.---- What’s your tomorrow’s speech______?----Nuclear pollution,a hot topic.A.at B.on C.in D.for说明理由

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.----What’syourtomorrow’sspeech______?----Nuclearpollution,ahottopic.A.atB.onC.inD.for说明理由.----What’

.---- What’s your tomorrow’s speech______?----Nuclear pollution,a hot topic.A.at B.on C.in D.for说明理由
.---- What’s your tomorrow’s speech______?----Nuclear pollution,a hot topic.
A.at B.on C.in D.for
说明理由

.---- What’s your tomorrow’s speech______?----Nuclear pollution,a hot topic.A.at B.on C.in D.for说明理由
B. on :关于
全句译为：
你明天是做（关于）什么的演讲?核污染,一个热门话题
有关学术性方面的内容都用on
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http://zhidao.baidu.com/question/53650795.html
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B, a speech on nuclear pollution. 关于核污染的演讲。

B,a speech on/about sth.关于什么的演讲

what's your favourite game to play? What's your approach to learning English? what's your aim to go to school翻译 What’s your d（ ——To become a doctor. what's your adventage to be a tour guide? what's your purpose of going to college What`s your friend going to do next week. Needless to say everything what's your meaning , what's your mother? what's your mother what’s your major? what s your favourite What’s your name? What's your name? WHAT'S YOUR AGE? what's your what's your idea? what‘s your name