Though Einstein was a great scientist, many of his ideas______today and are bein

游客2025-03-20 35

问题 Though Einstein was a great scientist, many of his ideas______today and are being modified by the work of today’s scientists.

选项 A、are to challenge
B、are challenging
C、may be challenged
D、have been challenged

答案 D

解析本题综合考查动词的时态和语态。根据题意，尽管爱因斯坦是一位伟大的科学家，他的许多思想现在已经受到挑战并正在被当今的科学家的工作修正着。"思想受到挑战"应该用被动语态，另外并列的谓语are being modified说明"受到挑战"应该在此之前；所以用现在完成时的被动语态。

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