第12题: [单项选择]Noise differs from sound in that ______. A. noise interferes with the task being done B. noise is a special type of loud sound C. noise is usually unavoidable in big cities D. noise can be defined more precisely than sound 参考答案:A 答案解析:[精解] 文章的第四行:That noise is sounds that are unrelated to the task at hand.