二重积分x型y型区域

You'd better take this book,It's a good book ----it's a bit expensiveA.thoughB.andC.butD.so 有没有ask sb when to do sth这个宾语从句?在帮我看看这话是什么意思直引-问引等于宾从-简单句 复合句 主句主 宾 是宾从主 我要死了,9命啊 谁知道You ask a man for two ice creams.Which polite word do you add?的意思? 求大神帮做英语阅读,帮帮我 达人帮我看看这个句子的句法对不对?（英语）急.The recent two decades have seen an incrsasing emphasis on the debate whether senior people should embrace the newly-invented technology such as E-busness and E-newspaper.句子跟单 We are going teach English.(过去式) We are going to Beijing by plane.（对划线部分提问）by plane划线 from ever since和since then和after that time和from then on的区别? from then on & ever since then的区别Clinton was born in a poor family in 1946.Three months before he was born,his father,William Blats,died in a traffic accident._______ he tried to work hard at his courses at school and made up his mind to be a u 翻译英文:当心,小心 英文翻译:The day is set aside for giving thanks thanks for giving us so much help,linda _____________A.no thanksB.don't say soC.It doesn't matterD.That's ok横线是指答句。 下次你要小心 英语翻译 英语翻译：Thanks for a lovely evening.We've enjoyed ourselves so much 英语问答,请问这些句型有没有错?Are there any glasses on the shelf?No,there aren`t any,The glasses on the table. we can't live ------water ------air.a.with,and b.without,or c.for,on d.with,at Nothing can live＿air＿water A.without;orB.with;andC.without;andD.with;or 谁有1200字的《老人与海》的读后感? 求老人与海读后感1200字以上 31号之前在假期中我读了美国著名作家海明威的小说《老人与海》.我十分佩服小说中老渔夫的意志,他让我懂得了一个人一定要有坚持不懈的精神,才能获得成功. 动英文的朋友们帮帮忙 看看我写的句子句式什么的都对不对I want to do real self.I am a realist.I am not general.I am quite a personality.这几句 别用在线翻译的 要自己能看懂的 看看和我想说的一不一样 求看一看英语句式对不对,不过不对,求修改!（在原句上修改）Bill is reading the story which is funny with laughing.这个故事非常滑稽,比尔一边读,一边笑. We'd like to travel to Beijing同意句 you want to book a holiady to Beijing travel agency请给我写这样一组对话YOU want to book a holiday to Beijing .now you are at atravel agency .ask the travel the travel agent,as politely as possible,for the necessary information about hotel r 连词成句.1.Beijing,want,them,take,a,trip,we,to,to(.) We want to go to Beijing d------ the summer holiday8点半前！ 你对【非R】的定义是什么现在势力里众说纷纭,有些人说5000RMB以下的都是非R,5000-10000是纳米人,表示不解了啊 Organization的字母有没有什么特殊含义,比如说O是哪个哪个单词,r又是哪个单词 发f(X)是定义在R+上的增函数, 求英语翻译 “生活中处处要小心“ 只是我们应该做的 用英语怎么翻译 但是我们应该怎样做翻译英语 英语翻译we are smug