2月2627周六日作业(教师用)

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2月27日英语练习-教师用卷

2月27日练习副标题一、完形填空（本大题共40小题，共3.0分）I gave lessons recently at the Blue Ridge Mountains Christian Writers Conference, where I got my start about 15 years ago, so it’s (1) whenever I go back there.I usually (2) with conferees（学员）after teaching, and lave some private appointments with conferees. And I would listen to conferees’ ideas besides giving (3) on their writing journey on their request.And then I (4) something as I looked across the room and saw Gansky and Eva who I’d had (5) with years before when I was one of the conferees—the only reason why I offer (6) now is because countless people like them had (7) me. As a (8) writer, I shared my book ideas with Gansky and Eva, and they would encourage me. Award-winning authors had (9) me to their group and shared their (10) . And many others became my writer friends, offering (11) and support along the way. I’d never have made it on this (12) without them.That (13) me to last week when I went on a trip to the beach with some writer friends. I decided not to (14) at first—especially I’m on a(n) (15) book deadline. With book releases and conferences, I’ve been away from home a lot. I felt bad about (16) again so I’d decided to stay home, but my husband (17) me saying it’s good for me. I’d never make it without his support. It naves me to tears to (18) all the times he’s cleaned the kitchen, folded the laundry... so I can chase my (19) .I wouldn’t be where I am today without all the supportive people. They are a blessing, and I want to give then my (20) today. When’s the last time you thanked them for just being there for you? Today would be the perfect time to do that.1. A. common B. special C. private D. simple2. A. talk B. debate C. compete D. contract3. A. admission B. promise C. advice D. invitation4. A. checked B. created C. handled D. realized5. A. projects B. arguments C. agreements D. appointments6. A. services B. explanations C. jobs D. materials7. A. mentioned B. helped C. joined D. called8. A. unique B. productive C. new D. popular9. A. reminded B. led C. welcomed D. trapped10. A. achievements B. knowledge C. themes D. confusion11. A. encouragement B. information C. convenience D. access12. A. performance B. discussion C. instruction D. journey13. A. delivers B. allows C. brings D. convinces14. A. hesitate B. go C. refuse D. worry15. A. tight B. unexpected C. unusual D. flexible16. A. leaving B. packing C. accommodating D. teaching17. A. freed B. acknowledged C. tested D. persuaded18. A. long for B. think about C. deal with D. complain of19. A. friends B. fame C. dream D. wealth20. A. love B. care C. fortune D. gratitude【答案】【小题1】B 【小题2】A 【小题3】C 【小题4】D 【小题5】D 【小题6】A 【小题7】B 【小题8】C 【小题9】C 【小题10】B 【小题11】A 【小题12】D 【小题13】C 【小题14】B 【小题15】A 【小题16】A 【小题17】D 【小题18】B 【小题19】C 【小题20】D 【解析】1.【文章大意】在作者的写作道路上，她得到了很多人的帮助和支持。

七年级数学上册双休日作业3 试题(共6页)

