单项选择题

Questions 14 to 17 are based on the following passage. At the end of the passage, you will be given 20 seconds to answer the questions.
Now, listen to the passage.
What is the focus of the passage

A．The reasons for people’s cry.
B．How tears are produced.
C．The function of tears.
D．The findings of Winfred.

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单项选择题

单项选择题

Questions 14 to 17 are based on the following passage. At the end of the passage, you will be given 20 seconds to answer the questions. Now, listen to the passage. What is the focus of the passage 您的浏览器不支持 audio 元素。