around a body of text,it became clear that a pointing device that allowed easier motion through the text and even selection of text would be very useful.The introduction of the mouse,with the Apple Lisa computer in 1983,really started the computer public on the road to relying on the mouse for routine computer tasks.
How does the mouse work?We have to start at the bottom,so think upside down for now. It all starts with mouse ball. As the mouse ball in the bottom of the mouse rolls over the mouse pad,it presses against and turns two shafts.The shafts are connected to wheels with several small holes in them. The wheels have a pair of small electronic light-emitting devices called light emitting diodes (LED)mounted on either side.One LED sends a light beam to the LED on the other side.As the wheels spin and a hole rotates by,the light beam gets through to the LED on the other side.But a moment later the light beam is blocked until the next hole is in place.The LED detects a changing pattern of light,converts the pattern into an electronic signal,and sends the signal to the computer through wires in a cable that goes out the mouse body.This cable is the tail that helps give the mouse its name.The computer interprets the signal to tell it where to position the cursor on the computer screen.
So far we have only discussed the basic computer mouse that most of you probably have or have used.One problem with this design is that the mouse gets dirty as the ball rolls over the surface and picks up the dirt. Eventually you have to clean your mouse. The newer optical mice avoid this problem by having no moving parts.The optical mouse is superior to the basic one in that the former has no moving parts.
A:Right
B:Wrong
C:Not mentioned答案：A解析：原文第一段第三句表明，大多数人虽然每天都在用鼠标，但并没有停下来去思考鼠标的工作原理。
文章中没有出现与问题句的内容相呼应的信息，因此判断问题句的内容在文章中没有被提到。
原文第三段倒数第二、三句指出，由于这个从鼠标中伸出的线缆像条尾巴一样，所以鼠标因此而得名。
原文第三段提及两个发光二极管在鼠标中的具体工作方式：二极管把光信号转换成电信号，传送到电脑。由此可看出二极管是鼠标中的关键部件。
原文最后一段第二句可以看到，如果鼠标脏了，需要做的是清洁，而不是换个新的。
文章没有谈到这方面的信息。
原文是："The newer optical mice avoid this problem by having no moving parts.”新型的光电鼠标无移动部件，因而避免了老式鼠标的缺点。 -
第18题：
共用题干
Computer Mouse The basic computer mouse is______(51)amazingly clever invention with a relatively simple design that allows us to point at things on the computer and it is very productive.Think of all the things you can do with a mouse like selecting text for copying and pasting , drawing , and even scrolling（滚动）on the page with the newer mice with the wheel.Most of us use the computer mouse daily without stopping to think how it______(52)until it gets dirty and we have to learn how to______(53)it.We learn to point at things______(54)we learn to speak,so the mouse is a very natural pointing device.Other computer pointing devices include light pens,graphics tablets and touch screens,but the mouse is still our workhorse. The computer mouse was_____(55)in 1964 by Douglas Englehart of Stanford University.As computer screens became more popalar and arrow keys were used to move around a body of text,it became clear that a pointing device that allowed easier motion through the text and even selection of text would be very useful.The introduction of the mouse,with the Apple lisa computer in 1983,really started the computer public on the road to relying on the mouse_____(56)routine computer tasks. How does the mouse work?We have to start at the bottom,so think upside down for now.It all starts with the mouse ball.As the mouse ball in the bottom of the mouse rolls over the mouse pad,it presses against and turns two shafts（轴）.The shafts are connected to wheels with several small holes in them.The wheels have a pair of small electronic light-emitting devices______(57) light-emitting diodes(LED)mounted on either side.One LED sends a light beam to the LED on______(58)side.As the wheels spin and a hole rotates by,the light beam gets through to the LED on the other side.But a moment______(59)the