However ,at time this balance in nature is ____resulting in a number of possibly un foreseen effect
问题描述：
However ,at time this balance in nature is ____resulting in a number of possibly un foreseen effect
a.troubled b.disturbed c.confused d.puzzled
并回答
答
However ,at time this balance in nature is ____resulting in a number of possibly unforeseen effect.
a.troubled b.disturbed c.confused d.puzzled
选B,disturbed
四个词都有“扰”的意思,但是：
trouble 指带来麻烦
disturb 指破坏秩序
confuse 指引起迷惑
puzzle 指用问题难住
破坏自然界的平衡,disturb是最合适的.