At times the balance in nature is____, resulting in a number of possibly unforeseen effects.

A．confusedB．puzzledC．disturbedD．troubled

C

解析試題分析：句意：大自然之間的平衡不時(shí)地受到干擾，導(dǎo)致了很多無法預(yù)料的后果。A.困惑，迷惑  B. 困惑的，茫然的   C. 擾亂，干擾   D. 麻煩的，不安的。由句意可知選C。
考點(diǎn)：考察動詞詞義的辨析。
點(diǎn)評：本題難度較小，只要平時(shí)對于單詞的記憶夠牢固，并能正確理解句子的句意，問題就迎刃而解了。

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