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

A．60% of its population.
B．70% of its population.
C．30% of its population.
D．40% of its population.

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单项选择题

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