完形填空

先通读短文，掌握其大意，然后从中选出一个可以填入相应空白处的最佳答案．

　　I'll never forget the days when I camped(野营) with my classmates last summer.

　　Early in the morning, 200 1 from the 4th grade came together at the bus station from different schools. After saying goodbye to our parents, we stood in line to get on the buses. It was more than two hours 2 we arrived at the camp ground.

　　We were like 3 just from the cage when we got off the buses, laughing and shouting, jumping and running all over the place. For us, it was our 4 time away from Mum and Dad. Some started feeling homesick(想家) even before dark. But as the night party and dances began, the homesickness was gone.

　　The next day, everyone 5 to the boating class, hoping to be at the head of the others. At first, my friend and I worked hard, but the boat wouldn't listen to us and kept going 6 . Then the boating teacher taught us how to work together. After many tries, we did better.

　　Swimming was my favourite class. It was about one o'clock, the 7 time of a day and the best time to stay in the cool water. The swimming teacher was an interesting man. During class he often made us 8 happily with our mouths wide open. He taught us how to swim under the water.

　　A week 9 before we knew it. During the week I learned many new things and made many new friends. I also learned to take care of myself 10 parents around me.

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完形填空

先阅读短文，掌握其大意，然后从A、B、C、D四个选项中选出一个可以填入相应空白处的最佳答案．

　　There are seas, lakes and forests on the earth. There are cities, towns and farms, 1 . All these things are environments(环境). The environment is everything around you. It can be living(有生命的), like a forest. It can be non-living(无生命的), 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(影响) 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(庄稼), 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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