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【单选题】
关于mRNA的说法错误的是( )A.
是遗传信息的传递者
B.
种类多，分子量大小不一
C.
5'端有帽子结构
D.
hnRNA分子量比成熟mRNA的要小
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举一反三
【单选题】They just ______the entrance, when a well-dressed man approached them.
A.
be unique to
B.
in bulk
C.
be accessible to
D.
make compensation for
E.
set foot in
F.
narrow down
【简答题】触发器能够实现数据的业务规则和__________。
【单选题】A well-dressed man enforced a famous jewelry shop. He explained that he wished to buy a pearl for his wife's birthday. The price didn't matter. Since business had been very good for him that year. Aft...
A.
His wife
B.
his mother-in –law
C.
his own mother
D.
his own mother
E.
himself
【单选题】A well-dressed man enforced a famous jewelry shop. He explained that he wished to buy a pearl for his wife's birthday. The price didn't matter. Since business had been very good for him that year. Aft...
A.
exactly the same size as the black one
B.
exactly the same quality as the black one
C.
worth no more than $ 25,000
D.
exactly as big and nice as the black one
E.
exactly new one
【简答题】结合目前电子商务发展现状,谈谈你对网络交易平台规制的看法。
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