. Some animals hibernate in the snow, which can the cold. A. keep out B. keep off C. keep up D. keep back 题目和参考答案——青夏教育精英家教网—

阅读下列短文，从每题所给的（A、B、C和D）四个选项中，选出最佳选项。

　　Did unicorns ever really exist?This is a question that re-mains unanswered today．Some believe that，like the dragon，the unicorn never existed and was simply an animal from afairy tale or mythology'．Others believe that the unicorn stillexists in remote regions of the earth,and can be seen only bypeople of exceptional virtue and honesty．There are still others who believethat the unicorn was a type of sacred animalthat came to earth from heaven and eventually became a human in order to survive．Someday,they believe,these humans will become unicorns once again．A final point of view isthat．like the dinosaur,unicorns once existed but became extinct．This theory suggests that because the unicom's horn（角）was used as a type of medicine,humans hunted the ani-mal out of existence．

　　Animals such as the narwhal may provide evidence（证据）,or give us a clue,that unicorns once existed on earth．The male narwhal is a huge sea creature that can be found in the Arctic seas．This animal has a single horn,or tusk,that projects from its forehead-similar to that of the unicom．In fact,in the seventeenth century,people often confused（混淆）the narwhal's tusk with the horn of the unicorn．The similarity of the male narwhal to the unicom has led some people to believe that perhaps the unicorn is the narwhal's ancestor,or vice versa（反之亦然）．Although narwhals have also been hunted for centuries,they may have escaped extinction for different reasons:they are only found in certain parts of the world,and are hunted by only a relatively small number ofpeople．

(1)

Which of the following is not a belief about unicorns mentioned in the reading ________
[　　]
A．	Unicorns were hunted by humans and became extinct．
B．	Some humans became unicorns in order to survive．
C．	Today,only very honest people can see unicorns．
D．	Unicorns never existed and they were nothing but fairy animals．

(2)

It's believed,according to the passage,that ________ isrelated to the unicorn．
[　　]
A．	a male sea creature called the narwhal
B．	a male whale easily found in every part of the oceans
C．	the dinosaur which has died out completely
D．	A dragon only found in certain parts of the world

(3)

The narwhal________
[　　]
A．	still exists,for nobody have hunted them
B．	is now extinct like unicorns
C．	lives in a very cold habitat
D．	has escaped extinction by traveling to Arctic Oceans

(4)

We are sure to say that________
[　　]
A．	the narwhal provides us evidence that the unicorn exists in the present day
B．	either the unicorn is the narwhal's ancestor or the narwhal is the unicorn's ancestor
C．	unicorns can only be seen by honest and virtuous people
D．	the single horn on the unicorn looks like that ofthe narwhal

LONDON (Reuters) Ecotourism is causing a lot of damage to wildlife and may be endangering the survival of the very animals people are flocking to see, according to researchers.

Biologists and conservationists are worried because polar bears, dolphins, penguins and other creatures are getting stressed and losing weight and some are dying.

"Evidence is growing that many animals do not react well to tourists in their backyard，” New Scientist magazine said.

The immediate effects "researchers have noticed are changes in behavior, heart rates. or stress hormone levels but they fear it could get much worse and over the long term “ could endanger the survival of the very wildlife they want to see. ”

Although money produced through ecotourism, which has been growing at about 10-30 percent a year, has major benefits for poor countries and people living in rural areas, the Swiss-based World Conservation Union (IUCN) and some governments fear not all projects are audited（审计） and based on environmentally friendly policies，according to the magazine.

Transmission of disease to wildlife，or small changes to wildlife health through disturbance of daily life or increased stress levels, while not obvious to the casual observer, may translate to lower survival and breeding，” said Philip Seddon , of the University of Otago in Dunedin, New Zealand.

Scientists have noticed that bottleneck dolphins along the northeastern coast of New Zealand become nervously excited when tourist boats arrive. Similar changes in behavior have been observed in polar bears and yellow-eyed penguins in areas visited by colorists are producing smaller babies.

