求函数的定义域和值域

为什么女友不回我信息,也不接我电话?前天,我下午发信息给她的,她到了晚上十二点才回的我信息,原因是晚上开会后有点事情,很晚才到家,我觉得也没什么,聊了几条信息后,大家都觉得有点困, 'of that'在英语中是什么意思? 被动语态These worker were made ___ all day and all nightA,to work B,working C,work 怎样检验锥形瓶装置的气密性? 在公园里放风筝、踢足球,玩得很高兴 Alex often helps me do my homework改为同义句Alex often___me___my homework 红楼梦 放风筝中哪里体现出放风筝的快乐 求bring me back down的歌词歌手one night only Out of of that weight ...Out of of that weight as much aas possible is wanted for fuel,radio instruments,passenger seats,or freight room,and,of course,the passengers or freight themselves.Please translate Out of of that weight as much ...Out of of that weight as much as possible is wanted for fuel, radio instruments, passenger seats, or freight room, and, of course, the passengers or freight themselves. Please translate Can you pass me the pen?的意思. This is not ___ book.i think it's ___ book. Annie Lennox的don't let it bring you down 哪里能下Annie Lennox的don't let it bring you down哪里能下 音质要高的 谢谢了 The WTO can't live up to its name ______ it does not include a country that is home to one fifth of我知道答案是C 也理解为什么选择IF.不好意思 A as long as B.while C.if D.even though some of us work ,and some of us study ,but a______ of us live on this planet . what kind of planet do you want to live on八句话作用, The physics exam was very difficult.I don't think could pass it.A.someone B.everyone C.anyone 选哪 This exam is a real c_.I don't think I can pass it. I think this book is ------------（interest）填空为什么不是interested 完形填空：In school it is not easy to learn_1__second language because the pupils have_2_time forit,and they are bust with other subjects,too.A.an B.a C.the D.oneA.such little B.so little C.so few D.such few It is going to rain.They took some food and drinks.(这两个答句的问句是什么） to learn a foreign language is not He often finishes his homework with his pencil同义句 It's your book与This's your book.这两句话有什么区别?如果指的不是book而是一个男性的teacher呢?第一句变成He's your teacher.那第二句呢? 1、Don't bother me.I____(write)to my parents in hong kong.2、She___always____(cry)in the morning3、The children___(play)video games every day during that holiday.But they ____(sing)karaoke at eight o'clock yesterday evening.4、My elder brother___ my parents and i are in china改为特殊疑问句 单项选择：My parents and I ______ here.(A live in B live)快 ，写明原因 第六题,英语 我和同学要演6人英语视频,求推荐,我们都是男生电影情节也可以,无论中外 Because different ways have different sign and will give you different life,different meaning怎样翻译? 这句话有错吗 because they both have experience.句中have是否要改成had 找语病:they both have the different reasons in the different viewpoint他们都在不同的角度都有各自不同的道理.