◎ 题干
It is true that at times the U.S.A. has experienced periods of _______ unemployment as well as labor shortages.
A. available                         B. acute
C. accessible                      D. ashamed
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“It is true that at times the U.S.A. has experienced periods of_______unemployment as well as labor shortages.A. available B. acuteC. accessible D. ashame…”主要考查了你对  【序数词】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。