--- Do you think the MP3 player put its listener ________?
--- Yes, too much use of it could lead to hearing loss, experts sayA.under controlB.at riskC.in useD.on top
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B解析短语辨析。A.情况正常 B.处于危险中 C. 在使用中 D.领先。句意：你认为mp3播放器让他的听者处于危险中吗？——也是，用它太多会导致听力损失，专家说。故选B。