Just as in the stock market, there is opportunity for power-management advances in 【rough】 economic times, despite a darkening forecast for many power-management devices themselves.
Just as in the stock market, there is opportunity for power-management advances in 【rough】 economic times, despite a darkening forecast for many power-management devices themselves.
A、coarse
B、evident
C、excess
D、difficult
【正确答案】：D
【名师解析】:在题目中，"rough"一词是关键，它用来描述经济时期的困难和不稳定。选项A "coarse"意味着粗糙的，不精细的；选项B "evident"意味着明显的，显而易见的；选项C "excess"意味着过量的，过度的；而选项D "difficult"意味着困难的，艰难的。根据题目内容，"rough"经济时期意味着困难的时期，因此正确答案是选项D "difficult"。这个选择与题目中提到的"darkening forecast"相呼应，表明尽管许多电力管理设备自身的前景越来越暗淡，但在困难的经济时期，电力管理进步的机会仍然存在。
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