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思宝优奶粉怎么样? 介绍春夏秋冬的英语作文 春夏秋冬的英语作文【小学四年级水平】急~ 图中有几个锐角钝角直角 七巧板中有几个锐角、钝角、直角? 怎么画一个包含5个直角,4个锐角和1个钝角的图形 英语作文30词!急 求下列函数的n阶导数（1-x2)^(-1)sin(x)e^x自学党的,求详解（书后只给答案不写过程）表示自己只能做到单个因式求高导,莱布尼兹公式一展开就被搞得预仙预死了. 一个正方形与一个小正方形拼成一个大长方形,大长方形的长是宽的3倍.正方形的周长是小长方形的周长的几分一个正方形与一个小长方形拼成一个大长方形,大长方形的长是宽的3倍。正方形 清末民初,中国有哪些主要的民族资本主义性质企业?促进这一时期民族资本主义经济发展的因素有哪些? I can see many birds in the tree.(对many birds 提问） 这件事牵动着我的心 作文 Thare are many birds in the apple tree对many birds提问 急求作文：这件事牵动着我的心 If there are ten birds in the tree,I catch qne of them .How many birds left in the tree这是一个谜语拜托啦 "How many birds are in the tree?我问的是are in the tree和are there in the tree是否都对？而不是in the tree和on the tree的区别——这个我知道 负数无理数次方是什么情况请解释为什么不存在 ok?别是作文 ok? 速求10个新颖的写小伙伴的作文题目,如：“疯丫头” 写我的小伙伴的作文题目 急需!写我的朋友或小伙伴的作文的题目 新颖点 不要《我的朋友》《我的小伙伴》那些,太俗了 写小伙伴的作文题目 今年四级作文题目是什么呀?考过的小伙伴说… 推荐点儿大家用过的好用的英语词典,电脑上的离线的.和高阶的英语纸质词典, 《南京条约》签订日期? 在鸦片战争以后,中国百落,签定屈辱条约,有《南京条约》,《马关条约》...其中的《南京条约》什么时间由谁签定? 关于英语情态动词的问题dare和need既是情态动词又是实意动词,但情态动词和实意动词的用法又不一样,情态动词后只能接动词原形吧,那如果要造一个句子,要怎么区分是用实意动词还是情态动 Long,long ago,as the birds flew over the world,they saw that men had a beautiful thing and it was a bright,burning (燃烧的)thing.Men cooked their food and kept themselves warm with it.The birds thought life would be better if they too could have t 情态动词的英语题-if he ____,he that food.-luckily he was sent to the hospital immediately.A.was warned;would not takeB.had been warned;would not have takenC.would be warned;had not takenD.would have been warned;had not taken The birds flew away in all d______ when hearing the gunshot. 英语情态动词问题Don't throw the bottles away.They _______in the future.A)may need B)are needed C)can be needing D)might be needed我要知道原因 When they see birds fly high out to the sea ,they know it is a n____ dayWhen the weather will be b_____,the birds come back to beachFrogs are making big n_____in the pool ( ) At goung age ,they flew kites and watched the birds_____.A.flying B.to fly C.flew D.to flying要原因