light beam is blocked until the next hole is in place.The LED______(60)a changing pattern of light, converts the pattern______(61)an electronic signal,and sends the signal to the computer through wires in a cable that goes out of the mouse body.This cable is the tail that helps give the mouse its name.The computer interprets the signal to tell it where to position the cursor on the computer______(62). So far we have only discussed the basic computer mouse that______(63)of you probably have or have used.One problem with this design is that the mouse gets dirty as the ball rolls over the surface and picks up dirt.______(64)you have to clean your mouse.The newer optical mice______(65)this problem by having no moving parts.61._________
A:in
B:from
C:for
D:into答案：D解析：前面并没有提到过电脑鼠标，这里是泛指，又由于空格后的单词读音由元音音素开头，故选B项。the 是定冠词，特指已提到的人或物；an 是不定冠词，用在以元音音素开头的可数名词前，表示“一个”;a也是不定冠词，用在不是以元音音素开头的可数名词前，也表示“一个”。
这里表示：我们虽然每天都在用鼠标，却没人会思考鼠标是怎么工作的。make制造，制作；do做，干；get得到，收到；work工作，运作。
由空格前的“it gets dirty”可知，空格处应为clean。clear清楚的，明白的，清晰的；clerk店员，职员，办事员；dean清洁，清理；check检查，核对。
按照人类生长的一般规律，学习用手指指东西理应发生在学习说话之前。before在……之前，先于；after在……以后；until到……为止；u沮ess除非，如果不。
鼠标是一项发明创造，而不是一项发现。find发现，找到，发觉；make制作，制造；discover发现；invent发明，创造。
依照逻辑推理，电脑鼠标的引人应该是为了使电脑完成日常任务。四个介词中只有for能够表示目的。
called在这里是“被称作”之意。这句话的意思是电子发光设备被人们称为LED,A项符合题意。
根据空格前一句提到的either可知，滚轮总共有两边，两者中的另一个应用the other来表示。other与复数名词连用，与others表示相同的意思。
later表示一段时间以后，是英语中的习惯用法。late晚的，迟到的，晚期的；Iater一段时间以后；after在……之后；when当……时候。
这里说的是LED的一种功能，即它能探测光线模式的改变。detect探测，发现；develop发展，开发；relieve解除，缓解；support支持，帮助，支撑。
convert…into…是固定短语，表示“把某事物转化为另一事物”。
此处表示的是“给电脑屏幕上的光标定位”。desk书桌，办公桌；table餐桌，目录；screen屏幕；mouse鼠标。
电脑鼠标应该是大多数人都用过的，故选most。much许多，与不可数名词连用；whole全部的，所有的，完整的；most大多数的，大部分的；few不多，很少。
鼠标变脏后，最终要清理，这里用eVentually来表示。comPletely完全地，彻底地；eventually最后地，最终地；specially特别地，特意地；particularly特别，尤其。根据题意，应选B。
结合上下文语境可知，光学鼠标避免了鼠标变脏的问题。ban禁止；avoid避开，避免，防止；allow允许，承认，准许；adapt使适应，使适合。 -
第19题：
共用题干
Learn About Light
1 Ancient civilizations were amazed by the existence of light for thousands of years?The Greek philoso-
phrrs believed that light was made up of countless,tiny particles that enter the human eye and create what
we call vision.However,Empedocles and a Dutch scientist named Christian Huygens believed that light wag
like a wave.According to them,light spread out and travelled like a straight line.This theory was accepted
during the 19th century.
2 In 1905,Albert Einstein published a research paper in which he explained what is referred to as the
photoelectric effect.This theory explains that particles make up light.The particles Einstein was referring to
are weightless bundles（束）of electromagnetic（电磁）energy called photons（光子）.Today,scientists agree
that light has a dual（二重）nature一it is part particle and part wave. It is a form of energy that allows us to
see things around us.
3 Things that give off light are known as sources of light.During the day,the primary source of light is
the sun.Other sources of light include stars,flames,flashllights,street lamps and glowing gases in glass
tube.
4 When we draw the way light travels we always use straight lines.This is because normally light rays
travel in a straight line.However,there are some instances that can change the path and even the nature of
light. They are reflection,absorption,interference（干扰）,etc.
5 Physicists have attempted to measure the speed of light since the early times.In 1849,Hippolyte
Fizeau conducted an experiment by directing a beam of light to a mirror located kilometers away and placed
a rotating cogwheel（旋转齿轮）between the beam and the mirror. From the rate of rotation of the wheel,
number of wheel'S teeth and distance of the mirror,he was able to calculate that the speed of light is 313
million meters per second.In a vacuum（真空）,however,the speed of light is 299,792,458 meters per
second.This is about a million times faster than the speed of an airplane.Objects are visible to the human eye as light is_______.
