语法与词汇 7.Widespread wage reductions were imposed during the recession of 1906—1909 and price inflation thereafter impeded the recovery of real wage levels.
【正确答案】 C
【答案解析】各选项的意思是：convoluted盘旋，包卷。belied盘旋，包卷。encumbered妨碍，打扰。stoked给(机车等)烧火；把(火)拨旺。画线单词impeded的意思是：阻碍，阻止。根据句意可知，应选择C。