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
查看答案
Why does HIV resistance against nevirapine build very quickly even when the drug is used
A. Because the drug is not strong enough to kill all of the HIV in the body.g. Because there may not be a susceptibility test before usingthe drug.
Because other drugs are not present to kill the virus particles that survive nevirapine.
C. Because there are too many mutations of HIV for nevirapine to deal with.
Some people believe that using a DNA fingerprint may not be so reliable because___________
A. the accuracy of DNA fingerprinting has been challenged
B. no private laboratory follows uniform. testing standards or quality controls
C. mistakes are possible when researchers explain the results of their tests
D. suspects may not have enough money to provide their own DNA to law-courts
When your brother looks exactly like you, your complete DNA may be___________
A. exactly like his
B. totally different from his
C. unique
D. lost
Some scholars did not believe___________
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