【2011·黑龍江哈六中第二次模擬】C

Researchers in London and Bristol have found that men are particularly likely to yield to depression if their partners are also depressed.

   The findings highlights the importance of paying attention to the partners of depressed mothers as young children themselves are vulnerable to social problems if both parents are depressed.

   Researchers in London and at the university of Bristol launched their study to investigate whether family structure affects the likelihood of depression in men around the time their child is born. They looked at men from traditional families, men with children from a previous relationship, men whose parents had children by a former partner , and men who were not living with their partners.

   All 7,018 participants filled out a questionnaire on depression, and answered the questions about their age, education level and employment status. Details about the quality of their relationship with their partners, networks of friends and previous life events were also recorded.

About 3.5 percent of the men and 13 percent of their partners suffered depression around the time their child was born. In comparison, men in step—families or who were not living with their partners were twice as likely to get depressed as those in traditional families. This could be explained by other factors that are more common in non—traditional families, such as poor education and relationship conflicts.

Even allowing for all these factors, however, the partners of women who were suffering from perinata (圍產(chǎn)期的) depression were significantly more likely to become depressed themselves, the researchers report in an American Journal. Ten percent of women who were depressed had depressed partners. For the healthy women, the figure was only 2.6 percent. Previous research suggests that families with two depressed partners may need special attention. A researcher in Atlanta has found that primary school children with two troubled parents have difficulty relating to their peers. “It’s extremely important to look at the whole family ,” she says.

64. What can we conclude from paragraph 1 and 2 ?

A. Men often mistreat their children

B. Depressed women often have depressed partners

C. All young children are vulnerable to social problems

D. Women with children often have depressed partners

65. Researchers in London and Bristol carry out such an investigation in order to          .

A. see what kind of family environment is ideal for children to grow up in

B. investigate why so many men get depressed when a child is born

C. study whether family structure affects depression in men when child is born

D. see whether it is true that behind every depressed man there is a depressed woman

66. what kind of man is least likely to get depressed when their child is born ?

A. Men in step––families

B. Men in traditional families

C. Men not living with their partners

D. Men in non—traditional families

【2011·遼寧錦州市質(zhì)檢二】D

Malaria, the world’s most widespread parasitic (寄生蟲引起的)disease, kills as many as three million people every year—almost all of whom are under five, very poor, and African. In most years, more than five hundred million cases of illness result from the disease, although exact numbers are difficult to assess because many people don't (or can’t) seek care. It is not unusual for a family earning less than two hundred dollars a year to spend a quarter of its income on malaria treatment, and what they often get no longer works. In countries like Tanzania, Mozambique, and the Gambia, no family, village, hospital, or workplace can remain unaffected for long.        

Malaria starts suddenly, with violent chills, which are soon followed by an intense fever and, often, headaches. As the parasites multiply, they take over the entire body. Malaria parasites live by eating the red blood cells they infect. They can also attach themselves to blood vessels in the brain. If it doesn’t kill you, malaria can happen again and again for years. The disease is passed on to humans by female mosquitoes infected with one of four species of a parasite. Together, the mosquito and the parasite are the most deadly couple in the history of the earth and one of the most successful. Malaria has five thousand genes, and its ability to change rapidly to defend itself and resist new drugs has made it nearly impossible to control. Studies show that mosquitoes are passing on the virus more frequently, and there are more outbreaks in cities with large populations. Some of the disease's spread is due to global warming.

For decades, the first-choice treatment for malaria parasites in Africa has been chloroquine, a chemical which is very cheap and easy to make. Unfortunately, in most parts of the world, malaria parasites have become resistant to it. Successful alternatives that help prevent resistance are already available, but they have been in short supply and are very expensive. If these drugs should fail, nobody knows what would come next.   

67. According to paragraph 1, many people don’t seek care because ________.

A. they are too poor                                       

B. it is unusual to seek care

C. they can remain unaffected for long

D. there are too many people suffering from the disease

68. People suffering from malaria ________.

A. have to kill female mosquitoes                     B. have ability to defend parasites

C. have their red blood cells infected                D. have sudden fever, followed by chills

69. Which of the following may be the reason for the wide spread of the disease?

A. Its resistance to global warming.                 

B. Its ability to pass on the virus frequently.

C. Its outbreaks in cities with large populations.

D. Its ability to defend itself and resist new drugs.

70. It can be inferred from the passage that ________.

A. no drugs have been found to treat the disease

B. the alternative treatment is not easily available to most people

C. malaria has developed its ability to resist parasites

D. nobody knows what will be the drug to treat the disease

【2011·江蘇南通市第二次模擬】

A study now lends support to the idea that meal-time distractions (分散注意) can mask the clues that we really have eaten quite enough. Moreover, it finds, the caloric fallout of not paying attention to what we’re eating doesn’t necessarily end when a meal is over.

