选择题:_____, all machines are combinations of simpler parts such as the lever, the pul

题目内容:

_____, all machines are combinations of simpler parts such as the lever, the pulley, and the inclined plane.

A.However complicated are they

B.However difficult they are

C.Whether they are old or new

D.No matter how complex they are

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The committee meetings, _____ always dominated by the same people, _____ slow-mo

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Government reports, examination compositions, legal documents and most business letters are the main

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She ought to stop working.She has a headache because she( )too long.

She ought to stop working.She has a headache because she( )too long.

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The suspect made a pretty( )description of his process of committing a crime in

The suspect made a pretty( )description of his process of committing a crime in his confession.

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We want such materials _____ can bear high temperature and pressure.

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