17、Now satellites are  1  to forecast（预报）the weather. They are in space, and they can    2  any part of the world．The satellites take pictures of the atmosphere（大气）， 3 this is where the weather forms（形成）. They send these  4  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 5    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  6 . Perhaps they may find that the clouds have changed during the last few hours. This may mean that the    7    on the ground may soon change, too. In their next weather forecast, the meteorologists can say this.

So the weather satellites are a great    8    to the meteorologists.    9 __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     10    forecast the weather for a week or more ahead（提前）.

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

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

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

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

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

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

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

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

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

10．A．can           B．be             C．be able to            D．could

16、根据下面的对话情景，在每个空白处填上一个适当的句子，使对话的意义连贯、完整。

A：Are you free this weekend?

B：1___________________________________________

A：Let’s go to Beijing Zoo!

B：2____________________________

A：Because I hear eight pandas have just arrived there.

B：Really? 3______________________________________

A：They’re from Sichuan, and they will welcome the friends all over the world during the Beijing Olympic Games.

B：That’s great! 4____________________________________

A：I also hear the eight pandas like to eat apples. Why not take some apples?

B：5_________________.  Can’t you see “No Feeding” in the zoo?

A：Sorry, I forgot it. Well, remember to take a camera.

B：OK!

15、--- 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

14、The number of students who _____________ the English club ______20.

A．take part in, is       B．join, are       C．take part in, are          D．join, is

13、---- Could you please tell Jim that I will call him later?

---- Sure. I’ll tell him when he __________.

A．comes          B．came         C．has come           D．will come

12、They waited and waited for something _________ to happen.

A．excite            B．excited             C．exciting              D．to excite

11、Can you tell me __________ you are going to do next week?

A．if        B．what        C．how         D．where 

10、China is one of ____________ countries in the world．

A．old        B．the older        C．oldest          D．the oldest

9、---- Did you give Tom a phone call?

---- Yes, I did．But nobody ____________.

A．answer       B．answered       C．will answer          D．had answered

8、---- ____ have you stayed in New York? 

---- For about two weeks.

A．How soon          B．How often         C．How long             D．How far