万盈二中七年级数学(shùxué)双休日作业一、选择题〔10×2=20分〕题号 1 2 3 4 5 6 7 8 9 10答案1．的相反数是〔〕 A． B．8 C． D．1 82．以下各组数中，数值相等的是( )A． B． C． D．3．温家宝HY在2021年政府工作报告中提出，今后三年内各级政府拟投入医疗卫生领域的资金将到达8500亿元人民币，用科学记数表表示“8500亿〞为〔〕A．B．C．D．4．假如，那么“〞内应填的实数是〔〕A． B． C． D．5．以下有理数中，最小的数是〔〕 A．2 B． C．0 D．6．以下说法正确的选项是〔〕A．相反数是本身的数是正数 B．有绝对值最小的数，没有绝对值最大的数C．绝对值是它本身的数是正数 D．倒数是它本身的数是0、±17．如图是一个简单的数值运算程序，当输入的x的值是-2时，那么输出的值是〔〕A．-8 B．-4 C．4 D．88．有以下各数：，10，，，0，-(-3)，,,其中属于非负整数的一共有( ) A．1个 B．2个 C．3个 D．4个9．有理数a在数轴上的表示如下图，那么=〔〕A．1+a B．1-a C．-1-a D．-1+a10．古希腊著名的毕达哥拉斯学派(xuépài)把1、3、6、10 … 这样的数称为“三角形数〞，而把1、4、9、16 … 这样的数称为“正方形数〞．从图7中可以发现，任何一个大于1的“正方形数〞都可以看作两个相邻“三角形数〞之和．以下等式中，符合这一规律的是〔〕…4=1+3 9=3+6 16=6+10图7A．13 = 3+10 B．25 = 9+16 C．36 = 15+21 D．49 = 18+31二、填空题〔8×2 =16分〕11．写一个比-1小的有理数_______________．12．假如＋20%表示增加20%，那么－6%表示______________．13．一箱某种零件上标注的直径尺寸是，假设某个零件的直径为19.97 mm，那么该零件_________HY．(填“符合〞或者“不符合〞)14 个．15．大家知道，它在数轴上的意义是表示5的点与原点〔即表示0的点〕之间的间隔．又如式子，它在数轴上的意义是表示6的点与表示3的点之间的间隔．类似地，式子在数轴上的意义是 _______．16．假设||=||，那么=__________．17．有一列数…，那么第7个数是．18．现定义某种运算“△〞，对任意两个有理数、，有，那么______．三、解答题〔一共64分〕19．画一条(yī tiáo)数轴，并把 -22，-(-3.5)，,0,(-1)10,各数在数轴上表示出来,再用“＜〞把它们连接起来．(6分)20．计算：〔6×4=24分〕(1) (2)；(3) (4) ；(5) (6) -22 -(-1)2021×〔13-12〕÷16+(-3)221．〔2021年〕假设,,且m-n<0,求的值．〔6分〕22．盐徐高速公路养护小组，乘车沿东西向公路巡视维护，假如约定向东为正，向西为负，当天的行驶记录如下(单位：千米) 〔6分〕－9，＋17，＋3，－15，＋13，－3，－6，－8，＋5，＋16(1)养护小组最后到达的地方在出发点的哪个方向？距出发点多远？(2)养护过程中，最远处离出发点有多远？(3)假设汽车耗油量为0.4L/km ，那么这次养护一共(y īg òng)耗油多少升？23．探究性问题：〔8分〕A ，B 在数轴上分别表示．〔1〕填写上下表：（2）假设A ，B 两点的间隔为 d ，那么d 与n m ,有何数量关系．（3）在数轴上标出所有符合条件的整数点P 使它到5和-5的间隔之和为10，并求出所有这些整数的积．24.近两年，国际场黄金价格涨幅较大，中国银行推出“金御鼎〞的理财产品，即以黄金为HY 产品，HY 者从黄金价格的上涨中赚取利润．上周五黄金的收盘价为250元/克，下表是本周星期一至星期五黄金价格的变化情况.〔注：星期一至星期五开，星期六、星期日休〕5 -5 -6 -6 -10 3 0 4 -4 2 m-nA ，B 两点的间隔星期一二三四五问〔1〕本周星期(xīngqī)三黄金的收盘价是多少?〔2〕本周黄金收盘时的最高价、最低价分别是多少?〔3〕上周，小王以周五的收盘价250元/克买入黄金1000克，买入股票与卖出股票均需支付成交金额的千分之五的交易费，卖出黄金时需支付成交金额的千分之三的印花税．本周，小王以周五的收盘价全部卖出黄金1000克，他的收益情况如何？〔10分〕内容总结（1）〔3〕上周，小王以周五的收盘价250元/克买入黄金1000克，买入股票与卖出股票均需支付成交金额的千分之五的交易费，卖出黄金时需支付成交金额的千分之三的印花税．本周，小王以周五的收盘价全部卖出黄金1000克，他的收益情况如何。

