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在四边形abcd中对角线acbd相较于点o且ac=bd,e,f分别是ab,cd的中点,ef分别交bd,ac于点g,h.求证og=oh详见九上数学书P39,第十三题 中国的人 英语怎么写? 高分求以by结尾的英文词组,做名字用,要有深意 I want to tell you about how can keep healthy ways.病句么?如果是,请告诉我错在哪里. I want to tell you how can keep healthy.为什么是病句 邹粤语怎样读? 洗手间粤语怎样读 decision是什么意思? decision的商业意思 “弘” 这个字粤语怎么读? “弘扬”的弘粤语应该如何读?如题：是读“虹”带是“宏”? 弘 读什么? 用广东话“弘迪”是怎么念? rational的意思 rational calculations什么意思 rational approach rational rotation semi-rational 是什么意思 To keep it ( ),you must water the tree as often as possible.A:alive B:living C:lively I want to be___.What should I do?First,you must keep __every day.A.health;happy B.healthy;happyC.health;happily D.healthy;happily 鑫字粤语怎么读 请问鑫字用白话,就是粤语怎么读呢,还有雏菊的雏字 She studies best.中best做什么成份 谁知道带有“舟”字的成语,就像“同舟共济”这样的,越多越好! Daniel does not know what he should do next.改为同义 风雨同舟与同舟共济的区别还有 专心致志与聚精会神的区别 I think he's ___ best srudent in our class. 怎样纠正音标发音的口腔动作,提供一下方法 I don't know what I should say at the party I've got a present from Tom. However really don't know what I should send him_____return.A.for B.in C.as D.on选哪个?为什么? 中国每天几点枪毙犯人