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Forests ________ and burned at such a speed that they will disappear from the earth in the future.

A．cut B．a(chǎn)re cut C．a(chǎn)re being cut D．had been cut

 

C

【解析】由“at such a speed”意即“at such a speed now”可知，cut應(yīng)是現(xiàn)在正在進(jìn)行的動(dòng)作。

 

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