C. is appreciated by California University
D.will be successful in two and a half years
37.Which is NOT true about Hos study?
A. 20 patients were involved in the study
B. The patients have used several anti-HIV drugs
C. The patients have been treated for up to 18months
D. 16 patients withdrew from the experiment
38.By saying Bear in mind undetectable does not equal absent .Ho means
A. AIDS virus may exist in the blood without being detected
B. AIDS virus is undetectable in the blood.
C. No AIDS virus can be detected in the blood.
D. No virus found in the blood means no AIDS.
39. How do we prove that the drugs have wiped out the remaining viruses?
A. By using up all the drugs at once
B. By waiting for the virus to die slowly
C. By analyzing the treatment record thoroughly
D. By stopping the drugs and see if the virus comes back
40. Other scientists are looking at experiments that are similar in that they are
A. the size of the experiment
B. the cost of the experiment
C. the time the experiment takes
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