问答题Although multitasking kids may be better prepared in some ways for today's fast-paced workplace, many scientists are positively alarmed by the trend.
题目
问答题
Although multitasking kids may be better prepared in some ways for today's fast-paced workplace, many scientists are positively alarmed by the trend.
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更多“问答题Although multitasking kids may be better prepared in some ways for today's fast-paced workplace, many scientists are positively alarmed by the trend.”相关问题
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第1题：
Today many young people()change jobs to better themselves, or simply to gain experience.A.always
B.frequently
正确答案: B
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第2题：
Although they differ in some ways, they are ______ to each other in hobbies.
A. similar
B. same
C. different
D. like
参考答案A
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第3题：
The term “multitasking” originally referred to a computer’s ability to carry out several tasks at one time. For many people, multitasking has become a way of life and even a key to success. In fact, some excellent mental aerobic exercises (大脑训练) involve engaging the brain in two or more challenging activities at a time. Although checking e-mail while talking on a phone and reading the newspaper may be second nature for some people, many times multitasking can make us less productive, rather than more. And studies show that too much multitasking can lead to increased stress, anxiety and memory loss.
In order to multitask, the brain uses an area known as the prefrontal cortex (前额叶脑皮层). Brian scans of volunteers performing multiple tasks together show that as they shift from task to task, this front part of the brain actually takes a moment of rest between tasks. You may have experienced a prefrontal cortex “moment of rest” yourself if you’ve ever dialed (拨电话) a phone number and suddenly forgotten who you dialed when the line is answered. What probably occurred is that between the dialing and the answering, your mind shifted to anther thought or task, and then took that “moment” to come back. Research has also shown that for many volunteers, job efficiency (效率) declines while multitasking, as compared to when they perform. only one task at a time.
Multitasking is easiest when at least one of the tasks is habitual, or requires little thought. Most people don’t find it difficult to eat and read the newspaper at the same time. However, when two or more attention-requiring tasks are attempted at one time, people sometimes make mistakes.
We often don’t remember things as well when we’re trying to manage several details at the same time. Without mental focus, we may not pay enough attention to new information coming in, so it never makes it into our memory stores. That is one of the main reasons we forget people’s names---even sometimes right after they have introduced themselves. Multitasking can also affect our relationships. If someone checks their e-mail while on the phone with a friend, they may come off as absent-minded or disinterested. It can also cause that person to miss or overlook key information being passed on to them.
49. Why are some mental aerobic exercises designed to engage people in multitasking?
A. To make them more productive.
B. To reduce their stress and anxiety.
C. To develop their communication skills.
D. To help them perform. daily tasks more easily.
正确答案：A
解析：推理判断题。根据第一段的内容可知，作者提出：“In fact, some excellent mental aerobic exercises (大脑训练) involve engaging the brain in two or more challenging activities at a time.”，之后用although引出转折，这种训练有时并不能productive。所以选择A。有部分人认为这种大脑的训练能够帮助他们高效的工作。 -
第4题：
共用题干
第二篇
Natural Medicines
Since earliest days,humans have used some kinds of medicines.We know this because humans have
survived.Ancient treatments for injury and disease were successful enough to keep humans from dying out
completely.
They were successful long before the time of modern medicine.Before the time of doctors with white
coats and shiny（发亮的）instruments. Before the time of big hospitals with strange and wonderful equipment.
Many parts of the world still do not have university-educated doctors. Nor do they have expensive hospi-
tals.Yet injuries are treated.And diseases are often cured.How?By ancient methods.By medicines that
might seem mysterious , even magical（有魔力的）.Traditional medicines are neither mysterious nor magical,
however.
Through the centuries, tribal（部族的）medicine men experimented with plants. They found many use-
ful chemicals in the plants.And scientists believe many of these traditional medicines may provide the cure
for some of today's most serious diseases.
Experts say almost 80% of the people in the world use plants for health care.These natural medicines
are used not just because people have no other form of treatment.They are used because people trust them.
In developed areas,few people think about the source of the medicines they buy in a store.Yet many wide-
ly-used medicines are from ancient sources,especially plants.Some experts say more than 25% of modern
medicines come,in one way or another,from nature.
