若x、y为实数，且，则x+y=﹣1．-八年级数学

更多内容推荐

• —Does your sister work as a teacher in Canada? —No, but she once _________there for five years．A．tau
• -----Do you regret having quit your job?----Why should I? I ________ as much ,but I really enjoy the
• —What should you do if you have problems with your life? — .A．To find a friend to talkB．Find a frien
• - I beg your pardon?- Your mind must have been __________ when I was speaking, wasn’t it?A．wondering
• We are told that more new teaching buildings ________ next year. A．buildB．was builtC．has builtD．will
• It's the third time ________ late for school this week． A．that you areB．you areC．when you arriv
• It is most instructive lecture that I _______ since I came to this school.A．attendedB．had attendedC．
• （+）﹣-八年级数学
• —That must have been a long trip.—Yeah, it________us a whole week to get there.A．takesB．has takenC．
• （11·柳州）若在实数范围内有意义，则x的取值范围是A．x＞2B．x＞3C．x≥2D．x＜2-八年级数学
• -八年级数学
• —Ken, why do you look so tired?—I _______ myself to the climate since I came here.A．didn’t adaptB．ha
• Travelling in space has been made __________ possible with the development of science and technology
• ----Glad to see you back! How long ______ you ______ in Europe? ----Three months. I’m off to South A
• I ___________ in the street when I met an old friend of mine yesterday.A．walkedB．was walkingC．has wa
• Once new difficulties _________ in your work, it’s always important to use your brains．A．raiseB．aris
• The Diaoyu islands, in the East China Sea between China and Japan, _______ to China since ancient ti
• —What ______ when the earthquake happened on May 12th ?—Er, I was having a geography class in the cl
• — Have you got any job offers?— No. I ______.A．waitedB．was waitingC．have waitedD．am waiting-高一英语
• China sent up Shenzhou V manned spaceship into space successfully, which shows science and technolog
• Helen ________ her keys in the office so she had to wait until her husband ______ home. A．has left;
• 函数的自变量x的取值范围是．-八年级数学
• -八年级数学
• This August will be very precious for graduates by which time they _________into a university.A．will
• — Is it convenient if I call you up at 9 tomorrow morning?— I am afraid not. I _____ a group of visi
• The last decade of the 21st century ________ the rapid, steady development of China in various field
• This is the first time we ______ a film in the cinema together as a family.A．seeB．had seenC．sawD．hav
• —Hi, Jack! When did you arrive in Berlin?—Last weekend .I a different culture since then.A．was exper
• （11·钦州）下列计算正确的是-八年级数学
• Kate _________ in America for many years, but she’d never regretted her decision to return to her mo
• — Have you graduated from collage?— Yes, ________.A．I studied French for two years.B．I have been stu
• 计算：-八年级数学
• 计算：（1）22-1+18-412（2）(548-627+415)÷3（3）(6x4-2x1x)÷3x（4）18+(2+1)-1+(-2)-2-数学
• 已知函数，那么＝.-八年级数学
• In no time ________ smoke coming out of the house.A．did we seeB．we sawC．are we seeingD．we see-高三英语
• Normally you could stay with us, but our house ______ at the moment.A．is decoratedB．was decoratedC．i
• --Excuse me, I don't think you can smoke here. ---Really sorry. I ______ this is a non-smoking
• .— Mr White didn't come last night, did he?— No. We _____for him . A whole night was wasted.A．h
• -八年级数学
• I’m sorry I didn’t hear what you said. I ________ the picture.A．am looking atB．looked atC．has looked
• He______on the farm for twenty years and now he is a teacher.A．has workedB．had workedC．workedD．works
• Would you please keep silent? The news that the milk contains a harmful chemical______ and I want to
• Jack doesn’t smoke now, but he _______ for almost twenty years.A．was smokingB．had smokedC．has smoked
• －Oh, it’s Julia, Iher!－She’s just make her hair cut and she isa new dress.A．don’t recognize; having
• The Chinese government insists that the Huangyan Island _____ part of China and insists the Philipp
• 方程的根是.-八年级数学
• （2011•南充）下列计算不正确的是（）A．﹣+=﹣2B．（﹣）2=C．︳﹣3︳="3"D．=2-八年级数学
• 写出一个比-4大的负无理数_________-八年级数学
• -- Is there any room in the ship?-- Yes. We can probably _____ a few more people into it.A．squeezeB．
• My wife ______the night shift when my plane ______. That’s why no one is to meet me at the airport t