A. The proportion of condom use in homosexual sex is 17? 60%
B. Average number of students' sexual partners: 4? 5 people, lower than the general MSM population (correct answer: 9? 10 person)
The average infection rate of C.C.HIV is 4.4%, which is higher than the general population in China and lower than the general MSM population. It is higher in economically developed areas and increases with the increase of years.
D.MSM students have less knowledge about HIV, and the efficiency of condom decision-making is low, so they are more likely to have unsafe sex.
Correct answer: ABCD