完型填空
In China , some radio stations use hotlines(热线)．It's used for        the listeners to take part in the talk shows．
That's a good        ．However, the fact is some people do nothing but break the whole program．Some people know little about the topic under       ．Sometimes they do not even know what the host（主持人） is talking about．So the host has to      the caller what the show is about．Usually the caller will        a few questions which express his hope and show his ignorance(无知)．Then the host has to answer and explain how silly（愚蠢的）this is ! It         a lot of time．
It seems that some people phone the hotlines for fun．They        want to let listeners hear them．They don't care what the topic is and       they themselves are interested in the topic or not．Silly they appear to be．
It's         for radio stations to improve the hotline programs．If a caller doesn't know what is going       , the operator should not let the caller take part in the talking．
A．stopping            B．laughing                C．encouraging
A．lesson             B．idea                    C. medicine
A. discussion          B. meeting                C. party
A. make               B. teach                  C. tell
A. ask                 B. read                   C. write
A. saves              B. wastes                  C. brings
A. hardly              B. just                    C. never
A. what               B. where                  C. whether
A. funny              B. interesting            C. necessary
A. on                B. off                    C.away