    Rose Cooper from England, and her colleagues gathered 22 men and an equal number of women for an experiment. Each person dined alone, continuously receiving nine small shares of food items. These ranged from cheese twists and potato chips to carrots, cherry tomatoes and sandwiches or sausage rolls.

    Because the goal was to test the potential impacts of distraction on fullness, the researchers randomly assigned half of the participants to eat in front of a computer—and to gain as many wins as possible at the “card” game. Everyone else was told to focus on the sensory qualities of their meal.

    According to their instructions, the participants ate all of the food given to them. Yet people who played a computer game during lunch found their meal less filling than the mindful eaters had. Game players also swallow down twice as many cookies, almost an hour later, when they were allowed all the dessert they wanted (in the name of a taste test). The British scientists present their findings in the February American Journal of Clinical Nutrition.

The real question is why distracted eating should impact snacking. It appears, the scientists say, that memory plays some tricky role in how we register what we eat and the degree to which it satisfies.

Interestingly, eight years ago, Britta Barkeling of Huddinge University in Stockholm and her colleagues reported somewhat related findings. Their 18 overweight subjects had no choice other than to get rid of everything but lunch, on one day—because they were blindfolded. Compared to a day when they could view what they were dining on, these people consumed only three quarters as many calories. Yet even hours afterward, they reported being no less full than on the day they had been able to see their plates.

Of course dining in the dark isn’t practical. And sometimes what we eat doesn’t really invite our absolute attention. But there is certainly a growing mountain of data indicating that mindless eating is a waste of resources, a risk to our waistlines—and a costly threat to health.

63. Rose Cooper and her colleagues did the experiment in order to _______.

   A. show that all the people enjoy snacks

   B. prove that playing computer games is harmful while dining

C. find possible effects of distraction on fullness

D. test the impacts of eating snacks on different people

64. Which is the most effective way to concentrate on your food when dining?

   A. Viewing your food.      B. Blindfolding your eyes.

C. Playing computer games.     D. Eating by oneself.

65. The reason why distracted eating influences snacking may be that ________.

A. you eat less in that case     B. you are cheated by your memory

C. you have consumed more calories     D. you digest what you’ve eaten faster

66. We can conclude from the passage that ________.

A. distracted eating may damage your health

B. eating snacks will make you feel full

C. Britta became famous because of the experiment

D. playing is more important than what we eat

【2011·江西鷹潭市第二次模擬】

       Running like the wind, roaring like thunder, tigers have long been feared and respected as a king of the animal world．But last week a report said that there are no more than 30 wild tigers left in south China．

       This was the conclusion of a team of scientists from China's State Forestry Administration and the World Nature Fund．

       The South China tiger, also known as the Chinese tiger, is native to southern China．In the 1950's, there were over 4000 tigers found in mountain forests in the country．But due to the destruction of their natural habitat and uncontrolled hunting, it has been pushed on to the list of the world's top ten most endangered species．

       Sixty-six of the big cats can be found in the cages of a dozen zoos around China．But they are nothing like their wild cousins．They have lost their natural skills such as hunting and killing．If they were set free they could not look after themselves．

       "Breeding has damaged the quality of the species", said Pei Enle, deputy director of the Shanghai Zoo．

       To reintroduce the species into the wild, the country started a programme to send five to ten young tigers to South Africa．Four of them have already arrived．Progress has been made as two elder tigers have recovered some of their instincts（本能）and can hunt wild animals by themselves at the African base．

       " South Africans are very experienced in reintroducing big animals to the wild．The country has very good natural conditions for the tigers to learn in", said Lu Jun, office director of the National Wildlife Research and Development Center．" We tried in Fujian Province, but it was not successful as there was not a complete eco-chain（生物鏈） and there was a lack of space．"

The tigers should return to China in 2007 when the reservations in Fujian are ready．

71．What is the main reason for the South China tiger becoming one of the world's top ten most endangered species?

