单项选择题

Passage Two
Questions 29 to 32 are bused on the passage you have just heard.

A．Cancers caused by infections are more common.
B．They can hardly be prevented.
C．There will a seventeen percent increase rate in cancers.
D．They result from smoking.

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单项选择题

A．Leave a message.B．Wait and talk to Mr. Wolf.C．Contact the Mr. Wolf later.D．Come in and visit Mr. Wolf.

A．Leave a message.
B．Wait and talk to Mr. Wolf.
C．Contact the Mr. Wolf later.
D．Come in and visit Mr. Wolf.

Passage Two Questions 29 to 32 are bused on the passage you have just heard. 您的浏览器不支持 audio 元素。

Passage Two
Questions 29 to 32 are bused on the passage you have just heard.