One of the most ______ challenges that the United States-and indeed, the world-will face in the next few decades is how to allev

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问题 One of the most ______ challenges that the United States-and indeed, the world-will face in the next few decades is how to alleviate the growing stress that human activities are placing on the environment.

选项 A、consequential
B、subsequent
C、emergent
D、pressing

答案D

解析 pressing迫切的。consequential结果的。subsequent后来的。emergent突然出现的。
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