Of the thousands of different kinds of animals that exist in the world man has learned to make friends with an enormous number. Some are pets, and offer him companionship; some give protection, and some do hard work which man cannot do for himself. Dogs, which serve man in all three capacities, are found in various species in all countries of the world. The Husky can live in the cold polar regions, and the Saluki is at home in the hottest parts of Central Africa. The inhabitants of certain countries are dependent for their very lives on the camel. In the West Indies the little donkey, strong and sure-footed, carrying heavy loads even in mountainious places, is a familiar sight.

Trained and tamed for many generations, domestic animals(牲畜)are not accustomed to roaming(到处走动)in search of food and shelter. They look to their masters to provide for their needs, and as long as these are supplied, they are content to do what their masters require.

All domestic animals need proper food. It must be suitable for them, sufficient in quantity, fresh and clean. Some people feed a pet dog or cat on odds and ends of table scraps(剩饭), and then wonder why the animal seems tired and dull. The quantity of food depends on the size of the animal and the amount of exercise it takes. Overfeeding is as bad as underfeeding. Containers for food and water must be washed regularly if the animal is to maintain good health.

Even well cared for animals may sometimes fall ill. If this happens, the wise master seeks the best advice he can get. All sorts of medicines and treatments are available for sick animals, and in some countries organizations exist to provide them free or at a cheap price. Useful, friendly, hardworking animals deserve to have some time, money and attention spent on their health.

71. What main idea does the author want to convey in the first paragraph?

A. There exists thousands of species of animals in the world.

B. Man came to establish a close relationship with a number of animals.

C. In some regions a donkey seems to be a very useful beast.

D. An animal will be useless unless domesticated.

72. When an animal doesn’t get enough food, it will probably　　　　 .

A. refuse to obey its master B. immediately fall ill

C. require its master to offer some food　　　 D. seek for food on its own

73. Which of the following is NOT true of dogs according to the passage?

A. They can act as friends, guards, and servants to man.

B. They have great adaptation for the environment.

C. There live a great variety of species of dogs on the globe.

D. The Husky and the Saluki are the strongest species ever known in the world.

74. To keep a domestic animal physically fit, its owner is advised　　　 .

A. not to hesitate to spend enormous amount of money on it

B. to pay attention to its proper feeding

C. not to allow it to take excessive amounts of exercise

D. to join some sort of pet-keeping organizations

75. Which of the following would be the best title for this passage?

A. Domesticated Animals—Man’s Best Friends

B. Proper Diet—the Road to Health

C. The Advantages of Raising Domestic Animals

D. Some Tips on Pet-keeping

As a professor at a large American university, there is a phrase that I hear often from students: “I’m only a 1050. ”The unlucky students are speaking of the score on the Scholastic Aptitude Test (SAT）, which is used to determine whether they will be admitted to the college or university of their choice, or even have a chance to get a higher education at all. The SAT score, whether it is 800, 1 100 or 1550, has becomes the focus at this time of their life.

It is obvious that if students value highly their test scores, then a great amount of their self-respect is put in the number. Students who perform poorly on the exam are left feeling that it is all over. The low test score, they think, will make it impossible for them to get into a good college. And without a degree from a prestigious university, they fear that many of life’s doors will remain forever closed.

According to a study done in the 1990s, the SAT is only a reliable indicator(指示物) of a student’s future performance in most cases. Interestingly, it becomes much more accurate when it is set together with other indicators——like a student’s high school grades. Even if standardized tests like the SAT could show a student’s academic proficiency（学业水平）,they will never be able to test things like confidence, efforts and willpower, and are unable to give us the full picture of a student’s potentialities（潜力）. This is not to suggest that we should stop using SAT scores in our college admission process. The SAT is an excellent test in many ways, and the score is still a useful means of testing students. However, it should be only one of many methods used.

42．The purpose of the SAT is to test students’　　　 .

A．strong will　　　　　　 B．academic ability

C．full potentialities　　 D．confidence in school work

43．Students’ self-respect is influenced by their　　 .

A．scores in the SAT　　　　 B．achievements in mathematic

C．job opportunities 　　　　D．money spent on education

44．“A prestigious university” is most probably　　　 .

A．a famous university　　　 　　　　　　　　 B．a technical university

C．a traditional university D．an expensive university

45．This passage is mainly about　　　 .

A．how to prepare for the SAT　 　　　　　　　　　 B．stress caused by the SAT

C．American higher education　 　　　　　　　　　 D．the SAT and its effects

______the workers had the flu.

A. A large amount of   B. A good many of    C. A great number   D. A great many

Damage to Ozone Layer Gets Worse

    In the middle of winter, when snow is falling in many parts of the United States, scientists have sounded a warning to people who plan to spend many hours in the sun this summer．The warning: The sun's summertime rays are more dangerous than once thought.

    A team of scientists from 80 nations recently reported to the United Nations that a layer of ozone（臭氧层）in the atmosphere, which protects humans from harmful levels of ultraviolet（紫外线）radiation, will be thinner over the United States this summer．The thinner layer allows more ultraviolet rays from the sun to reach Earth．The extra amount of ultraviolet radiation could cause an increase in the number of cases of skin cancer.

    Scientists first became concerned about the layer in the mid-1980s when a hole was discovered in the layer above Antarctica during the winter．The hole was caused in chemicals used in refrigerators and air conditioners．When these chemicals are sent out into the atmosphere, they produce gases that destroy the ozone.

    Concern about the protective ozone layer rose more recently when data from satellites and ground stations showed that ozone levels were dropping over areas other than Antarctica．Low ozone levels were recorded in the spring and summer over the United States and over other populated areas in the world.

    Although many countries have already begun stopping the use of ozone-destroying chemicals, the new findings are expected to advance the timetable for a total ban of the chemicals.

The scientists have observed the ozone layer ______．

    A．since 1980                     B．since last winter

    C．for more than 20 years            D．for about one year

The ozone layer in the atmosphere can ______.

    A．do a lot of good to human beings in many ways

    B．protect humans from diseases caused by bad weather

    C．do a lot of harm to human beings in the summer-time

    D．protect humans from harmful levels of ultraviolet radiation

Scientists first found that there was a hole in the ozone layer ______.

    A．above Arctic during the winter in the mid-1980s

    B．above Antarctica during the winter in the mid-1980s

    C．over somewhere in the north of the equator in 1980

    D．over the USA in the summertime in the mid-1980s

The damage to the ozone layer was caused by ______.

    A．the changeable weather          B．ozone-destroying chemicals

C．chemicals from refrigerators      D．chemicals from air conditioners