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王老师:19139051760(拨打)
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第1题

在钻孔施工开钻时,必须待钻头下到孔底工作平稳后,再逐渐增大压力。( )
·正确
·错误
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第2题

The student is good at English, ______ we all know. ( )
·because
·for
·since
·as
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第3题

By the time the course ends, _______ a lot about the British way of life.
·we have learned
·we are learning
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第4题

—I.ll come back tomorrow evening at nine. Cayou meet me at the airport —_________.
·All right
·All right. Nice to
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