单项选择题

Passage Two
Questions 29 to 31 are based on the passage you have just heard.

A．Agriculture in the industrialized world
B．Cultivated crops.
C．The association between roses and humans.
D．The discoveries of certain grasses.

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harvested

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As Stanley said, if you went to know how. when or why Herakleion and Eastern Canopus disappeared, there was were ______to refer to.

Passage TwoQuestions 29 to 31 are based on the passage you have just heard. 您的浏览器不支持 audio 元素。