单项选择题

Passage Two
Questions 29 to 31 are based on the passage you have just heard.

A．We lose a day.
B．We add 24 hours.
C．We gain 12 hours.
D．We add an extra month.

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单项选择题

单项选择题

Passage TwoQuestions 29 to 31 are based on the passage you have just heard. 您的浏览器不支持 audio 元素。