WiththefastdevelopmentofcomputerandInternettechnologie...
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问题详情:
With the fast development of computer and Internet technologies, traditional printed books ______ by the growing popularity of online reading of e-books.
A. are challenged B. have challenged
C. are being challenged D. have been challenged
【回答】
C
知识点:现在进行时及其被动式
题型:选择题
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