A:sources of light
B:the speed of light
C:the path of light
D:a straight line
E:a beam of light
F:a form of energy答案：F解析：第二段前半部分介绍了爱因斯坦的光电效应理论，后半部分则介绍了现代科学家对于 光的看法：他们认为光具有二重性。
第三段主要讲述了光源的定义和常见的光源，故选B。
第四段主要讲述了光的传播方式以及影响光的传播方式和性质的因素，故选D。
第五段以Flippolvte Fizeau为例，介绍了物理学家是如何测定光速的，故选C。
文章第一段中只提到光像一条直线一样传播，而并非说光是一条直线。另外，由第二段 最后一句话“it is a form of energy that allows us to see things around us.”可知，光是一种能让我 们看到周围事物的能量，故选F。
山第三段的最后一句话“Other sources of light include stars, flames, flashlights, street lamps and glowing gases in glass tube.”可知，应选A。
由第四段最后两句话可知，一些因素会影响光的传播路径，这些因素包括光的反射、光 的吸收和光的干扰，故选C。
由第五段的实例可知,Hippolyte Fizcau是用一束光测出了光的速度，故选B。第4部分；阅读理解第一篇 本篇文章主要讲述了石墨烯对于将未电子学发展的重要性以及人们可用一种简单的方式发 现石、墨烯。 -
第20题：
共用题干
Computer Mouse The basic computer mouse is______(51)amazingly clever invention with a relatively simple design that allows us to point at things on the computer and it is very productive.Think of all the things you can do with a mouse like selecting text for copying and pasting , drawing , and even scrolling（滚动）on the page with the newer mice with the wheel.Most of us use the computer mouse daily without stopping to think how it______(52)until it gets dirty and we have to learn how to______(53)it.We learn to point at things______(54)we learn to speak,so the mouse is a very natural pointing device.Other computer pointing devices include light pens,graphics tablets and touch screens,but the mouse is still our workhorse. The computer mouse was_____(55)in 1964 by Douglas Englehart of Stanford University.As computer screens became more popalar and arrow keys were used to move around a body of text,it became clear that a pointing device that allowed easier motion through the text and even selection of text would be very useful.The introduction of the mouse,with the Apple lisa computer in 1983,really started the computer public on the road to relying on the mouse_____(56)routine computer tasks. How does the mouse work?We have to start at the bottom,so think upside down for now.It all starts with the mouse ball.As the mouse ball in the bottom of the mouse rolls over the mouse pad,it presses against and turns two shafts（轴）.The shafts are connected to wheels with several small holes in them.The wheels have a pair of small electronic light-emitting devices______(57) light-emitting diodes(LED)mounted on either side.One LED sends a light beam to the LED on______(58)side.As the wheels spin and a hole rotates by,the light beam gets through to the LED on the other side.But a moment______(59)the light beam is blocked until the next hole is in place.The LED______(60)a changing pattern of light, converts the pattern______(61)an electronic signal,and sends the signal to the computer through wires in a cable that goes out of the mouse body.This cable is the tail that helps give the mouse its name.The computer interprets the signal to tell it where to position the cursor on the computer______(62). So far we have only discussed the basic computer mouse that______(63)of you probably have or have used.One problem with this design is that the mouse gets dirty as the ball rolls over the surface and picks up dirt.______(64)you have to clean your mouse.The newer optical mice______(65)this problem by having no moving parts.52._________
A:makes
B:does
C:gets
D:works答案：D解析：前面并没有提到过电脑鼠标，这里是泛指，又由于空格后的单词读音由元音音素开头，故选B项。the 是定冠词，特指已提到的人或物；an 是不定冠词，用在以元音音素开头的可数名词前，表示“一个”;a也是不定冠词，用在不是以元音音素开头的可数名词前，也表示“一个”。
这里表示：我们虽然每天都在用鼠标，却没人会思考鼠标是怎么工作的。make制造，制作；do做，干；get得到，收到；work工作，运作。
由空格前的“it gets dirty”可知，空格处应为clean。clear清楚的，明白的，清晰的；clerk店员，职员，办事员；dean清洁，清理；check检查，核对。
按照人类生长的一般规律，学习用手指指东西理应发生在学习说话之前。before在……之前，先于；after在……以后；until到……为止；u沮ess除非，如果不。
鼠标是一项发明创造，而不是一项发现。find发现，找到，发觉；make制作，制造；discover发现；invent发明，创造。
依照逻辑推理，电脑鼠标的引人应该是为了使电脑完成日常任务。四个介词中只有for能够表示目的。
called在这里是“被称作”之意。这句话的意思是电子发光设备被人们称为LED,A项符合题意。
根据空格前一句提到的either可知，滚轮总共有两边，两者中的另一个应用the other来表示。other与复数名词连用，与others表示相同的意思。
later表示一段时间以后，是英语中的习惯用法。late晚的，迟到的，晚期的；Iater一段时间以后；after在……之后；when当……时候。
这里说的是LED的一种功能，即它能探测光线模式的改变。detect探测，发现；develop发展，开发；relieve解除，缓解；support支持，帮助，支撑。
convert…into…是固定短语，表示“把某事物转化为另一事物”。
此处表示的是“给电脑屏幕上的光标定位”。desk书桌，办公桌；table餐桌，目录；screen屏幕；mouse鼠标。
电脑鼠标应该是大多数人都用过的，故选most。much许多，与不可数名词连用；whole全部的，所有的，完整的；most大多数的，大部分的；few不多，很少。
鼠标变脏后，最终要清理，这里用eVentually来表示。comPletely完全地，彻底地；eventually最后地，最终地；specially特别地，特意地；particularly特别，尤其。根据题意，应选B。
结合上下文语境可知，光学鼠标避免了鼠标变脏的问题。ban禁止；avoid避开，避免，防止；allow允许，承认，准许；adapt使适应，使适合。 -
第21题：
If you are writing or studying,it makes very much difference where the light comes from.People who use books and pens every day have to be especially careful about the way the light shines on their work.
