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 本题空格处是说这种自然界的平衡不时地被打破。B项"disturbed打扰,打乱,打破"符合题意,如:He disturbed the papers on my desk.(他弄乱了我桌上的文件)其他三项中,A项troubled意为"麻烦,困扰,打扰",C项confused意为"困惑,迷惑不解",D项puzzled意为"迷惑,窘困",都与题意不符。因此B项为正确答案。
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