已知ab∈R，若方程x²-axb=0的两根x1,x2,满足-1≤x1≤1,1≤x2≤2

monument怎么解释啊? memorial可数吗当纪念物讲 At the root of volunteering is the idea that one person may have the ability to offer services that can help other people.帮我分析一下句子成分 I am aways lonely stay where l was These are our _____ for doing itA.reason B.cause C.reasonsD.causes sempre con voi,perchè sono la LUNA! image和statue之间的区别是什么?image也有雕像的意思啊 These are our motives for doing it.选择一词替换motives.答案选reasons,可是为什么不是targets? doing our part作文了 _____was the idea____the wife thought ofAWhat...thatB.That...whatC.How...why 意大利语vetro di As is known,to make harmonious society not only needs A Bunderstanding but also request equity and injust.C D文中有一处错误,ABCD上面对应的单词有一项是错误的,请帮忙挑错,谢谢(A对应的单词是 As is B对应的单词是to m -was the idear--the wife thought of第一个空是what,第二个空是that因为是同位语.thought of 后面不是缺宾语么,为什么第二个空不是what呢 The wife you has thought me?I thought you! company doing well?是什么表达方式啊?句子没有谓语啊? 如何提高高中英语阅读表达 It's summer in china,It'sIt's summer in china,It's in AustraliaA.summer B.winter C.fall Please arrange the advance payment for my prompt arrangement to hasten the delivery of the goods.感觉有点怪怪的 And you will be receiving a refund of the difference of $309.50 plus charges shortly.请问这句话应该怎么翻译,主要其中的plus我不知道该是什么意思.我的理解是:你将很快收到被扣钱数与309.50的差额的退款. like charge repel ; unlike charges attract什么意思 you get about 14 hours of music on one charge and it charges up in about 4 hours.是什麽意思? 关于MARY KAY有人加入过MARY KAY 做美容顾问吗?怎么样 难做吗?看到别人做到督导、首席 好羡慕 但又怕自己不适合 作不好.请大家指点一下我是一个硕士毕业生 待人接物的能力和与人沟通的技 So don't say sorry这是什么意思 请问大家MARY KAY怎么样?我的好多朋友都在用MARY KAY,听说还不错,可是也听好多人说不好用,我是油性皮肤,22岁,女, so mary kay请问孕妇用护肤品吗? MARY KAY属于传销吗?大学毕业生适合加入mary kay成为美容顾问吗?它的直销方式在中国真的适用吗? To my amusement most was the thought of Matin in a dress=What amused me most was the thought of So we are all British是什么意思 So see we Money so we all live so tired to meet