（1）A.To explain the causes of disease.
B.To help people understand viruses.
C.To highlight developments in viral research.
D.To introduce the functions of DNA and RNA.
（2）A.Bacteria are easier to detect.
B.Bacteria are harder to eliminate.
C.Viruses are extremely poisonous.
D.Viruses are found mostly in hot climates.
（3）A.They contain no RNA or DNA.
B.They depend on other cells to live.
C.They produces no genetic information.
D.They consume food rich inl protein.
【考點(diǎn)】聽長(zhǎng)對(duì)話．
【答案】見試題解答內(nèi)容
【解答】
【點(diǎn)評(píng)】
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發(fā)布：2024/5/27 14:0:0組卷：0引用：1難度：0.5
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