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【简答题】
Watson与Crick提出的右手双螺旋结构 模型表明, DNA 分子是由两条 反向 平行多核苷酸链构成的右手双螺旋结构;主链(磷酸与脱氧核糖)在螺旋外侧, 层叠于螺旋内侧,并与纵轴垂直,一螺旋包含 对核苷酸,螺距为 3.4 nm , 和 维系 DNA 双螺旋的稳定。
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【单选题】Translate the following Chinese sentences into English with the help of the words or phrases given in brackets. 他实现了自己成为一名歌手的愿望。(come true)
A.
His wish to become a singer has come true.
B.
His wish to make a singer come true.
【简答题】他实现了自己成为一名歌手的愿望。(come true) His wish to ____________________________________.
【单选题】他实现了自己成为一名歌手的愿望。( come true ) His wish ________________________________.
A.
to become a singer has come true
B.
become singer has come true
【单选题】他实现了自己成为一名歌手的愿望。( come true ) His wish to ________________________________.
A.
to become a singer has come true
B.
become a singer has come true
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