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【单选题】
真核生物转录终止需要A.
Rho因子
B.
释放因子
C.
核蛋白体释放因子
D.
需茎环结构和随后的polyU
E.
需AATAAA的转录终止修饰点
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【单选题】Rich Kids{Page} Life really should be one long journey of joy for children horn with a world of wealth at their feet. Internationally famous child doctor Robert Coles is the world's top expert on the ...
A.
there are fewer problems in the rich family than the poor family.
B.
rich children live a life of separation from the world．
C.
rich children usually enjoy more love than poor children,
D.
the quality of rich children's family life may not be high.
【单选题】The new house really wasn't _____ all the expense involved. [ ]
A.
worthy
B.
worthwhile
C.
worth of
D.
worth
【单选题】What does the man think of the population problem?
A.
It is not so serious.
B.
It is really worrying.
C.
Something has been done with it.
【简答题】When a teacher says 'The exam this year is going to be really difficult' , the sentence would have an______force.（清华2001研)
【简答题】下图显示该闭塞分区内的信号机是_________亮。说明该闭塞分区内_______车占用。
【单选题】We really appreciate our wo ki ng environment, in there was open, friendly workplace communication.
A.
how
B.
what
C.
whom
D.
which
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