In the past, man did not have to think about the protection of his environment．There were few people on the earth, and natural resources seemed to be enough.

　　 Today things are　 36　 , the world has become too crowded. We are using up our natural resources too quickly and at the same time we are polluting our environment with dangerous chemicals. If we keep doing this, human life on the earth 　 37　 survive(生存）.

　　 Everyone realizes today that if 　 38　 fishes are taken from the sea, there will soon be none left. Yet, with modern fishing ways, more and more fishes are caught. We know that if lots of trees are cut down, forests will disappear and nothing will grow on the earth. Yet we　 39　 to use bigger and more powerful machines to cut down trees.

　 We realize that if rivers 　 40　 with waste products from factories, fish will die.　 41　 , in most countries wastes are still put into rivers or into the sea.

We know, too, that if the　 42　 of the world keep on rising at the present rate, in a few years there will not be enough food. What can we do to solve these problems? If we eat 　 43　 , there will be more food for everyone．Land that is used to grow crops feeds　 five times more people than land where animals are kept．

　 Our natural resources will　 44　 longer if we learn to recycle them．

　 Finally, if we educate people to think about the problems, we shall have a better and cleaner　 45　 in the future.

36. A. common 　　B. the same 　　C. changeable 　　D. different

37. A. may not 　　B. will not 　　 C. shall not 　　　 D. could not

38. A. too many　　 B. many too　　 C. too much　　　 D. much too

39. A. continue 　　B. have 　　　C. ought 　　　D. decide

40. A. pollute　　 　B. will pollute　 　C. are polluted 　　　D. are polluting

41. A. And 　　　　B. However 　　　C. Generally 　　　D. Therefore

42. A. production 　　B. pollution 　　 C. population 　　D. Development

43. A. more vegetables and less meat　　　 B. less vegetables and more meat

　 C. more vegetable and more meat　　　 D. less vegetable and less meat

44. A. use 　　 B. stay 　　　C. keep 　　　 D. last

45. A. nature 　　　B. sea 　　 C. planet 　　　D. forest

Mr. White is a farmer. Last month he 36 his truck to town and on the way his truck knocked down a  37  and hurt him. He sent the boy to a  38 at once. He paid a lot of money for that, but the boy’s  39 wanted to get more money from him. So they said their son could no longer lift his 40 arm above his head.
Mr. White’s lawyer(律师) came and asked the boy a few questions in the court(法庭). “Now, my boy,” he said, “you were hurt 41 , weren’t you?” “Yes, sir,” said the boy. “And you can’t lift your right arm now, can you?” “42 , sir.”
“Could you 43  us how you can lift your right arm?” Slowly the boy lifted his right arm before his nose. “Poor boy,” said the lawyer. “And how 44  could you lift it before the accident?” “Oh, very high,” said the boy proudly (自豪) and the arm went up right over his 45 .

“Learning a language is easy. Even a child can do it!”
Most adults who are 36  a second language would not agree with this. For them, learning is a very difficult task. They need much time to study and practice, and even sometimes they don’t get good results. But learning a language is __37 _for children.
Language teachers often offer __38__ to language learners:“ Read as __39 _as you can”“ Practice __40___the language every day”
But what does a _41__language learner do? Language learning research shows that successful language learners are similar__42___ some ways.
Successful language learners are learners with purpose. They will try any way to communicate. They are __43__in language learning because they know __44__why they learn a language . They try every chance __45__more, speak more, read more and write more.
Are you successful in language learning? If it is less successful, you should do well to try the above ways.

Tom is the son of a farm owner. One New Year’s Day, when he was 15, his father asked him 36  on the farm for one year when he was free. Tom was 37  with his father’s idea.“That isn’t my job. I have  38 school work to do.” Hearing this, his father said, “I promise to give you the best present if you  39  finish one year’s work.” Tom thought for a while and 40  .

Starting one Saturday, the boy got up early and worked hard until evening, just like  41 farmer. Time passed quickly. Tom’s crops(庄稼) grew well. 42  the last day of the year, the father called his son to him. “I’m happy to see that you have worked very hard the whole year,” said the father. “Now, tell me  43  you want.”

The boy smiled and showed his father a big piece of bread   44  his wheat. I’ve already got the best present: No pain, no gain. I think this is what you wanted me to know.” His father was  45  to hear that.