单项选择题

Questions 8 to 10 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. In the process described by the woman, why is the coal burned

A．To produce a gas containing carbon and hydrogen.
B．To remove impurities from methanol.
C．To heat the reactors.
D．To prevent dangerous gases from forming.

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单项选择题

Why was the man worried at first

A．He couldn’t decide on a topic for his paper.
B．He thought his paper was late.
C．He hadn’t heard from his family in a while.
D．He thought the woman had been ill.

单项选择题

What does the man say about children

A．They blush more readily than women do.
B．They’re uncomfortable performing in front of adults.
C．They don’t respond to stress well.
D．They blush less frequently than adults do.

Questions 8 to 10 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. In the process described by the woman, why is the coal burned 您的浏览器不支持 audio 元素。

Questions 8 to 10 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. In the process described by the woman, why is the coal burned