25Hardly ( ) the classroom when the class began.
A. had he entered
B. he had entered
C. he entered
D. he was entered
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31He seems ( ) from this university.
A. graduating
B. being graduated
C. to graduate
D. to have graduated
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45We never dared to ask him a question, ( )?
A. did we
B. didn’t we
C. dared we
D. daredn’t we
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29I must be off now. It’s time I ( ) to school.
A. go
B. went
C. will go
D. am going
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8、设函数f( )在区间(0,1)内可导f＇( )>0,则在(0,1)内f( )( ).
A. 单调增加
B. 单调减少
C. 为常量
D. 既非单调,也非常量
解析：解析:由于f(x)在(0,1)内有f＇(x)>0,可知f(x)在(0,1)内单调增加,故应选A.
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21. The steel output of this year will be bigger than ( ) last year.
A. this of
B. the one
C. that of
D. those of
解析：解析:output 产量解析:指上文提到的用that或those。
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38Half of those books ( ) best-sellers.
A. is
B. are
C. am
D. was
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2. What is this noise? Tell me what ( ) here.
A. went on
B. goes on
C. is going on
D. will go on
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24. The new model costs twice ( ) last year＇s .
A. more than
B. as much as
C. as many as
D. than”as+原级+as"可以用来表示倍数。解析:The new model costs twice more than last year＇s.
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24( ), the children went to the park.
A. It was a fine day
B. Being a fine day
C. It being a fine day
D. Because the fine day
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