单元测试2
网页设计与制作（HTML+CSS+JavaScript）单元2测试（2）答..
《网页制作与设计》课程单元测试二(2)（答案）一、单选题（每题3分，共30分）1．<multicol gutter=#> ... </multicol>，gutter表示。
A．列的数目B．列间的空白C．列的宽度D．列的长度【答案】B2．<body leftmargin=？>,表示。
A．页面左边的表格大小B．页面左边的空白大小C．页面左边的可用区域大小D．页面左边的可编辑区域大小【答案】 B3．链接(Link)基本语法是。
A．<a goto="URL"> ... </a> B．<a herf="URL"> ... </a>C．<a link="URL"> ... </a> D．<a href="URL"> ... </a>【答案】 D4．以下标记符中，用于设置页面标题的是。
A．<title>B．<caption>C．<head> D．<html>【答案】 A5．定制表中type标记中的circle表示。
A．圆点B．圆环C．字母D．方块【答案】 B6．<a href=URL target=_parent>..</a>,表示。
A．打开一个空窗口的超链接代码B．在父窗口打开超链接的代码C．新开一个窗口的超链接代码D．在本窗口中打开一个超链接的代码【答案】B7．在框架中，在整个框架页中打开链接的代码是。
A．<a href=URL target=_blank>..</a>B．<a href=URL target=_top>..</a>C．<a href=URL target=_main>..</a>D．<a href=URL target=_self>..</a>【答案】B8．<hr color=red>表示。
Unit 2 单元综合检测卷(解析版)
Unit 2 单元测试卷（考试时间：90分钟总分：100分）一、单项选择（共10小题，每小题1分，满分10分）1．—How many times ________ you ________ Mount Tai?—Never.A．have; gone B．have; gone to C．have; been D．have; been to【答案】D【详解】句意：——你去过泰山多少次？——从未去过。
考查have gone/been to区别。
have gone to去了某地；have been to去过；根据答句的“never”可知，此处表示“去过”，“Mount Tai”是名词，此处要用介词to，即用have been to，故选D。
2．We all reached the top of the mountain, ______________ Danny.A．and B．beside C．except D．or【答案】C【详解】句意：除了丹尼以外我们都到达山顶了。
考查except用法。
and并且；beside在旁边；except除……之外；or或者。
根据“We all reached the top of the mountain...Danny”可知此处表示Danny没去。
应用except“除了……以外”。
故选C。
3．—How was your trip to the zoo?—________. I even took some photos with the elephant.A．Terrible B．Anyway C．Exactly D．Fantastic【答案】D【详解】句意：——你的动物园之行怎么样？——非常棒。
我甚至和大象拍了一些照片。
考查形容词和副词辨析。
Terrible糟糕的；Anyway无论如何；Exactly确实是；Fantastic非常棒。
根据“I even took some photos with the elephant”可推断，动物园之行很不错，故选D。
八年级英语上册《Unit 2》单元测试卷(含答案)
人教新版八年级上册《Unit2How often do you exercise》单元测试卷（2）一、单项选择题：1．（3分）The old woman__________leaves her house because she can't walk far．（）A．usually B．ever C．hardly D．always2．（3分）How many hours do you exercise every day？________（）A．Twice a day B．Twice a weekC．Two D．Once3．（3分）﹣How often do you exercise？﹣．（）A．Two times a day B．Twice a weekC．Twice D．Once4．（3分）Tom studies_______．He_______plays with his friends．（）A．hard；hard B．hardly；hardlyC．hard；hardly D．hardly；hard5．（3分）_____it was very cold，_____my friend still went swimming in Jialing River this morning．（）A．Although；but B．Although；/C．But；although D．/；although6．（3分）10%of the students________to school on foot．（）A．goes B．go C．going D．to go7．（3分）The fishes in the river________water pollution（污染）．（）A．blew out B．woke up C．gave in D．died from 8．（3分）﹣Is there any bread left？﹣No，at all．（）A．many B．some C．none D．few9．（3分）I eat fruit and drink milk every day to keep me______．（）A．health B．healthily C．healthy D．unhealthy 10．（3分）﹣？﹣He usually watches morning news．（）A．Where does Joe watch morning newsB．How does Joe watch morning newsC．What does Joe do before breakfastD．Why does Joe do that before breakfast11．（3分）﹣My father often relaxes himself by______to music after work ﹣How about your mother？（）A．listen B．listened C．to listen D．listening 12．（3分）﹣How often do the children play sports？﹣（）A．Twice a day B．For two hoursC．Since last weekend D．Three days ago13．（3分）Peter is my best friend．He often helps science．（）A．me with B．my with C．me on D．me of14．（3分）Did you find the answer_____the question about_____TV very interesting？