盒中有6只灯泡,其中2只是次品,4只是正品,有放回地从中任取2次私每次取1只,求下列事件的概率

急 Have you ever helped disabled children?把have换成did有影响吗?为什么是helped呢？ 英语翻译Have you ever suddenly felt that someone you know was in trouble—and was he?Have you ever dreamed something that came true later?Maybe you have ESP （超感觉知觉）．ESP stands for Extrasensory Perception．It may be called a sixt have you ever done something to change someone's life帮我找一下这篇文章,急等,谢谢(∩_∩) 孔子语录中,对待事物应具有的正确态度的句子是 孔子的认真态度的有关句子 交通歌谣过马路左右看,翻栏杆(）括号内添反义词该添什么就像左右看中的左右一样 ..They want to _____ some presents for Mary.What _____doyou play at school?His chair is in _____ _____(three) room._____ ______（two）month of the year is ______.____is ____ _____(one) month of the year.—What is the month between _____ and _____? 面对两小儿辩日孔子为什么不能决也? 《两小儿辩日》中的孔子不能决也说明了什么?你认为孔子的态度是否可取?为什么?我正需要, 两小儿辩日中你是怎样看待孔子不能决也的 分析有些人在过马路时出现的翻越隔离栏的现象.你对此有何看法?在设计工作中有何启示.这是人体工程学的问题,能解释得清楚点吗(分点回答) 新概念英语一册（新版）练习册第49课～第50课答案 藏羚羊过马路 作者看它们过马路时内心想法的句子!急哦！给分 孔子从齐回鲁的具体时间? 班级口号165班.英语的最好 有关孔夫子的对联有横幅啊 结合论语八则写出孔子的话对你学习有哪些指导意义 赞扬孔子的对联圣人功德_______________,________________精华照五洲.残缺的部分添什么啊. 写一幅纪念孔子的对联越快答复越好 急 What _____you _____(do)after you _____(leave)here?I _____(return)home and _____(get) a job. 1 what will you do after lunch _________________________ 2 what will you do when you go home tonigh1 what will you do after lunch _________________________ 2 what will you do when you go home tonight___________________________3what will your parents 问句:what did you do last week?选择回答：I （ ）A.read books. B.go hiking C.was at home 一过马路闯红灯打一生肖为什么打蛇要打七寸? 小学语文和初中语文的不同点最好字数多一点 要明白,600字左右,非常急! 个性班级口号我是高一三班的,要两个班级口号,有创意点的, 二战后期交战后初期,美国采取了哪些重大举措确立了资本主义世界霸主地位 二战后初期美国经济在资本主义世界中处于的霸主地位对美国而言起到了什么作用 where did you go last saturday?怎么回答?很急 where you go the 改错:Lily,where did you went last Saturday?大哥大姐,快来回答,急用! Where did you go last Saturday afternoon?