Scientists have long known that nature is really a chemical factory.All living things contain chemicals
that help them survive.So scientists' interest in traditional medicine is not new.But it has become an ur-
gent concern.This is because the earth's supply of natural medicines may be dropping rapidly.It is believed by scientists that traditional medicines__________.
A:can cure all kinds of diseases
B:may cure some of today's most serious diseases
C:are no longer useful for modern men
D:are too cheap to be useful答案：B解析：由文章第一段第二句话可知，古代的医疗手段已经足以让人类免于完全灭亡，即生存 下去。故选B。
由文章第三段可知，现在世界上的很多地方仍然没有高学历的医生，也没有治疗费昂贵的医院，但这些地方的人们仍有办法治疗疾病。他们仍然使用古老的医疗办法来治病。故 选A。
由文章第四段最后一句话可知，科学家们相信这些古老的医疗手段可能会给现今最严 重的疾病提供治愈方法。故选B。
由文章第五段第一句话可知，专家们说世界上80％的人们在用植物草药做医疗保健。 故选D。或者根据文章主题（文章标题Natural Medicine）直接选择答案。
由文章最后一段最后一句话，可知地球上的天然药物的供给量可能会急速下降。故 选B。第三篇 本篇文章主要讲述了人类为了改善生活使用技术工具改变了地球的自然面貌，在给自己带 来便利的同时却污染了环境，影响了生态平衡。 -
第5题：
According to the author, topics of small talk may include comments on__________.A.some political issues
B.one's physical condition
C.other's ways of dress
D.the traffic jam答案：D解析：由文章第八段“Thetopics of smalltalk don’tmatter．Infact，youdon’twantanythingmoretaxing than the weather or the traffic,"可知．琐谈一般都是关于天气或者交通的轻松话题。故选D项。 -
第6题：
At the first sight the planet Mars does not appear very welcome to any kind of life．It has very little oxygen and water,the temperature at night is below-50~Cand winds of 100 miles per hour cause severe dust storms．However,the surface of the planet seems to show that water flowed across it some time in the past,and it is believed that there is enough ice at the poles to cover the planet with water if it melts．Although there is no life on the Mars now,some scientists think that there may have been some form of life long time ago．At that time,the planet had active volcanoes;the atmosphere was thicker and warmer;and there was water．In fact,in some ways the Mars may have been similar to the Earth,where life exists.
Some people believe that the Mars could support life in the future if the right conditions were produced．The first step would be to warm the planet using certain gases which trap the Sun's heat in the planet's atmosphere．With warmth,water and carbon dioxide(二氧化碳),simple plants could begin to grow．These plants could slowly make the Mars more suitable for living．It is estimated that the whole process might take between 100,000 and 200,000 years．In the meantime,people could begin to live on the planet in special closed environments．They would provide a lot of useful information about conditions on the Mars and the problems connected with living there.
