计算：20-15+55．-数学

更多内容推荐

• ---Has Ingid handed in her paper yet? ---I’m not sure. She _______ on it last week.A．was workingB．ha
• I the office yesterday afternoon when a stranger came in with a boy．A．leftB．was about to leaveC．was
• 计算13-12的结果是（）A．-733B．33-32C．3D．-533-数学
• 计算：22-1+18-412-数学
• They _________ the plane, or perhaps they have been prevented from coming for some reason.A．can have
• She said the contest ________ by the Students’ Union the next Friday.A．will be heldB．would be holdin
• He began to __________ because every means _______ tried already.A．lose heart; has beenB．lose heart;
• --Why has he been staying at home these days? --He ___________ since a month ago.A．has been out of w
• ---- Can I borrow your car?---- Sorry. My car __________ at the garage. is being repaired B. is repa
• 计算：27-12-43．-数学
• 72-412-1798+118．-数学
• —Why do you look so worried?—My computer broke down and my essay ______ unfinished since.A．had leftB
• 计算：32-22=______．-数学
• 化简15+45-(113-108)的结果是______．-数学
• 阅读下面例题：计算4+15-4-15．∵(4+15-4-15)2=4+15-24+15•4-15+4-15=6而4+15＞4-15∴4+15-4-15=6请参照例题计算5+21+5-21．-数学
• Tom, together with his classmates, ______ because of _______ the school rules.A．was punished, obeyin
• 计算：275-327+3=______．-数学
• 计算239y+6y4-2y1y的正确结果是（）A．3yB．2yC．-2yD．-3y-数学
• Lily will have a holiday as soon as she ____ her plan next week.A．finishesB．doesn’t finishC．will fin
• —No one answered when I phoned this morning. Where were you?—Ifor teeth in the dental clinic.A．was b
• 计算：（1）0.8+80=______；（2）(3-10)2-(4-10)2=______．-数学
• She is ________ in red today and looks very beautiful. A wearing B having on C putting on D dressed
• Remember not to telephone me after 7：30 pm, for I ____ the students in the classroom then.A．will coa
• ——What’s that noise?——Oh, I forgot to tell you. The new machine ______.A．was testedB．will be testedC
• 计算18-8的结果正确的是（）A．10B．5C．2D．1-数学
• 计算：（1）32-128+12=______．（2）3a+b-5a+b+5aa+b-2ba+b=______．-数学
• ---- How could I thank you enough? ----Don’t mention it. Any other man ________ that.A．wouldB．will d
• －Where did you put the car keys?－Oh, I ______ I put them on the chair because the phone rang as I __
• 24+613-（348-6）-数学
• I wish that the elderly would live in comfort without worry or health problems in the years they hav
• —Who do you guess I am? —Sorry，your namemy mind．A．slipped B．has slipped C．had slipped D．slips-高三英语
• Jack could have avoided that terrible car accident, but he ________ careful enough.A．is notB．hasn’t
• 计算（1）313+(-3)2-(1-3)-12（2）(46-412+38)÷22．-数学
• 计算1916+2536的值为（）A．2512B．1912C．3112D．256-数学
• 计算与化简：（1）18-50+38（2）a8a-a212a+32a3（a＞0）-数学
• — Why does this village develop so slowly?— Because large quantities of money .A．have wastedB．is bei
• 计算：2+8-18=______．-数学
• 计算或化简：（1）12-18-0.5+33（2）(25+33)2-(25-33)2（3）18-22-82+(5-1)0-数学
• 下列计算正确的是（）A．32+22=2+3B．12+3=23C．12+3=-2+3D．412=212-数学
• As early as his second film, Chaplin had developed his own manner of acting, the one that ________wo
• Although it ________ as hard as ____stone, it easily melts when ______.A．feels…\...heatedB．feels…a.
• — Have you noticed some people_____to check the exact signature before sending a text message? — It
• --Could you tell me where you’re working now, Tony? --In the new development zone. But I ________ i
• They at home when a storm cameA．sleepB．sleptC．were sleepingD．are sleeping-高二英语
• 化简：27a-12a=______．-数学
• 下列计算正确的是（）A．2+3=5B．16+9=4+3=7C．2+2=22D．32-2=22-数学
• 计算8+212-613．-数学
• 计算：18-8=______．-数学
• 计算：18-2=______．-数学
• -------Take a break, Amy. You ________ on the piano all morning. -------I’d like to, but this time n