单项选择题

Passage One Questions 26 to 28 are based on the passage you have just heard.

A．2 to 4 times.
B．4 to 6 times.
C．6 to 8 times.
D．About 10 times.

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单项选择题

单项选择题

Passage One Questions 26 to 28 are based on the passage you have just heard. 您的浏览器不支持 audio 元素。