ItistruethatattimestheU.S.A.hasexperiencedperiodsof 

問題詳情：

 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

【回答】

B

知識點：形容詞

題型：選擇題