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计算:25-9=______.-数学
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化简:(1)(23-2)2;(2)(3+2)(3-2);(3)27-123;(4)8+32-2+12.-数学
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计算:(1)32-218+0.5;(2)(3+5)(3-5)-(3-1)2.-数学
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I'm sure I ___in a certain key university at this time next year.A.am studyingB.will have studi
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Oh, it’s you! I _______________ about our meeting here.A.have never dreamedB.had never dreamedC.neve
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Now that she is out of a job, Lucy ______ going back to school, but she hasn’t decided yet.A.had con
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计算32-3(22-18)的结果为()A.72B.22C.2D.3-数学
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—That must have been a long trip.—Yeah, it us a whole week to get there.A.takesB.has takenC.tookD.wa
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下列各式计算中,正确的是()A.56-36=2B.7x+2x=92xC.xa+ya=x+yaD.123x-133x=163x-数学
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The story ______, and everybody knows about it. A.has been got roundB.got roundC.was got roundD.has
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I want to buy that kind of cloth because I ______ the cloth ______ well.A.have told; washesB.was tol
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According to a report, cigarette smoking____ in all indoor public places in China already.A.will ban
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计算:4x-x=______.-数学
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计算:(1)93-712+48(2)6×13-16×18.-数学
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We were listening closely to the lecture yesterday evening when suddenly the light _______.A.had bee
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To understand the complex situation completely requires more thought than ________ so far.A.gaveB.ha
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计算8-2的结果是()A.6B.6C.2D.2-数学
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计算:128-0.5-412+250-数学
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化简8-2的结果是()A.6B.2C.2D.1-数学
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--- Hi, Torry, can I use your computer for a while this afternoon? --- Sorry, _____________. A.it is
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I want to buy that kind of cloth because I _____ the cloth _____ well. A have told; washed B have be
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——I let my secretary call you several times. Do you know that?——I _____in a meeting. I’m sorry.A.had
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计算:12-3=______.-数学
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已知:m,n是两个连续自然数(m<n),且q=mn.设p=q+n+q-m,则p()A.总是奇数B.总是偶数C.有时是奇数,有时是偶数D.有时是有理数,有时是无理数-数学
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—You may find the key to the math problem on page 107.—Ah, it’s so simple. I wonder why I _____ of t
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--- What ______ when I phoned you?--- I ______ my work, and I was about to go out.A.have you done; f
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— ____ you read the newspaper?— Yes. I ____ it on the bus while I was on my way to work.A.Have; read
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We ____ on this project for four hours. Let’s have a rest.A.are workingB.have been workingC.workedD
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计算或解方程(1)48+12-33;(2)x2+4x-5=0.-数学
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计算:239x+6x4-2x1x(x>0).-数学
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In the last few years thousands of filmsall over the world.A .have produced B. have been producedC.
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—why don’t we choose that road to save time?—The bridge to itA.is being repairedB.is repairedC.has
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The first edition ________ in 1955 and ________ a best seller ever since.A.was published;had beenB.w
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The subway __________in our city, and I’m sure there will be fewer traffic jams in the future.A.is b
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The meetingfor two hours,but they stillany agreement.A.has been going on;haven’t reachedB.has been g
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下列各式中计算正确的是()A.2+3=5B.2+2=22C.12-102=6-5D.32-2=22-数学
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计算:(3+1)2001-2(3+1)2000-2(3+1)1999+2001-数学
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The black box is a necessary device on an airplane, which records its speed, direction and whether e
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What do you guess our friend Bob when we get to his home? A.doesB.would doC.has been doingD.will be
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计算:12-33=______.-数学
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计算:8-12=______.-数学
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I know he is getting on well recently. He _____ me regularly.A.writes toB.has written toC.wrote toD.
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计算212-613+8的结果是()A.32-23B.5-2C.5-3D.22-数学
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计算:(1)9a-4a+a(2)212-448+327.-数学
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Don’t interrupt me. I ________ letters all morning and have only finished five.A.writeB.have writte
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When Nancy was at college, she ____ three foreign languages, but I am surprised to find that she __
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We don’t know if she _____ home. If she ____, I’ll tell you.A.comes; will come B.will come; will com
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The people _____ the murderer everywhere when he suddenly _______ in the hospital.A.searched for; ap
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— Sorry to have interrupted you. Please go on.— Where was I?— You ____ you didn’t like your present
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—I haven’t seen Tom for years. Any news about him?—Hein a toy factory for two years. Now he’s workin
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计算:18+2=______.-数学
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