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一道轴对称问题如图,线段0B的一个端点0在直线AB上,以OD为一边画等腰三角形,并且使另一个顶点也在AB上,这样的三角形能画多少个.要求：准确. 一道轴对称题已知平面直角坐标系中,A、B坐标分别为A（2,-3）,B（4,-1）若C点坐标是(a,0),D点坐标（a+3,0）,问当a为何值时四边形ABDC周长最小? 关于轴对称的一道问题在世上画出五个点 任意3个点组成的三角形都是等腰三角形 问这5个点该怎么放?画出你认为可能的一种情况在今天晚上之前 “在世上画出五个点” 是 “在纸上画五个 一般来说,生物进化的总趋势是一般来说,生物进化的总趋势是_______、_______，________。 一道轴对称的题,在△ABC中,AB=AC,点D、E分别在AC、AB边上,且BC=BD,AD=DE=EB,求∠A的度数. 富光动感滤叶太空杯材质含有双酚A吗 猫抓到老鼠后,是怎么样把老鼠吃掉的? 猫捉到了老鼠,会不会把老鼠给吃掉的呢? 英语翻译准确翻译 英语翻译文言文翻译 英语翻译 英语翻译信陵君杀晋鄙，救邯郸，破秦人，存赵国，赵王自郊迎。唐且谓信陵君曰：“臣闻之曰，事有不可知者，有不可不知者；有不可忘者，有不可不忘者。”信陵君曰：“何谓也？”对 富光塑料杯有毒吗 孔文举说:“想君小时,必当了了.”让陈韪感到大踧踖的原因是什么 Emily took a little cat to home yEmily took a little cat to home yesterday.改错. Emily gives a big present to her sister on the birthday.(对her提问） 知恩图报是俗语吗 心中有佛看见什么都是佛,心中有屎看见什么都是屎.这句话对吗? Now I am a boy of 16.I have a lot of friends.But I like __1__ of them better than any other friend.We became friends when I began to go to school.We have been together __2__ nine years.He knows everything and remembers everything even happened in the 英语题目 英译中Bob stayed at home with his mother because he had no f__1__to play with.Soon they heard someone k__2__at the door.And his mother went to o__3__it. In came a w__4__with red hair.She said to then that she was thrir n__5__ and h luckluckyluckilyspeakharbor 描写人物外貌,衣着的四字词语 The little girl walks across the forests by herself.找出句中的错误之处并改正 A trick One day,a gentleman is walking in a street.He sees a little girl ringing a doorbell on tipA trickOne day,a gentleman is walking in a street.He sees a little girl ringing a doorbell on tip toe.But it's too high for her.So the gentleman says to This is the thinnest board I can find in this shop.翻译此句 I b_____ this shirt in the clothes shop yesterday 描写古代男、女外貌以及服饰的句子.要详细点、优美点类 英语鲫鱼刘怎么拼 为什么猩猩是人类的祖先 刘小宁怎么拼 英语 the shop for clothes还是the shop of clothes at the clothes shop 与 at the clothing shop有区别吗