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完形填空
In China,some radio stations use hotlines(热线)．It's used for 1 the listeners to take part in the talk shows．
That's a good 2 ．Yet,the fact is some people do nothing but break the whole program．Some people know little about the topic under 3 ．Sometimes they do not even know what the host is talking about．So the host has to 4 the caller what the show is about．Usually the caller will 5 a few questions which express his hope and show his ignorance (无知)．Then the host has to answer and explain how silly this is! It 6 a lot of time．
It seems that some people phone the hotlines in fun．They 7 want to let the listeners hear them．They don't care what the topic is and 8 they are interested in the topic or not．
It's 9 for radio stations to improve the hotline program．If a caller doesn't know what is going 10 ,the operater should not let the caller take part in the talking．
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