单选题According to the passage, which of the following statements is NOT true?A The potential health hazards of mobile phones call for further research.B The Australian scientists find no connection between growth of tumors in human body and radiation from m
题目
单选题
According to the passage, which of the following statements is NOT true?
A
The potential health hazards of mobile phones call for further research.
B
The Australian scientists find no connection between growth of tumors in human body and radiation from mobile phones.
C
The Italian scientists’ belief is shared by other scientists.
D
The British government inquiry didn’t establish any link between health risks and use of mobile phones.
相似考题
更多“单选题According to the passage, which of the following statements is NOT true?A The potential health hazards of mobile phones call for further research.B The Australian scientists find no connection between growth of tumors in human body and radiation from m”相关问题
-
第1题：
Which of the following statements is NOT true according to the passage?
A. There are about 10 percent disabled persons in the UK.
B. The whole society should pay attention to the barriers faced by the disabled people.
C. Even the able-bodied may lose some of their body functions when they get older.
D. There still exists prejudice against the disabled which results mainly from ignorance.
正确答案：D44．答案为D。用排除法，选项D与第四段第四句prejudice can be even harder to break down and ignorance inevitably represents by far the greatest barrier of all不符。选项A在第二段第一句提到；选项B在最后一段最后一句提到；选项C在第三段第三句提到。
-
第2题：
共用题干
第二篇
Cell Phones : Hang Up or Keep Talking?
Millions of people are using cell phones today.In many places it is actually considered unusual not to
use one.In many countries,cell phones are very popular with young people.They find that the phones are
more than a means of communication一having a mobile phone shows that they are cool and connected.
The explosions around the world in mobile phone use make some health professionals worried.Some
doctors are concerned that in the future many people may suffer health problems from the use of mobile
phones.In England,there has been a serious debate about this issue. Mobile phone companies are worried about
the negative publicity of such ideas.They say that there is no proof that mobile phones are bad for your health.
On the other hand,why do some medical studies show changes in the brain cells of some people who use
mobile phones?Signs of change in the tissues of the brain and head can be detected with modern scanning
equipment. In one case,a traveling salesman had to retire at a young age because of serious memory loss.He
couldn't remember even simple tasks.He would often forget the name of his own son.This man used to talk
on his mobile phone for about six hours a day,every day of his working week,for a couple of years. His family
doctor blamed his mobile phone use,but his employer's doctor didn't agree.
What is it that makes mobile phones potentially harmful?The answer is radiation.High-tech machines
can detect very small amounts of radiation from mobile phones.Mobile phone companies agree that there is
some radiation,but they say the amount is too small to worry about.
As the discussion about their safety continues,it appears that it's best to use mobile phones less often.
Use your regular phone if you want to talk for a long time.Use your mobile phone only when you really need
it. Mobile phones can be very useful and convenient,especially in emergencies.In the future,mobile phones
may have a warning label that says they are bad for your health.So for now,it's wise not to use your mobile
phone too often.On the safety issue of mobile phones,the manufacturing companies_________.
A:deny the existence of mobile phone radiation
B:develop new technology to reduce mobile phone radiation
C:try to prove that mobile phones are not harmful to health
D:hold that the amount of radiation is too small to worry about答案：D解析：由第一段第三句“cell phones are very popular”可知A项正确。由最后一段第四句“very useful and convenient”可知，B、D两项正确。故选C。
根据语境可知detect的意思是“发现，查明”。故选C。
由第三段可知那位销售员是因为严重的记忆问题而退休的，他连简单的任务都记不 住，故选D。
由第四段最后一句可知，移动公司承认手机有一些辐射，但他们认为辐射的量很小，无 需担心。
由文章最后一句可知，作者建议大家尽量少使用手机。 第三篇 本篇文章讲述了对杭微生物的杭力应引起注意。 -
第3题：
共用题干
第二篇
Cell Phones : Hang Up or Keep Talking?
Millions of people are using cell phones today.In many places it is actually considered unusual not to
use one.In many countries,cell phones are very popular with young people.They find that the phones are
more than a means of communication一having a mobile phone shows that they are cool and connected.
