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【单选题】
AAUAAA是A.
启动子的辨认序列
B.
真核生物的顺式作用元件
C.
真核生物的反式作用因子
D.
真核生物转录加尾修饰点
E.
线粒体的起始密码序列
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举一反三
【单选题】We are fortunate ______ several descriptive papers have been published which give adequate background and experimental results.
A.
in which
B.
so that
C.
as if
D.
in that
【单选题】Several of the off-shore islands are ______ , now that we have a motor boat.
A.
available
B.
accessible
C.
convenient
D.
achievable
【单选题】We have phoned her several times, but unfortunately she is still out of _________.
A.
order
B.
control
C.
sight
D.
reach
【简答题】阅读程序,写出运行结果。
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