◎ 题干
However, at times this balance in nature is ________ resulting in a number of  possibly unforeseen effects.
A. troubled          B. bothered        C mixed     D. disturbed
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“However, at times this balance in nature is ________ resulting in a number of possibly unforeseen effects.A. troubledB. botheredC mixedD. disturbed…”主要考查了你对  【动词短语】【动词】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。