假设你是宝塔中学初二年级的学生,在上周二上学的路上,你碰到一次交通事故

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(1)初一：x初二：y初三：z则x/y=9/10y/z=5/4因此有x=9z/8y=5z/4所以初三学生数在初中部学生数中的比例为z/(x+y+z)=z/(z+9z/8+5z/4)=8/27(2)他已

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Ihearthatyouneedareporter.Pleasegivemeachancetobecomeamemberofyourteam.First,letmeintroducemysely.My

http://bbs.51taoshi.com/thread-7387-1-1.html再问：那个...是标准答案么？再答：是的.

主题：人们往往如今工作更长的时间.长时间的工作,对自己的负面影响,他们的家庭和社会,因此应限制工作时间.你同意还是不同意?长时间的工作现在是一种常见的现象,firce竞争的快节奏的社会的结果.看来,许

Areyouok?I'mlihua.MyfathermotherpromisedmeinmyrecountaltakingmetoBritainasafterabout10daystravel.I'd

DearTom,　　IaminGradeSeveninBeijingNo.1JuniorHighSchool.ThisyearIlearnmanysubjects,suchasChinese,math

1/4x+7/4(1/4x+40)=x;解这个方程即可再问：怎么算再答：1/4x+7/3(1/4x+40)=x,抱歉，打错一个数字,答案是560人

……你可以先用中文构思,在英汉互译.就这样,一片完美的英语作文就诞生了,哈哈……有用的话,记着满意答案.再问：额……我要会写就不提问了

设三个年级一共x人,初一1/4x,初二+初三=3/4x,初二又是初三年级的3/4；所以初二9/28x;初三12/28x9/28x-1/4x=40解除得x=560人,也就是说,三个年级一共560人,希望

DeaiMr.Angie:IamastudentinYucaiMiddleSchool.MynameisZhanghua.IamgoingtoAustraliaforamonth’exchangest

假设初三年级x人则初二3/4x总数y人则x+3/4x=(1-1/4)y3/4x-1/4y=40解得y=560

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DearMary:I'mgladtohearfromyou.Theweatherinbeijingisdifferentinayear.Inspring,theweatheriswarmsoIt'sn

DearSir,    MynameisLiHua,fromGuangMingHighSchoolinBeijing,China.Iwouldliketoapp

DearSarahSmith,Iwasreceivedyourletterandwouldliketoanwseryourquestion.YouwereaskedmehowtolearnChines

DearMary:Haveaniceday!Thisismyfirsttimewritetoyou.I'mWangHao,studyatamiddleschoolinJinan.Jinanisabea

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亲,整天文章都是自己纯手工写出来的,绝无雷同.写作不易,来个采纳吧!Iamapagodahighschoolstudents,everydayinthemorningtogotoschoolbybik