What is the most important suggestion given by the man?
A.Don't smoke strong cigarettes.
B.Don't smoke so many cigarettes.
C.Don't breathe the smoke in.
D.Don't smoke all the cigarette.
第1题
细胞内参与hnRNA剪切、转运的RNA主要是
A.snRNA
B.snoRNA
C.tRNA
D.rRNA
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