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Momma, in this autobiographical account, was Marguerite’s mother.()

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Before Sanders enrolled in Yale Law School, Watts was already a topic for discussion on the campus.()

In Marguerite’s mind, Mrs. Flowers was a god-like figure.()

The hero boy in the Polar Express is very lonely and disliked by his friends.()

下列有关RNA的叙述,正确的是

A. RNA分子不含双螺旋结构
B. rRNA是分子量最小的RNA
C. 胸腺嘧啶是BNA的特有碱基
D. rRNA参与核糖体的组成
E. tRNA是蛋白质生物合成的直接模板

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