（）A．to，watching B．of，watchingC．to，watched D．of，watched15．（3分）Don't spend too much time_______TV（）A．to watch B．watch C．for watch D．watching二、完形填空：16．（3分）Experts（专家）say that students usually need eight to ten hours'sleep at night，but most Chinese students do not get enough sleep．Some Chinese parents are usually glad to see（1）children study late．They will think their children work very（2），but not all parents are happy about this．Once a mother told us that every morning her10﹣year﹣old boy put up one finger with his eyes still（3），begging（请求）for one（4）minute to sleep．Like thousands of students who are called"early birds"in China，he has to get up before six every （5）．A report（6）that without a good night's sleep，students seem to be weaker thanthey should be．Many students have fallen asleep during class at one time or another，Too much homework is not the only（7）why students stay up late．Some watch TV or play the computer games（8）into the night．Experts have once said that the students should develop（9）study habits．So some clever students（10）study late，and they are able to work well in class．（1）A．my B．his C．our D．their（2）A．fast B．hard C．well D．hard﹣working（3）A．closed B．open C．tired D．close（4）A．each B．more C．many D．little（5）A．afternoon B．evening C．morning D．night（6）A．reads B．watches C．shows D．asks（7）A．reason B．time C．lesson D．way（8）A．early B．late C．quickly D．slowly（9）A．good B．bad C．easy D．relaxed（10）A．once B．often C．always D．never三、阅读理解：17．（3分）A healthy eating habit along with enough exercise can help you keep healthy．When you are young，it is important to give your body what it needs，If you skip meals，you can't get enough calories（卡路里）．And then you may feel tired．By the way，the calorie is just another word for energy．About50%of your calories should come from rice，bread，vegetables and fruit．You also need to drink a lot of water，6to8glasses a day．Drinking enough water can make your body work better and make you healthy．Exercise can help to make you look good，feel good and be healthy．Scientists say that kids should spend at least30minutes exercising a day，five times a week．It is easy to do! You can walk or ride your bike to school，and play sports at school．However，kids often give up sports，saying they have no time left after finishing their homework．In fact，doing exercise can help them sleep better and do better in their lessons．If you follow the advice above，you will look and feel much better and become healthier．（1）The underlined word"skip"means""in Chinese．A．询问B．略过C．阻止D．转移（2）According to the scientists，kids should spend at least minutes exercising every week．A.30B.50C.100D.150（3）Why do many kids give up sports according to the passage？A．Because they are too lazy to exercise．B．Because they feel great after giving up sports．C．Because they are busy with their studies．D．Because they don't like playing sports at all．（4）Which of the following is TRUE according to the passage？A．About80%of your calories should come from rice，bread，vegetables and fruit．B．You need to drink three to four glasses of water every day to keep healthy．C．Students should exercise at least twice a week to keep healthy and happy．D．Doing exercise can help kids sleep better and do better in their lessons．