题目内容

14.Why is it so difficult to fall asleep when you are overtired?There is no one answer that applies to every individual.But many people fail to note the difference between fatigue,physical tiredness and sleepiness,the inability to stay awake.It's possible to feel"tired"physically and still be unable to fall asleep,because while your body may be exhausted,you don't feel sleepy.To fall asleep,you need enough time to relax,even if you feel fatigued.It's not so easy to simply"turn off".According to Carl E.Hunt,director of the National Center on Sleep Disorders Research in Bethesda,Maryland,most people do not allow themselves relaxed.
Lack of sleep complicates matters even more.Experts say adults need at least 7 to 8 hours of sleep a night to function properly.When you get less sleep than that on consecutive (连续) nights,you begin to be burdened by"sleep debt".As sleep debt increases (and functionality decreases),your body experiences a stress response and begins to release adrenaline (肾上腺素).Now a bad cycle has been created:You experience the feeling of being more and more tired,but your body is increasingly stimulated."Power sleeping"for more hours on weekends is only a temporary solution."There is no substitute for getting a good night's sleep on a regular basis,"says Hunt.
Most of us,however,don't get the sleep we need.According to the 2002 National Sleep Foundation,Americans sleep an average of 6.9 hours per night during the week,and 58 percent of adults experience sleeplessness a few nights a week or more.

33.The writer intends to tell usD.
A.Americans don't get enough sleep
B.what benefits we can get from enough sleep   
C.lack of sleep has a bad effect on our body  
D.why it's difficult for overtired people to fall asleep  
34.Which of the following is NOT caused by lack of sleep?C
A.Power sleeping.                        
B.Sleep debt.
C.Lack of adrenaline.                    
D.Function badly.
35.From the passage we can draw a conclusion that lack of sleepD.
A.is so common that it isn't worth paying attention to
B.doesn't matter for it can be solved by"Power sleeping
C.can make it easy to fall asleep when one is overtired
D.may make it difficult to fall asleep when one is overtired.

分析 本文属于说明文阅读,作者通过这篇文章主要向我们描述了为何你劳累过度却又如此难以入睡的原因,大多数人都没有给自己充分的舒缓时间,长期的睡眠不足紊乱了身体机能,容易导致疲惫时难以入睡,因此我们一定要养成每晚有规律的安睡的习惯.

解答 33.D.推理判断题.根据文章第一段"Why is it so difficult to fall asleep when you are overtired?There is no one answer that applies to every individual",可知作者的主要目的是告诉我们为何极度疲惫的人难以入睡的原因;故选D.
34.C.细节理解题.根据文章第二段"you begin to be burdened by"sleep debt".As sleep debt increases (and functionality decreases),your body experiences a stress response and begins to release adrenaline (肾上腺素)""Power sleeping"for more hours on weekends is only a temporary solution",可知睡眠不足会导致睡眠债,肾上腺素增多,长睡不醒等,故选C.
35.D.推理判断题.根据最后一段"Americans sleep an average of 6.9 hours per night during the week,and 58 percent of adults experience sleeplessness a few nights a week or more",可推测睡眠不足有可能导致失眠现象;故选D.

点评 考察学生的细节理解和推理判断能力,做细节理解题时一定要找到文章中的原句,和题干进行比较,再做出正确的选择.在做推理判断题不要以个人的主观想象代替文章的事实,要根据文章事实进行合乎逻辑的推理判断.

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13.Air pollution is a leading cause of cancer and classified among Group 1,or top,human carcinogens (致癌物质),said the International Agency for Research on Cancer (IARC),which is the World Health Organization's (WHO) cancer agency,on Oct 17,2013.
The most widely used system for classifying carcinogens comes from the IARC,which places them into five groups.Group 1carcinogens definitely cause cancer in humans.Group 2A is probably carcinogenic to humans,Group 2B is possibly carcinogenic,the carcinogenicity of Group 3in humans is unclassifiable,and Group 4is probably not carcinogenic to humans.Only a little more than 100are classified as Group 1cancer-causing substances,including ultraviolet radiation and tobacco smoke.
"Our task was to evaluate the air everyone breathes rather than focus on specific air pollutants,"the lARC's Dana Loomis said in a statement."The results from the reviewed studies point in the same direction:the risk of developing lung cancer is significantly increased in people exposed to air pollution."
In 2010,lung cancer resulting from air pollution killed 223,000people worldwide,and there was also convincing evidence that it increases the risk of bladder (膀腕) cancer,according to the IARC.
Air pollution is already known to raise risks for a wide range of illnesses,including respiratory and heart diseases.
Air pollution is global,although the levels of it vary over space and time.
Loomis said people in Asia,eastern North America,some places in Central America and Mexico,as well as North Africa have relatively high exposure.Developing countries with large populations and booming manufacturing sectors,such as China,are particularly at risk.
Many cities in China,such as Beijing,frequently see smog.This week,Harbin,the capital city of Heilongjiang province,became the first Chinese city to officially suspend classes due to serious smog
Many developed countries face similar problems,although to a lesser degree than most developing nations.In Europe,levels of many pollutants have fallen.But between 91and 96percent of Europeans living in cities are exposed to levels of PM2.5-tiny particles with a diameter of less than 2.5micrometers-that are higher than the WHO safety limits,says a report published by the European Environment Agency on Oct 15.
Although both the composition and levels of air pollution can vary dramatically from one location to the other,the 1ARC said its conclusions apply to all regions of the world.
"Given the scale of the exposure affecting people worldwide,this report should send a strong signal to the international community to take action without further delay,"said Christopher Wild,director of the IARC.

