双层交叉楼梯原理

关于雅思口语技巧的问题,我把常考的话题分类编在一起,会扣分吗雅思Part1part2加起来有80多个话题,全部准备怎么可能呢,比如我把part1分类成个人信息（work/study,hometown,friend/family,name）、兴趣 Many people who leave school hold a negative attitude towards learning.Why does this happen?How to solve the problem?可以指导我一下如何写这篇作文吗? 该怎样用英语问心情 They eat many ______ and ______ (水果和蔬菜）.这里的水果该填fruit还是 fruits? The family would then sit in a circle around the inner tube and spend the evening chewing on it.(翻 How many meat do they eat?How many是A meat是B do they是C eat是D 上列句中均有一出错,请找出并改正.呵呵! 【同义句】Mary left the company in 2005.=Mary ____ ____ ____ the company ____ seven years. teach to do sth?teach doing sth?如何区别能否理解为teach to do sth教某人去做某事？teach doing sth教某人做某事（已完成）？和stop，remember用法一样吗？ teach sth.还是 teach to do sth.抑或teach do sth.,to可以不加吗即TEACH SB.DO STH. 去括号 a+(b-c)=() a-(b-c)=() a+(-b+c)=() a-()=a+b+c 化简M-N-（M+N）的结果是 下列哪座山不属于“四大佛教名山”（ ） A.山东泰山 B下列哪座山不属于“四大佛教名山”（ ）A.山东泰山 B.山西五台山C.安徽九华山 D.浙江普陀山 仇雠怎么读? 然既没,皆以正人许之,虽其仇雠,不敢訾也.古文翻译 今王奉仇雠以伐援国,非所以利燕也 文言文翻译 翻译 今王奉仇雠以伐援国,非所以利燕也 及仇雠已灭什么句式,说明理由 写三清山的山的作文. 抑恶能不厚疑天下哉的翻译, 天下恶乎定 什么意思 谢谢 想一想,请动脑筋,联系上下文,填入所缺的词,把对话补充完整.A:What are you ( )now?B:I'm ( ) a model ship.Do you any glue?( )is at home.A:Yes.B:Can I ( ) it,please?A.( ).Here you are.B:( ) youA( )welcome. 根据上下文意思完成对话,每空一词.A：I want to join the ( 1 )clup.B：Good.What's your ( 2 )name?A：Chen.B：( 3 )do you ( 4 )your given name?A：M-I-N-G.B：( 5 )do you want to join us?A：Because I can sing well.B：( 6 )you dance?A 根据上下文提示,将对话补充完整,每空一词. but my son ( )like its color.A,can't B,doesn't C,don't I don't like (its)color.为什么用its? 在括号里填上合适的数,商是一位数,（）36/24.,（）57/54,（）42/36 根据上下文和图片提示写单词完成对话,每空一词 70kg是哪个战队的 70kg狙击怎么练的 He --- 60 kilograms.A.weigh B.weight C.weights Dweighs Danny weigh 57kg.Peter weighs 50kg.(用比较级将两句合为一句) -(m-n)=什么,合并同类项 2+m-(-m-2)= (去括号,合并同类项）