题目内容
【题目】The real reason why prices ____ and still are, too high is complex, and no short discussion can satisfactorily explain this problem.
A.were
B.will be
C.have been
D.had been
【答案】A
【解析】句意:过去和现在价格一直居高不下的真正原因很复杂,简短的讨论解释这一问题无法让人满意。根据题干中“and still are”的提示可知过去价格也居高不下,故用一般过去时,表示过去的状态。故选A项。
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