已知x,y为实数,且(x+y-1)2与2x-y+4互为相反数,求(12x)-y的

题型:解答题

问题:

已知x,y为实数,且(x+y-1)2
2x-y+4
互为相反数,求(
1
2
x)-y
的值.
考点:有理数的乘方二元一次方程组的解法
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“如果你把快乐告诉一个朋友,你就将得到两个快乐;如果你把忧愁向一个朋友倾吐,你将被分掉忧愁。”培根的这句话告诉我们的道理是[ ]

A、交往对我们的成长有重要的作用

B、交往越广泛,越有利于我们拓宽视野,所以朋友越多越好

C、在任何时候我们都要把快乐和痛苦丢给别人

D、人只要通过交往就能改正自身的缺点

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企业应当根据银行存款余额调节表编制记账凭证,调整银行存款账户的余额。()

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When Julie was a child, she was a very big fan of animals. As a result, 36 she ever heard growing up was “Julie, you should be a vet. You’re going to be a great vet. That’s what you should do.”  37  when she got to the Ohio State University, she started studying to be a vet.
A scholarship allowed her to spend her  38  year studying abroad in Manchester, England. Away from the family  39  back home, she found herself one day sitting at her desk, surrounded by biology books and staring out the window, when it suddenly hit her: “I’m in total  40 . I don’t want to be a vet!”
 41  she thought back over all the things she’d done in her life and what had made her happy. And then it hit her—it was all of the youth leadership conferences that she had volunteered  42 , and the communications and leadership courses she had taken as elective courses back at Ohio State. “How could I have been so  43 ? Here I am in my fourth year at school and just finally realizing I’m on the  44  path. I just never took the time to  45  it until now, ” she thought.
Inspired by her new  46 , Julie spent the rest of her year in England taking courses in communications and media studies. When  47  to Ohio State, she was eventually able to  48  the administration to let her create her own program in “leadership studies”,  49  it took her 2 years longer to finally graduate. She  50  to become a senior management consultant in leadership training and development for the Pentagon. She  51  founded a drug-prevention organization that  52  the message “Lead your own life with the skill and the  53  to say no.”
So, never live someone else’s  54 . If you limit your  55  only to what seems possible or reasonable, you disconnect yourself from what you truly want.
小题1:
A.whichB.allC.thatD.where
小题2:
A.SoB.ButC.OrD.For
小题3:
A.finalB.usualC.nextD.past
小题4:
A.routinesB.warningsC.complaintsD.pressures
小题5:
A.confidenceB.silenceC.miseryD.surprise
小题6:
A.PerhapsB.InsteadC.ThenD.Often
小题7:
A.ofB.withC.on D.at
小题8:
A.internalB.innocentC.intellectualD.intelligent
小题9:
A.clearB.wrongC.shortD.wide
小题10:
A.acknowledgeB.accomplishC.includeD.criticize
小题11:
A.discoveryB.informationC.understandingD.research
小题12:
A.returningB.referringC.relatingD.responding
小题13:
A.prepareB.convinceC.forbidD.force
小题14:
A.asB.ifC.onceD.though
小题15:
A.hesitatedB.failedC.retiredD.continued
小题16:
A.stillB.againC.alsoD.only
小题17:
A.leavesB.promotesC.confirmsD.acquires
小题18:
A.willB.chanceC.factD.pride
小题19:
A.promisesB.decisionsC.successesD.dreams
小题20:
A.choicesB.reasonsC.smilesD.mistakes
题型:解答题

在计算机网络的研究中,常用拓扑学的方法来研究网络单元之间()。

A.位置与性能的关系

B.距离与性能的关系

C.大小与性能的关系

D.形状与性能的关系

题型:解答题

GDP是指在一国的领土范围内,本国居民和外国居民在一定时期内所生产的、以()表示的产品和劳务总值。

A.公允价格

B.市场价格

C.成本价格

D.世界价格

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