Some scientists think there may have been life on the Mars in the past because__.A.there is no life there now
B.there is a large amount of water at the poles
C.the Mars may be able to support life in the future
D.conditions may have been similar to those on the Earth答案：D解析：第一段大意是：人们最初对火星的印象是火星上不可能有生命。因为几乎没有氧气和水，并且夜间温度低于-50°C，同时还有每小时l00英里的风速引起的严重的沙尘暴。然而星球的表面却告诉我们，过去的某个时段水曾经从这里流过。人们相信极地有足够的冰，一旦融化便可覆盖整个星球。虽然现在火星上没有生命，但在过去很久很久以前，生命很有可能存在过。由此可看出，生命所需的条件——水和氧——在火星上和在地球上是相似的。所以选项D正确。而选项B说火星上有水是不对的。火星的极地有冰，只有当冰融化后才能使整个星球有水。 -
第7题：
Text 1 Smartphones have by now been implicated in so many crummy outcomes-car fatalities,sleep disturbances,empathy loss,relationship problems,failure to notice a clown on a unicycle-that it almost seems easier to list the things they don't mess up than the things they do.Our society may be reaching peak criticism of digital devices.Even so.emerging research suggests that a kev Droblem remains underaDDreciated.It involves kids'development,but it's probably not what you think.More than screen-obsessed young children,we should be concerned about tuned-out parents.Yes,parents now have more face time with their children than did almost any parents in history.Despite a dramatic increase in the percentage of women in the workforce,mothers today astoundingly spend morc time caring for their children than mothers did in the 1960s.But the engagement between parent and child is increasingly Iow-quality,even ersatz.Parents are constantly present in their children's lives physically,but they are less emotionally attuned.To be clear,I'm not unsympathetic to parents in this predicament.My own adult children like to joke that they wouldn't have survived infancy ifl'd had a smartphone in my clutches 25 years ago.To argue that parents'use of screens is an underappreciated problem isn't to discount the direct risks screens pose to children:Substantial evidence suggests that many types of screen time（especially those involving fast-paced or violent imagery）are damaging to young brains.Today's preschoolers spend more than four hours a day facing a screen.And,since 1970,the average age of onset of"regular"screen use has gone from 4 years to just four months.Some of the newer interactive games kids play on phones or tablets may be more benign than watching TV or YouTube,in that they better mimic children's natural play behaviors.And,of course,many well-functioning adults survived a mind-numbing childhood spent watching a lot of cognitive garbage.（My mother-unusually for her time-prohibited Speed Racer and Gilligan's Island on the grounds of insipidness.That I somehow managed to watch every single episode of each show scores of times has never been explained.）Still,no one really disputes the tremendous opportunity costs to young children who are plugged in to a screen:Time spent on devices is time not spent actively exploring the world and relating to other human beings.
Which kind of game may be wholesome for kids?A.A game with limited episode.
B.A game according with their nature.
C.A game testing cognitive level.
D.A game promoting brain development.答案：B解析：事实细节题。根据定位词定位到文章最后一段，原文指出孩子们在手机或平板电脑上玩的一些较新的互动游戏可能比看电视或YouTube更有益，因为它们更能模仿孩子天性的游戏行为，B项属于合理推断，故B项为正确选项。【干扰排除】A项利用episode作干扰；c项利用cognitive作干扰；D项原文未提及。故均排除。 -
第8题：
共用题干
Natural Medicines
Since earliest days,humans have used some kinds of medicines.We know this because humans have survived.Ancient treatments for injury and disease were successful enough to keep humans from dying out completely.
They were successful long before the time of modern medicine. Before the time of doctors with white coats and shiny（发亮的）instruments. Before the time of big hospitals with strange and wonderful equipment.
Many parts of the world still do not have university-educated doctors. Nor do they have expensive hospitals.Yet injuries are treated.And diseases are often cured.How?By ancient methods. By medicines that might seem mysterious , even magical（有魔力的）.Traditional medicines are neither mysterious nor magical,however.
Through the centuries , tribal（部落的）medicine men experimented with plants. They found
many useful chemicals in the plants.And scientists believe many of these traditional medicines
may provide the cure for some of today's most serious diseases.
Experts say almost 80% of the people in the world use plants for health care.These natural medicines are used not just because people have no other form of treatment. They are used because people trust them. In developed areas,few people think about the source of the medicines they buy in a store .Yet many widely-used medicines are from ancient sources,especially plants.
Some experts say more than 25%of modem medicines come,in one way or another,from nature.
Scientists have long known that nature is really a chemical factory. All living things contain chemicals that help them survive .So scientists' interest in traditional medicine is not new.But it has become an urgent concern.This is because the earth's supply of natural medicines may be dropping rapidly.It can be seen from the passage that the earth's supply of natural medicines______.