Conservationists are now calling for more research into the effect of ecotourism on animals and say the industry must be developed carefully. They also want studies done before new ecotourism projects are started.

“The animals’ welfare should be very important because without them there will be no ecotourism，” said Rochelle Constantine of the University of Auckland in New Zealand

1.Which is not discovered to have changed in animals disturbed by tourists?

A. behavior B. birth rate C. hormone levels D. heart rates

2.We may learn from the text that _____.

A. ecotourism must be developed properly

B. polar bears are losing weight without enough food

C. all the poor countries have stopped ecotourism

D. money produced through ecotourism should be spent on wildlife

3.Which of the following is NOT mentioned in the text?

A. Many animals do not react well in their backyard

B. Studies should be done before new ecotourism projects are started

C. Ecotourism has been growing at about 10—30 percent a year.

D. polar bears in areas visited by ecotourists are producing smaller babies.

4.What Rochelle Constantine said in the last paragraph implies that _____.

A. if people want to get high income, they must develop ecotourism

B. animals have rights to live their own life

C. animals are people's good friends

D. people should take good care of wildlife

Plants and animals usually do not live apart, as in many ways they are important to each other. Most green plants can make their own food. The food of other living things, even the food of meat-eating animals, comes directly or indirectly from green plants. For example, some people eat mutton (羊肉); mutton comes from a goat; the goats eat grass. These steps, or links, make up what is called a food chain. Without green plants, all other living things would in time die of starvation.

Plants help animals in other ways too. They furnish homes and shelter for many animals. Many birds, as you know, build their nests in trees. Deer and many other animals use bushes for shelter. And even man depends much upon plants for his shelter. Animals repay some of this debt by helping plants. You may be aware that many insects and some birds do important work for plants by pollinating (授粉) them. You must have also learned how animals often help plants by spreading seeds.

What is waste material for one of these kinds of life is often valuable substance for the other. For example, animals give off carbon dioxide gas when they breathe. When plants make food, they absorb this gas from the air, using the carbon and releasing some of the oxygen back into the air. The oxygen that is released, then, is again supplied to animals. Thus the cycle continues, animals helping plants, and plants helping animals.

All plants and animals have their enemies. Insects eat plants; birds eat insects; other animals kill birds. But here too, animals such as birds and bats help the plants by destroying harmful insects. Many plants and animals are helpful to some living things but are harmful to others. Then there are other rules in nature that act as checks and balances. For example, if there are more animals in a certain area than there is food to support them, some of the animals must migrate or starve. In either case, the number of animals will be reduced until the balance between animals and the available food supply is restored.

These helps and hindrances (障碍) are constantly going on in the plant and animal world to achieve a balance. As long as one living thing is dependent on another, whenever the scales are tipped (使倾斜), nature takes steps to balance the scales again.

(Note: Answer the questions or complete the statements in NO MORE THAN TEN WORDS.)

1.What does the author mean by saying “Plants and animals usually do not live apart”?

2.Besides providing food and shelter for animals, plants can also ______ to help animals to live.

3.“Checks and balances” refers to ______ in the world of animals and plants.

4.What will be the final result if some animals migrate or starve for lack of food?

Plants and animals usually do not live apart, as in many ways they are important to each other. Most green plants can make their own food. The food of other living things, even the food of meat-eating animals, comes directly or indirectly from green plants. For example, some people eat mutton (羊肉); mutton comes from a goat; the goats eat grass. These steps, or links, make up what is called a food chain. Without green plants, all other living things would in time die of starvation.

Plants help animals in other ways too. They furnish homes and shelter for many animals. Many birds, as you know, build their nests in trees. Deer and many other animals use bushes for shelter. And even man depends much upon plants for his shelter. Animals repay some of this debt by helping plants. You may be aware that many insects and some birds do important work for plants by pollinating (授粉) them. You must have also learned how animals often help plants by spreading seeds.

