题目

观察可分为两种，不需要测量具体数据的观察叫定性观察；需要测量具体数据的叫定量 观察。那么用放大镜观察蜗牛属于，用尺子测量课桌高度属于。 答案：【1】定性观察【2】定量观察Daniel's family ________ their holiday in Huangshan this time next week.A．are enjoying B．are to enjoy C．will enjoy D．will be enjoying