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【多选题】
在锥虫的线粒体中，RNA编辑（）。A.
被广泛用于改变许多mRNA的编码能力B．只在每个mRNA上改变单个核苷酸
B.
只加上G和缺失G
C.
由向导RNA指导进行，其中向导RNA与编辑前mRNA上被编辑区域区域相邻的碱基互补
D.
所用的向导RNA上有一小段区域与被编辑的mRNA互补
E.
进行的方向与转录方向相同
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举一反三
【简答题】Politeness towards women is less observed today than it used to be.
【简答题】Being thoughtful of and enthusiastic towards others IS the essence (gist, kernel, quintessence) of politeness.
【单选题】What can we learn from this passage?
A.
Men ought to make gestures of politeness towards women.
B.
Women ought to make gestures of politeness towards men.
C.
Women have achieved equality with men.
D.
Men are beginning to treat women as equal human beings.
【单选题】Politeness towards women and old people is based on ______.
A.
the feeling that they are in need of protection
B.
the fact that they are physically weak
C.
their actual need
D.
the feeling that they are more experienced
【单选题】The author's attitude towards road politeness seems to be ______ .
A.
suspicious
B.
indifferent
C.
ironical
D.
objective
【单选题】What is replacing men' s gestures of politeness?
A.
More graceful politeness towards women.
B.
More consideration for women' s needs and feelings.
C.
More equal treatment to women in every respect.
D.
More impolite gestures of social behavior. to women.
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