（5）What's the main idea of this passage？A．How to eat healthily．B．How to exercise．C．How to look thinner．D．How to keep healthy．18．（3分）People want to pull down（拆除）an old house in Harlem and build a library there．They will talk about it on Monday night．But some people want to keep the house．It stands there for about100years and it's a part of the city．Janet Short is one of them．She doesn't want to pull down the house．"It would be a very sad（令人悲伤的）thing for Harlem，"said Short．"We have enough places to build a library．I still want to have art classes here on weekends．""That place is really special to me．I just think there's a better use of this place，"said Rizner．"I think we should make good use of（充分利用）this building，"said Short．Rizner says if most of the people want to pull down the house at Monday night's meeting，it will take four to six weeks to pull it down．（1）When will the people in Harlem have a meeting？A．On Monday night．B．On Monday morning．C．On Sunday night．D．On Saturday morning．（2）Why do some people want to keep the house in Harlem？A．Because it is beautiful．B．Because they live in it．C．Because it has a long history．D．Because it can bring them money．（3）What does Janet Short think of pulling down the house？A．She thinks it will take a long time．B．She feels happy．C．She feels sad．D．She thinks it's hard．（4）What can we learn from this passage？A．Janet Short doesn't want to have a new library．B．Different people think differently on this house．C．It takes eight weeks to pull down the house．D．Janet Short dislikes having art classes in the house．（5）What is the passage about？A．The use of an old house．B．The history of an old house．C．How to save an old house．D．Some people's feelings about an old house．四、词汇运用：19．（3分）He never goes to a d for teeth cleaning．20．（3分）Don't eat too much j food．It's bad for your health．21．（3分）﹣What's your favorite p？﹣Animal World．22．（3分）He watches TV t a week，on Saturday and Sunday．23．（3分）After the accident，she could h speak．24．（3分）Exercise is（health）for the mind and the body．25．（3分）How about（go）shopping on Sundays？26．（3分）We think the best way（relax）is through exercise．27．（3分）It's a good habit to brush your（tooth）every day．28．（3分）To keep healthy，I decide（exercise）half an hour every day．五、任务型阅读：29．（3分）①Mary is reading information about how to keep healthy on the Internet．Good sleep is important for your health．You need about eight hours'sleep a night．Don't eat or read in bed．A cup of milk before sleep may help you get a good sleep．Go to bed at the same time before midnight（午夜）and get up at the same time every morning．For more information，please visit www．sleep．com．How often do you exercise？If you want to stay healthy，try to②每天锻炼一小时，每周三、四次．For more information，please call Health Line at180﹣2000．Studies show that the flu virus（流感病毒）can live on our hands for long．So you should wash your hands often with soap and water．If you want to know more，please call Health Line at180﹣1313．③You can brush your teeth twice a day and see a dentist at least once a year．The oral examination（口腔检查）is not only for the health of teeth，but also for the whole body．Please visit www．mydr．com for more information．（1）将①处句子翻译成汉语．（2）将②处内容翻译成英语．（3）对③处句子的画线部分提问．（4）What can you do every day if you want a good sleep？