已知a1=2

也没什么好说,就告诉我三八线为什么叫三八线. 三八线是什么 三八线是指什么 关于英语句子结构的基本问题!急!动词-ing形式作表语和动词不定式作表语的区别. You're the light and faced the sun in my world . 这句来自哪里啊,顺便找一句对称的 This end of the heaven is skyline and that end of the ocean is And then this one time是什么意思?如题,感谢回答. You are in my heart that a ray of sunlight 这个中文意思, the dancer and the singer指的一个人还是两个人? the singer and the dancer look 还是look s so young The singer and dancer ( )from Beijing 简单句的英语句子结构主要是主语、谓语、宾语、表语……的用法,然后再简单说说怎样分析一个简单句的结构～也不要太难,初中水平的就行了. 英文简单句句子结构my mum was making breakfast for me帮忙分析下句子结构 propose / present / bring up / 求区别,求例句.在表示 提出 时的区别 英语简单句的5种基本类型 Stay healthy this summer,and enjoy a nice treat now and then. 你们太客气了、谢谢你们. 太客气了, 他请我们吃饭真是太客气了用英语翻译 Exercise mark us stay healthy and become strong翻译 404 not found The requested URL /buzhou/117.html was not found on this server. 这是什么意思怎样解决 the korean war的中文意思 overstep the dream中文什么意思 是an body还是a body 英语翻译全句子是：Where the body of research on the continuing tradition of pre-contact Aboriginal music has an innate sense of material geography,studies of contemporary music have tended to concertrate on the political and sociological dim 谁能围绕紫梦一词写一段优美的诗句 谁知道有关“蔷薇”的古诗词? 急需一篇英语讨论文 题目是The pros and cons of English as the international language文中一定要有从网络和（书中或杂志里）引用的实例 需要出处 急需急需!最好能给我一篇完整的文章 字数在350到500之 哪里有＜Pros and cons of telephone＞的英语短文 The pros and cons of being rich的英语文章 Tom is ill.Let me go i____ of him. 请问这句话是什么意思What are the pros and cons of advertising?急救~