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一、根据句意和提示写出单词,完成下列句子1.It's getting late now.Can you see clearly?Why not turn on the l_________ on your desk?二、阅读短文,填入合适的介词Dear KathyI'm in New York now.It's a very big city.There are man 1 is this theGreens'house?No,（）is over thereAHis Btheir Ctheirs Dthem2 Is thier any difference between your ider and ()?A he B his C she D her3 The skirt () is made of silk is very expensive .I can't afford itA what B/ C that D it4 When I returne 适当形式The ---- (connect) of our telephone took several hours.She went away and soon ---- (appear) in the distance.选择Today is her birthday.A delicious cake ---- her.a.makesb.makec.was make tod.was make forIt's said that an airport ---- in Ya 老师说以前说电压越大,电流越大,那现在学了欧姆定律后,在串联电路中电压之比等于电阻之比,也就是说电阻越大电压越大被,那不是电阻越大电流越小吗,如此说不是和前面矛盾了吗,求正解. 初中物理懂得进,帮下忙哦为啥为啥 解析下 额 好的都采纳 放心 小轿车的功率为66KW,在高速公路上行驶的最大速度可达30m/s.试求小轿车在高速公路上行驶时的最小牵引力. 设集合M={-1,0,1},N={2,3,4,5,6}...对于答案有些疑惑设集合M={-1,0,1},N={2,3,4,5,6},从M到N的映射f满足条件：对每个x属于M,都有x+f(x)+xf(x)为奇数,那么映射个数为 x为偶数即x=0时,f(x)=f（0）=3或5时才满足x+f( 如图123在下列方程中. 已知椭圆C的左右焦点坐标分别是（-√2,0）,（√2,0）,离心率是√6/3,直线y=t与椭圆C交于不同的两点MN,线段MN为直径做圆P,圆心为p.设Q（x,y）是圆P上的动点,当 t 变化时,求y的最大值是多少 一道数学题：已知椭圆C：[x^2/a^2]+[y^2/b^2]=1(a>b>0)经过点A(1,√3),且离心率e=√3/2第一问,求椭圆C的方程第二问,过点B(-1,0)能否作出直线l.使l与椭圆C交于M.N 两点,且以M N 为直径的圆经过坐标原点O 如图,已知动滑轮重50N,绳子自由端拉力为250N,小丽以此力把物体均速上升了6m,共用了10S,求：1小丽做功的功率2滑轮组的机械效率3若物体的质量为m,以此滑轮组来提升此物体,求滑轮组机械效率 这张图的方程式是什么?是怎么得出来的? 这张图的方程式怎么写?这张图的方程式是什么?怎么得出来的? 一根电线长32米,第一次用去了全长的20%、第二次用去了全长的十分之7.两次共用去多少米?还剩?第二次比第次多用去?m 大学 线性代数里行列式的问题A0 1 1 1 1.1 1 A1 0 0 0 .01 0 A2 0 0 ...O; ; ; ; ; ;;; ;1 0 0 0 0.An 还有 X A1 A2 .An-1 1A1 X A2 .An-1 1A1 A2 X .An-1 1; ; ; ; ; ; ； ;A1 A2 A3 .X 1A1 A2 A3 .An 1 图中方程, 改句子, 有100米电线,第一次用去全长的10分上3,第二次用去剩下的20分之7.(1)两次共用去多少米?(2)还剩多少米 已知a.b都大于0且a+b=19 则根号a+1+根号b+1最大值是多少?怎么求的 初中英语:完成句子1,I am going to get up earlier and read english every morning___________(从现在起)2, Mr Feng is always___________(准时)3,You'd better_____________(赔偿)the lost book4,_____________(真可惜)!Why didn't you come to my 求初中英语完成句子答案(三十一)1.全国降半旗向地震中死难的同胞致哀Flag across China_______________half to mourn for those who died in the quake.2.什么使他与其他的学生不一样呢?_____________________________from 等腰三角形一腰上的中线把这个三角形的周长分成15cm和11cm两部分,则此三角形的底边长是__________.速求 等腰三角形一腰上的中线把这个三角形的周长分成15cm,11cm的两部分,则此三角形的底边长是多少 大学行列式计算（数学）将Dn按第一列展开为什么等于Dn=(a+b)Dn-1 - abDn-2Dn-1和Dn-2有什么关联吗?Dn=(a+b)Dn-1 - abDn-2使用有什么条件限制吗求详解 UG建模时,“提取偏置曲线“功能怎么使用 几道初中英语改写句子I hope that you’ll have a wonderful holiday（保持句意基本不变）I ____ _____ a wonderful holidayI can' make up my mind if I will go to my friend's birthday party（保持句意基本不变）I can't make up my 初中英语语句改写!1.I think she will be a doctor in five years (engineer)2.i will play the guitar in then years (violin)3.she had a cat five years ago (rabbit)4.she studies in college today (high school)分加改写成否定句,疑问句,问 初中英语句子改写将下面句子改成间接引语1.The teacher asked John:"Where are you going?"2.Mary asked:"Should I do this?"3.He said to us:"Go to school now"4.Michael said:"I have lived in China for 3 years"5.Maria asked Jane:"Can they g 按照要求完成句子1.His father has been to America（ twice）.(对括号内部分提问)2.Linda is taller than any other girl in her class.(改为同义句) Linda is __________________________ girl in her class.3.improve ,why ,you ,do ,English 设全集I={1,2,3},A是I的子集,如果把满足M∪A=I的集合M叫做集合A的“配集”,则当A={1,2}时,A的配集共有A.1个 B.2个 C.3个 D.4个 集合M={-1,2} 集合N={-1,2},求M I N . 设三维随机变量（X1,X2,X3）的联合概率密度函数为：f（x,y,z)={1/8π^3(1-sinxsinysinz)0