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Questions 22 to 25 are based on the conversation you have just heard.

A．Lower prices.
B．More choices.
C．More competition.
D．More companies.

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If all the ice in the Antarctic melted, global sea levels would rise hugely.

单项选择题

Questions 22 to 25 are based on the conversation you have just heard. 您的浏览器不支持 audio 元素。