【单选题】边长为L的均质正方形平板,位于铅垂平面内并置于光滑水平面上,如图所示。若给平板一微小扰动,使其从图示位置开始倾倒,平板在倾倒过程中,其质心C点的运行轨迹是:
【单选题】--What do you think of the book? --Oh, excellent. It's worth ____a second time. A. to read B. to be read c. reading D. being read
【单选题】She hopes she _______ more friends at her new school.
【简答题】边长为L的匀质正方形平板,位于铅直平面内并置于光滑水平面上,如图所示。若给平板一微小扰动,使其从图示位置开始倾倒,平板在倾倒过程中,其质心C点的运动轨迹是( )。
【简答题】交际应用( B ) A: Hi! Mary. 16 B: Hi! Maria. Nice to meet you, too. A: Long time no see. 17 B: I’m studying in Chongqing Vocational School. A: Is Chongqing Vocational School different from other high schoo...
【单选题】Alice hopes to _________ more friends at her new school.
【单选题】Alice hopes to _________ more friends at her new school.
【简答题】【选择语句编程】 编程: 从键盘输入a,b,c三个整数,按从大到小的顺序输出,且是a最大,c最小。
【简答题】边长为L的均质正方形平板,位于铅垂平面内并置于光滑水平面上,如图所示。若给平板一微小扰动,使其从图示位置开始倾倒,平板在倾倒过程中,其质心C点的运动轨迹是:
【简答题】听下面一段独白,回答第1至第3三个小题。 1.What do you think the speaker is? [ ] A. A teacher. B. A driver. C. A guide. 2.What's the population of London? [ ] A. 7 million. B. 17 million. C. 70 million. 3.Which o...