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

A．They eat or spoil crops.
B．They attack birds and animals.
C．They destroy dams and buildings.
D．They carry diseases.

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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。