阅读理解。 The rich and the poor The world is divided (分为)into two main parts . The difference is that one part is rich  and the other is poor . In the poor part , a lot of people never get enough to eat . In the  rich part , a lot of people eat too much . In one part , child starve (饿死)and in the other ,  a lot of people get fatter and fatter and have to go on diets (吃特别饮食), or do special  exercises in order to lose weigt. The poorer countries have special problems . Sometimes the land is too poor to grow  anything on . The land can be improved (改善), but a lot of things must be done first . The  people must be educated an water must be found. But rich countries have problems , too . There are not always pleasant places to live in .  Sometimes the air is too dirty to breathe , and the rivers are too dirty to swim in or to take  water from . The roads are too crowded to drive along . Large numbers of people do not have  decent (象样的)housed to live in . Some things will have to be done about these problems .  The air and the river will have to be cleaned , and more houses will have to be built. Answer the questions : 1. What’s the difference between the two parts ? ___________________________ 2. Do the poorer countries have many problems ? What for example ? ___________________________ 3. Can anything be done about it ? ___________________________ 4. What must be done, for example ? ___________________________ 5. Can all this be done easily ? ___________________________