题目内容
7.Since the financial crisis occurred in 2008,the unemployment of the United States _____ at the level of around 9percent.( )| A. | has been | B. | is | C. | had been | D. | was |
分析 自从2008年发生的金融危机以来,美国的失业率一直维持在大约9%的水平.
解答 答案:A.
根据时间状语Since the financial crisis occurred in 2008可知,该句应该使用现在完成时,强调金融危机对美国的经济所造成的影响,所以用现在完成时;故选A.
点评 本题考查现在完成时的用法,要格外留心一些典型的时间状语对于做题是很有帮助的,over the past decade,so far,since 1996等.
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