Every house gets its light either from daylight through the windows--which is the best to use--or from lamps or electricity;but whichever kind of light it is,the way it shines toward our book or work is a matter of great importance to the eyes.
Take a book,sit with your back toward the window,and try to read.Your shadow（影子）falls all over the page and makes it almost as bad for your eyes as if you were in a dark room.
Now turnaround and face the window.The page is in the shadow again,while the bright light is in your eyes.
Try sitting with your right side toward the window.This is very well for reading,but if you were writing,the shadow of your hand would fall across the page and bother（打搅）you a little.
There is just one other way:sit with your left side to the window.Now everything is perfect for reading and for writing,too.
Whatever kind of light is in the room,the rule about the right to sit is always the same.
The best way both for reading and for writing is to__________.A.sit facing the light
B.let the light shine from your back
C.sit with your right side towards the light
D.have the light come from your left答案：D解析：考情点拨:事实细节题。应试指导:从倒数第二段的内容可知，左侧朝着窗户坐着，对于读和写来说都是好的。 -
第22题：
问答题Passage 4 If you are writing or studying, it (Example: 0 ) very much difference where the light comes from. People who use books and pens every day 1 to be especially careful about the direction from which the light shines on their work. A house gets it’s light 2 from daylight through windows 3 is very good to use or from the lamps, but no matter what kind of light it is, the direction it slants(倾斜) towards our books or our work is a matter of great 4 to the eyes. Take a book, stand with your back toward the window, and try to read. Your shadow falls across the page and makes it bad for your eyes as if you were in a 5 room. Now turn 6 and face the window. The page is the shadow again, while the bright light is in your 7 . Try standing with your right side towards the window. This is very good for reading, 8 if you were writing, the shadow would 9 the page and trouble you a little. There is just one other way: stand with your 10 side to the window. Now everything is perfect for reading and for writing, too.例：0. A. make B. made C. makes【答案】C1. A. want B. have C. know2. A. either B. neither C. none3. A. what B. who C. which4. A. sorry B. illness C. importance5. A. dark B. bright C. small6. A. over B. around C. off7. A. eyes B. face C. back8. A. but B. or C. so9. A. fall down B. fall into C. fall across10. A. right B. left C. face正确答案： 1.B 考查动词用法。have to do sth.为固定用法,意为“必须做某事”。want to do sth.“想要做某事”。know知道。have to实际上是一个情态动词,用在此处含有警告或者忠告的意味。
2.A 考查连词固定搭配。由空格后与此处并列的or from…部分即可推知应选either,构成either …or…这一固定搭配,意为“要么…,要么…”。
3.C 考查从句连接词。由句子结构可知,空格后是一个从句,修饰daylight(日光)。而先行词是事物,且连接词在从句中不充当句子成分,因此应用which。
4.C 考查名词辨义与上下文理解。由句意及空格前的修饰语great可知,应选importance“重要,重要性”。(be) of great importance to意为“对…来说很重要”。
5.A 考查形容词辨义与上下文理解。dark“黑暗的”。bright“明亮的”。small“小的”。由句意及句中的shadow(阴影)、bad(不好的)及as if后所用的虚拟语气不难推知应选dark。
6.B 考查固定搭配。turn around“转身,转过来”。turn over“翻转,打翻”。turn off“关上(电器等)”。由句意可知,这里是要读者转过身来脸朝窗户,故B项正确。
7.A 考查名词与上下文理解。eye“眼睛”。face“脸”。back“背(部)”。由上下文与常识可知,脸朝窗户时,光线会照着眼睛,影响阅读,故A项正确。
8.A 考查上下文关系。由句意可知,空格前后是明显的对立关系,因此选表转折的but(然而,但是)。or表选择和让步,意为“或者,否则”。so表因果,意为“因此”。
9.C 考查固定搭配。fall across“(阴影等)投射在…上”。fall down“落下,掉下”。fall into“落入,陷入”。在前文中已经出现过fall across这一搭配,考生应能很快确定答案。
10.B 考查上下文理解。由于前面提到的是将右边(your right side)朝向窗户,并且分析的是这样做的坏处,这里肯定就是说将左边朝向窗户了,因此选与right对立的left。解析： 暂无解析 -
第23题：
单选题A list signal of one white light indicates that the vessel is （）.Aon an even keel
Blisting about 1° to the side the light is displayed on
Clisting over 5° With the light displayed on the high side
Dlisting，and the chutes should be directed to the side where the light is displayed
正确答案： B解析： 暂无解析