44．A．Before         B．After          C．Since                D．If

43．A．report         B．luck            C．helpful                     D．help

42．A．clouds         B．weather        C．pictures              D．trees

41．A．it             B．one            C．ones                D．them

40．A．that            B．for            C．where               D．how

39．A．satellites        B．pictures        C．weather              D．space

38．A．so             B．because         C．even                D．and

37．A．reach           B．arrive          C．get                  D．go

36．A．help            B．to help         C．helped               D．helping

35．--- Look at the sign on the right.        

---- Oh, smoking ____ here.

A．doesn’t allow        B．isn’t allowed       C．didn’t allow   D．wasn’t allowed

先通读短文，掌握其大意，然后从A、B、C、D四个选项中选出一个可以填入相应空白处的最佳答案，并将其标号填入题前括号内。

Now satellites are  36  to forecast（预报）the weather. They are in space, and they can    37  any part of the world．The satellites take pictures of the atmosphere（大气）， 38 this is where the weather forms（形成）. They send these  39  to the weather stations. So meteorologists（气象学家）can see the weather of any part of the world．From the pictures, the scientists can often say 40   the weather will change.

Today, nearly five hundred weather stations in sixty countries receive satellite pictures. When they receive new pictures, the meteorologists compare them with earlier  41 . Perhaps they may find that the clouds have changed during the last few hours. This may mean that the    42    on the ground may soon change, too. In their next weather forecast, the meteorologists can say this.

So the weather satellites are a great    43    to the meteorologists.    44 __satellites were invented, the scientists could forecast the weather for about 24 or 48 hours. Now they can make good forecasts for three or five days. Soon, perhaps, they may     45    forecast the weather for a week or more ahead（提前）.