单项选择题

Questions 1 to 3 are based on the following conversation. At the end of the conversation, you will be given 15 seconds to answer the questions.
Now, listen to the conversation.
How many people are there in Africa infected with HIV

A．40 million.
B．About 28 million.
C．12 million.
D．Less than 28 million.

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单项选择题

单项选择题

Questions 1 to 3 are based on the following conversation. At the end of the conversation, you will be given 15 seconds to answer the questions. Now, listen to the conversation. How many people are there in Africa infected with HIV 您的浏览器不支持 audio 元素。