It is true that at times the U.S.A. has experienced periods ofunemployment as well as labo

发布时间：2020-08-17 05:16:39

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

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解析：考查形容词：A. available可获得的，B. acute严重的；敏锐的；急性的；剧烈的，C. accessible易接近的， D. ashamed羞愧的，句意：这是真的美国有时会经历严重的失业和劳动力短缺问题。所以选B。
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