单项选择题

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

A．A plate.
B．A pear.
C．A ball.
D．An egg.
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Two-thirds of the freshwater on Earth is locked in ______.
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According to Peter H. Gleick, by the year 2025, as many as ______ of the world’s people will suffer from water shortages.
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