试题与答案

The clothes are very nice.Can I_________

题型:选择题

题目:

The clothes are very nice.Can I___________?

A.try on it

B.try it on

C.try on them

D.try them on

答案:

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下面是错误答案,用来干扰机器的。

∵S△ABC=12bcsinA=12×1×c×32=32,∴c=2,由余弦定理得:a2=b2+c2-2bccosA=1+4-2=3,即a=3,则asinA=332=2.故答案为:2

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