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单选题
A
To protect environment.
B
To cool buildings.
C
To change the climates.
D
To provide drinking water.
参考答案
参考解析
解析：
[考点]细节题。录音提到，冷海水的另一个创新用法是给建筑降温（to cool buildings）。
[考点]细节题。录音提到，冷海水的另一个创新用法是给建筑降温（to cool buildings）。
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