单元测试4-7
青岛版四年级数学下册《4.认识多边形》-单元测试7 含解析
青岛版四年级数学下册《4.认识多边形》-单元测试7一、单选题1.一个三角形的两条边分别是40厘米、50厘米，下列选项中能作为第三条边的是（）A.80厘米B.90厘米C.110厘米2.三角形中最大的一个内角一定不小于（）A.60°B.90°C.120°3.用木条做成一个长方形框，如果把它拉成一个平行四边形，面积（）A.相等B.变大了C.变小了4.一个三角形的两条边分别是3分米、4分米，第三条边最长是（）分米．A.3B.4C.5D.65.把一个等边三角形沿其中一条高剪开，分成两个直角三角形，其中一个直角三角形的两个锐角分别是（）A.45°和45°B.30°和60°C.30°和30°6.下面（）组线段能围成一个三角形．A.2cm 3cm 4cmB.1cm 2cm 3cmC.2cm 3cm 6cm7.一个等腰三角形的一个底角是35°，这个三角形也是（）三角形．A.锐角B.直角C.钝角8.一个四边形，它的四条边中有两条边长5厘米，另两条边长2厘米，那么下面说法正确的是( )。
A.一定是平行四边形B.一定是长方形C.不能确定二、非选择题9.从8厘米，20厘米，8厘米，10厘米的4条线段中选择3条围成一个三角形，围成的是____三角形，三角形的周长是____．10.平行四边形的特点是不稳定，容易变形．____．（判断对错）11.平行四边形的对边相等，正方形的____边相等．12.谁说得对？（在横线上对的打‘√”，错的打“×”）（1）一个三角形有一个角是锐角，那么这个三角形是锐角三角形．____（判断对错）（2）等边三角形一定是锐角三角形．____（判断对错）（3）直角三角形中只有两个角是锐角．____（判断对错）（4）等边三角形是特殊的等腰三角形．____（判断对错）13.3厘米，8厘米，2厘米的小棒，____组成三角形．（填能或不能）14.随意画一个平行四边形．15.（1）画出梯形的一条高．（2）画一条线段，把这个梯形分成一个三角形和一个平行四边形．16.如图中两条平行线之间的距离是2厘米．画出以A、B为底边，高是2厘米的锐角三角形，直角三角形和钝角三角形各一个．17.完成下列各题：①一个平行四边形相邻两边的和是36厘米，这个平行四边形的周长是多少厘米？②小华看一本故事书，平均每天看39页，4天看完．若前两天每天看25页，后两天平均每天看多少页？18.请分别画出图形的高．青岛版四年级数学下册《4.认识多边形》-单元测试7参考答案与试题解析1.【答案】：A;【解析】：解：50-40＜第三边＜40+50，所以10＜第三边＜90，即第三边在10厘米～90厘米之间（不包括10厘米和90厘米），所以第三边应为80厘米；故选：A．2.【答案】：A;【解析】：解：假设三角形的最大角小于60°，则不能满足三角形的内角和是180度，这与三角形的内角和是180度相矛盾，所以三角形中最大的一个角一定不小于60°，即等于或大于60度；故选：A．3.【答案】：C;【解析】：解：底没变，高变小，所以面积小了．故选：C．4.【答案】：D;【解析】：解：4-3＜第三边＜4+3，1＜第三边＜7，即另一条边的长应在1～7分米之间（不包括1分米和7分米）；所以，第三条边最长是6分米．故选：D．5.【答案】：B;【解析】：解：等边三角形的三个角都相等，都是60°，把这个等边三角形分成两个直角三角形后，则其中的一个锐角是60°，则另一个锐角是30°，故选：B．6.【答案】：A;【解析】：解：A、2+3＞4，所以能围成三角形；B、1+2=3，所以不能围成三角形；C、3+2＜6，所以不能围成三角形；故选：A．7.【答案】：C;【解析】：解：顶角为：180°-35°×2=180°-70°=110°所以这个三角形又是钝角三角形．故选：C．8.【答案】：A;【解析】：由分析得出：这个四边形一定是平行四边形。
人教版七年级英语上册同步unit4--6单元测试题
人教版英语七年级上（4--6单元）测试题一、单项选择( ) 1. I have a green sweater, I don’t like it.A. andB. orC. soD. but( ) 2. Her mother watch TV every day.A. isn’tB. don’tC. doesn’tD. aren’t( ) 3. Jack have salad dinner?A. Is; toB. Is; atC. Does; forD. Do; for( ) 4. Let’s some salad.A. hasB. eatsC. haveD. to have( ) 5. ---Let’s play volleyball.---OK. .A. It’s boringB. Yes, it’s goodC. No, I don’tD. That sounds fun( )6. Mike strawberries best.A. is likeB. likeC. likesD. do like ( )7. ---What do you like best? ---Broccoli.A. fruitB. vegetableC. sportD. color( )8. I like . Do you like ?A. apple; themB. apples; themC. apples; theyD. apples; it( )9. Tony has egg and vegetable for breakfast.A. aB. anC. someD. any( )10 ---- Do you like my watch?---- Yes, .A. it isn’t goodB. it’s yourC. it’s wellD. it’s good( )11 They like eggs for breakfast.A. aren’tB. doesn’tC. don’tD. not( )12. Do you eat healthy food?A. a lots ofB. a lotC. lots ofD. lot of( )13. --- Mr Brown is his new English teacher. Do you know that? ---.A. Yes, I amB. Yes, I do notC. No, I am notD. Yes, I do( )14. Look! There are some on the table.A. waterB. boxesC. chickenD. tea( )15.—Let’s watch TV.