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
试卷相关题目
- 1About 71% of the earth's surface ______ covered with water, but 20% of the world population ______ have access to safe drinking water.
A.is; doesn't
B.are; don't
C.are; doesn't
D.is; don't
开始考试点击查看答案 - 2Do you know when the Great Wall _________?
A.was come into being
B.came into being
C.had come into being
D.had been come into being
开始考试点击查看答案 - 3Mr. Li is absent today. What do you consider ________ to him?
A.happens
B.is happened
C.happening
D.has happened
开始考试点击查看答案 - 4I go back to sleep when suddenly my bedroom became as bright as day.
A.was about to
B.was just to
C.would
D.was to
开始考试点击查看答案 - 5It is the only time in history that two Nobel Prizes to the same person.
A.have been given
B.had been given
C.have given
D.will give
开始考试点击查看答案 - 6Now, thanks to the government's quick reaction, thousands of children who would otherwise have died___________.
A.would be saved
B.are saved
C.had been saved
D.have been saved
开始考试点击查看答案 - 7don't think Japan is a pleasant place for us Chinese students,for I in that country for ten years.
A.stayed
B.have been staying
C.was staying
D.have stayed
开始考试点击查看答案 - 8He lifted the stone only _______ it dropped on his own feet.
A.have
B.had
C.having
D.to have
开始考试点击查看答案 - 9Would you please keep silent? The news that the milk contains a harmful chemical _________and I want to listen.
A.has been broadcast
B.is being broadcast
C.is broadcast
D.is broadcasting
开始考试点击查看答案 - 10Mum, I was wondering if you could lend me a few dollars until I______ on Friday.
A.get paid
B.got paid
C.have paid
D.had been paid
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