苗族青年男女恋爱婚姻比较自由，通过（）等社交活动自由对歌，恋

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问题多项选择题

苗族青年男女恋爱婚姻比较自由，通过（）等社交活动自由对歌，恋爱成婚。

A.丢包

B.游方

C.抛绣球

D.跳月

答案

参考答案：B, D

单项选择题

Why does the author mention fresh coffee in Paragraph 2

A．As an example of complex substances having not been duplicated satisfactorily.

B．Because the coffee fragrance is hard to produce.

C．To conclude the passage.

D．The smell of fresh coffee is inviting.

问答题简答题

简述绩效考核的混合模型比较适合应用于哪几种环境。