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在水里面有一艘船,船上有两个人,一个还撑着伞,还刮风,猜一成语 英语词组：教······ Neither of the novels which are popular with us ___ been translated into Japanese.为什么填has而不是have而前面用are 1、The book has been translated into thirty languages since it （C）on the market in 1973.A.had come B.has come C.came D.comes2、In the past few years,My Heart Will Go On was a popular song among young people,（A）were often heard singing it at 1.The post office is _____the street.Which choice is NOT proper?A.on the other side of B.on the opposite side of C.across D.out of 2.Our business hours are only _______Saturday evenings and Sunday afternoons.A.between B.on C.among D.in 3.Everything _ matlab的矩阵维数不一致>> t=0:0.01:1;>> [a,b]=dsolve('0.02*Dx=y','Dy*0.5+y*12.5=x','y(0)=0','x(0)=1','t') a = 1/(2*exp((25*t)/2 + (5*41^(1/2)*t)/2)) + exp((5*41^(1/2)*t)/2 - (25*t)/2)/2 - (5*41^(1/2))/(82*exp((25*t)/2 + (5*41^(1/2)*t)/2)) + (5 做手打面加碱怎么做 支毛沟是什么? A,B都是整数,A大于B,且AXB=2009,那么A-B 的最小值是多少? 矩阵的维数是什么意思? 关于考过了6级还想进一步提高英语水平我最近考过了6级 不想再刷分了 想再进步一步提高一下英语水平 不太想去看托付 雅思一类成本高的东西 请给我一些比较好的推荐 ,还有去看的书名. 矩阵中什么叫维数 矩阵的维数怎么求?如以下矩阵怎么求矩阵的维数?10 5 9 18 1113 19 6 12 143 2 4 4 518 9 12 17 1511 6 14 19 10 设函数的集合p=｛f（x）＝㏒2（x＋a）＋b|a＝－1／2,0,1／2,1;b=－1,0,1｝,平面上点的集合Q=｛（x,y）|x－－1／2,0,1／2,1;y=－1,0,1｝则在同一直角坐标系中,P中函数f(x)的图像恰好经过Q中两个点的函 已知函数f(x)=㏒a (x+1),g(x)=㏒a (1-x) 求使f(x)-g(x)＞0成立的x的集合. 如图在长方形ABCD中,长方形ABCD的面积是三角形ABE面积的三倍,是三角形ADF的2.5倍,CEF的面积是4平方厘米1、求AEF的面积.2、求ABCD的面积.CD边上是点F，BD边上是点E 已知函数f(x)=㏒a(2-x),g(x)=㏒a(2-x),求使函数f(x）+g（x）前一个括号里改为2+x 不好意思 I just wonder ______ that makes him so excited.A.why it does B.what he does C.how it is D.what it is讲下 原因 分析下 3的1-2x次方-1≥0 哪位有时间教我几句英语词组 一定要会的 1、____in thought,he almost ran into the car in pront of him A、To lose B、Lost C、Having lost D、Losing2、____these pictures,I couldn't help thinking of those days when I was in Beijing and ___from the top of a thiety-storied building,Beijing 函数自对称的点对称和轴对称,函数互对称的点对称与轴对称,他们之间性质差异与应用, 矩形ABCD中,E在BC上,F在CD上,△ABE的面积是4 △ADF的面积是5,△CEF的面积是3 求△AEF的面积 “擎”用音序查字法,是不是应先查音序Q,再查音节qing? 点EF分别在矩形ABCD的边BC和CD上若△CEF△ABE△ADF的面积分别是3,4,5求△AEF的面积S 如图,点O'在圆O上,以圆O'为圆心的圆交圆O于点A,B,圆O的弦O'C交圆O'于点D,求证：D为三角形ABC的内心 如图所示,在三角形ABC中圆O截ABC的三条边所得的弦长相等,求证O是三角形ABC的内心 圆O和圆A相交于C,D两点,A,O分别为两圆的圆心,三角形ABC内接于圆O,弦CD交AB于G,交圆O的直径AE于F,连（1）求证：三角形ACG相似于三角形DBG（2）求证：AC的平方=AG*AB（3）若圆A,圆B的直径分别为6根 圆O与圆P相交公共弦为AB,O,C在圆P上,连接OC交圆P于E,怎么证明E为三角形ABC的内心 吃碱水面有什么好处和坏 怎么背古诗 怎么背诗