单项选择题

Questions 18 -21 are based on the dialogue between two students. Where are the reading rooms located

A．They are on the first and second floors.
B．They are on the first floor.
C．They are on the second floor.
D．They are in the white building.

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单项选择题

单项选择题

Questions 18 -21 are based on the dialogue between two students. Where are the reading rooms located 您的浏览器不支持 audio 元素。