职称英语卫生类阅读理解原文模拟第9篇_职称英语阅读理解

　　2. Why does HIV resistance against nevirapine build very quickly even when the drug is used alone just once?

　　A Because the drug is not strong enough to kill all of the HIV in the body.

　　B Because there may not be a susceptibility test before using the drug.

　　C Because other drugs are not present to kill the virus particles that survive nevirapine.

　　D Because there are too many mutations of HIV for nevirapine to deal with.

　　3. When may a woman start her nevirapine-based treatment if she gets the single dose of nevirapine at delivery ?

　　A She may start nevirapine-based treatment soon after her delivery.

　　B She may start nevirapine-based treatment within six months after her delivery.

　　C She has to wait at least six months after that nevirapine exposure.

　　D She may wait several years so as to achieve the best effect.

　　4. We may learn from this passage that HIV resistance against nevirapine

　　A lasts only for about a half year and fades quickly.

　　B will last forever in a woman who took nevirapine.

　　C is a terrible drug that must be banned at once.

　　D is a problem too difficult to be solved.

　　5. Generally speaking, the authors attitude towards the use of nevirapine is

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