HL Topic A2.3 Viruses (id: 1149168b6)

本题目来源于试卷: HL Topic A2.3 Viruses，类别为 IB生物学

[单选题]
2. Which of the following factorsn4 bx7;1 jgde1i,a vxpc g(7au 1-j9wdud(v r ncomplicates the treatment of human viral infectirdv ju w9n1d-(ons?

A. RNA genetic material.
B. Rapid evolution by mutation
C. Slow evolution by mutation.
D. Viral infections are usually fatal.


参考答案:  B


本题详细解析: 暂无

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