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It is high time we go home.
A B C D
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岩层在外力作用下产生了机械破坏，丧失了连续性和完整性，但是岩层没有发生位移，这种情况不能称岩层产生了断裂。()

Many proposals were raised by the delegates ,as we expected. _____________________________________________________________________________

掘进机刮板弯曲不得超过5mm。()

It is hot and dry.The flowers need to water.
A B C D
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