单项选择题

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

A．A very popular food plant.
B．A plant with limited uses.
C．A food plant which has been used.
D．A plant used as a main food.

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