----That sounds ________ . I don’t likewatching TV.A. interestingB. boringC. difficultD. fun二、完形填空My name is Wu Ping. I usually have two meals（餐） 1 day—lunch and dinner. I don’t have 2 . I 3 lunch at a restaurant. I 4 hamburgers, French fries 5 a banana for 6 . After lunch, I 7 with my friends. And we have 8 together. For dinner I like an 9 ,chicken and salad. After dinner I always have ice cream for 10 .( )1. A. a B. an C. / D. the( )2. A. lunch B. dinner C. breakfast D. meals( )3. A. do B. have C. make D. am( )4. A. has B. eats C. see D. like( )5. A. and B. or C. with D. have( )6. A. breakfast B. dinner C. them D. lunch( )7. A. have B. play C. eat D. drinks( )8. A. breakfast B. lunch C. dinner D. them( )9. A. egg B. pear C. banana D. apples( )10. A. meal B. dinner C. desertD. dessert三、阅读理解A）阅读填空（根据短文内容完成表格）。
人教版七年级英语下册第4单元测试题附答案
七年级新目标(下) Unit4 单元测试Name：Class 学号: 得分：一．单项选择（30分）1.--__________ – I’m a reporter.A. What do you do?B. Who are you?C. What are you?D. Both A and C.2. ______ does your father work? --- In a bank.A. What B .How C. Where D. Which3. The beautiful girl _______ a red skirt every day.A. wearB. to wearC. wearsD. wearing4. My parents want me ____ a bank clerk.A. amB. to beC. to doD. be5. ____ do you often work very late?A. DoB. DoesC. AreD. Why6. Mr. Green is ill in ____hospital. He can’t come here today.A. theB. aC./D. an7.We can’t see the moon(月亮) _______.A. at nightB. in the dayC. all dayD. in night8. I like to_______ with my friends.A. speakB. sayC. tellD. talk9. He wants to be an actor________it’s an exciting job.A. andB. soC. becauseD. why10.Our school is ________children _______6-12.A. in, forB. for, inC. of, forD. for, of11.Does Mr. White __________ in Beijing?A. likes workingB. likes workC. like workingD. like work12. My aunt works _____________ a newspaper _____________ a reporter.A. as, forB. for, asC. with, forD. for, with13. If you want to be a waiter, please call Karen __________ 555-3937.A .at B. with C. for D. on14.What _____ he want to do ? He _____ to eat something .A. does ,wantsB. do, wantC. does , wantD. do, wants15.Mr Black is a doctor . He works ____A. difficultB. interestingC. hardD. careful16.__________ work with money and people.A. TeachersB. Bank clerksC. PolicemenD. Workers17. As a bank clerk, people give____their money or get their money from____.A. me, IB. I, meC. I, ID. me, me18. Does your mother like ?A. write storyB. to write storyC. writing storyD. writing stories19. Children always have many new things .A. learn B：learning C. to learn D. learn about20. Every day Mr. Wang has work to do.A. manyB. a lotC. a fewD. lots of21.Mary wants ____ a nurse when she grows up(长大）A. isB. beC. to beD. to is22. Linda wants me to help her find____.A. interesting jobB. an interesting jobC. an interesting workD. a interesting work23. How many____ are there in the picture?A. hospitalB. peopleC. meatD. girl24. ---Can you give ____ the dictionary? ---Sure. A. his B. him C. she D. my25. My father is always busy his work.A. doB. withC. to doD. at26. ---What’s his sister’s job?