单项选择题

Questions 32 to 35 are based on the passage you have just heard.

A．He thinks it’s interesting.
B．He thinks it may leads to problems.
C．He thinks it’s scientific.
D．He thinks it’s going to cost a lot.

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单项选择题

单项选择题

Questions 32 to 35 are based on the passage you have just heard. 您的浏览器不支持 audio 元素。