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题型：单选题
Evidence obtained from observation and experiment is often used to ______ a scientific theory.
- A.
confirm
- B.
confine
- C.
conform
- D.
conceive
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题型：单选题
It was necessary to _____ the factory building as the company was doing more and more business.
- A.
extend
- B.
increase
- C.
lengthen
- D.
magnify
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题型：单选题
Because of the strong sun Mrs. William's new dining room curtains _______ from dark blue to gray within a year.
- A.
faded
- B.
fainted
- C.
paled
- D.
diminished
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题型：单选题
_______________ while writing, he locked himself in his study.
- A.
Not to interrupt
- B.
Not being interrupted
- C.
Not to be interrupted
- D.
Being not interrupted
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题型：单选题
In no country other than Britain, it has been said, ________ experience four seasons in the course of a single day.
- A.
people can
- B.
you can
- C.
can it
- D.
can one
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题型：单选题
The further falling of the stock market as reported today has _______ a fresh wave of selling.
- A.
given off
- B.
set off
- C.
put off
- D.
got off
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题型：单选题
With a long report ______, I have to work really hard this week.
- A.
to write
- B.
written
- C.
writing
- D.
to be written
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题型：单选题
Fans still ___ Michael Jordan though he doesn’t fight for the Chicago Bulls any more.
- A.
look down on
- B.
look up
- C.
look up to
- D.
look on to
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题型：单选题
Little________what you said. I wish you had repeated it!
- A.
did I understand
- B.
I understood
- C.
I did understand
- D.
have I understood
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题型：单选题
The Time Traveler stops 30 million years into the future and experiences a future time _____ the sun no longer shines brightly.
- A.
where
- B.
when
- C.
which
- D.
and
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