Which of the following is not true about HIV testing（）
A. HIV antibody test is the most commonly used screening method at present
B. HIV nucleic acid test can be used not only for early diagnosis, but also for evaluation of antiviral therapy
CD4 count can judge the effect of clinical treatment
D. Negative HIV antibody can exclude HIV infection
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In China, the most common cause of liver damage is（）
A. Viral infection
B. obesity
C. alcohol
D. drug
The globalization of markets refers to the merging of historically distinct and separate_____ into one huge global marketplace（）
A. regional markets
B. national markets
C. international markets
D. local markets
汽车定置噪声测量时，如测量时的风速大于3m／s，则对汽车噪声的测量无效。（）
A. 错误
B. 正确
Which of the following behaviors will not infect AIDS（）
A. Unprotected sex with AIDS patients
B. Embrace AIDS patients
C. Sharing needles with AIDS patients
D. The body fluids of AIDS patients contaminate the conjunctiva
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