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【单选题】
下列关于核酸的叙述，正确的是（）。A.
组成DNA与RNA的元素不同
B.
DNA分子中嘌呤总数等于嘧啶总数
C.
组成RNA和DNA的碱基相同
D.
DNA分子的条链中碱基数目A=T，C=G
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举一反三
【简答题】combat interactive blessing disappointment notification annoyance omit perplexed You can ____________ the last two sentences in the report.
【判断题】If you have a problem with understanding, you can ask for clarification, resort to tactics, such summarizing or generalizing, omit or fabricate something.
A.
正确
B.
错误
【判断题】You can omit signatures at the bottom of an e-mail in an official situation as long as you have known well with each other.
A.
正确
B.
错误
【简答题】combat interactive blessing disappointment omit notification perplexed annoyance You can ______ the last two sentences in the report.
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