题目内容
Great changes _________ in many fields since China was open to the whole world.
A. have taken place B. took place
C. have been taken place D. were taking place
A
【解析】
试题分析:考查时态和语态。句意:自从中国对全世界开放以来,许多领域发生了巨大变化。take place发生、举行,没有被动语态,题干中的since从句标志主句必须用现在完成时,故A正确。
考点:考查时态和语态
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