大学英语iv第4次作业

别用方程,用式子.钟面7点十五分,时针与分针的最小夹角是多少度?可以直接给答案. 有点难,用式子,别用方程把一个长方形的长增加5厘米,宽增加8厘米,就得一个正方形,面积增加220平方厘米,求原长方形的面积. 人生的大与小 一滴露水可以藏海,一片叶子可以知秋,在一水一叶之间蕴含着多少人生况味啊.天空之所以美丽是因为有小鸟裁剪云朵,而人生之所以可贵,是因为有小烦恼小痛苦装点岁月.小烦恼 人生的大与小 阅读 快哦.一滴露水可以藏海,一片叶子可以知秋,在一水一叶之间蕴含着多少人生况味啊.天空之所以美丽是因为有小鸟裁剪云朵,而人生之所以可贵,是因为有小烦恼小痛苦装点 如图,四边形OABC的四个顶点坐标分别为O(0,0),A(8,0),B(4,4),C(0,4),直线l:y=x+b保持与四边形OABC的边交于点M、N（M在折线AOC上,N在折线ABC上）.设四边形OABC在l右下方部分的面积为S1,在l左上方的面积为S2 如图所示,四边形OABC是正方形.（1）写出正方形各个顶点的坐标；（2）将正方如图所示，四边形OABC是正方形。（1）写出正方形各个顶点的坐标；（2）将正方形向下平移2倍开根号3个单位得正 你认为举办民族之花大型评选活动有什么重要意义 高二竟赛题:三个角依次成等差数列,它们的正弦值依次成等比数列则三角形是什么三角形?三角形的三个角依次成等差数列,它们的正弦值依次成等比数列.则三角形是什么三角形? 【数学】-（+9）和+（-9）互为相反数吗?如上. “花儿会”是哪个或哪些民族过的节日? 别用方程,用式子某校六年级有三个班,甲班的人数占全级人数的二十八分之九,乙班的人数比甲班多10人,甲乙两班人数的和与丙班人数的比是5比2.六年级三个班共多少人? “about”在下列句子中是什么译意"he can get up for about two hours each day"本句中的“about”是什么译意?该如何理解“about”在该句子中的意思 英语翻译they are square at the bottom,with four smooth sides and a point on top 这里的 a point on top 朝上的尖吗? （ ）——满肚子话说不出如果是好心人的话, 根据所给的语言环境填上合适的歇后语1.他心里挺清楚,有满肚子学问可就是不善于表达.真好比(　　　　）． 怎么样防治被瓢虫咬?我们家出现了好多那种黄色的小瓢虫,开始以为没什么,后来晚上睡觉时被它们咬了好几口,皮肤上有许多两个并排的小黑点,又痒又疼,有什么办法可以把它们驱逐吗?涂点驱 There was a big drought in southwest China last year.Most places got less __1_ than usual in Guangxi,Sichuan,Guizhou,Yunnan and Chongqing.People didn’t have __2_ water to live.Crops __3_ before the harvest.People from __4_ places in China gave help 填一个完形填空词：don't,when,find out,write to,they,most of,with,be,have,thing.Everyone needs friends.We all like to feel close to someone.It is nice（ ）a friend to talk,laugh and do( )with.We would feel lonely if we never have a friend.N 告别权力的瞬间 读后感 虽然有满肚子的文才,却表现不出来可以用什么歇后语代替 野有什么组词? 这篇完形填空怎么写 告诉我应该怎样填这篇完形填空.Katy and Sandy are 1.They live in town.Katy is 2 than Sandy.She likes living in town very much.Katy thinks living in town,She thinks the lights at night are more 4 than the stars.She likes to read,and reads 为什么lg2×lg3=lg3啊?lgX×lg8=lg2×lg3为什么lg2×lg3=lg3呢3lgX=lg3x³=3 这篇完形填空.求解,填空 这篇完形帮忙填下Ampere(安培）was a famous scientist(科学家）．He liked to_himself busy all day long both at home and in his Office.Sometimes he found_very hard to work for a long time because many_came to talk to him at home.In order 来帮我写篇完形填空Ramesh's childhood was fun.He played happily every day,but he wasn't much trouble to his parents as he helped with the housework 36 he was only ten.However,there was only one drawback,Tamesh 37 studying,He just played insid 化简 (lg2+lg3)^2 - 4*(a^2+lg2lg3) > 0 所有公共场合、地点的英文名称谢谢了,公共场、地点的名称、、就像邮局、超市、家、卧室什么的都行..越多越好! 问一个弱智的数学问题.y+2x=0这个图到底是什么样子的啊,带入X=0的话,Y=0,也就是会过零点,但是我变成y=-2x,是一条斜率为-2的直线,而且在一象限,根本不过0点啊. 英语翻译 A question about marionberry.What is marionberry in Chinese?