名词变复数

I stayed at home and ( ) nothing please pass the book ___ cover is green为什么ABD不行?AwhoBthatCwhoseDits 用方程解答急死我了给好评 小学五年级数学反思,急!快啊! The mother went out in a hurry,_________(留下)her baby at home alone 初中英语报纸:Where's my book?(改为复数句子） Jane likes salad(改为否定句子）Where's my book?(改为复数句子）Jane likes salad(改为否定句子）The keys are on the table(改为一般疑问句）My teacher plays basketball( 介词短语修饰的名词可以跟状语从句修饰的名词并列嘛~如题,例句：Nowadays,we can see hundreds of athletes in the Olympic Games and musicians who play in concerts.这句话有没有什么问题呢?athletes 能不能跟 musician 时间状语 可以由介词短语 组成 也可以由时间状语从句组成吧? as...as...这种结构作状语时是介词短语作状语,还是as引导的比较状语从句 ,具体问题看下面http://zhidao.baidu.com/question/305043853.html看看这个回答是不是错了,偶然翻到的,觉得是状语,现在有点疑惑as 不定积分lnx除x乘dx怎么求?f(x)=2x除1+x的复合函数f[f(x)]怎么求? Where is my book? We are often asked to make a speech in life.Most of us are afraid of it and don’t do a good job.Here are some simple steps to make your speech a successful one.First of all,find out everything you can about your subject and at the same time find ou We often stand in the cross of our life to make choice.翻译成中文 请翻译:You often emphasized to us the value of one’s life so that must have been what you met after those five years. his life is not burdened with the anxieties we are often trouble by怎样翻译,最后的by的用法 第十三题用方程式解...答的全面马上好评 贵金属延期交易中的持仓均价是依据什么来的?平仓时,盈亏是用平仓均价计算,还是按持仓均价计算?不好意思,打错字了.盈亏是用开仓均价计算,还是按持仓均价计算? 分部积分（e^x +lnx )dx ∫e^(-x+lnx)dx求此不定积分, A:：Where is your science book?B：Oh,no!I forget ---it to school.这里的空该填to bring还是to take 歌曲中有we are not the most powerful that we are not the simple life was simple 是哪首英文歌、 一道简便计算题(附过程)1999x20012001-2001x19991999 (关于完全平方公式和平方差公式)明天就要交要结合七年级第一学期的数学教材 某地电话拨号上网有两种收费方式,用户可以任选其一:(A)记时制:0.05元/分钟(B)包月制:50元/月此外,每一种上网方式都得加收通信费0.02元/分钟.(1)某用户某月上网时间X小时,请你写出两种收费方 一道计算题,求简便运算,1-6/5+12/7-20/9+30/11-42/13+56/15-72/17=? 设f(e^x)=e^2x+5e^x,则df(lnx)/dx= f(lnx+1)=e^x+3x 求df(x)/dx 我是这样做的：先设u=lnx+1,x=e^(u-1),f(u)=e^e^(u-1)+3e^(u-10） df(x)/dx=e^e^(x-1)+3e^x-1可是答案等于df(x)/dx=e^e^(x-1)*e^(x-1)+3e^x-1 df(x)=lnx/xe^[(lnx)^2]dx则 f(x)=? what does the university life mean to you 要回答,不要翻译 请问I’m gonna bring my six-year-old daughter to watch you perform tonight.中的to watch you perform tonight ,是什么用法 为什么perform是动词原形? （ ）1.---I wish that my parents to watch my basketball match_____ tomorrow.----But they are always busy.A.will come B.would come C.had come D.came everybody, that is ,except his six-year-old daughter这句话that is 怎么理解? six-year-old 为什么不用复数?是合成词?///////////////////////////////////// 求最正规数学“乘号可以省略”定义和“算式中书写方式”.数学算式中乘号的写法定义是什么?如6÷2（1+2）成不成立?什么情况下可以省略、用点表示、必须用X表示,这些具体定义是什么?最好