Any observant person has noticed that a wild animal will allow a man or other potential enemy to approach only up to a given distance before it flees. “Flight distance” is the term used for this interspecies spacing. As a general rule, there is a positive relationship between the size of an animal and its flight distance—the larger the animal, the greater the distance it must keep between itself and the enemy. An antelope will flee when the enemy is as much as five hundred yards away. The wall lizard’s(壁虎) flight distance, on the other hand, is about six feet. Flight is the basic means of survival for mobile creatures.

　 Critical distance apparently is present wherever and whenever there is a flight reaction. “Critical distance” includes the narrow zone separating flight distance from attack distance. A lion in a zoo will flee from an approaching man until it meets a barrier that it cannot overcome. If the man continues the approach, he soon penetrates(进入) the lion's critical distance, at which point the cornered lion turns back and begins slowly to stalk (逼近) the man.

　 Social animals need to stay in touch with each other. Loss of contact with the group can be fatal(致命的) for a variety of reasons including exposure to enemies. Social distance is not simply the distance at which an animal will lose contact with his group—that is, the distance at which it can no longer see, hear, or smell the group—it is rather a psychological distance, one at which the animal apparently begins to feel anxious when it goes beyond its limits.

Social distance is not always rigidly(刻板的) fixed but is determined in part by the situation. When the young of apes and humans are mobile but not yet under control of the mother's voice, social distance may be the length of her reach. When added control is needed because of danger, social distance shortens. To show this in man, one has only to watch a family with a number of small children holding hands as they cross a busy street.

1..

 Which of the following is the correct explanation of “Flight Distance” in paragraph 1?

A. Distance between animals of the same species before fleeing.

B. Distance between large and small animals before fleeing.

C. Distance between an animal and its enemy before fleeing.

D. Distance between certain animal species before fleeing.

2..

 If a lion’s critical distance is penetrated, it will __________.

A. begin to attack.

B. try to hide.

C. begin to jump.

D. run away.

3..

. The example of “children holding hands when crossing the street” in the last paragraph shows that ________.

A. social distance is not always needed.

B. there is no social distance among small children.

C. humans are different from animals in social distance.

D. social distance is sometimes determined by outside factors.

4..

. Which of the following can be the best title of the passage?

   A. Critical Distance

   B. Social Distance

   C. Relationship Between Animals

D. Spacing in Animals

Michael Lewis writes about the inner strategies of sports to fans’ delight, and yet describes the personalities and worlds of his real-life characters with such depth that nonfans will enjoy his writing just as much. He looked successfully at baseball management with Moneyball.  Now The Blind Side examines the increasing value placed on the left tackle(左后卫)position in football, the high pressure world of college football recruiting(招收队员), and in particular, the life of one promising young left tackle, Mike Oher.

Oher’s story’s attractive. The big boy was silent to the point that many people thought he was mentally disabled. Then, in a lucky break, Oher and a friend are admitted to a very white, private high school, far across town from their own poor African-American neighborhood. Oher is unbelievably far behind academically, but he’s taken under the wing of Sean Tuohy, one of the school’s coaches, a wealthy man whose family Oher eventually joins. Before long, though Oher almost completely lacks football experience, he leads him to new athletic heights and brings on a fierce competition from eager college coaches.

Lewis’s book brings on many interesting questions: How did a kid like Oher get so lost in the college recruiting system at first? How far should the system bend to meet the needs of a few student athletes? Are the Tuohys the most selfless, or are they using Oher themselves? If so, does it matter, if it benefits him? And what should we think of the college recruiting system that comes after him? These are just a few subjects raised by this highly readable book.

No fan of football should pass on this good one, but even if your interest in sports is only mild, consider tracking down the works of Michael Lewis.

72．Michael Lewis is ________.

A. a football player              B. a high school student       C. a book writer     D. a football coach

73．People thought Oher was mentally disabled because ________.

A. he was too tall and heavy                                     B. he seldom spoke with others

C. he was too academically poor                               D. he was an African-American

74．The third paragraph is intended to ________.

A. explore deep meanings of the book              B. tell how hard it is to understand the story

C. question the poor quality of the book                    D. show what a hot topic the book becomes

75．Which of the following would be the best title?

