However, at times this balance in nature is ______, resulting in a number of possibly unforeseen effects.

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问题 However, at times this balance in nature is ______, resulting in a number of possibly unforeseen effects.

选项 A、troubled
B、disturbed
C、confused
D、puzzled

答案B

解析
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本试题收录于: 英语题库普高专升本分类
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