The world is divided into two parts. One half of the world is rich and   26  is poor. In the poor part, a lot of people have  27 got enough to eat. When they are ill, none of the   28 can receive them because they have no money. In the rich   29 , people eat very well,   30 a dog or a cat in North America eats   31 than a child in poorer countries.
The poor countries have some difficult problems. Sometimes the land is too poor to grow  32 on. People there have   33 rich land nor enough water. The land   34 be made better, but a lot of things must be done. The people must be taught and water must   35 .
But rich countries have problems, too. There are not always good places to   36 . Sometimes the air is not clean and the rivers are too   37 to swim in or to drink. The roads and streets are full of people and cars. Cars and buses have to move   38 . Noise is too much. Some people have no houses to live in. Something must be done about these problems. The air and the rivers must be cleaned and be   39 clean. More houses have to be built.   40 these things cannot be done easily.

The world is divided (分) into two parts. One half of the world is rich and         is poor. In the poor part, a lot of people have never got enough to eat. When they are ill,        the hospitals can receive them because they have no enough           . In the rich part, a lot of people          too much. For example, a dog or a cat in North America eats more than a child in poor countries.
The poor countries have some other difficult problems. Sometimes the land is too poor to grow           on. People there don’t have rich land or enough water. The land can be made better, but a lot of things must be done. The people         be taught and water must be found.
But rich countries have problems. too. There’re not good places to         . Sometimes the air is not clean and the rivers are too dirty to swim in or drink. The roads and streets are full of people and buses. Cars and buses have to move         . Noise is too much. Some people don’t have houses. People must do something about the problems.
People must clean the air and the rivers, and they must         them clean. People have to build more houses.        we can’t do these things easily.

读下面的文章,用方框内所给单词的适当形式填空。每个单词限用一次。

   The world is divided into two important parts．One half of the world is rich and the other half is poor．In the poor part，a lot of people never get enough 1 ．In the rich part，a lot of people eat too much．In one part，children are hungry and in the other，a lot of people are fatter and fatter and have to go on diets or take some exercise to lose  2 ．For example，a dog or a cat in North America eats 3 than a child in poor countries．

Poor countries have some 4 problems．Sometimes the land is too poor to grow anything．

The land can be made better，but a lot of things must be done first．The people must 5 and water must be found．

But rich countries have problems，too．They are not always pleasant places to live in．Sometimes the air is too dirty 6 and the rivers are too dirty to swim in or to drink．The roads and streets are full of people and buses．Cars usually move slowly．Noise is 7 ．Some things wi1l have to be done about these problems．But these can’t be done 8 ．