形容一个人练得很熟练

三角形ABC的三边为a,b,c;c为斜边.问：1/a+1/b=1/cma吗?（练习册的答案是：是） 听说CMA新考纲发生了变化,难度增加,那么它所说的所有题目的难度达到C是什么意思? CMA指什么? 怎么通过cma of 前一定是主语吗?偶们老师总是说：of 前面是主语!of 前一定是主语!那为什么新二中13课中第一句：The Greenwood Boys are a group of pop singers.如果of前是主语,那么主语是单数,be动词为什么用复数呢? 花园里有65颗月季花,比菊花棵树的2倍还少5颗,花园里有多少颗菊花?40比（ ）少百分之25 请问LED电源（DC12V,30W）的电源需要做商检吗?海关编码是什么? 分子分凝统计结晶动力学 高分子晶体熔化热力学 用英语怎么翻译 什么物体不是晶体? and our economic revolution by a revival of the american spirit .has been matched 是不是用了现在完成时的被动语态.整个句意.谢谢帮我分析语法.and our economic revolution has been matched by a revival of the american spirit . 什么是Appropriated_retained_earnings? retained earnings per question什么意思在ACCA F7中出现 Profit&loss是什么如题... lost in the bird of wonder pass by city and find. 初一新生开学典礼发言稿!要600字左右注意是新生!并且是秋天 原创600字左右就行了并且是新生说的~ 英语翻译1.Vowels referto the sounds in the production of which no articulators come very closetogether and the air-stream passes through the vocal tract without obstruction.2.Cardinal Vowels are a set of vowel qualities arbitrarilydefined,fixed a 英语翻译Dear Sir,Please send us the draft contract in CIF term.Airport Moscow Russia.Our offer to include in contract the following terms:L/C Payment after quality control by company CGSThe payments for the goods under this Contract shall be effe 找一种蝴蝶它是白色的,上面的翅膀很大,下面的翅膀像长尾大蚕蛾一样又像锤尾凤蝶的一样那是什么蝴蝶,还有一种蝴蝶是粉白色的,是螺旋着向上飞的,外表和上面的差不多,那又是什么.前一个 一种蝴蝶有一点点像青凤蝶,但是有很小的尾突.合起来的翅膀是黑白相间的,翅膀展开后的里面是金色,边缘有黑白色的边,翅膀展开后的里面还有红色的斑点.求名字! His great discovery ___his determination and devotion to science.A.led in B.led on C.resulted fromHis great discovery ___his determination and devotion to science.A.led in B.led on C.resulted from D.resulted in请说明理由 蝴蝶为什么要采花蜜 怦组词 蝴蝶发现花蜜靠什么 蝴蝶靠什么来吸花蜜?越详细越好,名称要准. 蝴蝶是怎样采花蜜 蝴蝶为什么吸花蜜 After entering college,we found,to our surprise,that differences between high school life and college life are great.In high school,we always depended on our parents and teachers to solve all kinds of difficult problems.At college,however,we have to We find ourselves close to reaching our goal. Your weekend tennis must have done you good.怎么翻译 用争先恐后、心急火燎、马不停蹄来写一段话 选用其中两个词写一段话争先恐后 心急火燎 马不停蹄 笑逐颜开 漫山遍野 不以为然 ☆ 求人名 nick vujicic 的读音,麻烦标注一下音标. comment:We are something,but none of us are everything.用英文解释这句话.而且要多点,这是我的ONE minute speech~