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先閱讀短文，掌握其大意，然后從A、B、C、D四個(gè)選項(xiàng)中選出一個(gè)可以填入相應(yīng)空白處的最佳答案．

　　There are seas, lakes and forests on the earth. There are cities, towns and farms, 1 . All these things are environments(環(huán)境). The environment is everything around you. It can be living(有生命的), like a forest. It can be non-living(無生命的), 2 a rock or a mountain.

　　No living thing can live 3 . Every living thing depends(依靠) on 4 things in its environment. When something 5 , it affects(影響) something else. If a non-living thing like water becomes 6 to find, plants will be affected. If all plants 7 , the animals that eat plants will be affected.

　　Weather, such as(例如) temperature, wind and rain, can change an environment. 8 can change an environment, too. Some things that people do cause(引起) 9 change or only a small change in the environment. For example, people can 10 the forest and just travel around. They can cut down only a few trees and 11 change the environment very much. On the other hand(另一方面), some things that people do cause 12 change. Sometimes they can change 13 environment by cutting down a forest.

　　 14 changes are bad. If we cut down a forest to build houses or plant crops(莊稼), this may not be 15 . But what would happen if we cut down all trees in all forests 16 these things or if we didn't 17 some and plant something else?

　　It is clear that people are able to 18 an environment. This is why it is important to think about the changes before we make 19 . Let's all work together to 20 it clean and healthy.

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　　Farley worked for the Canadian government. One day, he was ___(1)___ to learn more about wolves. Do wolves kill lots of caribou（北美馴鹿）? Do they kill people?

　　They gave him lots of food and clothes and guns. Then they put him on a plane and took him to ___(2)___. The plane put him down and went away. There were no houses or people in this place. But there were lots of animals--and lots of wolves.

　　People tell terrible stories about wolves. They say wolves like to kill and eat people. Farley remembered these stories, and he was ___(3)___. He had his gun with him ___(4)___.

　　Then one day, he saw a group of wolves. There was a mother wolf with four baby wolves. A father wolf and another young wolf five with them.

　　Farley watched these wolves every day. The mother was a very ___(5)___ mother. She gave milk to her babies. She gave them lessons about life. They learned how to ___(6)___ food. The father wolf got food for the mother. The young wolf ___(7)___ the children. They were a nice, happy family--a wolf family! Farley did not need his ___(8)___ any more. In a short time, he got on well with the wolf family. Farley watched them for five months. He learned many new things about wolves. He learned that many stories about the wolves were ___(9)___. Wolves do not eat people, and they do not eat many large animals. And he also learned bad things about men. It was men who killed many caribou and wolves.

　　Later, Farley wrote a book about wolves. He wanted people to ___(10)___ them and not to kill them.

(1)A．seen	B．told	C．heard	D．found
(2)A．a small town		B．a big city
C．a far place		D．a lonely village
(3)A．afraid	B．happy	C．angry	D．tired
(4)A．at times		B．all the time
C．once a week		D．every afternoon
(5)A．bad	B．good	C．hungry	D．thirsty
(6)A．cook	B．make	C．get	D．pick
(7)A．shout at	B．looked into	C．laughed at	D．played with
(8)A．food	B．clothes	C．gun	D．plane
(9)A．not good	B．not true	C．not easy	D．not clear
(10)A．grow	B．have	C．teach	D．understand

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　　Farley worked for the Canadian government. One day, he was 1 to learn more about wolves (狼) . Do wolves kill lots of caribou (big animals)? Do they kill people?

　　They gave him lots of food and clothes and guns (槍) . Then they put him on a plane and took him to 2 . The plane put him down and went away. There were no houses or people in this place. But there were lots of animalsand lots of wolves.

　　People tell terrible stories about wolves. They say wolves like to kill and eat people. Farley remembered these stories, and he was 3 . He had his gun with him 4 .

　　Then one day, he saw a group of wolves. There was a mother wolf with four baby wolves. A father wolf and another young wolf lived with them.

　　Farley watched these wolves every day. The mother was a very 5 mother. She gave milk to her babies. She gave them lessons about life. They learned how to 6 food. The father wolf got food for the mother. The young wolf 7 the children. They were a nice , happy familya wolf family! Farley did not need his 8 any more. In a short time, he got on well with the wolf family. Farley watched them for five months. He learned many new things about wolves. He learned that many stories about the wolves were 9 . Wolves do not eat people , and they do not eat many large animals. And he also learned bad things about men. It was men who killed many caribou and wolves.

　　Later, Farley wrote a book about wolves. He wanted people to 10 them and not to kill them.

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