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王老师:19139051760(拨打)
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第1题

沥青混合料所用粗集料优先采用酸性集料拌合。
·正确
· 错误
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第2题

They made a great effort to prepare the exhibition, ( ) to achieve a big success.
· hoped
· hoping
· to hope
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第3题

I have beelooking for a job ( ) I left school six months ago.
· for
· since
· as
· When
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第4题

Hardly had I got to the classroom ( ) the class began.
· after
· before
· when
· Then
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