59.What might be the best title of the passage?C
A.Signals of air pollution
B.Safety limits of air pollution
C.Air pollution,cancer risk
D.Air pollution,smog risk
60.What's the main task of IARC?B
A.To focus on cancer-causing substances.
B.To evaluate the air quality.
C.To study the developing risk of cancer.
D.To send signals to the international community.
61.Why should the international community take action without further delay?D
A.The composition and levels of air pollution vary from place to place.
B.More and more people in developing countries are exposed to air pollution.
C.Developed countries face air pollution,the level of which is higher than the safety limits.
D.A large number of people worldwide are exposed to air pollution.
16.Why are people interested in eating raw foods or whole foods?One reason is that eating these types of food reduces the risk of acid accumulation in your body.
Raw and whole foods are usually digested more efficiently than cooked and refined foods.When we cook foods,we destroy the natural enzymes(酶)that are part of the food in its raw form.These enzymes were intended by nature to help us digest the food.When we consume food without these natural enzymes,our bodies either digest the food improperly or allow too many nutrients to be absorbed into the bloodstream.In both instances,the result is obesity.When too many nutrients are absorbed at once,the body grows fat.Improperly digested food moves slowly through the digestive tract,where it becomes increasingly acidic (酸性的).To protect its vital organs from this acidic waste,the body changes the acid into fat and stores it safely away from the organs.
Processed foods contain chemical elements,which might confuse the appetite mechanism that tells us when we've had enough to eat; as a result,people often overeat.Processed foods also upset the digestive cycle.The body will either identify these foods as allergens and then store them safely away from the organs as fat,or the remains of undigested food will become acidic and enter the bloodstream as acid waste,which will stick to the blood vessel walls and block the passage of vital oxygen and nutrients heading for the body's cells.The body's metabolism(新陈代谢) becomes inactive,and the result is weight gain and obesity.
The accumulation of acid in the digestive tract makes digestion increasingly inefficient.When that happens,even healthy foods can become acidic and the food allergies will become more common.
To stop this vicious(恶性的) circle in its tracks,people need to consume food and supplements that will neutralize (使…中和)the acid already accumulated in body.Eating the right types of raw and whole foods can help.It's also important to restore your enzyme balance.You need to identify and avoid the foods that cause acid accumulation and consume the foods that increase enzyme production.If you truly want to change and help your body heal itself,you need to take an active approach.-Raw and whole foods can be your choice.

31.What is the main purpose of this passage?A
A.To advocate eating more raw and whole foods.
B.To tell the differences between raw and processed foods.
C.To inform people of the harm of processed foods.
D.To warn people of the problem of obesity.
32.It can be inferred from Para.2thatB.
A.it is essential for people to protect their vital organs
B.foods with natural enzymes help people keep fit
C.we'd better be cautious about raw and whole foods
D.giving up cooked and refined foods is a new lifestyle
33.Processed foods are unhealthy because theyC.
A.destroy body's cells
B.are difficult to digest
C.may lead to obesity
D.stop body's metabolism
34.What is likely to be talked about following the last paragraph?D
A.Active approaches to avoid acid.
B.Different causes of acid accumulation.
C.Correct ways to cook raw foods.
D.Suitable types of raw and whole foods.
35.What can we learn from the text?B
A.Processed foods are good for our appetite mechanism.
B.Eating the right types of raw and whole foods does good to our body.
C.The accumulation of acid in the digestive tract makes digestion more effective.
D.Processed foods also comfort the digestive tract.
2.More than a third of the babies born this year could receive a 100th birthday message from whoever happens to be on the throne in the second decade of the 22nd century,according to figures published by the Office for National Statistics (ONS).It forecasts that 35% of the 826,000people born in 2012will live to become centenarians.
But a long life is not unalloyed good news.David Sinclair,head of policy and research at the International Longevity Centre UK,warned that for many the future may mean social isolation(隔离)as they live longer than friends and members of their families.
"It is of course good news that so many more people are living longer,"he said,"but there is a big'but1.We will be older,but in worse health,and at high risk of living alone.The other problem is that we are very poor at forward planning.We deal with the problems that are under our noses,but even problems two or three years away seem quite distant enough to put off.When you're talking about forecasts for a time half a century away and more,I see no evidence that we are putting in place the measures to deal with it."
This year there will be 14,500centenarians in the UK,a number which is expected to increase to 110,000in 2035.
Women have higher life expectancies than men at every age:the likelihood of a girl born this year reaching her century is estimated to be 39%; for boys the figure is 32%.
The estimated number of female centenarians has risen from 500in 1961to more than 10,000in 2010,a figure which is projected to reach 71,000by 2035and 276,000by 2060.
Men are also living far longer,although their numbers are far fewer.There were an estimated 92male centenarians in 1961and just below 2,000in 2010.