       A．Because it has lost its natural instincts．                                B．Because there is not a complete eco-chain．

       C．Because there is no space for it．          D．Because uncontrolled hunting has destroyed its natural living conditions．

72．How is the programme of sending several tigers to South Africa getting on?

       A．Its effect still remains to be seen．

       B．Two tigers can already compete with their wild cousins．

       C．Some of the tigers are already on the road to recovering their natural skills．

       D．The tigers should be able to recover their instincts completely by 2007．

73．By saying " but they are nothing like their wild cousins", the writer means that ______．

       A．they are no longer feared by other wild animals

       B．they don't know how to hunt or kill

       C．a(chǎn) complete change has resulted in the species because of breeding

       D．to reintroduce them into the wild has become an urgent task

74．What is the purpose of sending young tigers to South Africa?

       A．To help the tigers recover their ability to live in the wild．

       B．To provide them with a better environment．

       C．To get the tigers to go on a tour．

       D．To find a complete eco-chain for them．

75．Which one is not the reason for South Africa being chosen as the training place?

       A．Because the tigers can hunt wild animals by themselves at the African base．

       B．Because South Africans are skilled at dealing with the tigers．

       C．Because there is a complete eco-chain and enough space there．

【2011·上海市普陀區(qū)第二次質(zhì)量調(diào)研】
    In recent years many countries of the world have been faced with the problem of how to make their workers more productive. Some experts claim the answer is to make jobs more varied. But

do more varied jobs lead to greater productivity? There is evidence to suggest that while variety certainly makes the workers' life more enjoyable, it does not actually make him work harder.

As far as increasing productivity is concerned, the variety is not an important factor.

    Other experts feel that giving the worker freedom to do his job in his own way is important and there is no doubt that this is true. The problem is that this kind of freedom cannot easily be given in the modern factory with its complicated machinery which must be used in a fixed way. Thus while freedom of choice may be important, there is usually very little that can be done to create it. Another important consideration is how much each worker contributes to the product he is making. In most factories the worker sees only one small part of the product. Some car factories are now experimenting with having many small production lines rather than large one, so that each worker contributes more to the production of the cars on his line. It would seem that not only is the degree of workers' contribution an important factor, therefore, but it is also one we can do something about.

    To what extent does more money lead to greater productivity? The workers themselves certainly think this is important. But perhaps they want more money only because the work they do is so boring. Money just lets them enjoy their spare time more. A similar argument may explain demands for shorter working hours. Perhaps if we succeed in making their jobs more interesting, they will neither want more money, nor will shorter working hours be so important to them.

68.Which of these possible factors leading to greater productivity is not true?

 A. To make jobs more varied.              

 B. To give the worker freedom to do his job in his own way.

 C. Degree of work contribution.

 D. Demands for longer working hours.

69. Why do workers want more money?________

 A. Because their jobs are too boring.                    B. In order to enjoy more spare time.

 C. To make their jobs more interesting.                D. To demand shorter working hours.

70.The last sentence in this passage means that if we succeed in making workers' jobs more interesting, ______.

 A. they will want more money

 B. they will demand shorter working hours

 C. more money and shorter working hours are important factors

 D. more money and shorter working hours will not be so important to them

71 . In this passage, the author tells us _______.

 A. how to make the workers more productive

 B. possible factors leading to greater efficiency

 C. to a certain extent more money lead to greater productivity

 D. how to make workers' jobs more interesting

    Psychology has a new application in the field of medicine. Many doctors, together with their patients, are looking for alternative methods of treatment of physical problems. In large hospitals, modern therapy（療法） seems to focus on the physical disease. Patients may feel they are treated like broken machines. Some doctors have recognized this as a problem. They are now using psychological therapy, in which the patient is working with the doctors against the disease with the help of medicine. The patient does not wait for the medicine and treatment to cure him or her, but instead the patient joins in the fight.

     The doctor knows that a disease affects a patient's body physically. The body of the patient changes because of the disease. He is not only physically affected, but also has an emotional response to the disease. Because his mind is affected, his attitude and behavior change. The medical treatment might cure the patient's physical problems, but the patient's mind must fight the emotional ones. For example, the studies of one doctor, Carl Simonton, M. D., have shown that a typical cancer patient has predictable attitudes. She typically feels depressed, upset, and angry. Her constant depression makes her acts unfriendly toward her family, friends, doctors, and nurses. Such attitudes and behaviors prevent recovery. Therefore, a doctor's treatment must help the patient change that. Simonton's method emphasizes treatment of the “whole” patient.

