山东大学网络教育专升本入学模拟考试 英 语 试 题(1) 模拟题及答(17)

Have your ever wondered why different animals or pests have their particular colours? Colours in them seem to be used mainly to protect themselves.

Birds, especially seagulls, are very fond of locusts, but birds cannot easily catch locusts because locusts change their colours together with the change of the colour of crops. When crops are green, locusts look green. But when crops are ripe, locusts take on exactly the same brown colour as crops have. Some other pests with different colours from plants are usually easily found and eaten by their enemies. So they have to hide themselves in terror for lives and appear only at night.

If you study the animal life in any part of the world, you will find the main use of colouring is to protect themselves. Bears, wolves and other beasts move quietly through forests. They are usually invisible to the eyes of hunters, because they have the colour much like the barks of tress.

An even more strange act remains to be noticed. A kind of fish living in seas can send out a kind of very black liquid when it faces danger. While the liquid spreads over, its enemies cannot find it, and it immediately swims away. Thus, it has existed up to now though it is not powerful at all.

71. This passage mainly talks about

A. the change of colour in locusts

B. the protective coloration of animals and pests C. how a certain sea fish protects itself

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专升本入学考试-大学英语-模拟题及答案

D. animals or pests can dye themselves different colours

72. Locusts are ____ but they are not easily wiped out by their enemies because————

A. animals; they are powerful enough

B. beasts; they are dangerous to their enemies C. pests; they take on the same colours as crops D. birds; they fly extraordinarily fast

73. The pests that have different colours from plants usually appear at night because ______ .

A. their enemies can easily find them and eat them B. they have the habit of coming out in darkness C. it's easy for them to destroy plants in darkness D. birds take their rest when night comes

74. Bears and wolves have the same colours as barks of trees because ______ .

A. they fear other beasts

B. they like brown or grey colours

C. they enjoy walking through forests quietly

D. the colours help prevent themselves from being noticed

75. A certain fish living in seas has lived through millions of years because _______ .

A. it is the most powerful in the sea

B. no other fishes can swim so fast as it can

C. it can send out a kind of liquid which makes its enemies unable to find it D. the liquid it sends out can kill its enemies

Passage Four

1970 was World Conservation Year. The United Nations wanted everyone to know that the world is in danger. They hoped that governments would act quickly in order to \there were 1,300 different plants, trees and flowers in Holland. But now only 866 remain. The others have been destroyed by modern man and his technology. We are changing the earth, the air and water, and everything that grows and lives. We can't live without these things either. If we continue like this, we shall destroy ourselves.

What will happen in the future? Perhaps it is more important to ask \living in the world of tomorrow are the young of today. A lot of them know that conservation is necessary. Many are helping to save our world. They plant trees, build bridges across rivers in forests, and so on. In a small town in the United States, a large group of girls cleaned the banks of 11 kilometres of their river. Young people may hear conservation through a record called \from it will help conserve wild animals.

76.The main idea of the first paragraph is ______ . A. the danger of our world

B. the importance of conservation C. that we're destroying ourselves D. that we are changing our world

77.There are fewer plants, trees and flowers in Holland now perhaps because ______ according to the passage.

A. Holland does not need so many plants, trees and flowers B. some plants, trees and flowers are dangerous

C. there has not been a lot of conservation in Holland

D. many plants, trees and flowers do not grow there any more 78.We shall destroy ourselves if we don't change ______. A. the modern man B. modern technology C. our rivers and forests D. the United Nations

79.\was ______ . A. a record calling on people to conserve nature B. a rule worked out by the United Nations C. an important book published in 1970 D. an idea that nobody would accept

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