南美洲西部是什么山脉

明天山西 省哪里能看到日全食 日全食 2009山西能看到吗 英语翻译 已知α∈(0,π/2) β∈(π/2,π),cos2β＝－7/9,sin(α+β)=1/3 (1)求cos(β－α)的值(2)求sinα的值 大学物理和中学物理的区别 soul-mate在美国人眼中的含义我知道是翻译过来是灵魂伴侣的意思.但是想弄明白,如果一个外国人（假设美国）说另一个异性是他的soul-mate,这代表什么?算是很意义重大的词吗?在外国人的语境 soul mate的真正含义别敷衍 dear dog I'm really very sorry about it. 10、因素变量和结果变量的变动方向不一致,则相关程度低.正确 错误 不可以作为变量名的是,说明理由 2个方程和1个列式计算题3（X+7.5)=27 8乘2+8X=40 一个数的12倍加上它的2.4倍得47.52求这个数 未说明结合变量是什么原因 大学物理与中学物理的区别与联系 Originally I was wrong,deeply so 在列算式,用分布式等某食堂有大米400千克,面粉350千克,大米每天用去40千克,面粉每天用去30千克,几天后大米和面粉剩下的重量相等?（数学难题）求最简便的方法 who wrote the letter to you?是什么意思? I wrote a letter to you.的句型结构?wrote a letter to为动词短语作谓语,you 为宾语?还是a letter是宾语,to you为状语?还是a letter 为宾语,to you为宾语补足语?还是a letter 为宾语,to you为定语? You must reply to that boy who wrote you a letter 谁是主语能不能用whom Who wrote this letter to Daming Who wrote this letter to Daming 是什么中文意思啊~ soul mate灵魂伴侣是什么意思 36x111+888x8 简算 什么叫soul mate 到底说的是知己还是伴侣?有什么电视剧或电影提过soul mate的吗?我知道是灵魂伴侣的意思啊!是偏向知己的还是夫妻的?有没有什么电视剧提到过啊? 36x111+888x8如何简算? 36X111+888X8怎样简算 soul mate灵魂伴侣和爱人是一个等级么我一直纠结.因为花样男子李的金丝草你也不能说她不爱尹智厚啊你也不能说她背叛了具俊表啊- -纠结死了 Being unfair.I am not intentionally,was really sorry very much.Actually I did not know that must say anything,except sorry,I really did not know that must say anything.Really must be angry,I also do not have the means. sorry,it seems that i am really too unfair to you he wrote ____ letter to his parents yeaterday.he wrote ____ letter to his pa.a 800wordsb.an 800-wordc.an 800-word'sd.a 800-word顺便说明为什么. 18.I wrote him a letter to show my ________ of his thoughtfulness.A.achievement B.agreement C.application D.appreciation 100% net 30 days on delivery是什么付款方式啊这个付款方式是货物发出后30天之内100%付款吗? 30 days net是什麽意思 What were you doing at 12o'clock yesterday?我英语盲（快）还有几题：2.Whet were you doing at 12o;clock yesterday?3.Whet were you doing 15 minutes ago?4.Were you watching TV or learning English at 8 o'clocklast night?5.Was your mother doing