（5）What can you do if you want to know more about flu？六、完成句子：30．（3分）"你的父母做体育运动吗""不，他们不．他们太忙了"﹣Do your parents？﹣NO，they don't．They're．31．（3分）他经常熬夜上网．He often to go online．32．（3分）通过看足球比赛来放松很不错．good to relax soccer games．33．（3分）70%的学生一星期看4次电视．the students watch TV a week．34．（3分）他的姑姑在这所学校工作三年多了．His aunt works in this school for three years．七、书面表达35．（3分）"读万卷书，行万里路"，研学旅行（Research travel）现在受到教育部门和学校的高度重视，也深受学生和家长的欢迎．假如你们学校的英文网站就研学活动需要注意的事项发帖子，征集意见．请你根据以下要点，进行跟帖回复．词数不少于60个单词．（1）要点：研学旅行，健康饮食；安全出行；遇险报警…（2）要求：不能出现真实校名和姓名等；语言通顺，表达正确；要求包含所有要点提示，可适当增加要点．______人教新版八年级上册《Unit2How often do you exercise》单元测试卷（2）参考答案与试题解析一、单项选择题：1．（3分）The old woman__________leaves her house because she can't walk far．（）A．usually B．ever C．hardly D．always【考点】副词的词义辨析．【分析】这位老太太几乎没有离开家，因为她走不了多远．【解答】答案：C．usually通常；ever曾经；hardly几乎不；always总是．根据because she can't walk far，可知因为她走不了多远，所以这位老太太几乎没有离开家．故选C．2．（3分）How many hours do you exercise every day？________（）A．Twice a day B．Twice a weekC．Two D．Once【考点】程度副词．【分析】你每天锻炼几小时？两个．【解答】句意：你每天锻炼几小时？两个，从how many判断这里询问数量，直接用基数词表示．故选：C．3．（3分）﹣How often do you exercise？﹣．（）A．Two times a day B．Twice a weekC．Twice D．Once【考点】特殊疑问句．【分析】﹣你多久锻炼一次？﹣一周两次。
单元测试(有答案) (2)
单元测试
成绩___________一、判断．
1．在长方体图形的下面打“√”．
2．在圆柱体图形的下面打“√”．
二、数一数．
有（）个
有（）个
有（）个
三、数一数，填一填．
1．
有（）个有（）个
有（）个有（）个
2．
有（）个
四、涂一涂．
★1．给长方形涂上红色．
2．给圆涂上黄色．
★五、描一描．把虚线连起来，看看画出来的是什么图形．
六、填一填．
1．有（）个，有（）个，有（）个，有（）个．2．从左边起，第（）和第（）是．
从右边起，第（）和第（）是．
★七、画一画．
1．画一个正方形．2．画一个三角形．
八、拼一拼．在下面图中找出两个圆形拼成上面的图案．
1．
2．
★★★九、判断，对的打“√”，错的打“×”．
1．
（1）有4个长方形（）．（2）有5个长方形（）．
（3）有6个长方形（）．（4）有9个长方形（）．2．
（1）有4个正方形（）．（2）有5个正方形（）．
（3）有6个正方形（）．（4）有8个正方形（）．★★★十、拼一拼，摆一摆，然后判断，对的打“√”，错的打“×”．
1．用4个同样的能拼成：
2．用4个同样的能拼成：
★★★十一、数一数．
1．
有（）个圆
2．
有（）个正方形
3．
小动物在（）个长方形中．★★★十二、剪一剪．剪一刀后拼成一个长方形．
参考答案提示
二、有（6）个，有（4），有（3）．
八、1．①③2．①②④。
人教版七年级英语上册单元测试卷(unit2)及解析
人教版七年级英语上册单元测试卷（unit2）注意事项：1．答题前填写好自己的姓名、班级、考号等信息2．请将答案正确填写在答题卡上第I卷（选择题）一、单选题A. inB. toC. of2.Here _____ three photos of my family.A. amB. isC. are3.（题文）— Are Mr. And Mrs. Smith your friends?— No, _____.A. I’m notB. you aren’tC. they aren’t4.Jim and Tim are good _____.A. brotherB. friendC. friends5.—Is _____ your family photo?— Yes, it is. And _____ are my brothers.A. this; thisB. this; theseC. these; this6.This is _____ friend Gina. _____ last name is Black.A. I; HerB. my; SheC. my; Her7.—Hi! _____ you Emma’s sister?— Yes, I _____.A. Is; amB. Are; amC. Is; are8.Alice, they’re your aunt’s _____ and they’re your _____.A. sons; cousinsB. sons; brothersC. brothers; cousins9.— What are those?— _____.A. They are redB. They are jacketsC. They are my brothers10.— Jim, _____ is Sonia. _____ is my good friend.— Nice to meet you, Sonia!A. he; ThisB. this; SheC. it; She二、完型填空____ . My parents are in the ____ photo. Myfather likes(喜欢) ____ . Look(看)! His jacket is blue. My mother is a teacher(老师) in a middle ____ . In the next photo are my ____cousins and I. This is my cousin Amy. She is my uncle’s____ . Amy has a brother. ____ name is Tom. Look! _____boy in the middle is Tom. I’m here. ____ is in my hands(手)? It’s a(n) ____ . I like to eat(吃) it.11.（小题1）A. keys B. maps C. photos12.（小题2）A. first B. next C. last13.（小题3）A. blue B. green C. yellow14.（小题4）A. family B. school C. picture15.（小题5）A. two B. three C. four16.（小题6）A. mother B. sister C. daughter17.（小题7）A. My B. His C. Your18.（小题8）A. A B. An C. The19.（小题9）A. How B. Who C. What20.（小题10）A. ruler B. orange C. telephone三、阅读理解T）误（F）。
