It was only after some progress ____ in the use and development of electric current that men began to realize the importance and possibilities of magnetism.A.was made B.would have been madeC.has been made D.had been made我 选 的 是 D.答 案 是
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It was only after some progress ____ in the use and development of electric current that men began to realize the importance and possibilities of magnetism.A.was made B.would have been madeC.has been made D.had been made我 选 的 是 D.答 案 是
It was only after some progress ____ in the use and development of electric current that men began to realize the importance and possibilities of magnetism.
A.was made B.would have been made
C.has been made D.had been made
我 选 的 是 D.答 案 是 A.
It was only after some progress ____ in the use and development of electric current that men began to realize the importance and possibilities of magnetism.A.was made B.would have been madeC.has been made D.had been made我 选 的 是 D.答 案 是
我也觉得应该选D.after引导的时间状语从句一般有三种用法:主将从现;前后都是过去式;还有就是主句过去时,从句用过去完成时.---这种情况是句中有刻意强调时间状语.这题目明显是个强调句,因此虽然答案是A,我还是保留意见.
选D,先有进步,再有意识到
只有在电流的应用和发展这两方面取得了进展后,人们才开始认识到磁力学的重要性。