However at times this balance in nature is _____ resulting in a number of possible unfor

学历类 自考英语 已帮助 人

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

A.troubled

B.disturbed

C.confused

D.puzzled

请帮忙给出正确答案和分析,谢谢!

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