下列运动物体中，平均速度有可能为20m/s的是（ ） A．久在平直公路上行驶的汽 发布时间：2017-06-16 19:52 │ 来源：www.tikuol.com 题型：选择题 问题： 下列运动物体中，平均速度有可能为20 m/s的是（ ）A．久在平直公路上行驶的汽车B．正在快速爬行的蚂蚁C．正在进行比赛的短跑运动员D．在高空中正常飞行的波音747客机
题型：选择题 选择合适的代词完成下列句子（每词只用一次)。mine his its our my hers her yours their theirs1、Whose is this nice skin? It's .2、I have a good friend. name is Hellen. 3、 Maths teacher is Miss Li. We're in the same school. 4、Are they his shoes? Yes, they're .5、 I have a lovely dog. name is Bobby. 6、Can I have an apple? Sure, is over there. 7、Your storybook is old, is new. 8、Su Yang and Su Hai are twins. trousers look the same. 9、Who is the old man over there? He's uncle. 10、We have a basketball here. But is on the playground. 查看答案