2月26日英语作业

（一）In 1975 my father had just begun building his second hospital in the Himalayas when tragedy（悲剧）struck our family. My mother and youngest sister Belinda were flying into the mountains to join him when their small airplane ___1___.It was years before Dad fully ___2___. Only through more adventures and projects in Nepal could he_____3____ it. He has now built 42 schools and hospitals there.As I grew up, some of Dad’s restlessness seemed to ___4___ me. I know many people think that being Edmund Hillary’s son, I cannot help ___5___ mountains. Well, I am, at the age of 48, a mountain man. I have been on more than 30 mountaineering expeditions（探险）. And yes, I have climbed Everest twice. I am ____6____ because I have all that my father taught me, too.On one awful day in 1995, it was his ___7___ that saved my life. I was in a group of eight climbers just below the top of K2 in the Himalayas. We had just another 400 meters left to climb. But the ___8___ was going from bad to worse, and something didn’t feel __9___.At that time I heard my father’s voice inside my head: “Down. Go down. Don’t let the others ___10___ you to continue.”Then, from ___11__, I heard the voice of a fellow climber. “Come up,” she called. “Use the red rope.”Again my father’s ___12___: “Don’t do it. It’s not ___13___.”Finally I told my climbing partner that I was going down. He too was feeling ___14___, but decided to go on ahead anyway.As I headed down, I looked back at my fellow climbers who were all climbing toward the ___15___. Soon black clouds appeared between us, and I ___16___them.Fear makes you careful. As my father always told me, ___17___ is not something that you should deny(否认). It is something you should ___18___. When I woke up in my tent the next morning it was silent and still all around. I found out that I was the only one who had managed to ___19___ what had to be done. The seven above had ___20___.1. A. escaped B. crashed C. dropped D. returned2. A. changed B. understood C. recovered D. suffered3. A. get through B. turn to C. come over D. get along4. A. upset B. hit C. confuse D. surprise5. A. avoiding B. hating C. climbing D. researching6. A. hesitant B. active C. lucky D. happy7. A. advice B. letter C. support D. rescue8. A. atmosphere B. climate C. environment D. weather9. A. different B. convenient C. right D. ready10. A. expect B. inspire C. persuade D. promise11. A. above B. beyond C. under D. outside12. A. shout B. cry C. sound D. voice13. A. brave B. crazy C. dangerous D. wise14. A. awkward B. nervous C. unhappy D. unsure15. A. base B. clouds C. top D. rope16. A. kept in touch with B. lost sight ofC. caught up withD. became interested in17. A. anger B. fear C. pain D. pleasure18. A. miss B. manage C. defend D. share19. A. remind B. regret C. realize D. wonder20. A. arrived B. died C. survived D. succeeded（二）I will have a holiday next week and I can’t decide what to do.I have a lot of work to do __21___ and this would be a good chance __22___．But I don’t like __23__ the holiday in such a way．I can work at home all the rest of the year．Last year I went ___24___ to the mountains. __25___ there was beautiful，but it is too cold this time of a year. And it’s really____26___ far to go for a short holiday. I decide __27__ this isn’t a good time to___28_____the mountains．But I___29___to go somewhere else．Perhaps this would be a good chance to go to the beach（海滨）．I like to go for walks___30___the seashore ___31____the warm sunshine and watch the water．It’s only eight miles away and I could get there ___32___about two hours．After thinking it____33___，I am sure that this is a __34___time for the seashore than___35____ . Oh，here is a ____16_____ from Jim．He __37____ he is going to his house in the mountains for the___38____，and he____39___ me to go with him．__40___ giving it somemore thought，I wrote back to Jim and thanked him for that．21. A. at home B. at house C. in school D. in factory22. A. do it B. doing that C. to do it D. with that23. A. to take B. to spend C. having D. asking24. A. the north B. for north C. north D. to north25. A. Nothing B. Everything C. Somebody D. Anything26. A. very B. enough C. rather D. too27. A. that B. what C. whether D. when28. A. go B. go to C. go for D. leave29. A. want B. wanted C. shall want D. was wanting30. A. on B. by C. beside D. along31. A. on B. during C. in D. under32. A. in B. for C. with D. after33. A. about B. of C. over D. on34. A. good B. fine C. better D. best35. A. home B. the mountains C. big cities D. country villages36. A. gift B. call C. letter D. notice37. A. says B. tells C. speaks D. talks38. A. weekend B. holiday C. Sunday D. trip39. A. want B. wish C. hopes D. asks40. A. When B. With C. Without D. As。

