The first use of atomic weapons was in 1945. and their power _____ increased enormously ever since.
A.is
B.was
C.has been
D.had been
试卷相关题目
- 1More than one teacher _____ told him it is important that he learn English well if he _____ aboard.
A.have; shall go
B.has; want to go
C.has; wants to go
D.had; will go
开始考试点击查看答案 - 2My grandma_____in the country. Now she_____in the city.
A.used to live, lives
B.used to living, lived
C.uses to live, is living
D.was used to live, lives
开始考试点击查看答案 - 3The company _______ a rise in salary for ages but nothing has happened yet.
A.has been promising
B.had promised
C.promised
D.Promises
开始考试点击查看答案 - 4Someone________his car in front of my house and it is blocking my driveway.
A.has parked
B.is parking
C.parked
D.had parked
开始考试点击查看答案 - 5For many seniors in some universities, the final year can be an unpleasant experience, ______that ends the campus romance.
A.which
B./
C.or
D.one
开始考试点击查看答案 - 6Mr. Li arrived at the Wuguang train station twenty minutes ago, but the train to Guangzhou________yet.
A.hadn't come
B.won't come
C.hasn't come
D.didn't come
开始考试点击查看答案 - 7It's reported that by the end of this month the output of cement in the factory _____ by about 10%.
A.will have risen
B.has risen
C.has been risen
D.will be rising
开始考试点击查看答案 - 8Sound travels in the same way as light _____.
A.travel
B.has done
C.traveled
D.does
开始考试点击查看答案 - 9Great changes ______ in the city, and a lot of new buildings ______.
A.have been taken place; have been set up
B.have taken place; have been set up
C.have taken place; have set up
D.were taken place; were set up
开始考试点击查看答案 - 10The first thing she did _____ up to her trainer and thanked her.
A.was go
B.was going
C.and went
D.go
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