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如图,已知三角形ABC中,∠ACB=90°D为BC上一点,DE⊥AB,若∠DCE=∠DEC,已知CD=1.5,BC=4.（1）请说明AC=AE的理由；（2）试求AB有多长 如图,已知在△ABC中角ABC=90°,D为BC上一点DE⊥AB,若∠DCE=∠DEC,已知CD=1.5,BC=41）请说明AC=AE的理由；（2）试求AB有多长好的话 英语翻译We thank you for your email enquiry for both groundnuts and Walnutmeat CNF Copenhagen dated February,21.}f2]Eaw&W As you are aware that there has lately been a large demand for the above commodities.Such growing demand will likely result We ___thank Jane.A .both must B.must both 1.Don't ____me,We _____thank Linda A.thank ;must both B.thank;both must 把这件事既告诉我又告诉她.英文翻译 用both ...and... 英语作文 我难忘的暑期旅行 My unforgettable summer trip 英语作文:my trip plan；60字左右,是关于暑假的英语作文！ The twins___Canada for three weeks.A.has been to B.have been to C.have gone to D.have been intwins解释为双胞胎.那要不要把twins看作是一个整体?还是把twins看作是两个人? 地球绕太阳转一圈要多久? 为什么说我们汉字即使有那么多的形声字,也不妨碍它属于表意文字体系? 如图,E是AB上的一点,（1） 已知∠DEC=∠ADE,可以判定哪两条直线平行为什么?（2）已知∠AEC+∠DCE=180度（3）已知∠AED=∠B,可以判定哪两条直线平行?为什么? 双因素理论的基本内容是什么?在现实管理实践中如何运用这种理论?哪位高手帮帮我吧!在下表示感谢 简述双因素理论的基本观点. I never been there before=I haven't been there before? Some students haven't been there I never been there before.--Translate to MandarinI have never been there before=I haven't been there before? Is this sentence correct?1）I never been there before=我从没到过那里.2）I haven't been there before?=我从没到过那里.I have ju 地球绕太阳转一圈大约是几年? 植物名称和植物生长地点校园植物记录表 校园动物记录表 植物名称 生长地点 动物名称 经常活动的地方 1 2 3 4 5 6 7 8 9 10 11 不是校园的也行 My Trip PlanI went to ( ).It is ( )there.I am doing to go there with ( ) .We are going to go there by( ).I`m going to ( ),( ).I`m going to take ( ),( )with me.It will be fun.I can have a good trip. 英语作文：my trip plan my trip plan寒假的英语作文I want to go to____.It is______there.I am going to go there with_____.We are going to go there by______.I'm going to______________________.I'm going to take________________________________with me.It will be fun.We wil She talks as if she had been there before是什么从句 I had been there before我去过那 这么说对吗 the house looked stangely familiar to her,though she knew she'd never been there before请问这句话的意思,并分析其结构, there,Lisa,speak,before,can,been,because,has,she,French 陈述句 连词成句 在这大好的春光中,人们把希望的种子撒到了地里,播种下下一年的希望 改病句 三月的瘦西湖盘是春暖花开的时节 病句怎么错了啊? 为什么说我们的汉字即使有那么多形声字,也不妨碍它属于表意文字体系 为什么说我们汉字即使那么多形声字,也不妨碍它属于表意文字体系? 西藏生长在冰雪中的植物是什么 海水中哪些元素对植物生长有害呀?