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.
The passage is mainly about

A．the usages of watches.
B．how to make wristwatches.
C．why are people interested in time.
D．a history of watches.

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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. The passage is mainly about 您的浏览器不支持 audio 元素。