     The attitude of a cancer patient receiving radiation therapy, an X-ray treatment, can become more positive. The physician who is following Simonton's psychological treatment plan suggests that the patient imagine that he or she can see the tumor（腫瘤） in the body. In the mental picture, the patient "sees" a powerful beam of radiation like a million bullets of energy. The patient imagines the beam hitting the tumor cells and causing them to shrink. For another cancer patient, Dr. Simonton asks him to imagine the medicine going from the stomach into the bloodstream and to the cancer cells. The patient imagines that the medicine is like an army fighting the diseased cells and sees the cancer cells gradually dying and his blood carry away the dead cells. Both the medical therapy and the patient's positive attitude fight the disease.

     Doctors are not certain why this mental therapy works. However, this use of psychology does help some patients because their attitudes about themselves change. They become more confident because they use the power within their own minds to help stop the disease.

     Another application of using the mind to help cure disease is the use of suggestion therapy. At first, the doctor helps the patient to concentrate deeply. The patient thinks only about one thing. He becomes so unaware of other things around him that he is asleep, or rather in a trance（催眠狀態(tài)）. Then the physician makes “a suggestion” to the patient about the medical problem. The patient's mind responds to the suggestion even after the patient is no longer in the trance. In this way, the patient uses his mind to help his body respond to treatment.

     Doctors have learned that this use of psychology is helpful for both adults and children. For example, physicians have used suggestion to help adults deal with the strong pain of some disease. Furthermore, sometimes the adult patient worries about her illness so much that the anxiety keeps her from getting well. The right suggestions may help the patient to stop being anxious. Such treatment may help the patient with a chronic（慢性的）diseases. Asthma （哮喘） is an example of a chronic disorder. Asthma is a disease that causes the patient to have difficulty in breathing. The patient starts to cough and sometimes has to fight to get the air that he or she needs. Psychology can help relieve the symptoms of this disorder. After suggestion therapy, the asthma patient breathes more easily.

     Physicians have learned that the psychological method is very useful in treating children. Children respond quickly to the treatment because they are fascinated by it. For example, Dr. Basil R. Collison has worked with 121 asthmatic children in Sydney, Australia, and had good results. Twenty-five of the children had Excellent results. They were able to breathe more easily, and they did not need medication. Another forty-three were also helped. The symptoms of the asthma occurred less frequently, and when they did, they were not as strong. Most of the children also felt better about themselves. Doctors have also used suggestion to change habits like nail-biting, thumb-sucking, and sleep-related problems.

     Many professional medical groups have accepted the medical use of psychology and that psychology has important applications in medicine.

55. What does the passage mainly discuss?

  A. How to use the mind against disease.

  B. How modern therapy focuses on the disease.

  C. Responses from the medical world.

  D. How suggestion therapy benefits adults and children.

56. How does psychological therapy work?

  A. The patient waits for the medicine and treatment to cure him.

  B. The doctor uses medical treatment to cure the patient's problems.

  C. The doctor, the medicine, and the patient work together to fight disease.

  D. The patient uses his mind to cure himself.

57. What can we learn from the studies of Carl Simonton, M. D.?

  A. The medical treatment can cure the patient's mental disease.

  B. The treatment of a patient by treating the body and the mind is necessary.

  C. The mental treatment is more important than medical treatment.

  D. Few patients have emotional response to the disease.

58. The use of psychological therapy is helpful to some patients in that             .

  A. the medical effect is better with psychological therapy than without it

  B. the patients can see a powerful beam of radiation hitting their tumor cells

  C. the patients' attitudes towards themselves have changed

  D. the patients are easy to accept the methods the doctors use to treat them

59. It can be learned from the passage that suggestion therapy cannot be used to             .

  A. help adults deal with the strong pain of some diseases

  B. help the patients with chronic diseases

  C. help change some bad habits

  D. help cure patients of insomnia（失眠癥）

60. According to the passage, which of the following remains unknown so far?

  A. The value of mental therapy.

  B. The effectiveness of suggestion therapy.

  C. The working principle of suggestion therapy.

  D. The importance of psychology in medical treatment.

 (05·安徽B篇)

When I was small and my grandmother died, I couldn’t understand why I had no tears. But that night when my dad tried to cheer me up, my laugh turned into crying.

.   So it came as no surprise to learn that researchers believe crying and laughing come from the same part of the brain. Just as laughing has many health advantages, scientists are discovering that so, too, does crying.

