最后用英语怎么说

林林做了一个圆柱形的灯笼（如图）.上下底面的中间分别留出了78.5平方厘米的口,他用了多少彩纸?（圆柱形灯笼）直径20厘米, 林林做了一个圆柱形的灯笼 上下地面分别留出了78.5平方厘米的口 他用了多少彩纸 she was late for he english class this morning.how come?,he never came this morning怎么翻译how come?as far as i konw...... 帮忙解决一道证明题：先凑合着以（ ） 代表绝对值符号.（a）< 1 ,(b)< 1 ,试证明：（a+b）/(1+ab) < 1 帮我解决一道证明题~已知：关于X的一元二次方程(a-c)x*x+(c-b)x+(b-a)=o有两个实数根.求证：2a=b+cx*x(x之间是乘号）两实数根相等 帮忙解决一个证明题问题是已知一个四边行与它的外接四边行,四条对角线交于一点,要证这两个四边行是平行四边形． The bike____last year.a.bought b.has been bought c.was bought d.had been bought.选哪个?我觉得是c,因为last year不是一个时间段,但答案是b,我就费解了~请问高手们为什么答案是b.thank John bought his bike at the end of last year =John—— ——his bike ——the—— of last year 改写 She demanded that he ( ) her the money he borrowed form her.A returnedB returningC should returnD returns sportsman all over china went to nanjing to ______the 10th national handsa last october.为什么填attend不是take part in?是national games 以"It is over a year now since Cthya came to china"的阅读 She kas been to Beijing_______(two) since she came to China.括号里填什么 Mary is_____the police station(警察局）,but she can't ______it. 一个圆形餐桌的直径是2米,它的周长是多少米?面积是多少米? 一个圆形餐桌面的直径是2米,它的周长是多少米?它的面积是多少平方米?如果一个人需要0.5米宽的位置就餐,这张餐桌大约能坐多少人? 圆形餐桌面儿的直径是2米,它的周长是多少米,它的面积是多少平方米? 请帮忙做一道证明题,已知RT△ABC,∠C=90°,D为BC边的中点,连接AD,过C做垂线CE与AD交与点M,与AB交与点E,连接BM,求证：∠ABC=∠BMD.） the iberians是什么意思 牛津进阶英汉双解词典和中阶英汉双解词典的区别? 牛津进阶和高阶词典那一个更好?区别在哪? the professional是什么意思 如何判断句子里哪些是主语,谓语,宾语主语,谓语,宾语,组成一句话 华尔街英语的口语教学怎么样?想重点学习英语口语,选择华尔街英语行吗? The Professional Development什么意思 华尔街英语的口语教学怎么样啊?口语实在是烂! 解一道几何证明题引三条直线分别平行三角形的三边,每条直线与其所平行的边之间的距离等于该边的长度,同时,对于每条边,平行i、于它的直线和该边所对顶点位于该边的两侧.证明：三角形 we manufacture the professional look for managers 一道几何证明题,直角梯形ABCD,角C=角B=90度,E是BC上一点,连接AE、DE.已知AD=AE,AB=BC,求证CD=CE,最好很快有 什么意思the Professional Engineers Act.Revised StatutesProfessional Engineers Ontario,25 Sheppard Ave.,W.,Ste 1000 Toronto ,ON,M2N 6S9 416 224-110这句也帮忙翻一下，国外的简写不知道啥意思 the pro’s and con’s 啥意思?I make important decisions by examining all the details and then weighing the pro’s and con’s for each decisionthe pro’s and con’s 可否换成the advantages and disadvantagesmzymy翻译的好象不通顺啊, 华尔街英语的口语教学是不是很牛? by the beatles是啥意思