（1）计算：8-(3-1)0+(12)-2-4sin45°；（2）化简：x-1x+2÷x2-2x+1x2-4+1x-1．-数学

更多内容推荐

• 计算：tan45°+(15)-1=______．-数学
• Many people say______ is shown on television.A．too much violenceB．much too violenceC．too many violen
• A clean environment can help the city bid for the Olympics, which _______ will promote its economic
• 小小神算手：（1）计算：(12)-1+16÷(-2)3-(2005+π3)0；（2）化简：x-1-x2x+1．（3）解分式方程：3x+6x-1=7x2-x．-数学
• Let's learn to use the problem we are facing ______ a stepping-stone to future success．A．toB．fo
• His remark was considered to be quite ______, because it deepened the gap between two parties and ca
• 计算（2ab2c-3）-2÷（a-2b）3的结果是______．-数学
• If you follow the doctor's advice, you'll look and feel much better ______. [ ]A. at no ti
• 计算：4-2×(12)-1+(2-1)0．-数学
• You’d better put things back _______. Otherwise, it will be difficult to find things.A．in dangerB．in
• --- Are you free after school?---- Sorry, I've planned to treat a friend of mine to dinner ____
• With the nuclear crisis worsening in Iran, the world's attention is fixed again on ______is cal
• Having lived in the town for many years，Mr. Smith no longer felt ________ among the local people.A．o
• These problems are different from each other, so they should be dealt with .A．totallyB．simplyC．separ
• 下列计算正确的是（）A．a-8÷a-2=a4B．a-3÷a-2=a-5C．(-a)-2=-1a2D．（a-2）-3=a6-数学
• （x2-1）0=1成立的条件是（）A．x≠1B．x≠-1C．x≠1或x≠-1D．x≠1且x≠-1-数学
• 计算：20120+|-14|+4-2-2．-数学
• The medicine won’t cure the disease -- it ________stops the pain.A．likelyB．merelyC．abruptlyD．apparen
• The earth could be younger and took more than three times longer to form than _______ thought, accor
• We were all very much attracted by the beautiful scenery ______ we set foot in the village.A．quickly
• 把代数式3-2b-22-2a-3化成不含负指数的形式是（）A．9b24a3B．9a34bC．3a22ab2D．4a39b2-数学
• Scientists are convinced ________ the positive effect of laughter ________ physical and mental healt
• She was once trained for better English pronunciation and ________ she ________ obvious pronunciatio
• I was standing behind a tall man．When the man looked _____, I recognized him at once．A．upB．downC．for
• He ______to swim across the Channel, but they failed because of the terrible weather. A．succeededB．m
• 计算2-3的结果是（）A．-6B．-8C．-18D．18-数学
• It is a great concern that the school is now ____ for experienced teachers.A．badly in needB．badly of
• Mr smith has little acquaintance_____modern poetry while he has a wide knowledge ___ painting.When i
• He found it hard for Alan to focus on his teachers for longer than five minutes, _________ if the le
• ---When did you last hear ____ Jay?---He phoned me this morning, and we agreed ____ a time and place
• We have already placed an order ____ that company _____ the machines.A．for; withB．for ; forC．with; f
• Come ______, everybody! Look at this _______, and you will find something terrific.A．closely; closel
• 计算：（-2）2+2×（-3）+（13）-1-数学
• It is commonly assumed that the growth of GDP and the development of people’s living conditions are
• 计算：(π-3.14)0+(12)-1-|-4|+2-2．-数学
• 43. Our national scenery Zhangjiajie is so charming that it is _____ description.A．outB．besideC．over
• 计算：（-1）0+（13）-1=______．-数学
• 假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。错误涉及一个单词的增加、删除或修改。增加：在缺词处加-高二英语
• I remember one of them __________, who speaks with a strong Beijing accent.A．in shortB．in particular
• _____my friends and myself I thank you-without your help we would have lost our lives.[ ]A. In contr
• 直接写出结果：（1）(13)-3=______（2）（-a）10÷（-a）3=______（3）（-16x3-8x2+4x）÷（-2x）=______．-数学
• Thanks for giving me ______ advice, but it’s difficult ______ me to carry it out.A．such a good; forB
• Much to our surprise, they carried on _____ the extremely difficult conditions. [ ]A. in spite of B.
• With a population of over seven million, London is ________ the largest cities of the world.A．betwee
• 若3x=127，则x=______．-数学
• （1）化简：(4x2-4+1x+2)÷1x-2（2）计算：-23+(π-3.14)0-|1-212|×(-12)-1．-数学
• _____ all our efforts to save the school, the authorities decided to close it.A．In spite ofB．In case
• His report was so exciting that it wasinterrupted by applause（掌声）.A．constantlyB．constantC．seldomD．ne
• Is this the recorder that you want ___________?A．to have repairedB．to repair itC．to have it repaired
• The boy made ____ fun of me, so I became angry ____ him．A．a; withB．/; with C．a ; aboutD．the; about-英