35.The under lined word centenarians probably means people whoD.
A.are born this year
B.live longer than their friends
C.are in poor health
D.are a hundred or more years old
36.From what David Sinclair said,we can learnB.
A.he doesn't believe so many people are living longer
B.the older we are,the more likely we are to live alone and in poor health
C.the people who are good at forward planning are likely to live longer
D.too distant planning is not always necessary for most of us
37.Which of the following statement is true?A
A.About 289,100people born in 2012will live to 100.
B.More men will reach their century than women in the future.
C.The number of the female centenarians was 1,000in 1970s
D.More than 600people reached their century in 1961.
38.What does this passage mainly talk about?C
A.A long life is not always good news.
B.A long life also means social and physical isolation
C.In the future,more people will live to 100in the UK.
D.It is good to live to 100.
19.Leaders of the World Health Organization say they are concerned about the air quality and health efiects on citizens during a recent outbreak of heavy pollution in Beijing.Still,they said they were unsure of the exact amount the air pollution takes on any person's body,casting doubts on local reports tying the area's dirty air to particular cases of illness.
   Speaking at a briefing(情况介绍会)on Tuesday,the WHO's Western Pacific regional director,Shin Young-Soo,cited(列举)reports about poor air quality causing lung cancer in recent weeks.
"The WHO is skeptical of the information,"she said."We're cautious of whether the illness is related to air po11ution.We know it has an impact on health,but we don't know how much."
    The officials didn't cite particular reports.The comments follow a number of articles since late last year connecting some cases of diseases like lung cancer with pollution,.including one in November regarding an 8-year-old girl.
   The health impact of Beijing's gray skies has been on the minds of many over the past week.Local authorities on Tuesday preserved an orange alert(警报)一the city's second highest pollution-warning level-and again warned people to stay indoors.Experts widely agree that small particulates(颗粒) known as PM2.5 carry significant short-and long-term health risks,particularly with children.Other studies find a certain link between pollution and shorter life spans.
Chinese state media have noted a rise in cancer levels in Beijing,without specifying(具体说明)whether the new cases are the main result of pollution,smoking,other sources or some combination.
Bernhard Schwartlander,the organization's China chief,said he is concerned and has been in contact with national authorities."There is no easy solution,"Dr.Schwartlainder said,adding that solving the problem requires managing industry and the economy.WHO leaders advised citizens.to stay indoors and limit exposure to the harmful particulates.When asked if wearing a face mask has any proven efficacy in preventing health effects of air pollution,Dr.Schwartlainder said,"Whatever you do,it's better than nothing."

68.We can learn from the passage thatA.
A.in case of an orange alert,we had better not go outside
B.the case of the girl with lung cancer was little'linked to air pollution
C.cancer levels in Beijing are rising due to heavy air pollution
D.it is widely agreed that pollution shortens life spans very slightly
69.According to Dr.Schwartlander,the ways to solve the problem includeC.
A.contacting the national authorities     
B.being exposed less to harmful particulates
C.managing the enterprise and economy  
D.preventing health effects of pollution
70.What would be the best title of this passage?D
A.The dangers of heavy pollution
B.The impacts of pollution on health
C.The importance of protecting the environment
D.The uncertainty of relationship between pollution and health.
6.It was reported last week that developers could take photos from Apple mobile and Google Android devices without the phone owners knowing that the images were being taken.In Apple's case,developers can also obtain the location information for each photo.
Senator(参议员) Charles Schumer said in a telephone interview that his office had spoken with officials at both Apple and Google on Monday.
"We asked them if they could find a way on their own to prevent Apple from having access to private info,"Mr.Schumer said."They were friendly and open to the idea that this ought to be changed."
On Sunday,Mr.Schumer said that he planned to send a letter to the Federal Trade Commission(联邦贸易委员会) asking the agency to investigate Apple and Google after the privacy concerns came to light.Claudia Bourne Farrell,an F.T.C.spokeswoman,said the agency had received the letter but she could not comment further.
"It sends shivers up the spine to think that one's personal photos,address book,and who knows what else can be obtained and even posted online without consent,"Mr.Schumer wrote in his letter to the F.T.C."If the technology exists to open the door to this kind of privacy invasion,then surely technology exists to close it,and that's exactly what must happen."
Mr.Schumer said if Apple and Google could not come to an agreement to fix the problem,then he would be forced to take the issue further.
He said other companies had been willing to work with his office to fix issues."I'm optimistic that we can get this changed without any regulation,"he said."If it's not changed,then we'll look the F.T.C.,and if that doesn't work then we'll look at legislative approach."
The F.T.C.has warned companies to try to be more vigilant(警醒的) in their efforts to protect consumers when it comes to privacy.
 