---She is ____.A. wellB. hereC. my friendD. a shop assistant27. --- What does your mother do?---____. A .She’s very wellB. She likes talking to peopleC. She works in a schoolD. She is a policewoman28.You can call Mr. Wu____ 8788652 if you want a job ____ a waiter.A. at, forB. to ,ofC. on. asD. at, as29. My job is always giving people their money or getting money from them. I dislike it because it’s not ____.A. lazyB. safeC. boringD. interesting30. We have a job for you ____an actor.A. asB. beC. likeD. with二、完形填空（10分）Do you want to know my family? Let ( 1 ) tell you. There are ( 2 ) people in my family. My father is a driver. My mother is a ( 3 ). She works in a machine factory. I have a sister. She is only eight years ( 4 ). We ( 5 ) in the same school. I’m in Grade Three, but ( 6 ) in Grade One. We like sports. We have lunch ( 7 ) school. Sometimes we ( 8 ) our homework in the afternoon. On ( 9 ) we often go to parks. We are very happy. We work ( 10 ).( ) 1. A. we B. us C. me D. I( ) 2. A. two B. three C. four D. five( ) 3. A. teacher B. worker C. driver D. farmer( ) 4. A. young B. new C. old D. long( ) 5. A. is B. am C. are D. be( ) 6. A. I’m B. they’re C. we’re D. she’s( ) 7. A. on B. about C. of D. at( ) 8. A. write B. do C. make D. study( ) 9. A. Fridays B. Thursdays C. Mondays D. Sundays( ) 10. A. easy B. hard C. heavy D. light三. 阅读理解（10分）SUNNY SCHOOLWe are a bilingual(双语) school for children of 6-15. We want a cook, a library assistant, a sports coach(教练) and a language teacher.JobAgeLanguageSkill(技能)Other term （其它条件）cook25-40ChineseCooking both Chinese food and western foodHealthy （健康）Library assistant20-35ChineseEnglishHaving the knowledge（知识）of different kinds of books Careful （细心）Sports Coach20-40Chinese EnglishMajoring in （主修）physical educationHealthy，strongteacher---ChineseEnglishMajoring in English-----根据招聘启事，选择最佳答案。
苏教版小学四年级语文下册第1、2、3、4、5、6、7单元测试卷试卷
苏教版小学四年级语文下册第1、2、3、4、5、6、7单元测试卷试卷XXX语文第八册第一单元测试题一、看拼音写词语。
(8分)XXX qǐmíng mâi() () () ()zhàn kāi yuán yùn nân yâzhâng zhîng() () () ()二、判断题，对的打√，错的打X。
（4分）1．‚兴冲冲‛的‚兴‛读音是‚xīng‛。
( )2．‚精确‛的近义词是‚准确‛。
( )3．‚概‛和‚杆‛的声母都是‚g‛。
( ) 4、‚栽‛的部首有6画。
( )三、比一比，组成词语。
（16分）栽（）拢（）版（）泛（裁（）扰（）板（）乏（仰（）估（）掠（）聚（迎（）故（）晾（）取（四、按要求写句子。
（8分）1、修改病句。
老师介绍了良多小明的事迹。
2、改成比喻句。
春风吹在我的脸上暖洋洋的。
3、改成拟人句。
池塘里的XXX在微风中摇动着4、把句子换个说法。
））））对研究有困难的同学，我们怎能不关心呢？5、用连线标出省略号在句子中的作用。
（3分）1．那……我们还是……等在这儿吧。
A、表示话未说完2、老师说：‚同学们，让我们开始上课……‛B、表示列举的省略3、荒滩，沟渠，山坡，公路……C、表示说话断断续续XXX：读上面的短文，完成文后的题目。
（31分）（一）松鼠松鼠是一种美丽的小动物。
它小巧的小面貌，嵌着一对闪闪发光的小眼睛。
一身灰褐色的毛，平滑得好像搽过油。
一条毛茸茸的大尾巴，老是向上翘着，显得格外漂亮。
1、这1段共有（）句话？（2分）2、第一句和背面三句是（）关系？（3分）3、作者是从哪几个方面写出松鼠的美丽的？（6分）--------------------------------------------------------------（二）画眉和啄木鸟茂密的丛林，茫茫无边。
各种鸟儿在这绿色的国度里无拘无束地生活。
计算思维导论4~7单元答案
【单元测验4】返回本次得分为:40。
