淘师湾作业网登录账号

如图,AD∥BC,∠ADC的角平分线交AB于点M,且M是AB的中点.问:△MDC是否是直角三角形 (请写出过程 ) 已知三角形ABC和三角形ADE都是等腰直角三角形,其中∠ ABC= ∠ ADE= 90度,点M为EC的中点,1）当点D,E分别在AC,AB上时,求证：三角形BMD为等腰直角三角形；2）将三角形ADE绕点A逆时针旋转45度,使点D落 how many在宾语从句的用法he asked how many children were there in the class?he asked how many children there were in the class?请问哪句对呢?为什么?我记得是how many在宾语从句中是不用变成陈述句.那can you tell me how m 若x,y是等腰三角形的两条边,且满足4x^2+10y^2-12xy-4y+4=0,求△ABC的周长 "HOW MANY"在宾语从句中的用法宾语从句中how,when,where等等的用法我都知道,动词要后置.可是HOW MANY好象是个特例?(比如说He asked what was the matter.)HOW MANY 所在的宾语从句也是特例吗?因为我在哪里好 为什么上数学课看着黑板或老师想睡觉? 古诗《田园乐》怎么写（包括作者） 古诗的意境(田园乐)田园乐 王维 桃红复含宿雨,柳绿更带朝烟.花落家童未扫,莺啼山客犹眠.虾米意境? Which would you like for bread?white or whole wheat麻烦把句子分析一下 which和for 又是咋回事 He bought two loaves of bread.是对的吗 She reached the top of the hill and stopped ___on a big rock by the side of the path.A. to have restedB. restingC. to restD. rest应该选哪个? ____and out of breath,we reached the top of the mountain and stopped to admire the beautiful sceneyA Tiring B Tired 请问选哪个 She reached the __________ of the 100m hurdlesRT 求答案 A.line B.flag C.wood D.final 求各国古名... 作文 来高中的目的 古代世界各国都有什么酷刑? 古代世界各国人口分布 what's made Jason so upset?A.Lose B.To lose C.Because of losing D.Losing我觉得选D,可书上答案却是A~我郁闷请问2楼的大哥，这里是动词好不好 she is very l ,and she do not want to do anything 填空 代词练习题:Sam is looking_____in the mirror.横线上填什么? Sam is look same as me.Sam长得和我一样,能这样说吧? 小学奥数（0-8这9个数字,每个数字刚好用一次,组成3个三位数,使得其中有2的倍数,3的倍数,4的倍数0-8这9个数字,每个数字刚好用一次,组成3个三位数,使得其中有2的倍数,3的倍数,4的倍数,.16的倍 He is behind me 同义句I____ ______ _____ _____ 寻隐者不遇改成故事500字 Look!The boy is so s_____that he can hardly openhis eyes. 单项选择：She is ___ at singing.And I can play the guitar ___A.well;goodB:well;wellC.good;wellD.good;good 我们数学上到用频率估计概率,我总是觉得这样有误差,比如说你投1000次硬币万一1000都正的呢,这样不是不准 寻隐者不遇这首诗描绘的情景写一篇作文300字左右 寻隐者不遇诗中图画的情景写一篇作文300字左右 二十四孝图简介快 开学前想帮孩子找个好点的学英语的机构,孩子英语基础不错,但从没开口说过,希望锻炼她交流运用能力在长 高一英语（21）请大家翻译一句话It is a good choice to do (gym-based )exercise.