单项选择题

Questions 11 to 13 are based on the following passage. At the end of the passage, you will be given 15 seconds to answer the questions.
Now, listen to the passage.
One solution to the world’s food shortage problem could be found in

A．foods from non-food materials.
B．foods in plastic tubes.
C．freeze-dried foods.
D．eatable food packages.

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单项选择题

单项选择题

Questions 11 to 13 are based on the following passage. At the end of the passage, you will be given 15 seconds to answer the questions. Now, listen to the passage. One solution to the world’s food shortage problem could be found in 您的浏览器不支持 audio 元素。