七年级英语下学期第2周周末作业第2单元试题

七年级英语第二周周末作业制卷人：歐陽文化、歐陽理複；制卷時間：二O二二年二月七日姓名___________班级____________成绩______________Ⅰ.单项选择〔15分〕( ) 1. Bill is going ______ his new friend Alan.A. visitB. visitedC. visitingD. to visit ( ) 2. Lucy is going to the shop in ______ Street.A. NineB. NineteenC. NinthD. Nineth( ) 3. Excuse me, could you help me ______ my homework?A. onB. withC. inD. about( ) 4. There is ______ with my iPad.A. wrong somethingB. something wrongC. wrong anythingD. anything wrong( ) 5. My mother ______ a film next Friday.A. is going watchB. will to watchC. will watchD. going to watch( ) 6. Jim’s _______ brother works in a restaurant.A. oldB. olderC. oldestD. elder( ) 7. John is good ______ drawing. He is going to be an _______.A. for; artB. at; artistC. at; artD. for; artist( ) 8. — How are you?—I don’t feel ______.A. fineB. betterC. wellD. right( ) 9. Jim is really ______. He often helps others at any time.A. helpfulB. politeC. luckyD. happy( )10. A postman works in a ______.A. hospitalB. schoolC. police stationD. post office( )11. Millie is a good swimmer, and she can swim _____ a fish.A. likesB. is likeC. likeD. is likes ( )12.—Let’s go and have a picnic.— That sounds ______.A. goodB. wellC. badD. badly( )13. Is there _______ with your computer?A. something wrongB. wrong somethingC. anything wrongD. wrong anything( )14. We’re going to play football ______.A. nowB. last weekC. at presentD. the day after tomorrow( )15. Good doctors will _______ you feel better.A. makeB. askC. needD. wantⅡ.完形填空 (10 分)I have a pen pal. His name is Jack Wilson. He 1 from Toronto, Canada. He is thirteen 2 old. He is a school boy. He knows China is a great 3 . He wants 4 friends in China and he wants to learn Chinese.There 5 nineteen students in his class. His classmates are from six countries. They are learning English. His parents are from France. They 6 French. He speaks English and French. There are 7 Chinese here in Toronto. He wants to learn Chinese, but he doesn’t have 8 Chinese textbooks〔课本〕. Could you help 9 ? Please write 10 him soon.( ) 1. A. come B. is comes C. comes D. be( ) 2. A. year’s B. years C. years’ D. year( ) 3. A. village B. town C. city D. country ( ) 4. A. make B. makes C. making D. to make ( ) 5. A. is B. has C. are D. have( ) 6. A. speak B. say C. tell D. talk( ) 7. A. much B. many C. a little D. a lot( ) 8. A. an B. a C. some D. any( ) 9. A. he B. him C. his D. me( )10.A. from B. for C. to D. withⅢ.阅读理解〔20分〕ABeijing, Shanghai, Guangzhou and other big cities are great places to live in.There are many interesting things to see and do. You can go to different kinds of museums, see all kinds of plays and films. You can also buy things from all over the world.But there are serious problems in big cities, too. It’s expensive to live there, and there are too many people in some places of big cities. Every student can study at good schools and receive good medical care〔医疗〕. But sometimes these people c an’t find work or good places to live in. Also it is hard to keep the cities safe and clean.Some people enjoy living in big cities, others do not. Before they move to a big city, they should think about the problems living there.( ) 1. In big cities people can _______.A. go to different kinds of museumsB. see kinds of plays and filmsC. buy things from all over the worldD. A, B and C( ) 2. Which of the following is true?A. Big cities are not clean and safe enough.B. People can easily find good places to live in in big cities.C. People can always have many chances to find work.D. All people like to live in big cities.