英语人教版七年级下单元测试 Unit 2(有答案)
英语人教版七年级下课堂测试 Unit 2一、单选题He often plays football _______ five o’clock in the afternoon.A.atB.inC.forD.on2.I always ______ some vegetables. It’s good _____ my health.A. eat； atB. eat； forC. eats； forD. eats； at3.Don't be late ______ class. We must be on time.A. forB.toC.inD. at4.—Do you have a _____?—Yes. I _____ at a food shop.A.job; workB.work; workC.work; jobD.job; job5.—Either you or she _____ on duty today. Don't forget it.—OK, I won't.A.isB.amC.areD.be6.Lily well，but she can’t read music.A. sangB. singsC. hasn't sungD. is singing7.—How do you say “1:57” in English?—It's .A.three past twoB.fifty-seven past oneC.three to oneD.three to two8.Little Tony is a dirty(脏的)boy, and he ________ takes a shower.A.alwaysuallyC.oftenD.never9.He is tired because he has ________ homework to do every day.A.lots ofB.lotsC.a lotD.many10.This dog looks _____. It’s wearing red shoes.A. cleverB. braveC. funnyD. careful11.Tom is in good health, because he often exercises and eats a lot of healthy _____.A. foodB. waterC. pearD. carrot12.—_____ does your brother play volleyball?—He usually plays volleyball after school.A.HowB.WhereC.What timeD.When13.This kind of apple looks really nice, but it ________ very sour(酸的).A.looksB.soundsC.feelsD.tastes14.I sometimes play volleyball for_____after school.A.an hour halfB.an half hourC.half an hourD.an hour and half一What time do you usually get up?―_______.A.It’s eight thirtyB.At eight thirtyC.This is eight thirtyD.That’s eight thirty二、补全对话，情景问答16.Ellen :__________Russel:Yeah, I get up at six o’clock in the morning and I run. Then__________What about you?Ellen :__________Russel:Nine o’clock?Ellen:Yes, I go to school in the afternoon.Russel : Well,__________Ellen:I usually watch TV in the evening.Russel : Me, too. I watch TV at 8:00 and go to bed at nine o’clock.三、阅读理解17. Jane is my friend. She has a happy family. In the morning, she gets up at five forty. She takes a shower and then eats breakfast at half past six. Her parents usually get up at five o’clock. They run for half an hour and go home to take showers. Then her mother makes breakfast at six o’clock, and her father watches news(新闻)on TV.After breakfast, Jane’s parents go to work and Jane goes to school. They don’t have lunch at home. In the afternoon, Jane goes home at half past four. She always does her homework after she gets home. Her parents come back at five thirty. They have dinner at six.In the evening, she either reads a book or watches TV, but she can only watch TV for half an hour. Her parents say it’s not good for her eyes. She has to go to bed at about nine o’clock.1.How many people are there in Jane’s family?A.Two.B.Three.C.Four.D.Five.2.When do Jane’s parents take showers?A.At about 5: 00 a. m.B.At about 5: 10 a. m.C.At about 5: 20 a. m.D.At about 5: 30 a. m.3.What does Jane do after she gets home?A.She makes dinner.B.She reads a book.C.She does her homework. ?D.She watches TV.4.How long can Jane watch TV?A.For an hour.B.For half an hour.C.For one and a half hours.D.For two hours.5.Which