The explosions around the world in mobile phone use make some health professionals worried.Some
doctors are concerned that in the future many people may suffer health problems from the use of mobile
phones.In England,there has been a serious debate about this issue. Mobile phone companies are worried about
the negative publicity of such ideas.They say that there is no proof that mobile phones are bad for your health.
On the other hand,why do some medical studies show changes in the brain cells of some people who use
mobile phones?Signs of change in the tissues of the brain and head can be detected with modern scanning
equipment. In one case,a traveling salesman had to retire at a young age because of serious memory loss.He
couldn't remember even simple tasks.He would often forget the name of his own son.This man used to talk
on his mobile phone for about six hours a day,every day of his working week,for a couple of years. His family
doctor blamed his mobile phone use,but his employer's doctor didn't agree.
What is it that makes mobile phones potentially harmful?The answer is radiation.High-tech machines
can detect very small amounts of radiation from mobile phones.Mobile phone companies agree that there is
some radiation,but they say the amount is too small to worry about.
As the discussion about their safety continues,it appears that it's best to use mobile phones less often.
Use your regular phone if you want to talk for a long time.Use your mobile phone only when you really need
it. Mobile phones can be very useful and convenient,especially in emergencies.In the future,mobile phones
may have a warning label that says they are bad for your health.So for now,it's wise not to use your mobile
phone too often.People buy cell phones for the following reasons EXCEPT that_________.
A:they're popular
B:they're useful
C:they're cheap
D:they're convenient答案：C解析：由第一段第三句“cell phones are very popular”可知A项正确。由最后一段第四句“very useful and convenient”可知，B、D两项正确。故选C。
根据语境可知detect的意思是“发现，查明”。故选C。
由第三段可知那位销售员是因为严重的记忆问题而退休的，他连简单的任务都记不 住，故选D。
由第四段最后一句可知，移动公司承认手机有一些辐射，但他们认为辐射的量很小，无 需担心。
由文章最后一句可知，作者建议大家尽量少使用手机。 第三篇 本篇文章讲述了对杭微生物的杭力应引起注意。 -
第4题：
共用题干
第二篇
Cell Phones: Hang Up or Keep Talking?
Millions of people are using cell phones today.In many places it is actually considered unusual not to
use one.In many countries,cell phones are very popular with young people.They find that the phones are
more than a means of communication一having a mobile phone shows that they are cool and connected.
The explosions around the world in mobile phone use make some health professionals worried.Some
doctors are concerned that in the future many people may suffer health problems from the use of mobile
phones.In England,there has been a serious debate about this issue.Mobile phone companies are worried about
the negative publicity of such ideas.They say that there is no proof that mobile phones are bad for your health.
On the other hand,why do some medical studies show changes in the brain cells of some people who use
mobile phones?Signs of change in the tissues of the brain and head can be detected with modern scanning
equipment. In one case,a traveling salesman had to retire at a young age because of serious memory loss.He
couldn't remember even simple tasks.He would often forget the name of his own son.This man used to talk
on his mobile phone for about six hours a day,every day of his working week,for a couple of years. His family
doctor blamed his mobile phone use,but his employer's doctor didn't agree.
What is it that makes mobile phones potentially harmful?The answer is radiation.High-tech machines
can detect very small amounts of radiation from mobile phones.Mobile phone companies agree that there is
some radiation,but they say the amount is too small to worry about.
As the discussion about their safety continues,it appears that it's best to use mobile phones less often.
Use your regular phone if you want to talk for a long time.Use your mobile phone only when you really need
it. Mobile phones can be very useful and convenient,especially in emergencies.In the future,mobile phones
may have a warning label that says they are bad for your health.So for now,it's wise not to use your mobile
phone too often.On the safety issue of mobile phones,the manufacturing companies_________.