00/40.00，本次测试的提交时间为：2017—04-22, 如果你认为本次测试成绩不理想，你可以选择再做一次.1单选（4分)古希腊数学家丢番图（Diophantus）对代数学的发展有极其重要的贡献，并被后人称为“代数学之父".他在《算术》(Arithmetica)一书中提出了有关两个或多个变量整数系数方程的有理数解问题。
对于具有整数系数的不定方程，若只考虑其整数解，这类方程就叫丢番图方程。
“丢番图方程可解性问题"的实质为：能否写出一个可以判定任意丢番图方程是否可解的算法.下面给出判定方程3x+5y=2是否有整数解的过程：首先使用欧几里德算法求出系数3和5的最大公因子：(1) 3除5余数为2;（2) 2除3余数为1；（3）1除2余数为0，算法结束，输出结果1。
3和5的最大公因子是1，1能整除2，故该方程有整数解.根据以上方法，判定下面没有整数解的是（）得分/总分A.2x+4y=54。
00/4.00B。
3x+4y=2C。
2x+3y=5D.2x+3y=2正确答案：A你选对了2单选(4分）十六进制数(88)16转换为二进制数为（）得分/总分A.100010004。
00/4.00B。
01010101C。
11001100D。
01000100正确答案:A你选对了3单选（4分）根据顺序存储和链式存储各自的优势，判断以下案例应选择哪种存储方式:若想编写一个下跳棋的游戏程序，那么表示棋盘的数据结构将会是一个静态数据结构，这是因为棋盘的大小在游戏过程中不会改变，所以应该选择；而若要编写一个多米诺游戏的程序，则根据表构建的多米诺模式的数据结构将会是一个动态数据结构，这是因为这个模式的大小是可变的,而且不能预先确定，因此应该选择。
( ）得分/总分A。
顺序存储链式存储4.00/4。
00B。
链式存储顺序存储C。
顺序存储顺序存储D。
链式存储链式存储正确答案：A你选对了4单选（4分)已知一个采用一维数组形式实现的队列Q（每项占一个存储单元）,当前队头地址为11,队尾地址为17。
部编版二年级语文上册第1-2-3-4-5-6-7单元测试卷(7套)
部编版二年级语文上册第一单元测试卷（60分钟内完成，全卷100分）一、我会读拼音写词语。
（16分）dùpízhīshi hái yánɡbànɡwǎnjiùshìnǚhái kuānɡuǎnɡtiàoɡāo二、选择正确的读音，写在括号里。
（4分）1、de děi méi mò就得（）沉没()2、ɡēnɡɡènɡwéi wèi更（）正因为()三、我会照例子组词。
（16分）哪（）睛（）给（）她（）那（）晴（）合（）他（）脚（）片（）娃（）宽（）肚（）皮（）挂（）欢（）四、连一连。
（6分）碧绿的尾巴灌溉房屋长长的身子淹没庄稼黑灰色的衣裳冲毁房屋五、体会下面词语的意思，选一选。
（只填序号）（12分）①追上去②迎上去1、刚进校园，就看到李老师向我走来，我立刻（）跟老师问好。
2、放学路上，我看到同一个小区住的亮亮就在我前面，我连忙（），和他一起回家。
①穿②披1、我（）上了妈妈给我买的新衣服。
2、洗完澡，妈妈给妹妹（）上了浴巾。
①甩甩头②摇摇头1、弟弟（），不好意思地说：“我不知道小蝌蚪是怎么变成青蛙的。
”2、哥哥故意（），摆出了一副酷酷（kù）的样子。
六、按课文内容填空。
（15分）1、墙角数枝梅，凌寒独。
遥‘’暗香来。
2、豌豆妈妈，让豆荚晒在底下。
七、读一读句子，用加点的词语写一句话。
（4分）例：我的脾气可怪了，有时候．．．我却很暴躁。
．．．我很温和，有时候例：平常我在．池子里睡觉，在．小溪里散步，在．江河里奔跑，在．海洋里跳舞、唱歌、开大会。
八、阅读短文，回答问题。
（12分）猫猫是捉老鼠的能手。
它的耳朵很灵敏，能转来转去，哪怕是极小的声音，它也能及时辨出。
猫有一双明亮的眼睛，狡猾的老鼠逃不过它的眼睛。
猫的胡须像把尺子，能测出各个洞的大小。
猫的脚爪上有锋利的爪子，能爬树、跳墙、追捕老鼠。
五年级下册数学单元测试-7.解决问题的策略 苏教版(2014秋)(含答案)
五年级下册数学单元测试-7.解决问题的策略一、单选题1.1张长方形桌子可坐6人，按如图方式将8张桌子拼成一张大桌，共可坐（）人．A. 48B. 28C. 202.猜猜接下来的图形里面有几个圆形（）A. 13B. 14C. 153.下面各图是由棱长为1厘米的正方体拼成的，根据前三个图形表面积的排列规律，第五个图形的表面积是（）平方厘米。
A. 20B. 22C. 244.在下面三道算式中，结果最大是（）A. ﹣B. ×C. ÷二、填空题5.观察下面的图形和算式，把算式补充完整。
22－12＝________ 32－22＝________42－32＝________利用你发现的规律直接写出下面算式的结果。
102－92＝________ 1002－992＝________2002－1992＝________6.用火柴摆三角形，如图所示，摆5个这样的三角形，需要________根火柴；摆n个这样的三角形需要________根火柴。
7.摆一个△要________根小棒，摆一个要________根小棒，摆一个要________跟小棒，每次增加一个△，只需增加________根小棒。
8.下面是一个楼梯的剖面图，如果要给这个楼梯铺上地毯，至少需要________地毯？三、计算题9.化为小数后，小数点后面第2013位上的数字是几？这2013个数字的和是多少？四、解答题10.找规律，涂一涂。
（1）（2）11.观察如图的电子图，找一找有出有什么规律，请在最后一个方框内继续画。
五、综合题12.如图摆放正方形.（1）第4堆正方形的个数是________（2）按此规律摆下去，第n堆正方形的个数是________13.找规律填数。
六、应用题14. 探索规律．正方体个数 1 2 3 4 5 6 …N …正方形个数 6 10 14 18 … 62 …参考答案一、单选题1.【答案】C【解析】【解答】：每增加一张桌子就多两个人，故张桌子拼在一起可坐（2+4）人，8张桌子可坐284=20（人）。
2021年牛津译林版七年级英语下册Unit4单元测试卷(附答案)
Unit4单元测试卷（分值：100分范围：7B Unit4 时间：50分钟）一、听力（共20题，每小题1分，计20分。
）第一部分: 听对话回答问题。
（每小题1分）本部分共有10道小题，每小题你将听到一段对话，每段对话读两遍。
在听每段对话前，你将有5秒钟的时间阅读题目；听完后，你将有5秒钟的时间选择你认为最合适的备选答案。
听到“嘀”的信号时，进入下一小题。
