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在△ABC中,AB=AC,∠A=20°,D为AB上一点,且AD=BC,求∠BDC. 求解奥数!火急啊!+分!在100个连续的自然数1,2,3..100中,任意取5个数,求证这51个数中一定有两个数,其中1个是另一个的2倍题目错了，是51个数，正确的是这样的在100个连续的自然数1，2，3.。。100 某单位的地板由3种正多边形木板组成,设这3种多边形的边数分别为X,Y,Z 求1÷X+1÷Y+1÷Z 1.已知P为线段AB上一动点,M为BP的中点,问当P在AB上运动（ 不含A.B）时,（AP+AB)÷AM的值是否为定值?若为定值,求出其值,若不为,说明理由.2.接上题：当P点在直线AB上运动时,（1）中的结论是否任然 英语翻译当...的意思 这里没有 所以只能做宾语 You are so tall.Please don't sit( )me.Ican't see the words on the blackboard.A.next toB.in front of C.behind D.in the front of 猪笼草能在猪笼里面灌水吗? 能不能在猪笼草的瓶子里灌水 猪笼草为什么要叫猪笼草?长出来怎么回事猪笼的样子? 初二政治升级考试容易出哪方面的辨析题? 怎样养好繁殖母羊 买繁殖母羊10头好,还是自己养大的母羊繁殖好?,还是买小羊50只好?那个好些?钱用得少些?利润高些?安全? Tony used to ______ to school ,but he is used to ______ to school now .A.walk ,taking a bus B.walked ,took a bus C.walk ,take a bus后半段的is used to如何翻译,详解本题解题思路, He () to school next week.A.doesn't goB.isn't goC.isn't going 一更绳子长5/8米,剪成相等的若干段,一共剪了9次,平均每段绳子长多少米?要算试啊 我的朋友邀请我去看足球比赛用英语怎么说 My friend______me______ ______to a football match. Do you want fovever and Fovever翻译成人名 Fovever Love Because I love Fovever /樱花 for you的意思 Are those girl's c____?Yes,they are.They are nice.求这个空填什么单词. she's known as a girl to those who are free中间的to这个单词怎么理解在这句话里,语法是什么 Are those your pencil s____? 1.He is busy ______ (watch) the soccer match.2.Hurry up!We'll have no time _______ for a reat.A.f1.He is busy ______ (watch) the soccer match.2.Hurry up!We'll have no time _______ for a reat.A.for stay B.with staying C.to stay D.of staying Hệ điều hành :Tất cả các phiên bản Hệ điều hành :Tất cả các phiên bản Window是哪个国家的语言, 北京结婚聘金、聘礼、怎么给?我是北京的我老公是天津的、妈妈说聘金要10万,首饰衣服钱单算,衣服钱不是婚纱,还有钻戒单买,那个聘金是干什么用的?是就给我妈妈的?还是要干什么用?女的家 Are those apples 同义句替换Are those apples 改为单数 刚才弄错 了 How( )those apples are!A big B beautifully It can be a killer. 高一军训感言尽量而且必须催人泪下(被选为最佳答案的关键)(可用条件:我长大想参军;对军人有很深的感情;我爷爷去过朝鲜战场)注意了:尽量而且必须催人泪下(被选为最佳答案的关键)尽量而 May noj t khôg hjêu đâu.hê YêU LầM越南语什么意思谢May noj t khôg hjêu đâu.hêYêU LầM越南语什么意思谢谢 南极昆仑站与极点的距离约为多少千米