微分dx怎么求

跪求新概念英语口语宝典第四册的MP3 急需新概念英语口语宝典（第一、二、三、四册）mp3音频美音的,能不能打包发到我邮箱zhangwei4866@163.com _____(英雄)appeard onr after another after the big earthquake. After the earthquake ,more than 100 people were taken to the hospital ,( ) had been women and children 为什么用some of whom 而不用 some of which take the bike和take a bike有什么区别 take a bike有这个说法吗? some people shop three times a week some people go shoping three times a weekSome people shop three times a week Some people go shoping three times a weekSome people do some shoping three times a weekSome people do the shoping three times a week4句 A million B millions of C three million of D three millions___people watched the game _____is it from your home to your school?About ten minutes ’walk.A.How long B.How far We want three people to () us paint some pictures.（）里填什么?3Q 新概念生活英语口语怎么样 live in time和live in times有什么区别?哪个含义好. in more recent times,time为什么加s The building remained mostly undamaged after the earthquake,and only minor repairs were necessary After the earthquake,many more buildings need building还是to be built 还是两者都行 Thet keep the animals in tiny cages.（改为被动语态）The animals ------- -------- in thiny cages by them. "The earthquake shook the building."能否运用被动事态,表达为“The building were shaken.”? I feel terrible to see many animals_____ in tiny cages.A.keeping B.to keep C.to be kept D.kept为什么?还有C 为什么不对? It is 20 minutes______(walk)from my home to your school see people fighting是什么意思 see people fighting应该打什么电话 See an accident on the road.See aperson bleeding.See people fighting.Sally是个好孩子,可是她在突发事件发生时,忘了紧急电话,写写看. see people queuing 的意思精讲精练8年级中的 The car accident killed three men.(改为同义句)Three men____ ____ ____in the car accident. The car accident killed 2 people.同义句Two people died ( ) ( ) the car accident. The car accident killed (two people)对括号内提问（ ）（ ）people ( )the car accident( )括号内应填什么? the car accident killed 2 people. two people ___ ____ ____ during the car accident .同义句转换 come up to i had to run to come up with him .come upi had to run to come up with him .come up with 我知道是赶上的意思,had是什么词性?做什么成分?为什么不是came而是come? come up 1、The child ----- one relative alive after the earthquake(地震）A、have only B\has only C\ only have D\ only has.2、I ----- one cousin.A、have only B\has only C\ only have D\ only has并说明理由 The child._____ one relative alive after the earthquake.A have only B only have C has only D is only