Trees are useful to man in three very important ways: they provide him with wood and other products, they give him shade, and they help to prevent drought and floods.

　　Unfortunately, in many parts of the world man has not realized that the third of these services is the most important. In his eagerness to draw quick profit from the trees, he has cut them down in large numbers, only to find that without them he has lost the best friends he had.

　　Two thousand years ago a rich and powerful country cut down its trees to build warships, with which to gain itself an empire. It gained the empire but, without its trees, its soil became hard and poor. When the empire fell to pieces, the country found itself faced by floods and starvation.

　　Even though a government realizes the importance of a plentiful supply of trees, it is difficult for it to persuade the villager to see this. The villager wants wood to cook his food with, and he can earn money by making charcoal or selling wood to the townsman. He is usually too lazy or too careless to plant and look after trees. So unless the government has a good system of control, or can educate the people, the forests will slowly disappear.

　　This does not only mean that the villagers? sons and grandsons have fewer trees. The results are even more serious. For where there are trees their roots break the soil up—allowing the rain to sink in and also hold the soil, thus preventing it being washed away easily, but where there are no trees, the soil becomes hard and poor. The rain falls on hard ground and flows away on the surface, causing floods and carrying away with it the rich topsoil, in which crops grow so well. When all the topsoil is gone, nothing remains but a worthless desert.

63. The purpose that the writer wrote this article for is ____ .

　A. to tell people that trees are very useful to man

　B. to warn people not to cut down trees any more

　C. to warn that man mustn't destroy forests any more

　D. to explain how trees help to prevent drought and floods

64. In the writer's opinion, ____ , or the forests slowly disappear.

　A. measure must be taken                      B. people shouldn't draw benefit from the tree

　C. government must realize the serious results      D. unless trees never be cut down

65. According to the article we know it is ____ to prevent the forests from slowly disappearing.

　A. necessary but impossible                    B. necessary but difficult

　C. impossible and unimportant                  D. difficult and impossible

66. In the last two paragraphs the writer wanted to make it clear that ____ .

　A. where there are no trees, the soil becomes hard and poor

　B. where there are many trees, there are fewer floods

　C. where there are no trees, the land might become desert slowly

　D. floods will make the land become desert

完形填空：阅读下面短文，掌握其大意，然后从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。(共20小题；每小题1.5分，满分30分)
“Imagine you are walking along the road. Suddenly you fall over and all the passers-by burst into laughter. You feel very　 36　 and think the world is laughing at you . But in fact, five minutes later, they have　 37　  it ever happened.” The other day when I came across these words in an article, I didn’t agree with the　 38　 .
The author thinks the best thing to do in this kind of　 39  is to pretend nothing has happened, and so avoid　 40　 trouble.
I admit that we should keep　 41　 because “Your tears will only remind others of what happened, while your　 42　 can let them forget it.” But this is far from satisfactory. We should do　43　 to make things better.
I used to be a(n)  44　 girl and not very good at maths. Our new maths teacher asked me a question and I still remember how I hung my head in  45 when I couldn’t answer it.
“If you don’t know the answer, just tell me.” the teacher said, “If you don’t how can I know 　 46　 you know the answer or not?” All of my classmates burst into laughter. My face turned red but the teacher　 47　 me to go to the blackboard and　 48　 what I knew. If I had　 49　 the words in the article, I would have given up. But I tried my best. And to everyone’s  50　, I succeeded! The teacher smiled and said, “Well done! I　 51　 you could do it!”
Since then, I have become active in maths as　 52　 as in other subjects. I used to think doing maths exercises was a waste of time. But now, I know　 53　 I do can make things better. Everyone is the　 54　 of his own fate.
If we make mistakes, we should take on an active　55　 . Laugh, and the world laughs with you; weep(哭泣), and you weep alone.
36．A. nervous      B. excited       C. afraid         D. embarrassed
37．A. realized      B. recognized     C. forgotten      D. remembered
38．A. speaker      B. reader         C. author        D. announcer
39．A. environment  B. surrounding    C. condition      D. situation
40．A. ordinary     B. extra          C. common       D. usual
41．A. confident    B. smart          C. calm          D. strong
42．A. smile        B. worry         C. courage       D. satisfaction
43．A anything      B. something      C. nothing       D. everything
44．A. shy         B. energetic       C. happy         D. clever
45．A. joy         B. pride          C. shame         D. surprise
46．A. what        B. that           C. when          D. whether
47．A. forced       B. invited        C. asked          D. pushed
48．A. bring up     B. put down      C. think about      D. show off
49．A. obeyed      B. doubted       C. refused         D. understood
50．A. expectation  B. disappointment  C. surprise         D. delight
51．A. hoped       B. knew         C. doubted        D. regretted
52．A. long        B. far            C. soon          D. well
53．A. whoever     B. whenever      C. wherever       D. whatever
54．A. architect     B. owner         C. host           D. controller
55．A. position      B. attitude        C. value        D. response

　 I grew up with my best friend, who was just like a sister to me. She was a little older than me. I 　36 to her. If ever I had a problem, she was always 　37 enough to help me out.