A:deny the existence of mobile phone radiation
B:hold that the amount of radiation is too small to worry about
C:try to prove that mobile phones are not harmful to health
D:develop new technology to reduce mobile phone radiation答案：B解析：由第一段第三句："cell phones are very popular”可知C项正确。由最后一段第四句 "very useful and convenient”可知B、D两项正确。故选A。
根据语境可知detect的意思是“发现，查明”。故选D。
由第三段可知那位销售员是因为严重的记忆问题而退休的，他连简单的任务都记不 住，故选C。
由第四段最后一句可知，移动公司承认手机有一些辐射，但他们认为辐射的量很小，无 需担心。
由文章最后一句可知，作者建议大家尽量少用手机。 第三篇 本篇文章主要讲述了如何处理脚踩扭伤的问题。 -
第5题：
According to the passage，which of the following statements is true？( )A.Britain has agreed to discuss the conditions of the exit before discussing the future trade ties.
B.EU might not be satisfied with May’s speech.
C.Theresa May has mapped out the blueprint of the relations between Britain and EU.
D.Britain is fully prepared to withdraw from EU in an orderly way.答案：B解析：
-
第6题：
单选题What is the speaker’s main topic?AEffects of using mobile phones on healthy human cells.
BRisks of developing cancer involved in the use of mobile phones.
CDamage to healthy cells caused by the use of mobile phones.
DThe potential health hazards of mobile phones on humans.
正确答案： B解析：
主旨题。该段录音首先指出科学家们担心手机的使用会影响人类的健康，因为研究表明手机辐射会加速癌细胞数量的增长。接着录音中提到虽然无法从研究结果得出辐射会对人类健康带来直接威胁的结论，但证明了一些科学家认为辐射会损害DNA并摧毁细胞修复系统的观点。录音最后描述了世界卫生组织和英国政府对手机使用持有戒备态度，敦促人们减少使用。由此可知，录音的主要内容是关于手机会给人类带来的潜在危险。因此选项D为正确答案。 -
第7题：
单选题Which of the following statements is true according to the passage?AEarthquake destruction is declining.
BEarthquake forecast is improving.
CMan is no longer fearful of earthquakes.
DMan is capable of conquering earthquakes.
正确答案： A解析：
A说地震造成的破坏在降低，与第一段的叙述相否；C说人们对地震不再感到恐惧，与最后一段的叙述相否；D说人们已经有能力征服地震，文章第三段第二句只说科学家对地震发生的时间和地点预测越来越准确，全文中也没提过人们可以征服地震。故B项“地震预测得到改进”正确。 -
第8题：
单选题According to the passage, atmospheric carbon dioxide performs all of the following functions EXCEPT: _____.Aabsorbing radiation at visible wavelengths
Babsorbing infrared radiation
Cabsorbing outgoing radiation from the Earth
Dhelping to retain heat near the Earth’s surface
正确答案： B解析：
文章第一段第二句指出，“these molecules allow radiation at visible wavelengths, where most of the energy of sunlight is concentrated, to pass through”，所以此处二氧化碳的作用是允许可见光波长的辐射穿过大气层，而不是将其“吸收”，因此A项不符合文章描述，符合题目要求；选项B、C在第二句的后半句有所体现，选项D在第一段的倒数第三句可以找到对应。 -
第9题：
单选题Which of the following statements is NOT true about mass communication?AIt can reach no further than human voice.
BIt can reach a large audience.
CIt is rapid and efficient.
DIt can be trusted.
正确答案： B解析：
最后一段指出思想传播的速度、距离和受众都发生了变化，大约200年前，人们所说的话并不能比其声音传播的更远，而非指的是mass communication（大众传媒）。 -
第10题：
单选题According to the passage, which of the following statements is true?ATransporting goods and people is the most important technology in the history of mankind.
BTechnology in transporting goods and people has changed human conditions more than anything else.
CTechnology in spreading information has changed human conditions more than transportation technology.
DTechnology in spreading information can’t change the economic development of society.
正确答案： A解析：
文章首段指出“没有任何科技革命像交通方面的科技革命那样显著地改变了人类的生活条件…然而长距离传送想法和信息的科技可以说带来了更多的改变…”，由此可知信息传播科技在改变生活条件方面比运输科技取得了更大的成就。故选项C符合文意。 -
第11题：
单选题Which of the following statements is true according to the passage?ABusinessmen absorbed in their career are narrow-minded.
BManagers often find it hard to tell right from wrong.
CPeople engaged in technical jobs lead a more rewarding life.
