题目

下列说法中,正确的是( ) A . 为检测我市正在销售的酸奶质量,应该采用抽样调查的方式 B . 两名同学连续五次数学测试的平均分相同,方差较大的同学数学成绩更稳定 C . 抛掷一个正方体骰子,点数为奇数的概率是 D . “打开电视,正在播放广告”是必然事件 答案:A(   ) 5. ―I hear your grandpa has an old cup in your home.―Yes. It       drinking tea long ago and my grandpa drink tea with it when he was young.   A. was used to;was used to   B. used for;used to   C. was used for;was used to   D. was used for;used to
数学 试题推荐