（    ）34．A．a letter     B．telephone        C．money      D．a message

（    ）33．A．buy       B．need             C．find         D．use   

（    ）32．A．make      B．buy              C．carry        D．sell

（    ）31．A．chemistry B．geography      C．physics    D．biology

There are four kinds of satellites．The first kind of satellite studies the  31  of the earth．They are used to  32  maps．They also help countries to see where they may  33  oil or gold．

The second kind guides ships and planes．A ship or plane can send  34 to the satellite，and the satellite can find out where it is．

The third kind studies  35  ．These satellites  36  clouds and strong winds moving across the earth．They warn countries when very  37  weather is coming．They take photos of the earth from thousands of kilometers above it and  38   the photos to a weather station on the ground．

The fourth kind is used for communication．Telephone calls  39  countries can be sent by these satellites．Some can carry hundreds of calls at one time．The calls are sent to the satellite，then the satellite sends them to a station in the country Which is being phoned. These satellites  40  carry television pictures．They can receive and send about eight programs at a time．How amazing!  

（    ）30．All the readers were________ by the________ story．   

A．moving；moved                     B．moving；moving

C．moved；moved                   D．moved；moving     

（    ）29．一Is Jim playing video games．

一No，he’s ________ his homework now．

A．forced to do         B．made do            C．forced doing        D．made doing

（    ）28．You’d better________ your hands to help him when someone is in trouble．

A．put away             B．put out                C．take out               D．put up

（     ）27．________ the students in this school is about three thousand，and________ of them are girls．

A．A number of；two third          B．The number of；two thirds

C．A number of；two thirds              D．The number of；two third   

（  ）26．一This camera is very similar________ that one．

一Yes．I have some trouble________ their differences．    

A．as；telling           B．with；to tell        C．to；to tell            D．to；telling