Whatever it takes for us to reduce pressure is important to our emotional (情感的) health, and crying seems to study found that 85 percent of women and 73 percent of men report feeling better after crying.

Besides, tears attract help from other people. Researchers agree that when we cry, people around us become kinder and friendly and they are more ready to provide support and comfort. Tears also enable us to understand our emotions better; sometimes we don't even know we' re very sad until we cry. We learn about our emotions through Crying, and then we can deal with them.

Just as crying can be healthy, not crying — holding back tears of anger, pain or suffering — can be bad for physical (身體的) health, Studies have shown that too much control of emotions can lead to high blood pressure, heart problems and some other illnesses. If you have a health problem, doctors will certainly not ask you to cry. But when you feel like crying, don't fight it. It's a natural  — and healthy — emotional response (反應(yīng)).

60. Why didn't the author cry when her grandmother died?

A. Because her father did not --ant her to feel too sad.

B. Because she did not love her grandmother.

C. Because she was too shy to cry at that time.

D. Tie author doesn’t give the explanation.

61, It car. be inferred from the text that ______.

A. there are two ways to keep healthy

B. crying does more good to health than laughing

C. crying and laughing play the same roles

D. emotional health has a close relationship to physical health

62. According to the author, which of the following statements is true?

A. Crying is the best way to get help from others.

B. Fighting back tears may cause some health problems.

C. We will never know our deep feelings unless we cry.

D. We must cry if we want to reduce pressure.

63. What might be the most suitable title for the text?

A. Power of Tears                         B. How to Keep Healthy

C. Why We Cry                           D. A New Scientific Discovery

 (05·湖南E篇)

At Dallm/Fort Worth Airport, the lights are controlled by sensors that measure sunlight. They dim immediately when it's sunny md brighten when a passing cloud blocks the sun.

   A wall of windows at a University of Pennsylvania engineering budding has built-in blinds (百頁窗) controlled by a computer program that follows the sun's path.

   Buildings are getting smarter -- and the next generation of building materials

expected to do even more.

   Windows could catch the sun's energy to heat water. Sensors that measure the carbon

dioxide breathed out by people in a mom could determine whether the air conditioning needs to be turned up.

   Many new materials and technology have been designed in the last 15 years. They now being used in a wave of buildings designed to save as much energy as possible. They include old ideas, like "green roofs," where a belt of plants on a roof helps the building keep heat in winter and stay cool in summer, and new ideas, like special coating for windows that lets light in, but keeps heat out.

   As technologies such as sensors become cheaper, their uses spread.

   The elevators (電梯) at Seven World Trade Center, which is under construction in New York, use a system that groups people traveling to nearby floor into the same elevator, thus saving elevator stops. People who work in the building will enter it by swiping (刷) ID cards that will tell the elevators their floor; readouts will then tell them which elevator to use. The building also has windows with a coating that blocks heal while letting in light.

   More new building materials and technology are in development. A Philadelphia building farm is now working on "smart wrap" that uses tiny solar collectors to catch the

sun's energy and transmitters (傳感器) the width of a human hair to move it. They are expected to change the face of the construction industry in the next ten years or so.

72. __ will be developed and used in the construcction industry.

     A. "Green mops" that cool or heat buildings

     B. "Smart wrap" that catches the sun's energy

     C. Sunlight-measuring sensors that control lights

     D. Window coating that lets light in, but keeps heat out                          

73. The elevators at Seven World Trade Center are special because they can ___

     A. send people to floors with fewer stops

     B. teach people how to use their ID cards

     C. make people stay very cool in summer

     D. help people go traveling in the building                                                  

74. The underlined word "it' in the last paragraph refers to _____.

     A. a human being                         B. smart wrap

     C. the sun's energy                        D. a transmitter                             

75. What might be the most suitable title for the text?

     A. Buildings Are Becoming Smarter

     B. Buildings Are Getting More Sunlight

     C. Buildings Are Lacking in Much Energy

     D. Buildings Are Using Cheaper Materials                            

 (05·湖北E篇)

From the moment that an animal is born it has to make decisions . It has to decide which of the things around it are for eating , and which are to be avoided ; when to attack and when to run away . The animal is , in fact , playing a very dangerous game with its environment , a game in which it must make decision—a matter of life or death .