A: may never be exhausted
B: may be dropping rapidly
C: is surprisingly big
D: is as rich as ever答案：B解析：第一段中“...successful enough to keep humans from dying out completely"（有效地使人类免于完全消亡）与选项B" successful enough for humans to survive"（有效地使人类生存下来）意思一样。短文中并没有对选项A的内容做比较，实际上也不可能笼统地做这种比较。选项C和D凭常识也能做出判断，绝时肯定和绝对否定都是错误的。
第三段第一句和第二句对选项A中的“all over the world”作了否定，而其他三个选项的内容在短文中都直接或间接谈到：选项B的内容在第二段最后一句和第三段第一句、第二句都间接提到，我们自然会想到，大医院有现代化的医疗设备，有经过高等教育的医生，有现代化的药品，看病的价格当然昂贵；第三段最后一句的内容与选项C的文字完全相同；第一段第一句的内容与选项D的内容也相同。
第四段最后一句提供了本问题的答案，两处除了句子结构不同以外，文字完全相同。其他三个选项的内容短文都没有提及，根据常识判断也可以知道它们不是正确答案。
第五段第一句直接提供了本题的答案。
短文最后一句直接提供了本问题的答案，其他三个选项均与此完全相反。 -
第9题：
单选题Since many insects have already become（）to DDT, scientists have to look for some new insecticideAactive
Bresistant
Ctough
Dgradual
正确答案： A解析： 暂无解析 -
第10题：
单选题What do educators and psychologists advise parents to do their multitasking kids?ATo cut off home internet connection.
BTo seek medical treatment.
CTo encourage their kids to have some social life.
DTo help their kids to set personal goals.
正确答案： D解析：
根据文章最后一段“so many kids lead highly scheduled lives that leave little time for old-fashioned socializing and family meals”以及“Just as important is for parents and educators to teach kids that it’s valuable, even essential to occasionally slow down, unplugs and take time to enjoy life beyond the screen”可知，专家们建议孩子们应该适度地从电脑屏幕中解放出来，多去参加一些像家庭聚会这样的社交活动。 -
第11题：
单选题Every office has a dress code,but in today’s（）workplace，they aren’t always written.Acausal
Bcapable
Ccapital
Dcasual
正确答案： D解析： 暂无解析 -
第12题：
单选题According to the passage, which of the following statement is TRUE?AHumans have begun to engage in the multitasking behaviors since the information age.
BMultitasking is a critical skill that students are required to learn at school.
COnly parents can help their kids to get rid of the multitasking habits.
Dmultitasking may prepare students for the reality of today's fast-paces work environment.
正确答案： B解析：
根据第三段的第一句话“Although multitasking kids may be better prepared in some ways for today’s fast-paced work places”可知这种同时处理多项任务的能力能帮助孩子们适应现在快节奏的生活方式。这与选项D的说法是一致。 -
第13题：
Although many people want to live a long life, the secret of () is still a mystery today.
A、longevity
B、happy
C、health
D、happiness
参考答案：A
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第14题：
Which of the following statements is NOT true?（ ）
[A] Sales of contemporary art fell dramatically from 2007 to 2008.
[B] The art market surpassed many other industries in momentum.
[C] The art market generally went downward in various ways.
[D] Some art dealers were awaiting better chances to come.
正确答案：B
下列哪一项表述是不正确的?
[A]从2007年到2008年当代艺术品的销售急剧下滑。
[B]艺术品市场在势头上超过了很多其他行业。
[C]在整体上艺术品市场在很多方面下滑了。
[D]一些艺术品交易者在等待更好时机的到来。
答案解析：[B]事实细节题。文章第二段第一句提到了“momentum”，意为“势头”，即“世界艺术品市场已经有一段时间失去了它的发展势头”。本段最后一句提到“但是这个市场产生的利益远远超出它本身的规模，因为它可以把巨大的财富、膨胀的自我、贪婪、激情和争议以某种方式结合在一起，其他行业很少能与之媲美。”在这里，作者比较的是艺术品市场和其他行业在“把财富、自我、贪婪、激情和争议结合在一起”的方式方面，而不是发展的势头，[B]的论述张冠李戴，是错误的，故为答案。由文章第三段第三句可知[A]是正确的，[C]是全文的主题，有很多数据可以证明，而[D]在全文最后一段的最后一句可以找到明确表述，这三项都是正确的，故均排除。 -
第15题：
共用题干
Bedwetting
Millions of kids and teenagers from every part of the world wet the bed every single night,it's so common that there are probably other kids in your class who do it.Most kids don't______(51)their friends,so it's easy to feel kind of alone,like you might be the only one on the whole planet who wets the bed.But you are not______(52).
