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Over the past few years the cost of living _______________considerably.
A．has been raisedB．has risenC．was raisingD．was rising
B

試題分析：考查時態(tài)和動詞。Raise及物動詞提高；rise不及物動詞上升。本題的時間狀語Over the past few year常與現(xiàn)在完成時連用；
點評：時態(tài)的考查要根據(jù)上下文的語境和句子的關(guān)鍵詞，本題就是根據(jù)Over the past few years選定使用現(xiàn)在完成時。
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