题目
题型:同步题难度:来源:
B. had been discovered
C. has discovered
D. has been discovered
答案
核心考点
试题【If Newton lived today, he would be surprised by what in science and techno】;主要考察你对被动语态等知识点的理解。[详细]
举一反三
A. has nuned
B. had ruined
C. has been ruined
D. had been ruined
our time.
B. have been challenged
C.have questioned
D. have been questioning
A.has completed
B.have completed
C.have been completed
D.has been completed
B. haven"t decided
C. isn"t being decided
D. aren"t decided
B. have been marked
C. had marked
D. had been marked
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