45．         of foreign players in America’s NBA          ．

      A．The number，are increasing                     B．A number, has increased

      C．The number, has increased                          D．A number，are increasing

Today  46  people live in cities．So there is usually little room in a city to grow food．47  of the land in a city is used  48  homes, shops, roads and parks．

Most food for city  49  is grown in the countryside．It is often brought to the city by truck, train and plane．Some food is even carried into the city by car．

Do you live in a city? If you  50  , think of all kinds of food you eat in a day．All of the food comes from the countryside．The wheat(小麦)for your bread is grown on farms in the countryside．So are vegetables．

Water is   51  thing that cities get from the countryside．Everyone needs water every day．We use a little of it for  52．But we use even more to  53   bathtubs (浴缸), run showers, and wash streets．

The  54    used by cities comes mostly(主要的) from rain．But people cannot use the rain  that frills on cities．The rain  55  dirty as it falls  56  dirty air．Once it hits city buildings or streets, the rain will  57  more dirt(尘埃)．It is not good for drinking  58  bathing．

So cities must reach out to the  59  countryside for water．There, the rain falls through  60   onto trees and grass．The fallen rain runs into rivers and lakes．So it is important to keep both cities and the countryside clean．

44．Jim          his father．They are          outgoing．

A．looks like, all                                           B．takes after, both

C．looks after, both                                        D．takes care of, all

43．         I came to China, I’ve been learning          about my family history．

A．When, a lot         B．As, a bit            C．Since, a lot         D．Since, a lot of

 42．Let your eyes          the text quickly to find answers          you are looking for．

A．look through, who                         B．to look through, which

C．looking through, what                       D．look through, that

41．――Num, I think I am well enough to go to school．

    ――Not really, my dear．You’d better stay at home for          day．

A．any                        B．the other            C．another                   D．other