The fancy______ (53)for bedwetting is nocturnal enuresis（夜间遗尿）.Enuresis runs in families.This means that if you urinate（排尿）,or pee, while you are______(54) ,there's a good______(55) that a close relative also did it when he or she was a kid.Just like you may have______(56)your mom's blue eyes or your uncle's long legs,you probably inherited bedwetting,too.
The most important thing to remember is that no one______(57)the bed on purpose.It doesn't mean that you ' re______ ( 58 ) or a slob（懒汉）.It ' s something you can ' t help______( 59 ).For some reason, kids who wet the bed are not able to feel that their bladder（膀胱）is full and don't______(60)up to pee in the toilet.Sometimes a kid who wets the bed will have a realistic______(61)that he is in the bathroom peeing-only to wake up later and discover he's all wet.Many kids who wet the bed are very______(62) sleepers.Trying to wake up someone who wets the bed is often like trying to wake a log-they just stay asleep.
Some kids who wet the bed do it every single night.Others wet some nights and are______(63)on others.A lot of kids say that they seem to be drier when they sleep at a friend's or a relative's house.That's because kids who are anxious______(64)wetting the bed may not sleep much or only very lightly.So the brain may be thinking,"Hey,you!Don't wet someone else's bed!"This can help you ______(65)dry even if you're not aware of it.52._________
A:lonely
B:yourself
C:one
D:alone答案：D解析：speak意思为“谈，讲”，主要强调说话的方式；report意思为“报告，报道”; tell意思为“告诉”，指将事情或信息传达给某人；ask意思为“请求，要求”。根据文章内容可知，应选C。
But所引导的句子和之前的句子构成转折关系。前一句话中提到the only one，则此空处应填notalone。 alone指“孤单的，孤独的”, lonely也为“孤独”之意，但强调的是心灵上的孤独。
由文章内容可知，nocturnal enuresis是bedwetting的别名，因此答案为C。
此处所讲的内容为夜间遗尿的现象，因此该空应选择asleep，表示“睡着的”。unknown意思为“未知的”; unaware意思为“未认识到的”; sleepy表示“昏昏欲睡的”，但并没有睡着。
据前文中。" Enuresis runs in families."可知，果一个人发生夜间遗尿现象那么很有可能其近亲孩提时也发生过此种情况。chance表示“机会，可能性”，符合句意。
由该句子的后半部分中的inherit和too可以得知，此空处应填inherit，表示“遗传得到”。
wet意思是“弄湿，使……潮湿”，符合句意。climb爬，攀登；care关心；fix固定，修理。
该空处的词和or之后的a slob（懒汉）为并列关系，lazy意思是“懒惰的”，符合文意。 untidy不整洁的；unclear不清楚的，不明白的；stupid愚蠢的。
本句中something之后的成分为定语从句，对something起修饰限定的作用。can ' t help doing something意为“情不自禁做某事”，符合文意。
wake up为固定搭配，含义是“醒来，唤醒”，符合文意。live up to不辜负；set up建立，安排；rise up上升，起义。
由下文破折号之后的wake up later可知，此处是表示在睡梦中，故选dream。 memory记忆；thought想法，思想；idea主意，想法。
deep sleeper意思是“深度睡眠者”，表示睡眠程度深、不容易被唤醒的人，与下一句的意思相呼应，故选A。
由上下文可知，该句的意思是“一些孩子有时会出现晚上遗尿现象，而有时则不会”, dry的意思是“干的”，和前面的wet对应，符合文意。bad坏的；sad伤心的；poor贫穷的。
be anxious about为固定用法，意思是“忧虑，担心”，符合文意。
stay意思是“保持”, stay dry即指不发生遗尿的情况，符合文意。end结束，终止；last持续；begin开始。 -
第16题：
Although there are disagreements over the definition of revolution,there is a standard view that revolutions are successful social movements on a much grander（ ）.That is,involving more people and much more social change.Although social movement like the U.S.Civil Rights
Movement may be working to enact some law or produce some reform in the society,revolutions like the Chinese Revolution are aimed at major social change.A.level
B.scale
C.degree
D.range答案：B解析：on a grand scale即“大规模地”，是常用搭配。A.level“水平，水准，级别”；C.degree“等级，程度，温度”，如：by degrees渐渐地；in no degree一点也不；in a degree惊人地；D.range“范围，系列，射程”，如：a country with a wide range of temperature一个气温变化很大的国家；people in the￡3,000/4,000 income range收入在三千至四千镑之间的人。 -
第17题：
共用题干
Natural Medicines
Since earliest days,humans have used some kinds of medicines.We know this because hu-mans have survived .Ancient treatments for injury and disease were successful enough to keep hu-mans from dying out completely.