　 It wasn’t until the spring of“87” that I noticed a 　38 in her. She was quick to anger, and her attitude was 　39 . I asked her many times what was wrong. Her response each time was “I’m fine. ”

　 As time went on, she became more 　40 , and became a person I did not 　41 anymore. All I wanted was to help her. Every time I tried, she would get 　42 , and say she was fine.

　 The summer of“88”, I finally got my 　43 . My sister had changed due to the effects of 　44 . My mother 　45 put her arms around me, and told me my best friend had 　46 due to an over-dose (过度剂量). Well, for a minute my world stood still, along with my heart. There was nothing to say or do, just tears in the 　47 . Thinking over and over again, if only I had spent the time to notice the 　48 , maybe I could have saved her.

　 My mother, seeing my distress, sat me down and told me this.

　 Some things are not in our 　49 . Sometimes “signs” aren’t enough. You can’t 　50 yourself for the path your friend chose. What you can do is to learn from her mistake, 　51 at school for 　52 , let other children know what happened to your friend, and how it made you 　53 .

　 Since then I’ve never once blamed myself for her death. 　54 I volunteer my time to SADD and DARE. Each year, at an assembly I tell new students what happened and the 　55 of drugs.

36. A. came up　　　　　　　　　　　　　　　　　　　　　　　　 B. looked up

C. looked forward　　　　　　　　　　　　　　　　　　　　　 D. went over

37. A. quick　　　　　　　　 B. old　　　　　　　　　　　　　 C. clever　　　　　　　 D. close

38. A. change　　　　　　　 B. disease　　　　　　　　　　 C. decline　　　　　　　　　　 D. habit

39. A. polite　　　　　　　　 B. acceptable　　　　 C. poor　　　　　　　　 D. rude

40. A. bitter　　　　　　　　 B. weak　　　　　　　　 C. proud　　　　　　　 D. cold

41. A. respect　　　　　　　 B. stand　　　　　　　　 C. care　　　　　　　　　　　　 D. know

42. A. polite　　　　　　　　 B. defensive　　　　　 C. vague　　　　　　　 D. impatient

43. A. surprise　　　　　　　　　　 B. chance　　　　　　　　　　 C. answer　　　　　　　　　　 D. turn

44. A. drugs　　　　　　　　 B. loneliness　　　　　 C. illness　　　　　　　 D. sadness

45. A. tightly　　　　　　　　 B. tearfully　　　　　　 C. angrily　　　　　　　　　　 D. finally

46. A. passed　　　　　　　 B. left　　　　　　　　　　　　　 C. died　　　　　　　　　　　　 D. recovered

47. A. disaster　　　　　　　 B. trouble　　　　　　　　　　 C. disturbance　　　 D. silence

48. A. signs　　　　　　　　 B. effects　　　　　　　　　　 C. causes　　　　　　　　　　 D. results

49. A. way　　　　　　　　　　　　　 B. favor　　　　　　　　 C. control　　　　　　　　　　 D. side

50. A. help　　　　　　　　　　　　　 B. enjoy　 　　　　　　 C. destroy　　　　　　　　　 D. blame

51. A. attend　　　　　　　　 B. volunteer　　　　　 C. engage　　　　　　　　　　 D. settle

52. A. health-awareness B. self-improvement C. self-protection D. drug-prevention

53. A. feel　　　　　　　　　　　　　 B. think　　　　　　　　 C. act　　　　　　　　　　　　　 D. learn

54. A. Still　　　　　　　　　　　　　 B. Instead　　　　　　　　　　 C. Therefore　　　　 D. Anyhow

55. A. use　　　　　　　　　　　　　 B. consequence　　 C. danger　　　　　　　　　　 D. influence

How I wish every family 　　 a large house with a beautiful garden.

A.has　　　　　B.had　　　　C.will have　　　　D.had had