七年级语文下册人教版

水平放置的Ab两平行板相距h,上板A带正电,现有质量为m、带电量为+q的小球在B板小孔进入板间电场,欲使小球刚好打到A板,AB的电势差UAB=?动能定理：-mg(H+h)-qUAB=-mV0^2/2为什么是UAB而不是UBA,因为毕 排序( )John:Hi!Is today your birthday? ( ) John:How old are you? ( )John:Happy birthday!谢谢了,大( )Mary:Yes,it is. ( )Mary:I am fourteen. 为什么汽车的雾灯用黄色的,而不是红色的呢? 教我们语文的是一位岁数大的老教师（修改病句）修改符号 What are you doing here?It's for Tom.We agreed____here bur so far he has'tWe agreed____here bur so far he has't turned up yet.A.having met B.meeting C .to meet D.to have met --Tom,what are you doing?--I am ( )a cake.（ ）里填什么? what are you___(do,doing)?i'm____(looking for,looking)tom 求详解 It is going dark.We _____ go home.A.It is going dark.We _____ go home.A.may B.maybe C.may be D.dosen’t we ( )go home .It's going to rain.A.would rather B.Had rather C.Would better D.had better We wanted to get home before dark,but it didn’t quite ____ as planned.(2004浙江)A.make out B.turn out C.go on D.come up 为什么选B? smile on my face的smile是动词吗RT 英语作文：I WANT TO BE A……50字左右 It's so good to have you home again请问这句话为什么翻译成“真高兴又回家了”,这样翻译的话为什么要用you呢? We often see our teacher Miss Yang (带着） a smile on her face The smile on my mother's face showed ____ she was pleased whith my work中间为什么不填 that Lily often talks to us with a smile on her At last at least 造句 有启发的童话故事 I have been away from home for 12 years.（改为过去时间状语 （）have you been away from your home town,Janet?Since 5 years ago. have been away 有一种花长得像牵牛花.花是橙色的.请问是什么花? At once怎么读,翻译,造句 16只兔子放在8个笼子里,每边3个笼子里兔子的只数之和都是6.后来又买来4只兔子,要放在笼子里,怎样调整装法,使每边3个笼子里的兔子的只数之和仍然是6? 用'at once"造句, 幼儿园的孩子学奥数有必要嘛? once怎样造句 用once造句 好多幼儿园学前班的孩子都去学奥数为的是升学加分,这种升学加分不是停了吗?还是还存在?谁知道,也好不让孩子落在人后! 有一种花用六年扎根,一瞬开放,并四个花瓣四种颜色,这是什么花? 有没有一种花花期只有2天,而且只有4片花瓣,那4片花瓣还颜色不一样的花?不是“有没有”,是“有”,花的名字 小学奥数 整数的认识