【单选题】Staying in a hotel costs ______ renting a room in a dormitory for a week.
【单选题】-How often does your daughter watch TV? - __________. [ ]
【单选题】— How often do you go swimming? — ______. [ ]
【单选题】Excel 2010单元格C7的值等于E5的值加上E6的值,在单元格C7中应输入公式_____。
【单选题】某产品的销售额时间序列符合加法模型 Y=T+C+S+E,此模型中的T是_________。