( ) 1.What can they get on that festival?( ) 2.What did Tom do just now?( ) 3.How is the boy going to spend this summer holiday?( ) 4.What does the girl’s mother buy for her?( ) 5.Where does the boy see the cat?A. In the streetB. In the treeC. Under the tree( ) 6.Why is Kate late?A. Because she is ill.B. Because her bike is broken.C. Because she does her homework.( ) 7. Whose books are these?A. Kitty’sB. Sandy’sC. Millie’s( ) 8.What day is it today?A. SundayB. SaturdayC. Thursday( ) 9.What size is this pair?A. Size 9B. Size 8C. Size 7( ) 10.How often does the man read English books?A. Once a weekB. Twice a weekC. Every two days.第二部分：听对话和短文回答问题。
牛津译林版七年级英语下册7BUnit4Findingyourway单元测试卷（含答案）
⽜津译林版七年级英语下册7BUnit4Findingyourway单元测试卷（含答案）7B Unit4单元测试卷⼀、单项选择1. ─You've dropped "s" in the word "across".─Oh，letter "s" should be doubled.A. a; aB. an; aC. an; theD. the; the2.Look at the__________words on the blackboard and_________me to read them.A. following;followingB.follow;followingC. follow;followD.following;follow3.Elephants ______Cute. Their large ears ______ open fans.A. look;lookB. look like;lookC. look;look likeD.look like;look like4. Walk ______ the road and turn left _______ Park Road,you will find the shop _____ your left.A. down, into, onB. along, to, inC. straight, into, onD. on, into, in5. We are happy ____you ____ a farewell party for our friends from Beijing.A. invite, toB. to invite, joinC. inviting, toD. to invite, to6. Tom, follow this morning.A. me homeB. me to homeC. have homeD. I to home7. Be sure ______ send my greetings to your mother.A. to sendB. sendingC. sendD. for sending8. _________ book on the table is __________useful one.A. A; anB. The; anC. A; theD. The; a9. Shanghai is __________ the east of China and is the west of Japan.A. in; inB. in; toC. to; inD. to; to10. your friend Jenny afraid of in front of her classmates?A. Is; speakingB. Is; to speakC. Are; speakingD. Are; to speak11. Work hard, you _________ pass the English exam this time.A. or, canB. but, canC. because, willD. and, will12. The zoo is only ________ my school, so you can walk __________ there.A. five miles away, toB. five miles far away; from, toC. five miles away from, /D. five miles far from, /13. Next to the school a road and across the road some fruit shops.A. are; isB. is; areC. are; areD. is; is14. Tom，to your teachers carefully in class，and you it easy to study well.A. listen; will findB. listens; findC. listen; findD. listens; will find15. ─Would you like to come to my party this afternoon?─ . I will have to help my mother look after my little brother.A. Good ideaB. I'd love to，but I can'tC. Sorry to hear thatD. See you then⼆、完形填空Things are always changing, like the clock, the weather, and even me. Nothing can always stay 1. My life is full of changes. Sometimes I don’t feel good about 2___, but later things become 3___.My pet cat, Taffy, runs away. We look for her 4__ the house but we cannot 5__ her. I miss her a lot and I am sad. Dad tells me that we can get 6 one. That makes me happy again, but I