已知实数xy满足x平方加y平方等于1.求y2除以x1的取值范围

求初二下学期英语单词读法的录音 找初二英语单词的录音谁帮我找一下初二（外语教学与研究出版社）英语（上册）单词录音.要mp3格式的 求新目标初二上册英语单词录音?发音准确就行,如果有我奖分. 句型：Then we need you to help with sports for English-speaking students.1.句子中you to help【你帮助】为什么还要加个to?2.句子中English-speaking[说英语]为什么要把speak放后边,用横杆连着,speak还要加个ing? 高一的英语单词带拼写带中文的 ---- 123是什么意思拜托各位大神 123是什么意思?大神们帮帮忙 123是什么意思谢谢了,大神帮忙啊 人的智商怎样锻炼? 如何提高智商求大神帮助 必修2英语单词录音.MP3格式的求发. 急需九年级上英语单词mp3格式滴录音. 英语翻译如题“百年”尽可能多的提供一些参考抱歉，是我没有说明白我的意思就是说类似于“百事”pepsl 这种发音 发音“塞口”,翻译成中文是“傻子”,英文单词是什么?1个英文单词 123问详解求. 英语翻译分 求“坑爹”英文翻译 英语翻译用三年,等待一些事情发生.不管要多努力,我一定可以.千万不要用翻译器啊= = Though I speak whith the tongues of men and of angels就是现在流行的戒指上的天使誓言,到底是圣经中哪段啊? 英语翻译Shelby woke Tanet up by nosing her forcefully until she became conscious.Ears down,she went on to wake John up.she continued to act anxious and would not leave their sides,as they tried to determine what was making them and the children f though l speak with the tonguesof me and of angelsand have not charityl am become assounding brassor a tinkling cymbal…翻译中文.急…… 英语翻译莎士比亚创造了英国戏剧的“珠峰”之后,英国戏剧又回复到其平庸的状态.更极端的是,其间竟有几段“空白”.英国戏剧史上几乎完全没有戏剧的时代有三个,即所谓的“三个三十年 Though I speak with the tongues of men and of anfels and have not charity I though i speak with the tonguss of men and of angels是什么意思and have not charity I am become as sounding brass or a tinkling cymbal是什么意思 我管爸爸的妹妹的儿子叫什么比我大是表哥还是堂哥 爸爸.妈妈.叔叔.阿姨.妹妹.弟弟.姑姑的英文单词 Though I speak with the tongues of me and of angels,and have not chanity,I am become as sounding...Though I speak with the tongues of me and of angels,and have not chanity,I am become as sounding brass or a tinkling cymbal...谁来帮我翻译一下 坑爹用英文怎么说 坑爹呢,这个用英语怎么说? 太坑爹了.用英语怎么翻译 though i speak with the tongues ofmen and of angels and have not charity i ambecome as sounding brass or a cinkcing cymbal 具体点的