They were successful long before the time of modern medicine.Before the time of doctors with white coats and shiny（发亮的）instruments. Before the time of big hospitals with strange and wonderful equipment.
Many parts of the world still do not have university-educated doctors.Nor do they have ex- pensive hospitals.Yet injuries are treated.And diseases are often cured.How?By ancient meth- ods. By medicines that might seem mysterious, even magical（有魔力的）.Traditional medicines are neither mysterious nor magical,however.
Through the centuries, tribal（部落的）medicine men experimented with plants. They found many useful chemicals in the plants.And scientists believe many of these traditional medicines may provide the cure for some of today's most serious diseases.
Experts say almost 80%of the people in the world use plants for health care.These natural medicines are used not just because people have no other form of treatment.They are used be-cause people trust them.In developed areas,few people think about the source of the medicines they buy in a store.Yet many widely-used medicines are from ancient sources,especially plants. Some experts say more than 25%of modern medicines come,in one way or another,from nature.
Scientists have long known that nature is really a chemical factory.All living things contain chemicals that help them survive .So scientists' interest in traditional medicine is not new.But it has become an urgent concern.This is because the earth's supply of natural medicines may be dropping rapidly.It is believed by scientists that traditional medicines______.
A:cancureallkindsofdiseases
B: maycuresomeoftoday,smostseriousdiseases
C: arenolongerusefulformodernmen
D: aretoocheaptoheuseful答案：B解析：第一段“…successful enough to keep humans from dying out completely”（有效地使人类免于完全消亡）与选项B“ successful enough for humans to survive”（有效地使人类生存下来）意思一样。短文中并没有对选项A的内容做比较，实际上也不可能笼统地做这种比较。选项C和D凭常识也能做出判断，绝对肯定和绝对否定都是错误的。
第三段第一句和第二句对选项A中的“all over the world”作了否定，而其他三个选项的内容在短文中都直接或间接谈到：选项B的内容在第二段最后一句和第三段第一句、第二句都间接提到，我们自然会想到，大医院有现代化的医疗设备，有经过高等教育的医生，有现代化的药品，看病的价格当然昂贵；第三段最后一句的内容与选项C的文字完全相同；第一段第一句的内容与选项D的内容也相同。
第四段最后一句提供了本问题的答案，两处除了句子结构不同以外，文字完全相同。其他三个选项的内容短文都没有提及，根据常识判断也可以知道它们不是正确答案。
第五段第一句直接提供了本题的答案。
短文最后一句直接提供了本问题的答案，其他三个选项均与此完全相反。 -
第18题：
Text 1 Smartphones have by now been implicated in so many crummy outcomes-car fatalities,sleep disturbances,empathy loss,relationship problems,failure to notice a clown on a unicycle-that it almost seems easier to list the things they don't mess up than the things they do.Our society may be reaching peak criticism of digital devices.Even so.emerging research suggests that a kev Droblem remains underaDDreciated.It involves kids'development,but it's probably not what you think.More than screen-obsessed young children,we should be concerned about tuned-out parents.Yes,parents now have more face time with their children than did almost any parents in history.Despite a dramatic increase in the percentage of women in the workforce,mothers today astoundingly spend morc time caring for their children than mothers did in the 1960s.But the engagement between parent and child is increasingly Iow-quality,even ersatz.Parents are constantly present in their children's lives physically,but they are less emotionally attuned.To be clear,I'm not unsympathetic to parents in this predicament.My own adult children like to joke that they wouldn't have survived infancy ifl'd had a smartphone in my clutches 25 years ago.To argue that parents'use of screens is an underappreciated problem isn't to discount the direct risks screens pose to children:Substantial evidence suggests that many types of screen time（especially those involving fast-paced or violent imagery）are damaging to young brains.Today's preschoolers spend more than four hours a day facing a screen.And,since 1970,the average age of onset of"regular"screen use has gone from 4 years to just four months.Some of the newer interactive games kids play on phones or tablets may be more benign than watching TV or YouTube,in that they better mimic children's natural play behaviors.And,of course,many well-functioning adults survived a mind-numbing childhood spent watching a lot of cognitive garbage.（My mother-unusually for her time-prohibited Speed Racer and Gilligan's Island on the grounds of insipidness.That I somehow managed to watch every single episode of each show scores of times has never been explained.）Still,no one really disputes the tremendous opportunity costs to young children who are plugged in to a screen:Time spent on devices is time not spent actively exploring the world and relating to other human beings.
