8.正六边形ABCDEF的对角线AC、CE分别被内分点M、N分成的比为AM:AC=CN:CE=k,且B、M、N共线.求k.(23-IMO-5)【分析】【评注】面积法9.\x05O为△ABC内一点,分别以da、db、dc表示O到BC、CA、AB的距离,以Ra、Rb、Rc表示O到A、B、C的距离.求证:(1)a•Ra≥b•db+c•dc; (2) a•Ra≥...
\x05\x05for(i=0;s1[i];i++)//判断是否有小数点(1)\x05\x05 if(s1[i]=='.')\x05\x05\x05 break;\x05\x05k=0;\x05\x05for(j=i-1;j>=0;j--) //存整数部分(2)\x05\x05\x05a[k++]=s1[j]-'0';k=0; //存小数部分,并把个位作为吧b[0](3)...
卷王再发力!比亚迪全系车型将搭载“天神之眼”高阶智驾系统。在近日举行的比亚迪智能化战略发布会上,比亚迪董事长兼总裁王传福正式宣布:比亚迪将全系搭载“天神之眼”高阶智驾系统,开启“全民智驾时代”。其中20万元以上、15万元至20万元、10万元至15万元级别的车型将全系标配“天神之眼”。10万元以下的车型多数将搭...
B.Mr P. Clarke would like a big table. C.Mr P. Clarke would like a quiet table. 听第7段材料,回答第9～11题. 9.What is the woman doing? [ ] A.She is learning spoken English. B.She is looking for a bank. C.She is teaching spoken English. 10.Where does the conversation take ...
The watermelons are big!看看,他在干嘛?他在搬西瓜!香蕉去了哪里? 小猴子能搬这么多西瓜回家吗?他接下来会去哪呢? The strawberries look juicy. He picks some. 小猴子现在在哪?他在摘什么?什么样的草莓是最好吃的? 看来,小猴子很聪明,他知道...
一些六年级应用题,最先把答案告诉我的并且完整的给予最佳答案,我不给分最后一题只要答案1.在绿化祖国采集树种的活动中,某校四年级5个班级,每班采集树种20千克,五年级3个班共采集60千克,平均每班采集树种多少千克?\x05\x05\x052.一张长12.56米、宽3米的长方形苇席,围成以长为底面周长的圆柱形粮囤(接头消耗...
导航型GPS接收机可显示当地的三维坐标(经度、纬度、海拔高度)、动态指示前进方向、导向、设定路标、生成行进路线、显示当地日出、日落时间[早期的GPS接收机只能显示当地日出、日落的格林尼治(世界标准时间)时间]。据此回答8～9题。8.某日一外国游客在杭州时,其早期GPS接收机屏幕上显示的日出、日落时间分别是21:50、10...
1.nice_ nicer 2.big_ bigger 3.safe__safer 4.ugly- more ugly/uglier 5.pvetty__prettier/ more pretty 6.beautiful___more beatiful 7.happy__happier 8.sad__sadder 9.cheap__cheaper 10.red__redder 11.bad__worse 12.well__better 13many__more 14.far_farther(指距离)/further(指时间)这些...
When you are young, you may want several love experiences. But as time goeson, you will realize that if you really love someone, the whole lifewill not be enough. You need time to know, to forgive and to love. Allthi...
Mychildren are growing up fast. My daughter is 16 and my boy is already in juniorhigh school. ___ they get ___ (big) our house seems to get smaller.So we want to sell some of our things in a yard sale and give the money to a...