Great as Newton was, many of his ideas______ today and are being modified by the

游客2023-11-04 41

问题 Great as Newton was, many of his ideas______ today and are being modified by the work of scientists of our time.

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

答案 C

解析根据句意，所填空应使用被动语态，因此首先排除[A]和[D]。[B]may be challenged和后半句中的are being modified相矛盾，故答案为[C]。

转载请注明原文地址:http://tihaiku.com/zcyy/3157410.html

相关试题推荐

随机试题

最新回复(0)

Whichofthefollowingisnotcontainedinthegeneticallymodifiedmaize?[br]