is NOT true about the family?A.Jane’s family don’t have lunch at home.B.Jane’s father always watches TV in the morning.C.Jane usually goes to bed at half past nine.D.Jane’s parents exercise for half an hour in the morning.18.Dear Marcos,Hi, my name is Rebecca and I am your new pen pal. I'm twelve years old, and I live in Barcelona, Spain. I go to the 7th grade in Saint Michael School. On weekdays, I get up at 6 o'clock. The school starts at 7:30 in the morning. I have my lunch at the school cafeteria and I usually leave around 3:30 in the afternoon. I am good at math, I also like history and geography but my favorite subject is science. I like playing basketball and soccer. I also play tennis and I like swimming. On the weekends, I go to the movie theater with my friends. We like action movies. I usually go to church with my parents on Sundays.Please write and tell me about you and your life. What's your family like? What do you like doing in your spare time? I hope to hear from you soon.Best wishes,Rebecca(1).Rebecca lives in _____.A.SpainB.EnglandC.China(2).What time does the school start?A.Around 3:30 P.M.B.At 7:30 A.M.C.At 6:00 A.M.(3).What's Rebecca's favorite subject?A.Math.B.History.C.Science.(4).On Sundays, Rebecca _____ with her parents.A.plays tennisB.goes to churchC.goes to the movie theater(5).From this passage we know _____.A.Rebecca and her friends like action moviesB.Rebecca doesn't like sports at allC.Rebecca and Marcos are classmates19. Linda usually gets up early in the morning. She (A) has breakfast at six thirty. And she goes to school at around seven o’clock. Usually she gets to school at seven fifty. Ten minutes (分钟) later (以后) school starts. She has four classes in the morning. At twelve fifteen, she eats (B) _______ at school. In the afternoon she isn’t very busy.(C) After school she does her homework and plays with other kids.In the evening her parents come back from work. Her mother cooks (烹饪) dinner and then they have dinner together. After dinner Linda and her mother often read books or listen to music. Sometimes they watch TV. (D) Linda goes to bed at nine thirty. But her father often works late(晚) at night.1.写出(A)处短语的近义词。
单元测试 Unit 2 牛津英语译林版九年级上册
牛津英语译林版9上单元测试Unit 2一、听力(共20小题, 每小题1分, 计20分)第一部分听对话回答问题。
1. Which dress does the man advise the woman not to choose?2. What is Paul doing now?3. When is their mother’ s birthday?4. What will the man do?5. What is Gina’s favourite colour?A. Blue.B. Green.C. Yellow.6. Where are the speakers probably?A. At home.B. In a clothes store.C. In a bookstore.7. Which colour can’t a dog see?A. White.B. Blue.C. Red.8. What does K ate dislike about the coat?A. Its colour.B. Its price.C. Its size.9. Where is the Red Cross Hospital?A. Next to a green building.B. In front of a blue building.C. Behind a pink building.10. What does the man think of orange?A. It makes him feel confident.B. It makes him feel excited.C. It makes him feel sad.第二部分听对话和短文回答问题。
听一段对话, 回答第11-12小题。
11. What are the speakers mainly talking about?A. Different colours.B. Different feelings.C. Expressions about colours.12. What will the woman do next?A. Finish her work.B. Read English.C. Do something interesting.听第一篇短文13. A. Snowy14. A. three B. four C. five15. A. building B. clearing C. repairing听第二篇短文, 回答第16-20小题。
