单项选择题

Section A Questions 11 to 18 are based on the conversation you have just heard.

A．Attending the party.
B．Visiting some friends.
C．Studying for an exam.
D．Taking an exam.

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单项选择题

填空题

In eliminating a lot of noise in the airport, pilots can also help, and they can ______.

Section A Questions 11 to 18 are based on the conversation you have just heard. 您的浏览器不支持 audio 元素。