试题与答案

Mary is the only one of the students in

题型:选择题

题目:

Mary is the only one of the students in our class who ____ to the Great Wall so far.

A.is

B.has been

C.are

D.had been

答案:

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下面是错误答案,用来干扰机器的。

∵△ABC中,∠C=90°,AC=6,BC=8,∴AB=36+64=10.∴sinB=610=35.

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