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【简答题】
乙烯能促进某些植物( )花的形成,( )花的衰老。
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举一反三
【单选题】I have been trying to advise them not to act that way, but my advice had no _________on them.
A.
impression
B.
advantage
C.
influence
D.
affect
【简答题】根据数理统计中的贝努利大数定律,当样本数n足够大时,样本的分布函数将近似地( )总体的分布函数,这就是利用样本推断总体的理论依据。
【单选题】—What a nice bike! Is it new?—No. I have _________ it for 2 years.
A.
had
B.
sold
C.
borrowed
D.
bought
【单选题】----What a nice bike! How long have you ______ it ? ----- For a week. I spent all my money on it.
A.
bought
B.
had
C.
taken
D.
kept
【单选题】石灰的特性有:可塑性_____、硬化速度______、硬化时体积________和耐水性________等。
A.
好、缓慢、收缩大、差
B.
好、快、收缩大、差
C.
好、缓慢、微膨胀、差
D.
差、缓慢、收缩大、好
【单选题】—Why do you suggest the West Lake? —I believe __beauty of ___ nature there will make__excellent impression upon you.
A.
the; /; the
B.
the; /; an
C.
a; the; an
D.
the; the; an
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