第24题:[单选题]The factory operated_______until the order was filled. A.at times B.to the minute C.day by day D.around the clock 参考答案:D 考查语境分析和词语辨析。句意为“工厂地工作,直到把订的货物赶出来为止”。at times“有时”,to the minute“恰好,一分不差”,day by day“一天天”,around the clock“昼夜不停地”。根据语境,应为工厂昼夜不停地工作。故选D。