题目

下列与保护视力和听力有关的叙述中，错误的是  （   ）                                                         A、看书时书与眼的距离越近越好B、看书一段时间后应远眺几分钟C、用耳机听音乐时，声响不宜过大D、平时不要用尖锐的东西掏耳  答案：A解析:略 ---Was the job too difficult? Why hasn’t it been finished now?---Anybody _______ it but nobody did it, because it’s no use doing that, only a waste of time．A.should have doneB.could have doneC.might have doneD.must have done