黄哲锋

几何题一道,急救!分别以△ABC的三边为其中一边,在BC同侧做三个等边三角形：△ABD,△BCE,△ACF,求证：AE,DF互相平分. 几何题!急救!直线L交反比例函数y=3/x于点A交X轴于点B,且点A,B与坐标原点构成一个等边三角形,求直线L的解析式,请给我一个大概思路,不要求具体解题, advantage意思 英译中 Our romance gets to be better.这是对一个人说的话希望汉语优美~ Try our best to be better and better!这句话有没有问题,可以作为口号吗?或者我们会越来越好可以说 We will be better and better. A car went by me when I was flying a kite.(改为同义句）A car（ ）（ ）when I was flying a kite. 几何,已知在三角形ABC中,角ABC=3角C,AD是角BAC的角平分线,BE垂直AD于点E,求证：BE=1/2(AC-AB) 急救!如图所示,在△ABC中,AD是∠BAC的平分线,以C为圆心,CD为半径的半圆交BC的延长线于点E,交AD于点F,交AE于点M,EF分别交AB、AC于P、Q,且∠B=∠CAE,FE:FD=4:3.(1)连接DQ、DP,求证:APDQ是菱形;(2)求∠AED的余 促的字母和音序分别是什么 非常高兴,网络用语,喜什么奔的 凝重的音序字母是什么? 音序是字母的大写吗 advantage 怎么拼 我问的是音标哦 advantage of 在……方面有优势吗?那么，have the advantage of the environment 意思是说在环境方面有优势咯？ hitting the books 啥意思?hitting the books 是撒子意思啊 Thant' s my eraser改为否定句 什么是Theory_of_Comparative_Advantage? What are the similarities and dissimilarities between the theory of absolute advantage and the theory of comparative advantage? 泡菜什么意思 泡菜人是什么意思? I have A dream because seeing Y0u happy makes me happy i remenber seeing her once.为什么 用seeing? You really forgot us once to be happy? 关于几个单词的美式发音美式发音中,a的音常读成[æ],如ask.那么bath,calm,father,vase,castle的读音各应是[a:],还是[æ]?And why What's wrong with you,Ted?You don't look well.回答：A not at all.B That's all right.C I fell sick D I go to bed early 一道很难的英语选择题选择替换第一个逗号以后的部分：题干：Following a year of fast development,by the first quarter of this year,China has had about 1,100 e-commerce websites.选项：A.China had about 1,1oo e-commerce websi 骑马与砍杀泡菜我想知道怎么才能搞好国家的关系啊?（注意是国家不是国王）不要说帮敌对国家打仗或者引土匪打商队帮敌对国的镇长做任务,好像没用啊?阵营关系一直是负的.顺便问一下声 “Yes, I have glasses.”的问题该怎么提? 英语好的进.不是很难、the bealtiful girl_--------came have last satuaday is my girlfriend.A who B whom 我想问的是.为什么不选B呢?B有什么错呢?在什么情况下可以用B为什么 whom 就不能做主语呢？ 目前共发现多少个星系? _have a pair of___glasses/ai/ To save class time,our teacher has students do half of the exercise in class and complete the other half for homework.A.us B.we C.our D.ours选A 为什么要选A?其他不行吗?I want to know A.what the matter is B.what the matter was C.what's the m