學位英語考試模擬試題精選：詞匯語法98
Great as Newton was, many of his ideas _____ today and are being modified by the work of scientists of our time.
A) are to challenge
B) may be challenged
C) have been challenged
D) are challenging
答案為“C”。句意為“盡管牛頓很偉大，他的許多思想今天受到挑戰，并正在為現代科學所修正。”
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