A. The Blind Side: Progress of a Game               B. Michael Lewis: Thinker of Real Life

C. Where Is College Recruiting System Going?   D. Where Are the African-Americans Going?

The word “conservation” has a thrifty meaning. To conserve is to save and protect, to leave what we ourselves enjoy in such a good condition that others may also share the enjoyment. Our forefathers had no idea that human population would increase faster than the supplies of raw materials: most of them, even until very recently, had the foolish idea that the treasures were “limitless” and could “last forever”. Most of the citizens of earlier generations knew little or nothing about the complicated and delicate system that runs all through nature, and which means that, as in a living body, an unhealthy condition of one part will sooner or later be harmful to all the others.

Fifty years ago, nature study was not part of school work; scientific forestry was a new idea; wood was still cheap because it could be brought in any quantity from distant woodlands; soil destruction and river floods were not national problems; nobody had yet studied long-term climatic cycles in relation to proper land use; even the word “conservation” had nothing of the meaning that it has for us today.

For the sake of ourselves and those who will come after us, we must now set about correcting the mistakes of our forefathers. Conservation should be made part of everybody's daily life. To know about the water table (水位) in ground is just as important to us as a knowledge of the basic math formulas(公式). We need to know why all watersheds (上游集水区) need the protection of plant life and why the running current of streams and rivers must be made to give their full benefit to the soil before they finally escape to the sea. We need to be taught the duty of planting trees as well as of cutting them. We need to know the importance of big, grown trees, because living space for most of man's fellow creatures on this planet is figured not only in square measure of surface but also in cubic（立方体的） volume above the earth. In a word, it should be our goal to restore as much of the original beauty of nature as we can.

1.The author's attitude towards the use of natural resources is_________.

2.According to the author, the greatest mistake of our forefathers was that________.

3.To avoid repeating the mistakes of our forefathers, the author suggests that ________.

4.How can you understand the underlined sentence in the last paragraph?

Can you imagine traveling to work in a one – man submarine? Some scientists believe that some day one – man submarines will be as many as automobiles are today．A famous French driver says, “One day soon, men will walk on the ocean floor as they do on the street!” Perhaps during your lifetime people will travel, and live in the sea．

If human beings want to live in the ocean, many human problems will need to be studied first.

Some of these problems, similar to those of living in outer space, are pressure, lack of oxygen and weightlessness. Many questions are still unanswered．For example, can our blood make itself fit for underwater surroundings? What will happen to our muscle if we live in the water very long? Scientists are looking for answers．

Perhaps in the future man will live in the sea, away from the crowded and noisy cities on land．Then sea has plenty of space, not only for floating living buildings and parks, but also for storing supplies and for underwater travel．

Some scientists believe that ocean living will benefit man in more than physical ways. In the freedom and beauty of the deep sea, man may find new sources of joy．

1.What can we do if we live in the ocean?  (    )

A．We can have plenty of oxygen．

B．We can be fit to live in the water very well．

C．We needn’t worry about things like weightlessness．

D．We can travel and work in the sea．

2.Why do some people hope to leave cities to live in the sea? Because_____．  (    )

A．people think they can live crowdedly in the sea

B．people wish to go the quiet seafloor to travel for several days

C．people want to break away from the crowded and noisy cities where they live now

D．only in this way can people get rid of noise pollution

3.In what ways could ocean living be helpful for man?  (    )

A．People can swim freely as much as possible．

B．People can be interested in the new pleasure there isn’t anywhere else．

C．The sea can supply people with enough foods and other things, so people needn’t work．

D．People can go boating and go to the park as often as possible．

4.Which of the following is the similar problem as that of living in outer space?  (    )

A．We are short of oxygen．

B．We are not familiar with the underwater surrounding．

C．We may die of weightlessness．

D．We can finds new joys．

5.Which of the following statements is true according to the passage?  (    )

A．The scientists have not solved the problem of weightlessness underwater．

B．The scientists have solved the problem of weightlessness when man live in space．

C．Some scientists believe that ocean living will benefit man in no more than physical ways．

D．Sea has plenty of space only for floating living buildings and parks．

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