单项选择题

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

A．The signing is very necessary.
B．The signing is just a reassurance.
C．The signing is not very necessary.
D．The signing is a way to monitor abuse.

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填空题

I don’t think ______ (炫耀你懂得更多知识是不明智的) in front of the director, for it may offend him.

填空题

established

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