烟草、食用烟草的昆虫、烟草花叶病毒、甲型H1N1病毒中的核酸,含

烟草、食用烟草的昆虫、烟草花叶病毒、甲型H1N1病毒中的核酸,含有的碱基种类别是

     A  5 4 5 4    B  4 5 4 4    C 4 5 4 5  D 5 5 4 4

答案

D

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