题目内容

The price of cell phones_______ recently.
A．has been raised B．has been risen
C．has been fallen behindD．has been broken down
A
考查动词及短语在被动句中的用法辨析。只有raise为及物动词。B 为不及物动词；C，D为不及物动词短语，不能用于被动语态。
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