While nuclear weapons present grave ______ . dangers, the predominant crisis of over population is with us today.

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问题 While nuclear weapons present grave ______ . dangers, the predominant crisis of over population is with us today.

选项 A、inevitable
B、constant
C、overwhelming
D、potential

答案D

解析 potential潜在的。inevitable不可避免的。constant永恒的,连续发生的。overwhelming巨大的,势不可挡的。
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