In zones where earthquakes are known to occur, ______ construction techniques ca

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In zones where earthquakes are known to occur, ______ construction techniques can significantly reduce the effects of seismic wave.

A．to improve

B．improving

C．improved

D．being improving

答案

解析

考查非谓语动词。此处improved 作construction techniques的定语，建造技巧和提高之间是被动关系。
句意为在一些地震频发的地区，改良的建造技巧可以显著地嫌少地震的影响、

举一反三

_____ her mother after being separated for 20 years, she couldn’t help, even though she tried not to, ______.

A．Seen, crying

B．To see, cry

C．Seeing , crying

D．Having seen, crying

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________ many times, he finally understood it.

A．Told

B．Telling

C．Having told

D．Been told

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Look over there—there’s a very long, winding path _________ to the house.

A．leading

B．leads

C．led

D．to lead

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_________ with the size of the whole earth, the biggest ocean does not seem big at all.

A．compare	B．when comparing
C．comparing	D．when compared

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Mrs. White found her husband ________by letters and papers and________ very worried.

A．surrounding ; looked	B．surrounded ; looked
C．surrounding; looking	D．surrounded ; looking

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