完形填空(共15小题，每小题1分；满分15分)

阅读下面短文，掌握其大意，然后从各小题所给的四个选项中，选出一个最佳答案。 a chariot (马拉战车some time the king started to race against Wu. But no matter(无论the king raced against Wu, Wu always won. chariot. But 1 don't think you have taught me everything about you I know, " Wu. "But you have not learned everything. The thing about driving a chariot is to think of the horses. The driver of the chariot and the horses should work together. You can then go very and drive for long distances(距离). But your problem is this： me, you are afraid that I will catch up with you. whether you are in front of me or behind me, you are thinking of me. You are not thinking of your thinking of me. You think only of your horses. "

( ) 41. A. calls B. names C. called

( ) 42. A. In B. After C. Since

( ) 43. A. times B. days C. weeks

( ) 44. A unhappy B glad C pleased

( ) 45. A playing B. racing C running

( ) 46. A everything B. something C. anything

( ) 47. A. asked B. told C. answered

( ) 48. A. dangerous B. newer C. most important

( ) 49. A. slow B. soon C. fast

( ) 50. A. catch up B. do C.help

( ) 51. A. beside B. in front of C. next to

( ) 52. A. So B. But C. Or

( ) 53. A. cows B. dogs C. horses

( ) 54.A. start B. stop C. keep

( ) 55. A. mustn't B. can C. must

阅读理解(共15小题，每小题2分；满分30分)

阅读下列短文，根据短文内容，从每小题所给的四个选项中，选出一个最佳答案。

Trees are useful to man in three very important ways. The first important way is that they provide(提供) man with food, wood and other products. Trees provide not only man with food, but also many animals with food. Without trees many animals could not live on the earth. It's not easy for man to live on the earth, either.

The second important way is that trees give us shade. On a hot summer day, people are eager(渴望)to have a rest under the shade of a tree after they have walked a long way. You can imagine(想象)how important the shade of a tree is to man and to animals.

The third important way is that trees help to prevent drought and floods (旱灾和水灾). However, in many parts of the world, man has not realized(意识到)the third