However,attimesthisbalanceinna

However, at times this balance in nature is disturbed, _ ___ a number of possibly unforeseen effects.

A．lying in

B．calling in

C．taking in

D．resulting in

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相关试题

Only when he had done it ______ that he had made a mistake.

A．he then realized

B．did he realize

C．before

D．he realized

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---Would you mind if I opened the door?
--- ________________.

A．Yes, go ahead

B．No, go ahead

C．Yes, please

D．Never mind

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It is demanded that you ____ at six.

A．will arrive

B．arrive

C．arrived

D．would arrive

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At present，there is little doubt ________ short message plays an increasingly important role in our lives．

A．whether

B．if

C．that

D．which

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— Are you a teacher?
　 — No, but I ______. I worked in a middle school for three years.

A．am

B．will

C．do

D．was

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