下列各式中计算正确的有（）①232+52=1732；②5x-x=4x；③32a-8a=2a；④12+273=4+9．A．①②③④B．①②③C．②③D．②④-数学

更多内容推荐

• —Will you attend the meeting this afternoon?—But I ________ told anything about it.A．wasn’tB．am notC
• —How do you like the football match?—Wonderful, I believe. Just as fine as _____ of the matches we’v
• –I’m sure John ____ the first prize in the final. –I think so. He ____ for it for months. A．will win
• —Sorry, sir．He ____to a meeting soon．A．would goB．has goneC．will have gone D．is going-高三英语
• 若a+b=2，则称a与b是关于1的平衡数．（1）3与______是关于1的平衡数，5-2与______是关于1的平衡数；（2）若（m+3）×（1-3）=-5+33，判断m+3与5-3是否是关于1的平衡
• 计算（1）212+348（2）52+8-718（3）(54+28)÷6（4）1432a+6aa18-3a22a-数学
• 515+1220-5445+45=______．-数学
• By the time she ________ home, her parents will have prepared some delicious food for her.A．getsB．w
• —What do you think of the Eiffel Tower?—Splendid. When I was in France, Iit.A．have visitedB．had visi
• ---What’s that noise? ---Oh, my God! I ________ to turn the tap off after I brushed my teeth.A．forge
• 计算12-3的结果是（）A．3B．3C．23D．33-数学
• 计算（1）348-913+312（2）（48+20）+（12-5）-数学
• 计算：11+3+13+5+15+7+…+1119+121=______．-数学
• A vast area north of the Yangtze River ______by the first heavy SNOW of the new year，causing difficu
• You __________ to leave until you __________ your work.A．won’t be allowed; have finishedB．won’t all
• 下列计算：①8-2=2；②27-123=9-4=1；③(2+5)(2-5)=-1；④6-22=32；其中正确的为______（填序号）．-数学
• 计算：（1）27-12+25；（2）8+313-12+32；（3）(25+32)(25-32)；（4）(212-313)×6．-数学
• It is said that the old pot ____under the earth for about 1000 years by the time it was discovered.A
• 下列计算错误的是（）①2+3=5；②2+2=22；③ax-bx=（a-b）x；④18-82=9-4=1．A．1个B．2个C．3个D．4个-数学
• Though Jack _______ many times, he still plays computer games after school.A．was warnedB．has been wa
• --- Have you moved into the new house?--- Not yet. The walls ______.A．were paintedB．were being paint
• --- Let’s hurry, Mum! --- Take it easy, my dear! The shop open till ten o’clock on Saturdays.A．is st
• A lot of modern teaching equipment which will improve the school conditions to a large extent ______
• 计算：20-215+315．-数学
• I don’t really work here,I until the new assistant arrives.A．just help outB．have just helped outC．am
• 化简：12-3=______．-数学
• 计算（写出计算过程）：315+215-415．-数学
• The man took out his iPad and saw the latest film while his car _____.A．had been repairedB．had repai
• –Will you go camping this weekend?--Good idea! As we know, going camping in spring ______us less tir
• 下列运算正确的式子是（）A．2+5=10B．5x-x=4x=2xC．1-b1+b=(1-b)(1-b)(1+b)(1-b)=1-bD．3a+6a3=33a-数学
• 计算：18+3-8-27．-数学
• (12-418)-(313-40.5)．-数学
• --- ______ the sports meeting might be put off.---Yes, it all depends on the weather.A．I’ve toldB．I’
• Till now, three films ______ in that village this month.A． were shown B．have shownC．have been shownD
• Since I bought the book two weeks ago, I ______ hardly ______ time to open it, just because of the r
• Few people seem to care about what a super star _____ before he/she became famous.A．goes through B．i
• This machine _______. It hasn’t worked for years.A．didn’t workB．wasn’t workingC．doesn’t workD．isn’t
• 计算与化简：（1）18-50+38（2）a8a-a212a+32a3（a＞0）（3）a2-4a+4+(1-a)2（a≤1）-数学
• 计算：(3-2)2+3=______．-数学
• I know Mr. Shuili; we ______ to each other at an English lecture.A．were introducedB．are been introdu
• 28+18-(7-2)=______．-数学
• 计算2+13-12=______．-数学
• 化简：（1）（-5）2-16+(-2)2；（2）（48-27）÷3．-数学
• 计算题：（1）12-13-113（2）8-234×211-数学
• 33+2-22-23．-数学
• Mr. Wang, who is said to have immigrated to the USA, __ at No.2 Middle School in our city for twenty
• ---How long ______ in Shanghai? --- For two weeks. I’m going to visit some schools in Shanghai.A．did
• He looked as if he ­­­_____ the answer.A．knewB．had knownC．knows D．has known-高一英语
• Having you ever ______ in front of thousands of people at a concert, with everyone _____ while you w
• ——I’m sorry , but there’s no smoking on this flight ．——Oh, I _______that ．Sorry , I won’t again ．A．d