will always remember Taffy.My best friend, Robin, just moves away. The moving van takes away everything and the house is 7___ . Maybe I can not see her any more. Robin now lives _8__ the hills far away from here. Mums says we can take 9__ there and play with Robin again.The day I start the new school year, I am afraid of all my new 10__ in my class. I am afraid they _11_ like me, and I can’t run as they do. Now I am happy because I have lots of new friends. I __12_ my class and my teacher.Isn’t that wonderful? Yesterday I looked in the mirror. My __13_ looked like a Halloween pumpkin __14___ I lost my first tooth. I had a big surprise when I woke up this morning. Mum says long ago, she was _15__ just like me. Do you think some day I will change and grow up to be an artist like her?1. A. healthy B. the same C. different D. alive2. A. me B. him C. her D. them3. A. better B. more C. terrible D. interesting4. A. all over B. at C. between D. from5. A. look at B. listen C. find D. follow6. A. other B. the other C. another D. a7. A. old B. broken C. bright D. empty8. A. in the middle of B. under C. over D. at the foot of9. A. a bike B. a boat C. a walk D. a plane10. A. neighbours B. friends C. classmates D. students11. A. don’t B. aren’t C. can’t D. won’t12. A. miss B. love C. hate D. dislike13. A. face B. eyes C. ears D. mouth14. A. because B. so C. but D. or15. A. short B. young C. tall D. strong三、阅读理解AChinese people call the Spring Festival “Nian”. But do you know that Nian was once the name of a monster(妖怪)?A long time ago, the monster Nian lived in the mountains. It ate animals. But in winter, it could not find food. So it came to villages and ate a lot of people.People were so afraid of Nian that they locked their doors before evening came during the winter. One day, an old man came to a village. He told people there that Nian was afraid of three things---the color red, fire and noise.He told people to play drums and gongs, make big fires and set off fireworks to make Nian go away.On a moonless, cold night, Nian went to the village again. As soon as it opened its big mouth, people made loud noise and made fire. Nian was really afraid and ran away. Wherever it went, there was noise and fire.When Nian was tired and could not run any more, people killed(杀死) the monster.After that, on the coldest day of winter, people play drums and gongs, and set off fireworks to celebrate the death of the monster of Nian. They put up red lanterns and have a big dinner without sleeping during the night.In the morning, people greet each other happily. So now we have the Spring Festival.1. From the story, we know that long long ago, Nian was a(an) __________________.A. ghostB. animalC. monsterD. tortoise2. Nian ate people in winter because it __________________.A. had no food to eatB. liked to live in a villageC. wanted to make people afraidD. celebrated the Spring Festival3. The underlined words “drums and gongs” mean __________________.A. 