DCareer seeks should not focus on immediate interests only.
正确答案： A解析：
主旨题。文章前半部分主要谈及当前大学生在实利主义驱使下选择的专业大都与当前能挣钱的专业有关这一社会现实；文章后半部分阐述学习知识重在学习什么，解决什么问题。作者认为，人类文明知识浩瀚，但重要的是要学会怎样思考，学习看清事物之间的联系，不仅要学习专业知识，而且要扩大教育视野，培养人的道德品质，尤其注重从长远的而不是从短期的利益上来看问题。这与D项正吻合。 -
第12题：
单选题According to the passage, which of the following statements is TRUE?AAll the universities have banned the sale ofbottled water.
BPlastic bottles may do harm to people's health.
CThe purchase of soft drinks will increase.
DBottled water is cheap and environment-friendly.
正确答案： B解析： -
第13题：
共用题干
Mobile Phones
Mobile phones should carry a label if they proved to be a dangerous source of radiation,according to Robert Bell,a scientist.And no more mobile phone transmitter towers should be built until the long-term health effects of the electromagnetic radiation they emit are scientifically evaluated,he said."Nobody is going to drop dead overnight but we should be asking for more scientific information,"Robert Bell said at a conference on the health effects of low-level radiation.______(46)
A report widely circulated among the public says that up to now scientists do not really know enough to guarantee there are no ill-effects on humans from electromagnetic radiation.According to Robert Bell,there are 3.3 million mobile phones in Australia alone and they are increasing by 2,000 a day.______(47)
As well,there are 2,000 transmitter towers around Australia,many in high density residential areas.______(48)The electromagnetic radiation emitted from these towers may have already produced some harmful effects on the health of the residents nearby.
Robber Bell suggests that until more research is completed the government should ban construction of phone towers from within a 500 meter radius of school grounds,child care centers,hospitals, sports playing fields and residential areas with a high percentage of children.______(49)He adds that there is also evidence that if cancer sufferers are subjected to electromagnetic waves the growth rate of the disease accelerates.
______(50)According to Robert Bell,it is reasonable for the major telephone companies to fund it. Besides,he also urges the government to set up a wide-ranging inquiry into possible health effects.________（49）
A:He says there is emerging evidence that children absorb low-level radiation at a rate more than three times that of adults.
B:By the year 2000 it is estimated that Australia will have 8 million mobile phones;nearly one for every two people.
C:"If mobile phones are found to be dangerous,they should carry a warning label until proper shields can be devised,"he said.
D:Then who finances the research?
E:For example,Telstra,Optus and Vodaphone build their towers where it is geographically suitable to them and disregard the need of the community.
F: The conclusion is that mobile phones bring more harm than benefit.答案：A解析：本题考查的是对上下文之间意义关系的理解和对文章细节的把握。本题应该填与low-level radiation有关的内容。所以选项C是正确的。
本题考查的是对上下文之间意义关系的理解。此空前面一句介绍了澳大利亚拥有手机的现状，选项B的内容是对到2000年之前手机发展前景的预测，内容连贯。因此选B。
本题考查的是对上下文之间意义关系的理解。本题考查的是对上下文之间意义关系的理解和对文章细节的把握。这一段第一句说“许多微波发射塔建在人口稠密的居民区”。选项E的内容涉及微波发射塔的地点选择只考虑到地理位置而不顾及社区居民的安全。选项E扩展了第一句表达的信息。此外，选项E出现tower这个词，与第一句的tower 相呼应，也证明了选择的合理性。因此选E。
本题考查的是对上下文之间意义关系的理解。此空前一句说的是Robert Bell建议政府应该禁止在儿童比例高的地区（如学校操场、儿童医疗中心、居住小区等）的500 米半径范围内建造发射塔。选项A说明为什么要这样做，因此选A。
本题考查的是对上下文之间意义关系的理解和对文章细节的把握。此空后面一句说主要的电话公司出钱资助研究项目的问题，因此选项D是正确答案。 -
第14题：
共用题干
第二篇
Cell Phones : Hang Up or Keep Talking?
