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

解析四个选项的意思分别为："麻烦，困扰，打扰"；"打扰，打乱，打破"；"困惑，迷惑不解"；"迷惑，窘困"。根据句子主语部分"this balance in nature"(大自然的这种平衡)提示，应选择B项搭配。

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GCT工程硕士（英语）

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