36.The senators spoke with officials at both Apple and GoogleC
A.to discuss whether it is illegal to have access to private information.
B.to stop them from developing the technology of taking photos.
C.to urge them not to invade consumers'privacy.
D.to keep them from obtaining the location information for each photo.
37.Which of the following statements is true?D
A.Privacy invasion from Apple has existed for a long time.
B.Privacy invasion from Google has existed for a long time.
C.Apple and Google have decided to make a change.
D.Mr.Schumer takes the privacy concerns caused by Apple and Google seriously.
38.Mr.Schumer's letter to the F.T.C.mainly shows that the technology to open the door to privacy invasionA
A.causes people to worry about the safety of their personal information.
B.can be used if permitted.
C.causes personal information to be posted online without permission.
D.causes privacy invasion to happen frequently.
39.If the privacy concerns can't be solved with the help of the F.T.C.C.
A.The companies will be fined.
B.The companies will be closed.
C.The senators will turn to legislation.
D.The senators will force the companies not to invade privacy.
40.Where can we read about the passage?B
A.In a science report.    B.In a newspaper.
C.In a magazine            D.In a textbook.
3.subways
The Tokyo Metro and Toei LinesFeatures:The Tokyo Metro and Toei lines that make up of Tokyo's huge subway system carry almost 8 million people each day,making it the busiest system in the world.The system is famous for its oshiya-literally,"pusher"-who push passengers into crowded subway cars so the doors can close.And you think your ride is hell.
The Moscow MetroFeatures:The Moscow Metro has some of the most beautiful stations in the world.The best of them were built during the Stalinist era and feature chandeliers(枝行吊灯),marble moldings and elaborate murals(精美壁画).With more than 7 million riders a day,keeping all that marble clean has got to be a burden.
The Hong Kong MTRFeatures:The Hong Kong MTR has the distinction of being one of the few subway systems in the world that actually turns a profit.It's privately owned and uses real estate development along its tracks to increase income and ridership.It also introduced"Octopus cards"that allow people to not only pay their fares electronically,but buy stuff at convenience stores,supermarkets,restaurants and even parking meters.It's estimated that 95% of all adults in Hong Kong own an Octopus card.
Shanghai MetroFeatures:Shanghai is the third city in China to build a metro system,and it has become the country's largest in the 12 years since it opened.Shanghai Metro has 142 miles of track and plans to add another 180 miles within five years.By that point,it would be three times larger than Chicago"L".The system carries about 2.18 million people a day.
The London MetroFeatures:Londoners call their subway the Underground,even though 55 percent of it lies above ground.No matter when you've got the oldest mass-transit system in the world,you can call it anything you like.Trains started in 1863 and they've been running ever since.Some 3 million people ride each day,every one of them remembering to"Mind the gap"
56.Which one can provide the riders with some wonderful decorations at the stations?B
A.The Tokyo Metro and Toei Lines             B.The Moscow Metro
C.The London Metro                           D.The Hong Kong MTR
57.Dis done with the purpose of making money.
A.The Tokyo Metro and Toei Lines               
B.The Moscow Metro
C.Shanghai Metro                    
D.The Hong Kong MTR
58.We can learn from the passage that Shanghai MetroC.
A.carries the most people each day
B.is the world's largest
C.may be larger than the Chicago"L"in the future
D.is the busiest in the world
59.How many subways carry more than 5 million people per day?A
A.2            B.3            C.4             D.5
60.What can be inferred from the passage?B
A.Shanghai is the third to build a metro system in China,which has become the largest in the world.
B.You'll feel sick when you travel on the Tokyo Metro and Toei Lines.
C.Londoners call their subway the Underground because 55 percent of it lies above ground.
D.It is estimated that 95% of the population in Hong Kong own an Octopus card.

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