有关质点的下列说法正确的是( ) A.质量很小的物体一定能够被看作质点 B.微观 发布时间:2017-04-20 21:33 │ 来源:www.tikuol.com 题型:选择题 问题: 有关质点的下列说法正确的是( )A.质量很小的物体一定能够被看作质点B.微观粒子一定能够被看作质点C.在某些情况下地球可能被看作质点D.体积大的物体肯定不能看作质点
题型:选择题 看表格,选择正确答案。Amy's Class Schedule (课程表)LessonMondayTuesdayWednesdayThursdayFriday1EnglishEnglishEnglishEnglishEnglish2mathcomputersciencemathcomputersciencemath3P. E.artP. E.musicP. E.4swimmingmathswimmingmathswimminglunch 5 science science science science science 6 ChinesedanceChinesedanceChinese1. How many classes does Amy have every day?[ ]A. 4.B. 6.C. 7.2. Does Amy have Chinese on Thursday?[ ]A. Yes, she does. B. No, she isn't. C. No, she doesn't.3. What does Amy study in the fifth (第五节) lesson on Friday?[ ]A. English.B. Science.C. Swimming. 4. What doesn't Amy have on Tuesday?[ ]A. Art.B. Computer science.C. Swimming. 查看答案
题型:选择题 I am really upset about tomorrow’s exam. I am always so slow. _______! You can pass it. You have been working hard on it, haven’t you?A.Go aheadB.Just feel at homeC.Are you kiddingD.Cheer up 查看答案
题型:选择题 化学能与热能、电能等能相互转化。关于化学能与其他能量相互转化的说法正确的是A.化学反应中能量变化的主要原因是化学键的断裂与生成B.铝热反应中, 反应物的总能量比生成物的总能量低C.图I所示的装置能将化学能转变为电能D.图II所示的反应为吸热反应 查看答案