下列算式中，你认为正确的是（）A．（-1）-1=1B．1÷ba×ab=1C．1m÷m•m÷1m=1D．3a-1=13a-数学

更多内容推荐

• 计算：（1）-0.10=______；（2）（-0.1）0=______；（3）（-0.5）-2=______；（4）（12-13）-1=______．-数学
• Nancy reminded me of what I should ________ have forgotten. [ ]A. thereforeB. instead C. otherwise D
• —How do you think I should receive the reporter?—___ you feel about him, try to be polite.A．HowB．Wha
• --- You've finally figured out the puzzle！--- Yeah, in a complex way, _______.A．tooB．yet C．eit
• If you are traveling_ the customs are really foreign to your own，please do as the Romans do.-高三英语
• Progress so far has been very good．We are, __, confident that the work will be completed as expected
• 计算：（1）x-2y-3(-2x-3y-1)-22-1x2y-3（2）-2-2+25+12-3-1+（π-3.14）0．-数学
• Time is limited and let's come______ to the point.A．straightB．strangelyC．immediatelyD．clearly-高
• She devoted herself ______ to her research and it earned her a good reputation in her field. A．stron
• The food ran out early, but __________ the party was a success according to the guests present that
• 化简：（1）（2x+3）2-（3x+2）2（2）4a2（a-b）（a+b）-（2a2-b2）（2a2+b2）（3）用乘法公式简便运算：20012（4）计算：[-5+3×（56）0]-1-[（-a）15
• There was such a long queue for coffee at the interval that we ______ gave up. [ ]A. eventuallyB. un
• A model or an experiment in a science class can help us see things which wouldremain hidden．A．theref
• — Now that you like the computer so much, why not buy one?— Well, I can’t afford ______ computer at
• No one responded when Tom was speaking, so he paused _______ before continuing to draw our attentio
• The city of Jilin is beautiful all the year around, in winter. The Jilin rime attracts plenty of tou
• He ran ________ fast that I couldn’t catch up with him.A．soB．suchC．veryD．too-高一英语
• 计算：2-1+（n-2）0+（-1）2013=______．-数学
• 把下列各式化成不含分母的式子：（1）4x-2y2z=______．（2）2x+3y2=______．（3）2ba-b=______．（4）2x-yx5y=______．-数学
• If you are invited to any special occasion such as a wedding or a celebration, you’ll have to be ___
• （1）计算：2cos30°-(13)-1+(-2)2×(-1)0-|-12|；（2）化简求值：(a-aa-1)÷a2+aa-1，（其中a=2sin45°+2）；（3）解方程：x2+3x=10．-数学
• 计算：（-1）3+20-(12)-1+9-数学
• — Have you read this book?— Yes. But that one is ________ worth reading.A．bestB．moreC．muchD．better-高
• The students are ___ young people between the ages at between the age of sixteen and twenty.A．mostB
• ----Volunteering is becoming ______ popular in China. ---- Yeah. People are now aware that helping
• — It’s getting dark, but Mr. Chen is till at his office. — No surprise. Who else can _______ he doe
• What a terrible experience! ________, you’re safe now — that’s the main thing.A．AnywayB．BesidesC．Oth
• If they don’t change the way they’re working on the issue, the result willturn out to be just the op
• 20020+（-2）-1=______．-数学
• He reminded me of what I should ______ have forgotten.A．neverthelessB．otherwiseC．besidesD．approxima
• Walt, feeling a bit tired, decided to stop off ______ in Hong Kong on the way to Singapore. A．briefl
• My parents tried their best to laugh _______ my fears for the coming examination.A．from B．awayC．agai
• 计算：x-x2-x3=______；（-x）-（-12x）=______；（-12）0=______；（a+2b）（______）=a2-4b2；（2x-1）2=______．（-x2ny3mz）2=
• 化简：（1）(3-2)0-(-12)-2（2）（m-3n）-2•（2m-2n-3）-2（3）a-2b2•（-2a2b-2）-2÷（a-4b2）（4）（2m2n-3）3（-mn-2）-2．-数学
• Although the new road is being used, it has not yet been _______opened.A．graduallyB．actuallyC．offici
• I’m not sure exactly how much money you’ll receive, but it will ____ cover your major expenses.A．gen
• My interests include football, bowling and surfing the web ____ studying my favorite subjects.A．as w
• The conservation area is very important for preserving many animals and plants, which would ______ r
• 已知：a+2+|b-1|+(c-2010)2=0，则（a+b）0=______．-数学
• If you have health examinations______, any disease you may have can be discovered early and successf
• In recent years, the ______ dry heat had led to a series of natural disasters.A．speciallyB．extremely
• — Are you worried about the result of the exam?— Only________. [ ] A. absolutelyB. approximatelyC. s
• Tony can’t have received the invitation. ________, he would have attended your birthday party yester
• We could hardly believe what she says because she is ________ changing her mind.A．regularlyB．constan
• --- Do you think it’s a good idea to make friends with your students？--- _____, I do. I think it’s a
• China Daily is _________ a newspaper. It helps greatly to improve our English.A．no more thanB．not mo
• I can’t say I’m the best. I have only ______ made more efforts than others.A．definitelyB．relativelyC
• 计算：（1）70070+7-7-（17）7+7009（7）（3a7b3）•（-7abp）÷（6a7b3）（3）（7x7）3-6x3（x3+7x7-x）（p）（7a+3b）7-（7a-b）（7a+b）-
• The company's profit drop _____ in the last three months of 2009 due to the financial crisis. [
• Several musicians say they consider it the greatest musical composition _______ written. A．alreadyB．