Millions of people are using cell phones today.In many places it is actually considered unusual not to
use one.In many countries,cell phones are very popular with young people.They find that the phones are
more than a means of communication一having a mobile phone shows that they are cool and connected.
The explosions around the world in mobile phone use make some health professionals worried.Some
doctors are concerned that in the future many people may suffer health problems from the use of mobile
phones.In England,there has been a serious debate about this issue. Mobile phone companies are worried about
the negative publicity of such ideas.They say that there is no proof that mobile phones are bad for your health.
On the other hand,why do some medical studies show changes in the brain cells of some people who use
mobile phones?Signs of change in the tissues of the brain and head can be detected with modern scanning
equipment. In one case,a traveling salesman had to retire at a young age because of serious memory loss.He
couldn't remember even simple tasks.He would often forget the name of his own son.This man used to talk
on his mobile phone for about six hours a day,every day of his working week,for a couple of years. His family
doctor blamed his mobile phone use,but his employer's doctor didn't agree.
What is it that makes mobile phones potentially harmful?The answer is radiation.High-tech machines
can detect very small amounts of radiation from mobile phones.Mobile phone companies agree that there is
some radiation,but they say the amount is too small to worry about.
As the discussion about their safety continues,it appears that it's best to use mobile phones less often.
Use your regular phone if you want to talk for a long time.Use your mobile phone only when you really need
it. Mobile phones can be very useful and convenient,especially in emergencies.In the future,mobile phones
may have a warning label that says they are bad for your health.So for now,it's wise not to use your mobile
phone too often.The word"detected"in Paragraph 3 could be best replaced by_________.
A:cured
B:removed
C:discovered
D:caused答案：C解析：由第一段第三句“cell phones are very popular”可知A项正确。由最后一段第四句“very useful and convenient”可知，B、D两项正确。故选C。
根据语境可知detect的意思是“发现，查明”。故选C。
由第三段可知那位销售员是因为严重的记忆问题而退休的，他连简单的任务都记不 住，故选D。
由第四段最后一句可知，移动公司承认手机有一些辐射，但他们认为辐射的量很小，无 需担心。
由文章最后一句可知，作者建议大家尽量少使用手机。 第三篇 本篇文章讲述了对杭微生物的杭力应引起注意。 -
第15题：
共用题干
第三篇
Cell Phones : Hang Up or Keep Talking?
Millions of people are using cell phones today.In many places it is actually considered unusual not to
use one.In many countries,cell phones are very popular with young people.They find that the phones are
more than a means of communication一having a mobile phone shows that they are cool and connected.
The explosions around the world in mobile phone use make some health professionals worried.Some
doctors are concerned that in the future many people may suffer health problems from the use of mobile
phones.In England,there has been a serious debate about this issue.Mobile phone companies are worried
about the negative publicity of such ideas.They say that there is no proof that mobile phones are bad for your
health.
On the other hand,why do some medical studies show changes in the brain cells of some people who use
mobile phones?Signs of change in the tissues of the brain and head can be detected with modern scanning
（扫描）equipment. In one case , a traveling salesman had to retire at a young age because of serious memory
Loss.He couldn't remember even simple tasks.He would often forget the name of his own son.This man used
to talk on his mobile phone for about six hours a day,every day of his working week,for a couple of years.
His family doctor blamed his mobile phone use,but his employer's doctor didn't agree.
What is it that makes mobile phones potentially harmful?The answer is radiation.High-tech machines
can detect very small amounts of radiation from mobile phones.Mobile phone companies agree that there is
some radiation,but they say the amount is too small to worry about.
As the discussion about their safety continues,it appears that it's best to use mobile phones less often.
Use your regular phone if you want to talk for a long time.Use your mobile phone only when you really need
it.Mobile phones can be very useful and convenient,especially in emergencies.In the future,mobile phones
may have a warning label that says they are bad for your health.So for now,it's wise not to use your mobile
phone too often.On the safety issue of mobile phones,the manufacturing companies__________.