Animals’ ability to act reasonably is believed to come partly from what we may call “genetic (遺傳性的)learning” , which is different from the individual (個體的) learning that an animal does in the course of its own lifetime . Genetic learning is learning by a species —animals of the same kind—as a whole , and it is achieved by selection of those members of each generation that happen to act in the right way . However , the role of genetic learning depends upon how similar the future environment is to the past . The more important individual experience is likely to be , the less important is genetic learning as a means of getting over the problems of the survival game . Because most animals live in ever changing evironments from one generation to the next , it is not surprising to find that very few species indeed depend wholly upon genetic learning .

In the great majority of animals , their particular ways of acting in a new environment are a compound (復(fù)合體) of individual experience added to the action patterns animals are born with .That is why animals can survive .

72．The animal’s life will come to an end          .

       A．if the animal makes a wrong decision    B．if the animal plays a dangerous game

       C．when the animal attacks its enemy        D．when the animal runs too slowly

73．Very few species depend entirely on genetic learning because          .

       A．each generation has its own way of learning

       B．their environments change all the time

       C．they can act reasonably on their own

       D．it takes their whole life to learn

74．When the environment doesn’t change much ,         .

       A．a(chǎn)nimals cannot act in a right way

       B．genetic learning is less important for animals

       C．individual learning plays a less important role

       D．a(chǎn)nimals cannot get over problems on their on their own

75．Animals’ living on generation after generation depends on          .

       A．their natural action pattern with their own experience

       B．the lessons they have learnt during their lifetime

       C．their experience in particular environments

       D．the knowledge passed on by their parents

 (05·湖北D篇)

Thirteen vehicles lined up last March to race across the Mojave Desert , seeking a million in prize money . To win , they had to finish the 142-mile race in less than 10 hours . Teams and watchers knew there might be no winner at all , because these vehicles were missinge a key part drivers .

DARPA , the Defense Advanced Research Projects Agency , organized the race as part of a push to develop robotic vehicles for future battlefields . But the Grand Challenge , as it was called , just proved how difficult it is to get a car to speed across an unfamiliar desert without human guidance . One had its brake lock up in the starting area . Another began by throwing itself onto a wall . Another got tied up by bushes near the road after 1.9 miles .

One turned upside down . One took off in entirely the wrong direction and had to be disabled by remote (遠(yuǎn)距離的) control . One went a little more than a mile and rushed into a fence ; another managed to go for six miles but stuck on a rock . The “winner,” if there was any , reached 7.8 miles before it ran into a long , narrow hole , and the front wheels caught on fire .

“You get a lot of respect for natural abilities of the living things,” says Reinhold Behringer , who helped design two of the car-size vehicles for a company called Sci-Autonics . “Even ants (螞蟻) can do all these tasks effortlessly . It’s very hard for us to put these abilities into our machines .”

The robotic vehicles , though with necessary modern equipment such as advanced computers and GPS guidance , had trouble figuring out fast enough the blocks ahead that a two-year-old human recognizes immediately , Sure , that very young child, who has just only learned to walk , may not think to wipe apple juice off her face , but she already knows that when there’s a cookie in the kitchen she has to climb up the table , and that when she gets to the cookie it will taste good . She is more advanced , even months old , than any machine humans have designed .

67．Watchers doubted if any of the vehicles could finish the race because        .

       A．they did not have any human guidance

       B．the road was not familiar to the drivers

       C．the distance was too long for the vehicles

       D．the prize money was unattractive to the drivers

68．DARPA organized the race in order to          .

       A．raise money for producing more robotic vehicles

       B．push the development of vehicle industry

       C．train more people to drive in the desert

       D．improve the vehicles for future wars

69．From the passage we know “robotic vehicles” are a kind of machines that          .

       A．can do effortlessly whatever tasks living thing can

       B．can take part in a race across 142 miles with a time limit

       C．can show off their ability to turn themselves upside down

       D．can move from place to place without being driven by human beings

70．In the race , the greatest distance one robotic vehicle covered was          .

       A．a(chǎn)bout eight miles                                 B．six miles

       C．a(chǎn)lmost two miles                                 D．a(chǎn)bout one mile

71．In the last paragraph , the writer implies that there is a long way to go          .

       A．for a robotic vehicle to finish a 142-mile race without any difficulties

       B．for a little child who has just learned to walk to reach the cookie on the table

       C．for a robotic vehicle to deal with a simple problem that a little child can solve

       D．for a little child to understand the importance of wiping apple juice off its face