（    ）53．A．wind          B．rain            C．snow           D．man

（    ）52．A．dry            B．keep          C．drink          D．have

（    ）51．A．run            B．stay            C．carry           D．leave

（    ）50．A．another         B．the other       C．other           D．others

（    ）49．A．grown         B．cut down      C．watered        D．looked after

（    ）48．A．look for        B．find out      C．look out        D．take out

（    ）47．A．deserts                 B．forests         C．fields           D．hills

（    ）46．A．long           B．longer          C．longest         D．the longest

（    ）45．--Bob, you won the boys' 400 meters race. Congratulations.

         --_________

A．Where           B．That's nothing        C．What a pity        D．Thanks a lot

    通读下面短文，掌握其大意，然后在各小题所给的四个选项中，选出一个最佳答案，并将其字母编号写在题号前的括号内。

Long, long ago, there were great cities in many places in North Africa．But they are not there any  46  ．At that time there were gardens and trees and grass. But now these places are like  47  . Scientists began to study this land to  48  what had happened．Many of them believe the land died when the trees were  49 

     Trees help _ 50   plants to grow. Tree roots hold the soil in place. They try to make the soil   51   in one place. In forests, leaves on the ground   52   rainwater. Trees near farms protect growing plants when a strong   53   comes.

Now, we try to   54   trees. In many forests, when a tree is cut down, a new tree is planted in its place. We don't want the land   55  ．

（    ）44．Things would be much better if he ______to hospital a little earlier.

     A．go                B．goes             C．went                D．will go