单项选择题

Questions 7 to 10 are based on the following conversation. At the end of the conversation, you will given 20 seconds to answer the questions. Now, listen to the conversation.
What are the man and the woman talking about

A．Genetic engineering.
B．Genetic screening.
C．Genetic food.
D．Eugenics.

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单项选择题

单项选择题

Questions 7 to 10 are based on the following conversation. At the end of the conversation, you will given 20 seconds to answer the questions. Now, listen to the conversation. What are the man and the woman talking about 您的浏览器不支持 audio 元素。