People have long debated the essence(本质)of human nature.Some people think humans are born good.In San Zi Jing(Three Chara~er Classic),a Chinese children’s educational book from the13th century, we read:“Men at birth are naturally good.Their natures are similar, their habits become different.’’

Yet some philosophers disagree with this.They think men are born selfish and vicious(恶的).For example,Thomas Hobbes,the 1 7th century English philosopher argued that men are born self-interested and with a liking for war.

Over the centuries,different philosophers have argued their cases.Now the results of a new study,which contrasts the behavior of very young children and young chimpanzees(黑猩猩)suggests that human beings are born sociable and helpful to others,according to a New York Times report.

“Of course every animal must to some extent be selfish to survive.But the biologists also see

in humans a natural willingness to help.”The New York Times science reporter Nicholas Wade writes.

Wade quotes a book published in October by American psychologist Michael Tomasello.

Tomasello writes:“When infants(婴儿)18 months old see an unrelated adult whose hands are full and who needs help opening a door or picking up a dropped clothespin,they will immediately help.The helping behavior seems to be innate because it appears so early and before many parents start teaching children the rules of polite behavior.’’

Tomasello finds that this behavior is not the result of an incentive(动机)of a reward,suggesting training does not influence it.And it seems to happen across cultures,with their different timetables for teaching social rules.For these reasons,Tomamsello concluded that helping is natural,not something taught by parents or culture.

And it seems that infants cannot only help in practical ways,it can also help with information,Tomasello writes.From the age of 1 2 months they will point at objects thin all adult pretends to have lost.Chimpanzees,by contrast,never point at things for each other, and when they point for people.it seems to be as a command to go fetch something rather than to share information.

49.What is the article mainly about?

      A.The behavior of young children.

      B.Former philosophies about human nature.

      C.The difference between babies and baby chimpanzees.

      D.A new study of human nature.

50.According to Michael Tomasello, human beings are born           .

       A.similar to chimpanzees in nature        B.selfish and Vicious

       C.sociable and helpful       D.with a liking for war

51.Of all the following,      has a negative attitude towards human nature.

      A.Three Character           B.Thomas Hobbes

      C.Nicholas Wade    D.Michael Tomasello

52.According to the study,it's safe to say that          .

       A.human beings are not selfish

       B.children like to help others when they get a reward

       C.different countries teach social rules at different times

       D.children tend to be helpful if they are taught early

Alzheimer's disease is a major national health problem. Nearly 2 million Americans over the age of 65 have Alzheimer's disease. It is a leading cause of death among the elderly. But Alzheimer's disease is not confined(限于) to the aged. There may be a million or more people under the age of 65 suffering from the disease.

At one time, people suffering from the disease were said to be "getting old". The disease was thought to be a natural part of growing old, but it is now known that Alzheimer's disease strikes young and old alike. It is an organic(器官的) disease that destroys brain cells.

Alzheimer's disease affects the patient's memory, speech, and movement. In the beginning stages of the disease, the patient may seem slightly confused. He may have trouble speaking. Then the patient's memory begins to fail. He may forget dates, telephone numbers, names and plans.

As the disease progresses, the patient may not recognize family and friends. These symptoms(症状) often cause terrible anxiety in the patient. He may feel lost and frightened. Sometimes the patient reacts with wild and bad behavior.

In the last stages of the disease, the patient may not be able to take care of himself. He may have lost the ability to speak and walk.

Scientists don't know exactly what causes Alzheimer's disease. It may be caused by a virus(病毒). It may be caused by a poisonous substance(物质) in the environment. At present, there is no cure for the disease. But there are ways to slow its progress. Exercise and physical treatment can help the patients of this disease.

60. The main idea of the passage is that Alzheimer's disease _______.

  A. is a terrible part of the aging process  B. is an organic disease that affects young and old

C. can be cured by physical treatment    D. causes forgetfulness

61. All of the following are symptoms of Alzheimer's disease EXCEPT _______.

A. forgetfulness  B. difficulty in speaking  C. loss of sight  D. loss of the ability to walk

62. According to the passage, which of the following may be a cause of Alzheimer's disease?

  A. Poisons produced by the brain.   B. Getting old.  C. A virus.  D. Lack of exercise.

63. The progress of Alzheimer's disease can be slowed by ______.

  A. operation  B. a change in environment C. medicines D. physical treatment and exercise

All young people dream of travelling the world. They are restless and very eager to see new sights. However, they have little idea how they would really do it if given the chance. Because their knowledge of geography is quite limited, they seldom know much about the places they wish to visit or how they would get there.?

Already hundreds of thousands of Chinese student tourists are visiting these places-Wuyi, Lhasa, Lijiang, Dali, Vientiane and Phnom Penh. Indeed, these students will soon be the most travelled generation in China’s long history. The World Tourist Organization predicts that a quarter of a century from now the number of Chinese tourists going abroad will be twenty times what it is today. The largest percentage of these tourists will visit Southeast Asia. Not all Chinese who travel abroad will be tourists, however. More and more youths are deciding to volunteer their skills in this region; much like their peers in th-e Peace Corps and VSO.?

Critical thinking skills required include planning for a trip and solving problems after the trip has begun. The focus is on how to read an atlas (地图集) to make travel plans and how to find ways of travelling. An atlas offers a wealth of information about geography and is one way to increase students’ awareness of their global environment. Use of an atlas especially addresses the needs of students with different visual and spatial (空间的) learning styles.

71.The main idea. of the first paragraph is ________.

   A. all young people wish to travel around the world

   B. all young people like to learn the knowledge of geography

   C. all young people like travelling but their knowledge of geography is quite limited

   D. all young people are aware of the places they are going

72. These places, Wuyi, Lhasa, Lijiang, Dali, Vientiane and Phnom Penh, lie in ________.

   A. China         B. Europe         C. Vietnam         D. Asia

73.Which of the following statements is TRUE?

  A. The number of Chinese tourists going abroad will be twenty times what it is today in about 25 years.

  B. The number of Chinese tourists going abroad will be twenty times what it is today in .about 10 years.

  C. Southeast Asia will become the most popular visiting place in the world.

  D. Young people will be addicted to Internet travelling.

74.One way to increase students’ awareness of their global environment is for them to ________.

   A. watch TV         B. listen to radio news   C. read an atlas           D. plan a trip

75.The underlined phrase “a wealth of” can be replaced by “_________”.

   A. a number of       B. a great many   C. a great many of      D. a great deal of

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