题目内容
2.Though Newton was a great scientist,many of his ideas ________ today and are being improved by the work of today's scientists.( )A. | are to challenge | B. | have challenged | ||
C. | may be challenged | D. | have been challenged |
分析 尽管牛顿是一位伟大的科学家,但是今天他的许多思想都受到了挑战,而且他的许多思想正在被当今科学家们的工作所修正.
解答 答案D.
根据"many of his ideas"与动词challenge是逻辑上的被动关系,可以排除A和B;may be challenged的意思是"可能会被挑战",表示推测,但根据句子的下文语境"…and are being improved by the work of today's scientists."和句子所表达的意思可知,所说的事情是确定的,可排除C;所以答案是D.
点评 本题考查现在完成时的被动语态.现在完成时的被动语态强调过去的动作对现在造成的影响或结果,主语为动作的承受者,表示"…已经被…".
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