change··· for·· 和 substitute·· for·· 的区别before starting to work ,she ________. A substituted her beautiful dress for the working clothes B. changed her beautiful dress for the working clothes . 答案选B,why? 请解答,tks

help me again·~Our cornerstone is the MIT Integrated Global System Modeling framework (IGSM) for integrated assessement of economic and environmental change.The IGSM is a comprehensive mathematical tool for analyzing global climate change and its so 字母上面有符号的是什么字如上·CHIN-SU又是什么意思 change··· for·· 和 substitute·· for·· 的区别before starting to work ,she ________. A substituted her beautiful dress for the working clothes B. changed her beautiful dress for the working clothes . 答案选B,why? 请解答,tks 吐蕃为什么要与唐朝和为同一家急求求你们了··不要太简单·也不要复制··用自己的话说即可 ````````````````````su 适合在海边听的英文歌中文的也可以 像 浪花一朵朵···· nothing gona change my love for you you are my sexy gril la la love 这样风格的曲子 在三角形ABC中,MN／／BC,三角形ABD面积等于三角形MBN的面积,求证：BN²＝BD·BC (如果不行,证BM&su su-34涵道机这几天迷上了su--34大家看看好不好,那位同志教我一下买什么舵机好,还有电调,涵道···大家看看黑旋风4800KV好不?http://item.taobao.com/item.htm?id=4028346106&ali_refid=a3_420434_1006:1102339828:6:su34 change into和change for的详细区别要例句,要具体说明,谢谢. Just for a change Don't change for initiatives for change是什么意思 Change For You 歌词 change sunrise for sunset time for change your 英语翻译Understanding of climate change remains limited 这个 remains limited 看不懂···说一下是怎么个用法 一首抒情的英文女声歌曲,歌词有change a life,we don't need to,it take a change这些字眼.有这些字眼：begin to····fall forget ····uniform （beautiful）change a life 、somewhere、someone 、misswe don’t need to fit · su wa ta xi ,yi zu mo yi zu mo,dai yi su ki ···guo me···guo me na sai i.知道大概的翻译就够了