单项选择题

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

A．The beginning of the semester.
B．Just before the first weekly exam.
C．Halfway through the course.
D．Just before the final exam.

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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。