两个平行放置的无限大均匀带电平面，电荷密度均为，则两无限大带电平面之间的电场强度大小为

that was____enjoyable evening.i'll never forget it A /B the C an D a it is such good a story that I'll never forget it这里的that 可不可以用as 代替?为什么 劲舞里有句话叫做“千里送B”, 在五和六中间填几个零才能成为五千万零六 I'll never forget the day ------ he ------.A.that; caught some fish B.when; caught some fish to meC.that; caught us some fish D.when; caught us some fish谁知道为什么？ clear neat pleasant的 free excited close polite sure careless 他们的 副词 I will start here make a diference? i've nearly finished my work为什么要加过去式ed去掉ed可以吗?I've nearly finish my work We'll have it when all the work is finished.为什么主句用将来时而宾语从句却用过去式呢? HOW to keep fit的英语作文,外加翻译 How do I keep fit 英语作文以How do I keep fit 为题,写一篇70-80词的作文 紧急用 What is "small talk"used for what is the small bag used( A.for B.asC.byD.to为什么?不好意思 题目漏了一半what is the small bag used( ---My pencil-box 有关频率副词的短语 频度副词词组有哪些同题~ look see watch 1．What can you___in thelook see watch 1．What can you___in the sky? What did you ____?A,see B,look C,watch 英语求三句过去分词的造句 过去分词＋for＋一段时间的造句 public holidays will be given as off day in lieu怎么翻译啊 A maximum of 3 days in lieu may be taken just before or just after a day off我的理解是：在休假一天前后可以享受最多三天补休,但是觉得有点儿说不通,谁可以帮忙组织一下怎么翻译好. 英语翻译People used to go to the cinema to see films.But now most people see films at home instead.Because the VCD has made this possible,and it also has changed people’s lives.Nowadays people can just go to a video store near their house,rent( 英语翻译Wang’s work Perter Bol explains,was written for the literati as literati rather than as officials per se,It is not a mechanism for discussing statecraft,but rather a reference work for literati,enabling them“to envision a place---at l Here is what they____(say)用所给动词的适当形式填空1.Here is what they____(say)选择About ( )of the teathers in the school were born in the ( )A.two-thirds;1970B.two-thirds;1970sC.two-third;1970D.two-third;1970s这样写 因为爱所以爱用英语怎么说?急,马上要用!好的大爷给钱!~ in no time get in time 啥意思?貌似有点不对谱，刚刚在一图片，就音符下面出现get in time的， in staff time是什么意思? 英语翻译 英语翻译我的弟弟既不喜欢唱歌也不喜欢跳舞我哥喜欢中国邮票桌子上有面包吗?有(完整回答)Amy有双大眼睛和长头发.房间里有什么?有一个床头柜和一张大床 越怕什么来什么用英语怎么说?是The more afraid of what to what么. #地球资源#最近,已灭绝的“长指”青蛙重现非洲,是不是有些动物真的已经灭绝?