A:deny the existence of mobile phone radiation
B:develop new technology to reduce mobile phone radiation
C:hold that the amount of radiation is too small to worry about
D:try to prove that mobile phones are not harmful to health答案：C解析：由第一段可知，人们买手机是因为它流行，从最后一段第四句可知，买手机是因为它方 便又实用。
detect意思为“发现，找到”, discover的意思与之一样。
由第三段的第三、四句话可知，这个商人很年轻就退休是因为他丧失了记忆力，连简单 的任务都记不住了。
由第四段的最后一句话可知，手机公司认为手机的辐射很小，不足以对人们的健康造 成伤害。
由最后一段第一句话可知，作者的写作目的是劝我们最好少用手机。 -
第16题：
共用题干
第一篇
Cell Phones: Hang Up or Keep Talking?
Millions of people are using cell phones today,In many places it is actually considered unusual not to
use one.In many countries,cell phones are very popular with Young people.They find that the phones are
more than a means of communication一having a mobile phone shows that they are cool and connected.
The explosions around the world in mobile phone use make some health professionals worried.Some
doctors are concerned that in the future many people may suffer health problems from the use of mobile
phones.In England,there has been a serious debate about this issue.Mobile phone companies are worried about
the negative publicity of such ideas.They say that there is no proof that mobile phones are bad for your health.
On the other hand,why do some medical studies show changes in the brain cells of some people who use
mobile phones?Signs of change in the tissues of the brain and head can be detected with modern scanning
（扫描）equipment. In one case , a traveling salesman had to retire at a young age because of serious memory
loss.He couldn't remember even simple tasks.He would often forget the name of his own son.This man used
to talk on his mobile phone for about six hours a day,every day of his working week,for a couple of years.
His family doctor blamed his mobile phone use,but his employer's doctor didn't agree.
What is it that makes mobile phones potentially harmful?The answer is radiation.High-tech machines
can detect very small amounts of radiation from mobile phones.Mobile phone companies agree that there is
some radiation,but they say the amount is too small to worry about.
As the discussion about their safety continues,it appears that it's best to use mobile phones less often.
Use your regular phone if you want to talk for a long time.Use your mnobile phone only when you really need
it.Mobile phones can be very useful and convenient,especially in emergencies.In the future,mobile phones
may have a warning label that says they are bad for your health.So for now,it's wise not to use your mobile
phone too often.On the safety issue of mobile phones,the manufacturing companies___________.
A:deny the existence of mobile phone radiation
B:develop new technology to reduce mobile phone radiation
C:try to prove that mobile phones are not harmful to health
D:hold that the amount of radiation is too small to worry about答案：D解析：由第一段第三句“cell phones are very popular”可知A项正确。由最后一段第四句“very useful and convenient”可知C、D两项正确。故选B。
根据语境可知，detect的意思是“发现，查明”。故选C。
由第三段可知，那位销售员是因为严重的记忆间题而退休的，他连简单的任务都记不 住，故选B。
由第四段最后一句可知，移动公司承认手机有一些辐射，但他们认为辐射的量很小，无 需担心。
由文章最后一句可知，作者建议大家尽量少使用手机。 第二篇 本篇文章主要讲述了新一代孩子所存在的问题，及父母应该怎样面对这些问题。 -
第17题：
单选题Which of the following statements can NOT justify the high price that Toshiba pays in the current deal, according to the passage?APressure from other powerful rivals.
BProspects of development in the future.
CEnvisioned potential profits.
DThe high intrinsic value of the purchased corporation.
正确答案： B解析：
事实细节的找寻和判断。录音中提到东芝公司总裁对购买价格的看法是“…while the price might seem quite high, Toshiba had a lot of competition for the company and that the future growth and profit potential of the business made it the correct price”，可知虽然购买价格过于昂贵，但该公司面临大量的竞争，并且未来的发展和利润潜力也证实了这桩买卖还是合算的。分别对应选项A、B和C，而唯独没有提到选项D（被购买公司的巨大固有价值）的内容。 -
第18题：
单选题Which of the following statements is true according to the passage?AUnlike Francisco Goya, Pablo Picasso and several Mexican artists expressed their political opinions in their paintings.
BHistory books often reveal the compilers’ political views.
CReligious art remained in Europe for centuries the only type of art because most people regarded the Bible as the Holy Book.
DIn the Middle East even today you can hardly find any human and animal figures on palaces or other buildings.
