三、完形填空(共15小题，每小题1分，计10分)

阅读下面短文，从各题所给的A、B、C、D四个选项中选出最佳选项。

The world is divided into two parts. One half of the world is rich and the    36   half is poor. In the poor part, a lot of people    37     get enough to eat. When they are ill, none of the hospitals can    38     them because they have not money. In the rich part, a lot of people eat too much. For example, a dog    39     a cat in North America eats better than a child in the poorer countries. The poor countries have some    40     problems. Sometimes the land is too poor to grow  41  on. People there have neither rich land nor enough water. The land can be made better,   42  a lot of things must be done. The people must be taught and water must be    found.

But rich countries have    43    , too. There are not always good places to live in. Sometimes the air is not clean and the rivers are too    44    to swim in or to drink. The roads and streets are full of people and buses. Cars and buses have to move    45   . There is too much noise. Something must be done about these problems. The air and the rivers must be cleaned and be kept clean. More houses have to be built. But these can’t be done easily.

(     ) 36. A. other   B. another   C. others   D. rest

(     ) 37. A. usually   B. always   C. often    D. never

(     ) 38. A. worry   B. receive   C. show    D. protect

(     ) 39. A. like   B. as    C. or    D. and

(     ) 40. A. difficult   B. interesting   C. important   D. different

(     ) 41. A. everything  B. something   C. nothing   D. anything

(     ) 42. A. until   B. and    C. but    D. since

(     ) 43. A. problems  B. pollution   C. population   D. production

(     ) 44. A. public   B. narrow   C. dirty    D. waste

(     ) 45. A. slowly   B. against   C. carefully   D. dangerous