单选题 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】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。