小明的作业本上有以下四题：①＝4a2；②；③；④，做错的题有[]A.4个B.3个C.2个D.1个-八年级数学

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• —Hey! What's the rush?—The plane ________ at 4∶00 and I need to see my uncle off.A．takes offB．w
• 计算或化简：（每小题5分，共10分）（1）（2）-九年级数学
• –Smoking is bad for your health. --Yes, I know. But I can’t _____.A．give it inB．give it upC．give it
• The children are busy doing piles of homework, for they _______ their end-of-term exam soon.A．will b
• A new cinema _______ here. They hope to finish it next month.A．will be builtB．is builtC．has been bui
• ---I hear you ______ abroad. ---That’s right. We’re going to live in Spain．A．are movingB．have movedC
• —Do you know our town at all?—No, this is the first time I __________ here.A．wasB．have beenC．cameD．a
• When I called you this morning, nobody answered the phone,?A．where were youB．where did you goC．where
• —Jane, have you finished your paper?—No, I ________ my sister with her drawing all the morning.A．hel
• ---I’m going to Vietnam?---How long ___ you___ in Vietnam?A．are; stayedB．are; stayingC．have; stayedD
• 下列根式为最简二次根式的是（）A．B．C．D．-九年级数学
• 如图，数轴上点表示的数可能是（）．A．-B．C．-D．-八年级数学
• ---Alice, why aren’t you at work today?---I ________a day off.A．have givenB．had been given C．gaveD．w
• It is the third time that he ____ the first prize in the competition. A．winsB．wonC．has wonD．to win-高
• 若x+y=0，则下列各式不成立的是（）A．B．C．D．-九年级数学
• 若是二次根式，则a，b应满足的条件是（）A．a，b均为非负数B．a，b同号C．a≥0，b>0D．≥0-九年级数学
• The police recommended that the ________ in the accident ____________ to the hospital nearby at once
• “The moment ______ soon,” he thought to himself, waiting nervously.A．is comingB．was comingC．cameD．ha
• Our new English teacher, who is said to have moved back to China, ______ in America for almost ten y
• In order to keep the balance of ecosystem, every possible means _______to deal with the problems of
• 已知是整数，则n的最小整数值是________________-九年级数学
• -- I hear Jane has gone to the Holy Island for her holiday ? --- Oh, how nice ! Do you know when she
• Mary decided not to work on the program at home because she didn’t want her parents to know what she
• It is reported that many a new house ________ at present in the disaster.A．are being builtB．were be
• 化简的结果是（）A．B．C．D．-九年级数学
• 下列说法正确的是（）A．若，则a<0B．C．D．5的平方根是-九年级数学
• 已知两个连续整数，且，则=.-七年级数学
• 计算：．-八年级数学
• 函数y=的自变量x的取值范围是-八年级数学
• --Why is the librarian looking so hard at me? --You ______ to read aloud in the reading room.A．don&#
• 式子有意义，则的取值范围是()A．B．C．D．-九年级数学
• It’s the third time he _________with her in a week.A．had quarreledB．quarreledC．has quarreledD．quarre
• --- How long ____ in Beijing? --- For just the weekend. I’ll be back for work next Monday morning.A．
• —Remember the first time we met?—Sure．You__________ the novel Pride and Prejudice in the library． A．
• ---The president _____ by his doctor today that his cancer has come back.A．informsB．has informedC．ha
• We are pleased with the fact that the people in the poor area are proud of what they ______ in the p
• 在实数范围内分解因式a2－12＝▲．-九年级数学
• ---This is the first time that I have seen you in this neighbourhood! --- I ________ here only last
• The workers who were late this morning _______ by the boss when I passed by the boss’ office.A．scold
• ---When are you going to travel to Beijing? ---The train ______ at six tomorrow morning, and I _____
• My mind wasn't on what he was saying so I'm afraid I ______ half of it. A．was missingB．had
• 已知：-九年级数学
• 下列计算正确的是（）A．B．C．D．-九年级数学
• They are living with their parents for the moment because their own house __________.A．has been rebu
• — I hope you liked the concert last night.— How on earth do you know I went to the concert? I ______
• 当x<时，＝▲．-九年级数学
• —I failed again in the maths exam. How disappointing!—You it! You never spend time on your maths stu
• The new bridge ________ by the end of last month.A．has been designedB．had been designedC．was designe
• 若，则等于（）A．B．C．D．-八年级数学
• --- Have you moved into your new house？ ---- No. It _________at present. A．will be decoratedB．is bei