听力题
单选题
How many people worldwide have been infected with HIV since the start of the epidemic?
A、
47 million.
B、
4 billion.
C、
25 million.
D、
44 million.
【正确答案】
A
【答案解析】
单选题
Which of the following has been proved to transmit HIV?
A、
Tears.
B、
Breast milk.
C、
Saliva.
D、
Nervous system tissue.
【正确答案】
B
【答案解析】
单选题
Which of the following is NOT the way to transmit HIV?
A、
Sexual contact.
B、
Blood transfusion.
C、
By toilet seats.
D、
Pregnant woman to her fetus.
【正确答案】
C
【答案解析】
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