【正确答案】 B

【答案解析】[听力原文]
   Just as he was busy preparing his thesis defense graduate student Li Wei (pseudonym) received confirmation that he was HIV positive.
   After he got the results of his medical exam back, Li tried to call the guy, but no one answered. Out of curiosity, Li searched for the guy's phone number, but the result shocked him: Numerous results linked the number with that of a male sex worker. Li felt furious and helpless at the same time. "I don't have any detailed information to report the police."
   The only thing he could do was text the guy a message saying: "You totally ruined my life. Please conduct yourself better so you don't ruin anyone else's life again." Li's story isn't some isolated incident. In fact, cases of HIV transmission between gay men are on the rise every year.
   The number of high school to college students in China that are HIV positive has risen by 35 percent every year over the past five year, Wu Zunyou, the director of the National Center for AIDS/STD Control and Prevention, told the Beijing News.
   Sex is the main means of transmission among HIV positive teenagers, among which transmission between males makes up the majority of cases.
   According to a survey conducted by Beijing News, 90 percent of college students have a basic knowledge of HIV, yet know little about how to protect themselves properly from the disease.
   Many students with HIV contract the disease right after their transition from high school to university. Young high school students new to being on their own end up having unsafe sex with those outside the campus and from there the virus spreads to universities.
   What happened to Li Wei?
选项A是他考试不及格，选项B是他感染了艾滋病，选项C是他不能毕业，选项D是他失恋了。由选项可知，该问应与这位男士的遭遇有关。
   短文开头提到，正在研究生李伟忙着准备其论文答辩之时，他收到了自己艾滋病病毒测试呈阳性的结果。故选B。