根据短文内容，从短文后的选项中选出能够填入空白处的最佳选项，选项有两个为多余项。
In China some radio broadcasting station use hotline to encourage the listeners to take part in the talk shows.
__小题1:__Yes,the fact is some people do nothing but break the whole programme.__小题2:__Sometimes they do not even know what the host is talking about. So the host has to tell the caller what the show is about. Usually the caller will ask questions which express his hope and show his ignorance. The host has to answer and explain ---how silly this is.! __小题3: ___It seems that some people phone the hotlines in fun. __小题4:__ They don’t care what the topic is, whether they themselves are interested in the topic or how silly they appear to be.
__小题5:___ In my opinion, if a caller does not know what is going on ,the operator should not let the caller take part in it.
A．Radio broadcasting stations use hotlines in a wrong way
B．That is a good idea
C．It waste a lot of time
D．Some people do not know what the show is aboutE.Some people know little about the topic under discussion
F.They just want to let the listeners hear them
G.It is necessary for radio broadcasting to improve the hotline programmes
小题1:B
小题2:E
小题3:C
小题4:F
小题5:G
小题1:从第一段第一句谈到广播电台鼓励听众通过热线来参与谈话节目，这想法是好的，所以选B
小题2:从下文Sometimes they do not even know what the host is talking about可知一些参与者对讨论的话题内容了解不多，甚至不知主持人谈论什么。
小题3:从第三段可知打电话的人对讨论的话题内容了解不多，甚至不知主持人谈论什么，往往问些表达他们的希望和不屑的问题，主持人不得不解释和回答，所以是浪费时间。
小题4:联系上下文可知打电话的人纯粹是为了好玩，不关心话题内容是什么，他们只是让听众听到他们的声音。
小题5:联系上下文，电台节目中听众通过热线来参与谈话有待提高。
点评：本文论述了电台节目中听众通过热线来参与谈话，但打电话的人纯粹是为了好玩，不关心话题内容是什么，他们只是让听众听到他们的声音，因而作者认为热线节目有待提高。