If Newton lived today, he would be surprised by what _______ in science and technology.
A.had discovered
B.had been discovered
C.has discovered
D.has been discovered
试卷相关题目
- 1I insisted that a doctor _______ immediately.
A.has been sent for
B.sends for
C.be sent for
D.will be sent for
开始考试点击查看答案 - 2If their marketing plans succeed, they _____ their sales by 20 percent.
A.will increase
B.have been increasing
C.have increased
D.would be increasing
开始考试点击查看答案 - 3It's been years since I _____ myself so much.
A.enjoy
B.enjoyed
C.have enjoyed
D.had enjoyed
开始考试点击查看答案 - 4When I said someone cheated in the English exam, I ______ you.
A.wasn't referring to
B.had referred to
C.hasn't referred to
D.will refer to
开始考试点击查看答案 - 5---- How is your hometown after the earthquake for 2 years. -----Thanks to the government, the reconstruction work of schools and farm houses ________ and people are living a happy life.
A.have been completed
B.has completed
C.was completed
D.has been completed
开始考试点击查看答案 - 6The classroom is so dirty that it needs________ badly.
A.clean
B.to clean
C.being cleaned
D.cleaning
开始考试点击查看答案 - 7I'm not familiar with this place. It's the first time I _____ here, you know.
A.am
B.was
C.have been
D.had been
开始考试点击查看答案 - 8One third of the class _____ agreed to be volunteers to help the aged this vocation.
A.are
B.is
C.has
D.have
开始考试点击查看答案 - 9The United States _______one of the lowest smoking rates -25.5 percent of the population.
A.is
B.have
C.has
D.are
开始考试点击查看答案 - 10When the old man______to walk back to his house,the sun______itself behind the mountain.
A.was starting;hid
B.had started;had already hidden
C.had started;was hiding
D.started;had already hidden
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