( ) 3. In this passage the writer thinks it’s right for people _______.A. to move to big citiesB. not to move to big citiesC. to move to big cities without thinkingD. to think of the problems before living( ) 4. This passage doesn’t tell us that _______.A. Beijing is an interesting place for people to live inB. big cities have a lot of serious problemsC. big cities are not clean enoughD. usually people can get very dirty( ) 5. — Which is the best title for this passage?— ________.A. Big citiesB. Interesting things in big citiesC. Good schools in big citiesD. Beijing, Shanghai, GuangzhouBDear Tom,How are you? I’m in a new school this term. And I’m writing to you in my school now. My new school is big and nice. There are one thousand and four hundred students and one hundred and forty teachers in my school. I like the teachers. They are very kind to me. My classmates are very friendly, too. They teach me Chinese and I teach them English.There are trees, flowers and green grass in my school. They are very beautiful. Behind my school there is a small river. The water in it is quite clean. We can swim in it.We have no classes on Saturdays and Sundays. Sometimes I go to play football or basketball with my classmates. Sometimes I stay at home and watch TV. Sometimes I go to shops with my father and mother. We all like China.Please write to me soon!YoursJack( ) 1. Jack is in a ______ school.A. EnglishB. ChineseC. smallD. Japanese( ) 2. There are ______ students and _______ teachers in Jack’s school.A. 1,400; 104B. 1,040; 104C. 1,400; 140D. 1,040; 140( ) 3. Jack’s teachers ______.A. teach him English very wellB. only teach him Chinese and EnglishC. don’t like him at allD. are quite good to him( ) 4. Jack ______ his new classmates.A. doesn’t get on well withB. doesn’t likeC. makes good friends withD. is going to learn English from ( ) 5. Which is RIGHT?A. Jack goes to school every day.B. Jack doesn’t have classes on Saturdays or Sundays.C. Jack has no classes only on Saturdays.D. Jack has no classes only on Sundays.Ⅳ.词汇〔20分〕A．根据中文提示写单词〔10分〕1. There is a ______________(通知，布告) on the wall. Let’s go and see it.2. I don’t know those ________________(学院，大学) students.3. Is your father a ______________(经理) in this company?4. He has to look after his _______________(生病的) mother at home.5. My ____________(邻居) are all friendly to me.6. Is your father an _______________(工程师)?7. Can you ______________(修理) the car for me?8. We want to make a ________________(火) to get warm.9. What do you want to be in the __________________(将来)?10. I don’t know _________________(任何人) in this town.B．用所给词的适当形式填空〔10分〕1. Her sister is a ______________(wait) in a restaurant.2. Lei Feng was very ___________(help). He always helped others at any time.3. He is _____________(luck) to pass all the exams.4. Do you often do some _____________(shop) at weekends?5. I think there isn’t _______________(something) wrong with your computer.6. His idea sounds like _______________(funny).7. His brother helps me with all kinds of _______________(problem).8. I’m _____________(call) from my new home.9. How many _________________(build) are there in your school?10. It’s ______________(interest) to chat with her.Ⅴ.句型转换〔10分〕1. I’m going to get up at 6:30 tomorrow. 〔改为一般疑问句〕__________ ___________ ____________ to get up at 6:30 tomorrow?2. I’ll play games and watch TV this weekend.〔改为否认句〕I _________ play games ___________ watch TV this weekend.3. She is going to listen to music after school.〔对画线局部提问〕_________ __________ she __________ ___________ ____________ after school? 4. There is something wrong with David’s computer.〔对画线局部提问〕_________ __________ with David’s computer?5. Let’s walk to the post office.〔改为同义句〕Let’s ___________ to the post office __________ ___________.Ⅵ.翻译句子〔10分〕1．我想他们不会欢送我这样的来访者。