What is waste material for one of these kinds of life is often valuable substance for the other. For example, animals give off carbon dioxide gas when they breathe. When plants make food, they absorb this gas from the air, using the carbon and releasing some of the oxygen back into the air. The oxygen that is released, then, is again supplied to animals. Thus the cycle continues, animals helping plants, and plants helping animals.

All plants and animals have their enemies. Insects eat plants; birds eat insects; other animals kill birds. But here too, animals such as birds and bats help the plants by destroying harmful insects. Many plants and animals are helpful to some living things but are harmful to others. Then there are other rules in nature that act as checks and balances. For example, if there are more animals in a certain area than there is food to support them, some of the animals must migrate or starve. In either case, the number of animals will be reduced until the balance between animals and the available food supply is restored.

These helps and hindrances (障碍) are constantly going on in the plant and animal world to achieve a balance. As long as one living thing is dependent on another, whenever the scales are tipped (使倾斜), nature takes steps to balance the scales again.

(Note: Answer the questions or complete the statements in NO MORE THAN TEN WORDS.)

81. What does the author mean by saying “Plants and animals usually do not live apart”?

82. Besides providing food and shelter for animals, plants can also ______ to help animals to live.

83. “Checks and balances” refers to ______ in the world of animals and plants.

84. What will be the final result if some animals migrate or starve for lack of food?

LONDON (Reuters)------- Ecotourism is causing a lot of damage to wildlife and may be

endangering the survival of the very animals people are flocking to see, according to researchers.

Biologists and conservationists are worried because polar bears ，dolphins, penguins and other creatures are getting stressed and losing weight and some are dying.

"Evidence is growing that many animals do not react well to tourists in their backyard，” New Scientist magazine said.

The immediate effects "researchers have noticed are changes in behavior, heart rates. or stress hormone levels but they fear it could get much worse and over the long term “ could endanger the survival of the very wildlife they want to see. ”

Although money produced through ecotourism, which has been growing at about 10—30 percent a year, has major benefits for poor countries and people living in rural areas, the Swiss—based World Conservation Union (IUCN) and some governments fear not all projects

are audited and based on environmentally friendly policies，according to the magazine.

^4<Transmission of disease to wildlife，or small changes to wildlife health through disturbance of daily life or increased stress levels, while not obvious to the casual observer, may translate to lower survival and breeding，” said Philip Seddon , of the University of Otago in Dunedin, New Zealand.

Scientists have noticed that bottleneck dolphins along the northeastern coast of New Zealand become nervously excited when tourist boats arrive. Similar changes in behavior have been observed in polar bears and yellow-eyed penguins in areas visited by colorists are producing smaller babies.

Conservationists are now calling for more research into the effect of ecotourism on animals and say the industry must be developed carefully. They also want studies done before new ecotourism projects are started.

The animals ，welfare should be very important because without them there will be no ecotourism，” said Rochelle Constantine of the University of Auckland in New Zealand

59. What is the text mainly about?

A. Many animals are dying because of lack of money.

B. There will be no ecotourism without animals.

C Ecotourism could endanger the survival of the wildlife people want to see.

D. More research should be done on ecotourism.

60. We may learn from the text that _____.

A ecotourism must be developed properly

B. polar bears are losing weight without enough food

C. all the poor countries have stopped ecotourism

D. money produced through ecotourism should be spent on wildlife

61. Which of the following is Not mentioned in the text?

A. Many animals do not react well in their backyard

B polar bears in areas visited by ecotourists are producing smaller babies.

C. Ecotourism has been growing at about 10—30 percent a year.

D. Studies should be done before new ecotourism projects are started

62. What Rochelle Constantine said in the last paragraph implies that _____.

A. if people want to get high income, they must develop ecotourism

B. animals have rights to live their own life

C. animals are people's good friends

D. people should take good care of wildlife

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