中国海监

数学题,初二 如图,平面直角坐标系中,矩形OABC的顶点如图,平面直角坐标系中,矩形OABC的顶点A（6.0）,B(6,4),D是BC的中点,动点P从点O出发,以每秒一个单位的速度,沿着OA,AB,BD运动,设P点运动的时间 如图,矩形OABC顶点A（√3,0）C（0,1）,将△AOC沿AC翻折得△APCP点坐标为（ ,）若将△PCA绕CA中点M逆时针旋转90°到△P₁C₁A₁的位置,A₁的坐标为（ ,）在图中画出△PCA和△P₁C̀ 数学题如图1,矩形OABC的顶点B在直线y=4/5x上已知OA=10.如图1,矩形OABC的顶点B在直线y=4/5x上已知OA=10.1.求BC两点的坐标2.如图二过点B的直线与x轴交与点D,连接CD,将△DCB沿直线D翻折,使C落在x轴上的E 一道英语选择题-时态-- I heard that Fred lost hisjob at the factory.Is it true?--Yes,it is...and it's really a shame.He________there for a long time.A.had worked B.worked C.works D.had been working 选哪个,为什么?不确定答案的朋友 迈克尔.乔丹的英文名叫什么? 一道有关时态的英语选择题~Oh,it’s you.I’m sorry I _______ know you _______ here.A.don’t; are B.didn’t; areC.didn’t; were D.don’t; were这道题选C,为什么不选B呢 中文名字转换英文名我的名字叫赵玉婷,我想转换个英文名字,麻烦帮一帮忙. 乔丹美语怎么样? 【英语】一道关于时态的选择题I'm sorry I can't tell you all.I missed half of what he ( ) because someone behind us was talking loudly.A.was sayingB.had saidC.saidD.has said参考答案是C,为什么不选B? 乔丹用英文怎么读? 汉语对某写些动物叫,有其相对固定的词来描绘,如马嘶.请写出描绘下列动物叫时用的词狼_____虎_____猿_____狮_____鸟_____ 什么AA制 猥琐,是啥意思啊? 描写梅花样子的词语 We found Mary's brother to have____more story-books than Ann's.A.much B.too much C.by far D.far为什么选A另外.find sb. 后面加不定式是表示什么感情? My brother like reading.He ______more than 100 books.1.My brother like reading.He ______more than 100 books rencetly.2.My brother like reading.He ______more than 100 books since 2011.A.buys B.bought C.has bought D.has had Mary has ---story-books.She has----story-books than kate.A.many,more B.most,more C,many,most Kate has a quarter more books than Peter and Peter has a third more books than Jill.Altogether they have 120.How many books does each person have? 翻译一下,谢了 英语翻译 若f（x）=log4（4^x+1）+kx(k属于R)是偶函数,试求方程f（x）=1/2x+6的根的个数 已知函数f(x)=x^2*log4(a),如果方程f(x-1)+2x=0无实根,求实数a的取值范围 设f(x)=x(x-1)(x-2)(x-3),则：方程f′(x)=0,在〔0,3〕内的根的个数是多少? 寓意歇后语 一道关于时态的英语选择题--Why don't you drive to work?The public bus can be a little bit crowded sometimes.--But my car ___ at the 4S dealter.A.has been repairedB.is being repairedC.has been repairing答案:B我觉得ABC这三个答案都 纨绔这两个字怎么发音, （纨绔）这两个字应该读什么啊 如图矩形OABC的顶点A,C分别在x轴和y轴上,B的坐标为（2.3）,双曲线y=k/x（x＞0）的图像经过BC中点D交AB于点E,连接DE（1）求k的值及E的坐标（2）若点F为OC上一点,且△FBC和△DEB相似,求直线FB的解析 明星这个词是什么时候出现的? 起明星这个词中,哪个字写错了? 明星这个词中星是什么意思 李白的哪篇词中有＂明星＂这个词? 紧急,几道关于时态的英语选择题1.I know a little bit about Italy as my wife and I ________ there several years ago.A.are going B.had been C.went D.have been 2.The flowers were so lovely that they __________ in no time.A.sold B.had been so 请帮我做几道英语选择题.分别说明下 是什么时态1.I won't lend you the book until I ( ) reading it.A.will finish B.have finished C.shall finished D.will have finished2.Helen ( ) her keys in the room so she had to wait until her husba