The word"ersatz"（Para.3）most probably means_____A.invalid
B.disputable
C.unreal
D.insufficient答案：C解析：词汇理解题。根据定位词定位到文章第三段。根据单词所在句的句意：但是父母和孩子之间的交流质量越来越低，甚至是。父母通常在孩子的物质生活上投入关心，但在情感上，投入却很少。比质量低还差的应该是假的，不真实的，故C项为正确选项。【干扰排除】根据以上分析可知，A项invalid“无效的”、B项disputable“有争议的”、D项insufficient“不足的”均不符合原文语义，故均排除。 -
第19题：
共用题干
Natural Medicines
Since earliest days,humans have used some kinds of medicines.We know this because humans have survived.Ancient treatments for injury and disease were successful enough to keep humans from dying out completely.
They were successful long before the time of modern medicine. Before the time of doctors with white coats and shiny（发亮的）instruments. Before the time of big hospitals with strange and wonderful equipment.
Many parts of the world still do not have university-educated doctors. Nor do they have expensive hospitals.Yet injuries are treated.And diseases are often cured.How?By ancient methods. By medicines that might seem mysterious , even magical（有魔力的）.Traditional medicines are neither mysterious nor magical,however.
Through the centuries , tribal（部落的）medicine men experimented with plants. They found
many useful chemicals in the plants.And scientists believe many of these traditional medicines
may provide the cure for some of today's most serious diseases.
Experts say almost 80% of the people in the world use plants for health care.These natural medicines are used not just because people have no other form of treatment. They are used because people trust them. In developed areas,few people think about the source of the medicines they buy in a store .Yet many widely-used medicines are from ancient sources,especially plants.
Some experts say more than 25%of modem medicines come,in one way or another,from nature.
Scientists have long known that nature is really a chemical factory. All living things contain chemicals that help them survive .So scientists' interest in traditional medicine is not new.But it has become an urgent concern.This is because the earth's supply of natural medicines may be dropping rapidly.It is believed by scientists that traditional medicines______.
A: can cure all kinds of diseases
B: may cure some of today's most serious diseases
C: are no longer useful for modern men
D: are too cheap to be useful答案：B解析：第一段中“...successful enough to keep humans from dying out completely"（有效地使人类免于完全消亡）与选项B" successful enough for humans to survive"（有效地使人类生存下来）意思一样。短文中并没有对选项A的内容做比较，实际上也不可能笼统地做这种比较。选项C和D凭常识也能做出判断，绝时肯定和绝对否定都是错误的。
第三段第一句和第二句对选项A中的“all over the world”作了否定，而其他三个选项的内容在短文中都直接或间接谈到：选项B的内容在第二段最后一句和第三段第一句、第二句都间接提到，我们自然会想到，大医院有现代化的医疗设备，有经过高等教育的医生，有现代化的药品，看病的价格当然昂贵；第三段最后一句的内容与选项C的文字完全相同；第一段第一句的内容与选项D的内容也相同。
第四段最后一句提供了本问题的答案，两处除了句子结构不同以外，文字完全相同。其他三个选项的内容短文都没有提及，根据常识判断也可以知道它们不是正确答案。
第五段第一句直接提供了本题的答案。
短文最后一句直接提供了本问题的答案，其他三个选项均与此完全相反。 -
第20题：
共用题干
Natural Medicines
Since earliest days,humans have used some kinds of medicines.We know this because hu- mans have survived .Ancient treatments for injury and disease were successful enough to keep hu- mans from dying out completely.
