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

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

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

答案B

解析 本题测试动词辨异。四个选项的意思分别为:A.troubled麻烦,困扰,打扰;B.disturbed打扰,打乱,打破;C.confused困惑,迷惑不解;D.puzzled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,句意方能合理。
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