2月25-26双休日作业

七年级数学双休日作业班级姓名学号评价1. 如图，∠1与∠2是 ( )A.对顶角B.同位角C.内错角D.同旁内角2. 如图,直线AB 、CD 相交于点O , ∠1=80°,如果DE ∥AB ,那么D ∠的度数是( )A. 80°B. 90°C. 100°D. 110°3. 小明和小丽是同班同学，小明的家距学校2千米远，小丽的家距学校5千米远，设小明家距小丽家x 千米远，则x 的值应满足 ( )A.3x =B.7x =C.3x =或7x =D.37x ≤≤4. 如图1是“福娃欢欢”的五幅图案，②、③、④、⑤中可以通过平移图案①得到的是( )第4题A.②B.③C.④D.⑤5. 在ABC ∆中，1135A B C ∠=∠=∠,则ABC ∆是（） A.钝角三角形 B.直角三角形 C.锐角三角形 D.无法确定6. 如图，若有一条公共边的两个三角形称为一对“共边三角形”，则图中以BC 为公共边的“共边三角形”有（）A.2对B. 3对C. 4对D. 6对第6题第7题第8题7. 如图，直线1l //2l ,125A ∠=︒,85B ∠=︒，则12∠+∠的度数为 ( )A. 30°B. 35°C. 36°D. 40°8. 如图,把三角形纸片ABC 沿DE 折叠，当点A 落在四边形BCDE 的内部时,A ∠与12∠+∠之间有一种数量关系始终保持不变,请试着找一找这个规律,你发现的规律 ( )A.12A ∠=∠+∠B.212A ∠=∠+∠C.3212A ∠=∠+∠D.32(12)A ∠=∠+∠设计：张芳审核：石云荣9.如图，过△ABC 的顶点A ，作BC 边上的高，以下作法正确的是（）10. 内角和与外角和相等的多边形的边数是 .11. 如图，请你写出一个能判定1l //2l 的条件: ____________________ .第11题第12题第13题第14题12. 如图一块直角三角尺的两个顶点分别在长方形的一组对边上，若130∠=︒，则2∠= .13. 如图，以四边形ABCD 各个顶点为圆心，1 cm 长为半径画弧，则图中阴影部分面积之和是 cm 2(结果保留π).14. 直线1l //2l ，一块含45°角的直角三角尺如图所示放置，185∠=︒，则2∠= °.15. 如图，在△ABC 中，∠B 、∠C 的平分线BE 、CD 相交于F ，∠ABC =42º，∠A =60º，则∠BFC = °.第17题第18题第19题16. 在ABC ∆中， 234A B C ∠:∠:∠=::，则B ∠= .17. 如图，线段CD 是线段AB 先向右平移格，再向下平移格后得到的.18. 如图，58A ∠=︒,44B ∠=︒,42DFB ∠=︒，则C ∠= .19. 将正三角形、正四边形、正五边形按如图所示的位置摆放. 如果332∠=︒，那么12∠+∠= °.20. 有一块长方形钢板ABCD ，现将它加工成如图所示的零件，按规定1∠、2∠应分别为45°和30°. 检验人员量得EGF ∠为78°，就判断这个零件不合格，请说明理由?F E D C B A15题21. 小明想:2015年世博会将在意大利米兰举行，设计一个内角和是2015°的多边形图案多有意义啊!你同意小明的想法吗?为什么?22. 阅读下面的材料:如图①，在ABC ∆中，试说明180A B C ∠+∠+∠=︒.分析:通过画平行线，将A ∠、B ∠、C ∠作等量代换，使各角之和恰为一个平角，依辅助线不同而得多种方法.第22题解:如图②，延长BC 到点D ,过点C 作CE //BA .因为BA //CE (作图所知)，所以2B ∠=∠,1A ∠=∠(两直线平行，同位角、内错角相等).又因为21180BCD BCA ∠=∠+∠+∠=︒(平角的定义)，所以180A B ACB ∠+∠+∠=︒(等量代换).如图③，过BC 上任一点F ，作FH //AC , FG //AB ，这种添加辅助线的方法能说明180A B C ∠+∠+∠=︒吗?并说明理由.23. 已知AB ∥CD ，直线MN 分别交AB ，CD 于E 、F ，∠MFD=50°，EG 平分∠MEB ，求∠MEG的度数。

2月26号英语作业

一. 单项选择（15分）( ) 1. The red socks ______ two dollars.A. isB. areC. hasD. have ( ) 2. We have sweaters ______ all colors _____ $ 5 each.A. at; inB. in; atC. in; forD. at; for ( ) 3. The blue hat is 10 yuan, and the black hat is ______ 10 yuan.A. alsoB. tooC. veryD. more ( ) 4. Come to the book store and see for ______.A. youB. yourC. yoursD. yourself ( ) 5. The sweater is too small, I want a ________ one.A. redB. shortC. longD. big ( ) 6. — Can I ______ you?— I want to buy a pencil case.A. buyB. sellC. helpD. like ( ) 7. This is a _______ hat.A. small yellowB. yellow smallC. blue bigD. yellow big ( ) 8. — How much is that T-shirt?—____________.A. It’s twenty yuan.B. They are twenty dollar.C. They are twenty dollars.D. It’s twenty dollar.( ) 9. — I want that bag.— ______.A. You are hereB. Give (给) youC. Here you areD. Here are you ( ) 10. ______ shorts 20 dollars?A. Are theB. Are theyC. Is theD. Is that( ) 11. —Do you like these blue shoes?—Yes, ____________.A. I’ll take itB. I’ll take themC. I don’t like themD. it’s 5 dollars( ) 12. He is a collector. He has ______ basketballs.A. twenty threeB. twenty-threeC. two ten threeD. twenty-first ( ) 13. — I have a computer game. _____ Sam ________ a computer game?—No, ______ doesn’t.A. Do; has; heB. Does; has; heC. Does; have; sheD. Does; have; he ( ) 14.Tom is a running star. He likes __________________ for breakfast.A. eggs, banana and broccolisB. eggs, bananas and broccoliC. egg, banana and broccoliD. egg, bananas and broccoli( ) 15.Do you have ____ eraser?A. aB. theC. anD. \二.词汇(共30分)A．根据句意或词首字母提示完成句中所缺的英语单词。

