单选题:关于中学化学教学中多媒体的使用,下列选项不恰当的是( )。

题目内容:
关于中学化学教学中多媒体的使用,下列选项不恰当的是( )。 A.演示物质的微观结构
B.播放危险性试验的录像
C.代替演示实验和探究实验
D.模拟化学变化微观的动态过程
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答案解析:

甲公司销售商品一批,商品的销售价款为2 000元,商业折扣10%,增值税税率为17%,现金折扣条件为2/10,1/20,

甲公司销售商品一批,商品的销售价款为2 000元,商业折扣10%,增值税税率为17%,现金折扣条件为2/10,1/20,N/30。甲公司销售商品时为对方代垫运费

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If a teacher asks students to list as many ways as they can to tell someone to

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Which of the following activities is the most suitable for g

Which of the following activities is the most suitable for group work?A.Guessing

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