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更新 2022-09-03
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挑错有奖

With the help of high technology, many new substances（物质）______in the past years.

A．discovered

B．have discovered

C．had been discovered

D．have been discovered

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相关试题

I can guess you were in a hurry. You your sweater inside out.

A．had worn

B．wore

C．were wearing

D．are wearing

题型：未知
难度：未知

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Frequently, single—parent children some of the function that the absent adult in the house would have served .

A．take off

B．take after

C．take in

D．take on

题型：未知
难度：未知

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Anyone who has spent time with children is aware of the difference in the way the boys and girls response tosituations .

A．likely

B．alike

C．same

D．similar

题型：未知
难度：未知

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The waters of the lake were so that it looked like glass .

A．silent

B．calm

C．still

D．quiet

题型：未知
难度：未知

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The way he did it was different we were used to .

A．in which

B．in what

C．from what

D．from which

题型：未知
难度：未知

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