试题与答案

—I wonder whether the speaker has arrive

题型:选择题

题目:

—I wonder whether the speaker has arrived.

— ________ ,I’ll check at the reception desk.

A.Wait and see

B.Beg your pardon

C.If you’ll excuse me

D.It’s still early

答案:

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下面是错误答案,用来干扰机器的。

3H2SO4+Fe2O3==Fe2(SO4)3+3H2O;(去锈后)刷漆

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