下列等式成立的是（）A．x2•x-3=xB．x3÷x6=x-3（x≠0）C．（x-3）2=x-5D．(1x)-2=1x2-数学

更多内容推荐

• The man was charged for blowing______some government buildings in Baghdad.A．upB．downC．out D．over-高一英
• 已经(x-2)2+y+1=0，则xy的值为（）A．2B．-2C．12D．-12-数学
• His photos appeared ______ in national famous magazine at that time.A．properlyB．fluentlyC．frequently
• He began to take political scienceonly when he left school.A．strictlyB．trulyC．carefullyD．seriously-高
• Just as a book is often judged ______ by the quality and appearance of its cover, a person is judge
• Our bodies are strengthened by taking exercises. ____, our minds are developed by learning.A．Probabl
• 计算（π-3）0=______；（a2）3=______；2xy•（______）=-6x2yz．-数学
• 计算a-2b-3(-3a-1b2)6a-3b-2的结果为（）A．2bB．-b2C．1D．b2-数学
• 计算或化简：（1）(-5)×(13)-1；（2）(xy-y2)÷x-yxy．-数学
• — Have you finished your experiment report, Jane?— Oh, my God. I’ve _____ forgotten all about that.A
• When the woman saw that her son was OK after the car accident, she said _____, “Well, dear, you are
• Li Ming is a student who is easy _____ though he has some trouble _____ his lessons.A．to be got alon
• It is surprising that such a young boy can swim ______ the river ______ 100 meters wide.A．over; meas
• A good “teammate” doesn’t ___ make a good partner. Those who put their partners in this category wer
• 短文改错。 Mobile phones are being more wide used. They're light in weight and easy to carry, offer
• Since I knew how hard the life they lead is, I have understood ____ they need so much money.A．howB．w
• The mother looked at the door _______，expecting the children’s coming．A．actuallyB．exactlyC．entirelyD
• 计算：2-2=______．-数学
• Our class _____ beat Class 5 in this football match, but we still felt very happy with the victory.
• （1-π）0=______．-数学
• The hotel was nice; the weather was warm; the beaches were beautiful.____ I’d say it was a great vac
• 下列运算不正确的是（）A．a-3=1a3B．-x3÷（-x）2=-xC．若x+x-1=0，则x2-x-2=0D．1x•x-1=1x2-数学
• 计算题（1）（3a2）3-（a4）2-（-a5）2-（a2）2（2）（p-q）6÷[（p-q）2（q-p）3]（3）27×（-3）-2×34-81×（-3）-3×（-3）3（4）（a+3）2（a-3）
• ----You haven’t done it well.----But I tried my best and did it ______ the way ______ I thought was
• The boy managed to climb out of the car, ________ unhurtA．regularlyB．extremelyC．frequentlyD．apparent
• Great inventors don’t ________ graduate from famous universities. Some didn’t even go to university.
• I don’t mind picking up your things from the store. ______, the walk will do me good.A．Sooner or lat
• I won’t call you ______ something unexpected happens.A．unlessB．whetherC．becauseD．while-高一英语
• They’re ______ choosing a cautious policy in order to avoid a risk in such an important event.A．thor
• 若(2x-1)0-1(1-x)2有意义，则x的取值范围为______．-数学
• 下列运算正确的是（）A．（-2）0=0B．4=±2C．|-2|=2D．2-1=-2-数学
• Just a month before the earthquake the school practiced an emergency drill showing the children how
• For convenience, England is divided ______into three geological zones.[ ]A. profoundly B. definitely
• Expensive restaurants are not_________ the best.A．frequentlyB．directlyC．immediatelyD．necessarily-高三英
• He had planned to make a compromise，buthe changed his mind at the last minute. A．therefore B．otherwi
• You’d better book the tickets in advance; _______ we may miss the concert. A．howeverB．thereforeC．nev
• His report was so exciting that it was __interrupted by applause（掌声）.A．constantlyB．constantC．seldomD
• He had his leg broken in the basketball match. ___, he has to be away from school for a couple of we
• 计算：（1）3x-3（2y+x）+y（2）（-2ab）（3a2-2ab-b）2（3）(-13)-1-(3.14-π)0+(-12)2（4）（a+b-3）（a+b+3）（5）（x-1）（x+3）-（x-
• It was generally believed that the show was not as successful as expected, but____, I think it was a
• Although they are twins, Lucy is ______ different from her sister Kate in looks.[ ]A. speciallyB. si
• The bad thing about up is there’s always a _____A．highB．middleC．lowD．down-高二英语
• （1）当x______时，-4x0+1=-2有意义；（2）当x______时，（x+5）0=1有意义；（3）当x______时，（x+5）-2=1有意义．-数学
• 2-2=______，（-3）0=______．-数学
• The local government has been accused of not responding _________ to the needs of the homeless in th
• I went the village yesterday_________ to see my uncle, who lived there for 20 years.A．specialB．espec
• My uncle lost his ID card yesterday. ______, a boy found it and gave it back to him last night. A．Lo
• The man who had killed his wife was sentenced __________ the death penalty. A．ofB．toC．withD．on-英语
• The great changes _______ have taken place _______ carrying out the economic reform in our country.A
• Advertisement put pressure _______ girls to keep thin.A．atB．onC．ofD．with-高二英语