They were successful long before the time of modern medicine.Before the time of doctors with white coats and shiny（发亮的）instruments. Before the time of big hospitals with strange and wonderful equipment.
Many parts of the world still do not have university-educated doctors.Nor do they have ex-pensive hospitals.Yet injuries are treated.And diseases are often cured.How?By ancient meth- ods. By medicines that might seem mysterious, even magical（有魔力的）.Traditional medicines are neither mysterious nor magical,however.
Through the centuries, tribal（部落的）medicine men experimented with plants. They found many useful chemicals in the plants.And scientists believe many of these traditional medicines may provide the cure for some of today's most serious diseases.
Experts say almost 80% of the people in the world use plants for health care.These natural medicines are used not just because people have no other form of treatment.They are used be-cause people trust them.In developed areas,few people think about the source of the medicines they buy in a store .Yet many widely-used medicines are from ancient sources,especially plants. Some experts say more than 25%of modern medicines come,in one way or another,from nature.
Scientists have long known that nature is really a chemical factory.All living things contain chemicals that help them survive.So scientists' interest in traditional medicine is not new.But it has become an urgent concern.This is because the earth's supply of natural medicines may be dropping rapidly.It can be seen from the passage that the earth's supply of natural medicines______.
A: may never be exhausted
B: may be dropping rapidly
C: is surprisingly big
D: is as rich as ever答案：B解析：第一段中“…successful enough to keep humans from dying out completely” (有效地使人类免于完全灭绝）与选项B“successful enough for humans to survive ”（有效地使人类生存下来）意思一样。短文中并没有对选项A的内容做比较，实际上也不可能笼统地做这种比较。选项C和D凭常识也能做出判断，绝对肯定和绝对否定都是错误的。
第三段第一句和第二句时选项A中的“all over the world”作了否定，而其他三个选项的内容在短文中都直接或间接谈到：选项B的内容在第二段最后一句和第三段第一句、第二句都间接提到，我们自然会想到，大医院有现代化的医疗设备，有受过高等教育的医生，有现代化的药品，看病的价格当然昂贵；第三段最后一句的内容与选项C的文字完全相同；第一段第一句的内容与选项D的内容也完全相同（除了时间状语的变动以外）。
第四段最后一句提供了本问题的答案，两处除了句子结构不同以外，文字完全相同。其他三个选项的内容短文都没有提及，根据常识判断也可以知道它们不是正确答案。
第五段第一句直接提供了本题的答案。
短文最后一句直接提供了本问题的答案，其他三个选项均与此完全相反。 -
第21题：
单选题According to the passage, which of the following statement is TRUE?AHumans have begun to engage in the multitasking behaviors since the information age.
BMultitasking is a critical skill that students are required to learn at school.
COnly parents can help their kids to get rid of the multitasking habits.
Dmultitasking may prepare student.s for the reality of today's fast-paces workenvironment.
正确答案： A解析： -
第22题：
单选题Many people are against the use of chemicals to preserve food because ______.Achemicals are not necessary for preserving food
Ba small quantity of bacteria in food is good to people
Cthose chemicals that kill bacteria may not be good to people
Dthere are other better ways to preserve food
正确答案： A解析：
根据文章最后两句Some people oppose the use of chemicals in food. They say that these chemicals may harm people if the chemicals can harm bacteria.可知，人们反对使用化学物质来保存食物的原因是这些化学物质可能对人有害，C)是对这句话的同义转述。 -
第23题：
单选题Although some countries have taken action to solve the shortage of water，it may be sometime_____ the situation improves•Abefore
Bwhen
Csince
Duntil
正确答案： C解析：