All the doctors in the hospital insisted that he ____ badly wounded and that he ____ at once.

A. should be; be operated on　　　　 B. were; must be operated on

C. was; should be operated　　　　　 D. was; be operated on

 

D

insist后的從句謂語(yǔ)所表示的動(dòng)作尚未發(fā)生，或尚未成為事實(shí)，則用虛擬語(yǔ)氣；若該謂語(yǔ)動(dòng)詞所表示的動(dòng)作已經(jīng)發(fā)生，或已經(jīng)成為事實(shí)，則要用陳述語(yǔ)氣。分析上題的句意，可知只有選D最合適。

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Today just as technology changed the face of industry, farms have experienced an “agricultural revolution”. On the farm of today, machines provide almost all the power.

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