人教版小学四年级英语下册Unit2单元测试卷2带答案
人教版小学四年级英语下册unit2 What time is it单元测试卷2带答案基础全练全测一、【四会词汇】根据所给汉语意思写出相应的英语单词。
(60分)1．数学__________ 2.语文__________3．英语__________ 4.体育__________5.音乐__________6.为；给7．课程__________8.……点钟9．时间__________10.什么__________11．十__________12.九__________13．八__________14.七__________15.六__________16.五__________17.四__________18.三__________19.二__________20.一__________二、【四会词汇】按要求完成下列单词。
(2分)it's(完整形式)________________三、【三会词汇】根据所给英文单词及音标写出相应的汉语意思。
(20分)1．lunch/lʌntʃ/ ____________ 2．English class____________3.music class____________ 4．breakfast/'brekfəst/ ____________5.dinner/'d✋nə/ ____________ 6．P.E. class____________7.get up ____________ 8．go to school ____________9.go to bed ____________ 10．ready/'red✋/____________四、【二会词汇】给下列单词或短语选择正确的汉语翻译。
(8分)()1.over()2.go to the playground ()3.now()4.just a minute()5.go home()6.kid()7.run()8.hurryA．去操场B．现在C．赶快；抓紧D．小孩；孩子E．结束F．跑G．再多一会儿H．回家五、【四会句子】为下列句子选择正确的汉语翻译。
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九年级数学（上）（人教版） 第二十二章 二次函数检测题1第二十二章 二次函数检测题（本检测题满分：100分，时间：90分钟）一、选择题（每小题3分，共30分）1.（2014·江苏苏州中考）已知二次函数y ＝ax 2＋bx －1(a ≠0)的图象经过点(1，1)，则代 数式1－a －b 的值为（ ） A ．－3B ．－1C ．2D ．52.（2015·兰州中考）下列函数解析式中，一定为二次函数的是( ) A.y =3x -1B.y =a+bx +cC.s =2-2t +1D.y =3.（2013·吉林中考）如图，在平面直角坐标系中，抛物线所表示的函数解析式为，则下列结论正确的是（ ）A.B.＜0，＞0C.＜0，＜0D.＞0，＜04. （2015·杭州中考）设二次函数11212())0(()y a x x x x a x x =--≠≠，的图象与一次函数()20y dx e d =+≠的图象交于点1(0)x ，，若函数21y y y =+的图象与x 轴仅有一个交点，则（ ）A. 12()a x x d -= B. 21()a x x d -= C. 212()a x x d -= D. ()212a x x d += 5.（2014·成都中考）将二次函数223y x x =-+化为2()y x h k =-+的形式，结果为（ ） A.2(1)4y x =++ B.2(1)2y x =++ C.2(1)4y x =-+ D.2(1)2y x =-+6. 抛物线轴交点的纵坐标为（ ）第3题图7.已知二次函数，当取，（≠）时，函数值相等，则当取时，函数值为（）A.B. C. D.c8.已知二次函数，当取任意实数时，都有，则的取值范围是（）A ．B ．C ．D ．9.（2015·兰州中考）二次函数y =+x+c的图象与x轴有两个交点A （，0），A （，0），且，点P(m，n)是图象上一点，那么下列判断正确的是（）A.当n0时，m0B.当n时，m ＞C.当n0时，D.当n时，m ＞图象，则下列说法:①a>0；②2a+b=0；③a+b+c>0；④当-1<x<3y>0.其中正确的个数为（）A.1B.2C.3D.4二、填空题（每小题3分，共24分）11.在平面直角坐标系中，直线为常数）与抛物线交于两点，且点在轴左侧，点的坐标为（0，－4），连接，.有以下说法：①；②当时，的值随的增大而增大；③当－时，；④△面积的最小值为4.其中正确的是.（写出所有正确说法的序号）12.把抛物线的图象先向右平移3 个单位长度，再向下平移2 个单位长度，所得图象的解析式是则.13.已知抛物线的顶点为则，.14.如果函数是二次函数，那么k的值一定是.2 九年级数学（上）（人教版）第二十二章二次函数检测题九年级数学（上）（人教版） 第二十二章 二次函数检测题315.某一型号飞机着陆后滑行的距离y （单位：m ）与滑行时间x （单位：s ）之间的函数表达式是y =60x 1.5x 2，该型号飞机着陆后需滑行 m 才能停下来.16.二次函数的图象是由函数的图象先向 （左、右）平移个单位长度，再向 （上、下）平移 个单位长度得到的. 17.如图，已知抛物线经过点（0，－3），请你确定一个的值，使该抛物线与 轴的一个交点在(1，0)和(3，0)之间，你所确定的的值是 ．18.如图所示，已知二次函数的图象经过（-1，0）和（0，-1）两点，则化简代数式= .三、解答题（共46分）19.（6分）已知抛物线的顶点为，与y 轴的交点为求抛物线的解析式.20.（6分）已知抛物线的解析式为(1)求证：此抛物线与x 轴必有两个不同的交点； (2)若此抛物线与直线的一个交点在y 轴上，求m 的值.第17题图21.（8分）（2013·哈尔滨中考）某水渠的横截面呈抛物线形，水面的宽为（单位：米），现以所在直线为轴，以抛物线的对称轴为轴建立如图所示的平面直角坐标系，设坐标原点为.已知米，设抛物线解析式为.第21题图（1）求的值；（2）点（-1，）是抛物线上一点，点关于原点的对称点为，连接，，，求△的面积.22.（8分）已知：关于的方程(1)当取何值时，二次函数的对称轴是直线；(2)求证：取任何实数时，方程总有实数根.九年级数学（上）（人教版）第二十二章二次函数检测题423.（8分）(2014·江苏苏州中考)如图，二次函数y＝a(x2－2mx－3m2)（其中a，m是常数，且a>0，m>0）的图象与x轴分别交于点A，B（点A位于点B的左侧），与y轴交于点C(0，－3)，点D在二次函数的图象上，CD∥AB，连接AD．过点A作射线AE交二次函数的图象于点E，AB平分∠DAE．(1)用含m的代数式表示a.(2)求证：ADAE为定值.(3)设该二次函数图象的顶点为F．探索：在x轴的负半轴上是否存在点G，连接GF，以线段GF，AD，AE的长度为三边长的三角形是直角三角形？如果存在，只要找出一个满足要求的点G即可，并用含m的代数式表示该点的横坐标；如果不存在，请说明理由．九年级数学（上）（人教版）第二十二章二次函数检测题5九年级数学（上）（人教版） 第二十二章 二次函数检测题624. （10分）（2015·浙江丽水中考）某乒乓球馆使用发球机进行辅助训练，出球口在桌面中线端点A 处的正上方，假设每次发出的乒乓球的运动路线固定不变，且落在中线上，在乒乓球运行时，设乒乓球与端点A 的水平距离为x （米），与桌面的高度为y （米），运行时间为t （秒），经多次测试后，得到如下部分数据：（1）当t 为何值时，乒乓球达到最大高度？