It was only after some progress ______ in the use and development of electric cu

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问题 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.

选项 A、had been made
B、would have been made
C、has been made
D、was made

答案 A

解析被动语态。make progress in．．．的被动语态是progress is made in...。

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It was only after some progress ______ in the use and development of electric cu

Itwasonlyaftersomeprogress______intheuseanddevelopmentofelectriccu

Modestymakesoneprogress______conceitmakesonelagbehind.A、whenB、whereas

Cooperationistheonlysafeguardwehaveagainstthedevelopmentofneurot

Theinventionofelectricitymadegreatcontributiontocivilization______whic

Withthedevelopmentoftheglobaleconomy,manycompaniesengageinawor

Withthedevelopmentoftheglobaleconomy,manycompaniesengageinawor

Withthedevelopmentoftheglobaleconomy,manycompaniesengageinawor

Withthedevelopmentoftheglobaleconomy,manycompaniesengageinawor

Withthedevelopmentoftheglobaleconomy,manycompaniesengageinawor

Withthedevelopmentoftheglobaleconomy,manycompaniesengageinawor

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