正确答案： D解析：
艺术表达的是情感和见解，历史记载的是一个国家的政治生活和事实，故A，B不符合题意。文章最后一段第二句讲，在欧洲数百年来，宗教艺术几乎是唯一存在的艺术形式。但是C项缺乏限定词“几乎”，故可排除。D为正确答案，其依据在最后一段倒数第二句。 -
第19题：
单选题Which of the following is NOT TRUE according to the passage?AWe will be in trouble if our fat cells become less responsive to insulin.
BMore and more studies are done to study the link between sleep and weight.
CMore than 20％ of Americans are not getting enough sleep.
DFat cells are there to help us maintain a good health.
正确答案： D解析：
细节判断题。考查对文章细节的理解。根据文章最后一段第一句话“Bad things can happen when fat cells become less responsive to insulin.”可以得知：当脂肪细胞对胰岛素的反应能力降低时，不好的事情就可能发生。所以A项表述正确。根据文章第二段最后一句话“More than 1 in 5 of us…”可知：超过20％的美国人睡眠不足，因此C项表述正确。根据文章最后一段第二句“Fat cells are actually your friend… They’re there to store lipids”可知：脂肪细胞可以帮助身体保持健康，因此D选项表述正确。B项原文未提及，故选择B项。 -
第20题：
单选题According to the passage, which of the following statements is NOT TRUE?AThis pipeline will cross four states.
BThis pipeline is l,172 miles long.
CAll the protesters are from the Standing Rock Sioux. D Neither side of the dispute is willing to compromise.
正确答案： C解析： -
第21题：
单选题According to the passage, which of the following did NOT happen in the room where the college entrance exam was going on?AThe teachers in the exam hall tried to stop the police from entering into the room.
BSome examinees sent answers with mobile phones to people outside the room to make profits.
CThe mobile phones were confiscated by the police.
DSome examinees forwarded answers to people who have paid a lot of money.
正确答案： A解析：
语义的理解和判断。该段录音与一次考试作弊案相关，开头便指出警察试图进入学生参加大学入学考试的大厅，但是“They were blocked by teachers but later confiscated mobile phones…”，由此可知，虽然教师们不让警察进入考试大厅，但后来警察们还是没收了被用于考试作弊的手机，因此选项A、C均与录音原文相符。接着录音中指出考场里最聪明的学生将答案做出后，发给younger students outside the hall（考场外年纪小一点的学生）手中，然后这些学生再将答案转发给已付过钱的人，由此可见，B项内容也与录音原文相符。但D项所描述的（一些考生将答案转发给已付过钱的人）与录音中提到的“发给考场外年纪小一点的学生”不符。
【录音原文】
Acting on a tip off—the police tried to raid a hall where students were taking the college entrance exam last month. They were blocked by teachers but later confiscated mobile phones that had been smuggled into the room—and uncovered what they said was an elaborate cheating system. The brightest students known as “players” finished their multiple choice papers quickly then sent off the answers by text message to younger students outside the hall. They forwarded the information to others who paid up to 1, 000 dollars to take part. -
第22题：
单选题Which of the following is TRUE according to the passage?AYou should limit your mobile phone calls to personal affairs.
BYou should speak quietly into your phone while in a church.
CYou are supposed to turn off your mobile phone at a funeral.
DYou are supposed to use your mobile phones as much as possible.
正确答案： D解析：
推理题。第四段提到“worse more, how would you feel if a mobile phone rang suddenly during a funeral!”，更糟糕的是当你在参加一个才葬礼时突然有电话想你会有什么感觉？暗含着在葬礼这种非常严肃的场合我们都不愿意听到电话响，同时也暗含着我们让手机关机，C项同义转述。A项违背事实，不可能把手机限制于谈论私事。在教堂里打电话有所限制要三思，并没有说小声打，B项错误。D项“尽可能的使用手机”在文中并没有提及。 -
第23题：
单选题According to the passage, which of the following statements is TRUE?AChokwe developed the app all by himself.
BPeople can buy t is app from the online store.
CHis mother's car was once damaged over a pothole.
DThe app works by using the city's 911 call system.
正确答案： C解析：