Scientists ______ SARS for several months before a major discovery was made in the field.
发布时间:2021-08-03
A.had been studying
B.have been studying
C.have studied
D.are studying
试卷相关题目
- 1He is _______ here as he was at home.
A.almost as happy
B.as happy almost
C.as almost happy
D.almost happy as
开始考试点击查看答案 - 2There has to be more original Asian thinking _____ Asia wants to take its rightful place in the world.
A.providing
B.supposed
C.considering
D.given
开始考试点击查看答案 - 3Does ______ matter if he can't arrive here on time?
A.this
B.that
C.he
D.it
开始考试点击查看答案 - 4In China today women ________ 40% of the workforce, and nearly half of the others with children are in paid work.
A.build up
B.hold on
C.make up
D.stand for
开始考试点击查看答案 - 5They are all very clever, but _______of them could work the problem out.
A.any
B.some
C.none
D.neither
开始考试点击查看答案 - 6The two tables are of the same shape but the one made of steel costs more than ________ made of wood.
A.that
B.those
C.one
D.it
开始考试点击查看答案 - 7The prisoner had little difficulty in ______ from the police.
A.getting out
B.getting on
C.getting away
D.getting of
开始考试点击查看答案 - 8Before falling asleep, Helen always ______ the day's happenings.
A.reviews
B.restarts
C.requests
D.reminds
开始考试点击查看答案 - 9A few _____ looked at him curiously when he suddenly stopped and burst out crying.
A.passers-by
B.passer-bys
C.passers-bys
D.passer-by
开始考试点击查看答案 - 10The skirt is too big for me. I wish I _______ it last Sunday.
A.wouldn't buy
B.hasn't bought
C.didn't buy
D.hadn't
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