（2）乒乓球落在桌面时，与端点A 的水平距离是多少？ （3）乒乓球落在桌面上弹起后，y 与x 满足k x a y +-=2)3(. ①用含a 的代数式表示k ；②球网高度为0.14米，球桌长（1.4×2）米，若球弹起后，恰好有唯一的击球点，可以将球沿直线扣杀到点A ，求a 的值.第24题图第二十二章二次函数检测题参考答案1.B解析：把点（1，1）的坐标代入，得2 .C 解析：选项A是一次函数；选项B当a=0，b≠0时是一次函数，当a≠0时是二次函数，所以选项B不一定是二次函数；选项C一定是二次函数；选项D不是二次函数.3.A解析：∵图中抛物线所表示的函数解析式为，∴这条抛物线的顶点坐标为.观察函数的图象发现它的顶点在第一象限，∴ .4.B 解析：∵一次函数=dx+e（d≠0）的图象经过点（），∴dx1+e=0，∴e=-dx1，∴ =d（x-）.∵y=y2+ y 1，∴y =a（x- x1）（x-x2）+d（x-x1）=（x-x1）.又∵二次函数的图象与一次函数=dx+e（d≠0）的图象只有一个交点（），函数y=y2+y1的图象与x轴仅有一个交点，∴函数y=y2+y1是二次函数，且它的顶点是（），∴设y=a，∴（x-x1）= a.∵x1≠x2，∴ = a（x- x 1）.令x=x1，则= a（x1-x1），∴ =0，即.故选B.5. D 解析：.7 九年级数学（上）（人教版）第二十二章二次函数检测题九年级数学（上）（人教版） 第二十二章 二次函数检测题86.C 解析：令，得7.D 解析：由题意可知所以 所以当8.B 解析：因为当取任意实数时，都有，又二次函数的图象开口向上，所以图象与轴没有交点，所以9. C 解析：如图，抛物线y =+x +c 的对称轴是直线x =，当n 0时，点P 位于x 轴下方，m 可能小于0，也可能大于0，但是，故选项A 错误，选项C 正确；当n 时，点P 位于x 轴上方，此时m ＜或m ＞，故选项B ，D 错误.10. C 解析：根据函数图象开口向下可得a ＜0，所以①错误；当-1＜x ＜3时，y ＞0，所以④正确；因为抛物线与x 轴的交点坐标为（-1，0），（3，0），所以对称轴为直线x =1，所以-=1，因此2a +b =0，所以②正确；当x =1时，y =a +b +c ＞0，所以③正确.所以②③④正确.11.③④ 解析：本题综合考查了二次函数与方程和方程组的综合应用. 设点A 的坐标为（），点B 的坐标为（）. 不妨设，解方程组 得∴ (，-），B （3，1）. 此时，∴ .而=16，∴ ≠，∴ 结论①错误. 当=时，求出A (-1，-)，B （6，10）， 此时()(2)=16. 由①时，()()=16.比较两个结果发现的值相等.∴结论②错误.当-时，解方程组得出A（-2，2），B（，-1），求出12，2，6，∴，即结论③正确.把方程组消去y得方程，∴ .∵ =·||OP·||=×4×||=2=2，∴当时，有最小值4，即结论④正确.12.11 解析：把它向左平移3个单位长度，再向上平移2个单位长度得即∴∴∴13.-1 解析：故14. 0 解析：根据二次函数的定义，得，解得.又∵，∴．∴当时，这个函数是二次函数．9 九年级数学（上）（人教版）第二十二章二次函数检测题15. 600 解析:y=60x 1.5x2= 1.5（x20）2+600，当x=20时，y最大值=600，则该型号飞机着陆时需滑行600 m才能停下来.16.左 3 下 2 解析：抛物线是由先向左平移3个单位长度，再向下平移2个单位长度得到的.17.（答案不唯一）解析：由题意可知要想抛物线与轴的一个交点在（1，0）和（3，0）之间，只需异号即可，所以18. 解析：把（-1，0）和（0，-1）两点坐标分别代入中，得，，∴ .由图象可知，抛物线对称轴，且，∴，∴ .∴=，故本题答案为．19.解:∵抛物线的顶点为∴设其解析式为①将点的坐标代入①得∴故所求抛物线的解析式为即20.(1)证明：∵∴10 九年级数学（上）（人教版）第二十二章二次函数检测题∴方程有两个不相等的实数根.∴抛物线与轴必有两个不同的交点.(2)解:令则解得21.分析：（1）求出点A或点B的坐标，将其代入，即可求出a的值；（2）把点代入（1）中所求的抛物线的解析式中，求出点C的坐标，再根据点C和点D关于原点O对称，求出点D的坐标，然后利用求△BCD的面积.解：（1）∵，由抛物线的对称性可知，∴（4，0）.∴ 0＝16a-4.∴a..（2）如图所示，过点C作于点E，过点D作于点F∵a=，∴ -4.当-1时，m=×-4=-，∴C（-1，-）.∵点C关于原点O的对称点为D，∴D（1，）.∴ .∴×4×+×4×=15.∴△BCD的面积为15平方米.点拨：在直角坐标系中求图形的面积，常利用“割补法”将其转化为有一边在坐标轴上的图形面积的和或差求解.11 九年级数学（上）（人教版）第二十二章二次函数检测题22.(1)解：∵二次函数的对称轴是直线，∴，解得经检验是原方程的解.故时，二次函数的对称轴是直线.（2）证明：①当时，原方程变为，方程的解为；②当时，原方程为一元二次方程，，当∆方程总有实数根，∴∵时，总成立.∴取任何实数时，方程总有实数根.23.（1）解：将点C（0，－3）的坐标代入二次函数y=a（x2－2mx－3m2），则－3=a（0－0－3m2），解得a =.（2）证明：如图，过点D，E分别作x轴的垂线，垂足为M，N．由a（x2－2mx－3m2）=0，解得x1=－m，x2=3m，∴A（－m，0），B（3m，0）．∵CD∥AB，∴点D的坐标为（2m，－3）．∵AB平分∠DAE，∴∠DAM=∠EAN.∵∠DMA=∠ENA=90°，12 九年级数学（上）（人教版）第二十二章二次函数检测题∴△ADM∽△AEN．∴.设点E的坐标为，∴=，∴x=4m，∴E（4m，5）.∵AM=AO+OM=m+2m=3m，AN=AO+ON=m+4m=5m，∴，即为定值．（3）解：如图所示，记二次函数图象的顶点为点F，则点F的坐标为（m，－4），过点F作FH⊥x轴于点H．连接FC并延长，与x轴负半轴交于一点，此点即为所求的点G．∵tan∠CGO =，tan∠FGH =，∴=，∴OG=3m．此时，GF ===4，AD ===3，∴=．由（2）得=，∴AD︰GF︰AE=3︰4︰5，∴以线段GF，AD，AE的长度为三边长的三角形是直角三角形，此时点G的横坐标为3m．24.解：以点A为原点，以桌面中线为x轴，乒乓球水平运动方向为正方向，建立平面直角坐标系.九年级数学（上）（人教版）第二十二章二次函数检测题13(1)由表格中的数据，可得当t为0.4时，乒乓球达到最大高度.(2)由表格中的数据，可画出y关于x的图象，根据图象的形状，可判断y是x的二次函数.可设y=a+0.45.将(0，0.25)代入，可得a=-，∴y=-+0.45.当y=0时，=，=-(舍去)，即乒乓球与端点A的水平距离是米.(3)①由(2)得乒乓球落在桌面上时，对应的点为().代入y=a得a+k=0，化简整理，得k=-②由题意可知，扣杀路线在直线y=上.由①，得y= aa.令a，整理，得20a-(120a+2)x+175a=0.当Δ＝-4×20a×175a=0时，符合题意.解方程，得=，=.当=时，求得x=-，不符合题意，舍去.当=时，求得x=，符合题意.答：当a=时，能恰好将球扣杀到点A.14 九年级数学（上）（人教版）第二十二章二次函数检测题。