题目内容

关于RNA的叙述,正确的是

A. 电泳时泳向负极
B. 通常以双链形式存在
C. 主要有mRNA、tRNA、rRNA三种
D. tRNA含量最多
E. 链内双螺旋以A-T、G-C互补

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to pass information, knowledge, etc. to other people

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