七年级英语上学期第2周周末作业试题

文汇中学2021-2021学年七年级英语上学期第2周周末作业制卷人：歐陽文化、歐陽理複；制卷時間：二O二二年二月七日第一局部选择题〔60分〕Ⅰ. 选择填空〔15分〕i) 从下面每一小题的A、B、C三个选项里面选出可以交换划线局部的最正确选项，并在答题卡选择题答题区将相应的字母编号涂黑。

〔一共8小题，每一小题1分〕( )1.— Everyone should protect the world we live in.A. All peopleB. All partsC. One person( ) 2. — Who are they over there?— They are my new classmates and they are friendly to me.A. happy and gladB. kind and niceC. bad but great( ) 3. —Can you complete the information card? ----- Sure.A. findB. finishC. make( ) 4. Playing the guitar and going shopping are my hobbies.A. things I must doB. things I like doing in my free timeC. activities ( ) 5. I just heard from my German e-friend called Anna.A. heardB. listened toC. got a letter from( ) 6. He enjoys listening to classic music.A. wants toB. would like toC. likes( ) 7. Alan likes many sports. He is good at playing football and running.A. does well inB. is good toC. is good for ( ) 8. Jason’s house is near the shopping mall.A. far fromB. far awayC. not far fromii) 根据句意，从下面每一小题的A、B、C三个选项里面选出恰当的词语完成句子，并在答题卡选择题答题区将相应的字母编号涂黑。

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第十六章分式
16．1分式
16.1.1从分数到分式
1.列代数式表示下列数量关系，并指出哪些是正是？哪些是分式？
(1）甲每小时做x 个零件，则他8小时做零件个，做80个零件需小时. （2）轮船在静水中每小时走a 千米，水流的速度是b 千米/时，轮船的顺流速度是千米/时，轮船的逆流速度是千米/时. (3)x 与y 的差于4的商是 . 2．当x 取何值时，分式无意义？
3. 当x 为何值时，分式
的值为0？答案：
1．(1)18x, x 80 ,(2)a+b, b a s +,(3)4y x -; 整式：8x, a+b, 4
y x -;
分式：x 80, b a s +
2． X = 3. x=-1
16.1.2分式的基本性质
1．填空：
(1) x
x x 3222
+=
()
3+x (2) 3
2386b b a =(
)
3
3a
（3)
c a b ++1=()cn an + (4) ()22
2
y x y
x +-=(
)
y x -
2．约分：（1）c ab b a 22
63 （2）5
32164xyz
yz
x - （3）x y y x --3
)(2
3．通分：
（1）321ab 和c b a 2252 （2）11-y 和1
1
+y （3）x x x --21和x x x +-2
1
4．不改变分式的值，使分子第一项系数为正，分式本身不带“-”号. （1）
b a b a +---2 （2）y
x y
x -+--32
八、答案：1．(1)2x (2) 4b （3） bn+n (4)x+y
2．（1）
bc a 2 （2）24z x - （3）-2(x-y)2
3．（1）321ab = c
b a a
c 32105， c b a 2252
= c b a b 32104
（2）11-y =)1)(1(1+-+y y y 11+y =)
1)(1(1
+--y y y
(3) x x x --21=)1)(1()1)(1(+--+x x x x x x x x +-21=)
1)(1()1(2
+--x x x x
4.
b a b a -+2,y
x y x --32 16．2分式的运算
16．2．1分式的乘除(一)
计算
（1）⎪
⎭
⎫ ⎝⎛-÷a bc ac b 2110352
（2）()y x a
xy 28512-÷ (3)441124222
2++-⋅+--a a a a a a (4))3(2
9
62y y y y -÷++-
（5）)4(1
2
x x x x -÷-- （6）3
2
22)(35)(42x y x x
y x --⋅
-
答案：（1）2
27c b - （2）ax 103- （3）)2)(1()2)(1(+--+a a a a （4）23+-y y （5）x
x -1 （6）2
)(5)(6y x y x x -+
16．2．1分式的乘除(二)
3
2x
x x --2
12
31
2-+x x
计算 (1))2(216322b a a bc a b -⋅÷ （2）10
332
6423020)6(25b
a c c a
b b a
c ÷-÷
（3）x y y x x y y x -÷
-⋅--9)()()(34
3
2 （4）22222)(x y x xy y xy x x xy -⋅+-÷-
(5))
4(3)98(23232b x
b a xy y x ab -÷-⋅ (6) x x x x x x x --+⋅+÷+--3)2)(3()3(444622
(7))6(4382
6
42z y
x y x y x -÷⋅-
(8)
93234962
2
2-⋅+-÷-+-a a
b a b
a a
(9)229612316244y y y y y y --÷+⋅-+- (10)xy
y xy
y x xy x xy x -÷+÷-+2
22)(
答案：（1）c a 432- （2）485c - （3）3)(4y x - （4）-y (5) 3
2
916ax b (6)22--x (7)336y
xz
(8) 22-b a （9）122y - （10）x 1-
16．2．1分式的乘除(三)
1．判断下列各式是否成立，并改正. （1）23)2(
a b =252a b
（2）2)23(a b -=2
2
49a b - （3）3)32(x y -=3398x
y （4）2)3(b x x -=222
9b x x - 2．计算
（1）32
223)2()3(x
ay xy a -÷ (2))()()(4
22xy x y y x -÷-⋅- (3)2
32)23()23()2(ay
x y x x y -÷-⋅-
(4) )()()(2232b a a b a ab b a -⋅--⋅-
答案：1. （1）不成立，23)2(a b =26
4a b （2）不成立，2)23(a b -=2249a
b （3）不成立，3)32(x y -=3
3278x y - （4）不成立，2)3(b x x -=222
29b bx x x +- 2. （1）2
4
398y
x a - (2)21x (3)2234x y a （4）b b a + 16．2．2分式的加减（一）
计算 (1)b
a a
b b a b a b a b a 22255523--+++ （2）m n m
n m n m n n m -+---+22
（3）96312-++a a （4）b
a b
a b a b a b a b a b a b a ---+-----+-87546563 （5）2
222223223y
x y
x y x y x y x y x --+-+--+ (6)96261312--+-+-x x x x
(7) 2
2
233343365cba b
a c ba a
b b
c a b a +--++ (8)
2
222224323a
b b
a b a b a b a a b ----+---
(9) 122+++-+-b a a b a b a b (10) 2
2
643461461x y x
y x y x -----
答案：（1）b a b a 2525+ （2）m n n m -+33 （3）31-a （4）1 (5) y x +2
(6)623+--x x
(7)b a 22 (8) 2
23b a b a -- （9）1 （10）y
x 231
- 16．2．2分式的加减（二）
计算 (1) x
x x x x 22
)242(2
+÷-+- （2）)11()(
b a a b b b a a -÷--- （3）)2122()41223(2+--÷-+-a a a a (4) )1)(1(y
x x
y x y +--+ (5) 22242)44122(a a a a a a a a a a -÷-⋅+----+ (6) zx
yz xy xy
z y x ++⋅++)111(
（7）x x
x x x x x x -÷+----+4)4
4122(22 （8）222
4442y x x y x y x y x y y x x +÷--+⋅-
2．计算24
)2121(a
a a ÷--+，并求出当=a -1的值.
答案：（1）2x （2）
b a ab - （3）3 (4)2
2y
x xy
- (5)21-a （6）z 1 (7)4412+--x x (8) y x xy +- 2.422
--a a ,-3
1。