扬琴B. ⼆胡C. 笛⼦D. 锣⿎4. People killed Nian after __________________.A. it ate all the animalsB. the old man came to a villlageC. people knew what it was afraid ofD. it was so tired that it couldn’t run away5. What is the best title(题⽬) for the passage?A. How the Spring Festival CameB. What the Spring Festival WasC. What People Did During NianD. How People Celebrated NianBA person spends three whole years of his life in the toilet. It's funny, isn't it? Toilets are very important in our life. But we don't care them too much. There is a special day for toilets. November 19 is World Toilet Day. It is a day to learn about toilets. There are some different kinds of toilets around the world. In Western countries，most people have toilets and running water in their homes. In Japan and South Korea，some people have special toilets. The toilets have heaters and can even play music. But, in some places, toilets are outdoors and they are called "outhouses". In China, you can find some outhouses on the street. Some cleaners work there to keep them clean.When you use the toilet，you should keep some manners(礼仪).Here are some good manners. Flush the toilet after you have finished using it. Wash your hands before you leave the restroom. If you need to go to a public toilet，don't forget to wait in line.1 .When is World Toilet Day?A. On November 9.B. On November 19.C. On November 29.D. On December 19.2. The underlined word "they" probably refers to(指的是) " ".A. the heatersB. the cleanersC. the toiletsD. the countries3. Here are some manners of using toilets. Which is a good manner?A. Flush the toilet before you use it.B. Wash hands before you leave the restroom.C. You don't need to wait for your turn.D. Invite one of your friends to go to the restroom.4 .Which of the following is NOT true according to the passage?A. We don't care toilets too much.B. Some westerners have toilets and running water.C. Some toilets can even play music.D. All the toilets are indoors.5 . What's the best title for the passage?A. Learn about ToiletsB. World Toilet DayC. Outdoor ToiletsD. Toilets with Heaters四、词汇A)请根据句意及汉语提⽰，写出所缺单词。
19—20学年五年级第一学期期末专项复习一(第4单元和第7单元知识梳理及单元测试卷)
第四单元和第七单元知识梳理1.小数加、减法(1)计算小数加、减法时，要把小数点对齐，也就是相同数位对齐，从低位算起如果哪位没有，就把那一位看成0，得出的和或差不要忘了点上小数点(得数里的小数点要和横线上的小数点对齐)。
得数是小数的，末尾的“0”要去掉。
(2)被减数是整数时，要添上小数点和根据减数的小数部分补上“”后再减。
2．小数加减混合运算小数加减混合运算的顺序与整数加减混合运算的顺序完全相同：没有括号的算式，按从左往右的顺序依次计算;有括号的，先算括号里面的，再算括号外面的。
3．运用加法交换律、结合律、减法的性质等，可以使小数加减法计算简便。
加法交换律：a＋b＝b＋a加法结合律:a＋b＋c＝a＋(b＋c)减法的性质:a－b－c＝a－(b＋c)。
4．运用小数加减法解决实际问题的思路与用整数加减法解决实际问题的思路相同，都需要在认真读题的基础上，理清思路。
5．用计算器计算小数的加减法使用计算器计算时，按从左往右的顺序依次按出每一个数和运算符号，最后按“＝”。
如果一个小数的整数部分是0或者末尾是0，那么这个0可以省路不按。
6．用一一列举的策略解决生活中的数学问题。
(1)列举:把事情发生的可能性有条理地找出来，从而找出问题的全部答案，这种策略叫作一一列举。
(2)列举的方式:列表、画“√”、画图、连线、按一定规律排列出来。
(3)用一一列举的策略解决问题，要做到不重复、不遗漏。
第四单元和第七单元检测卷一、填空题。
(29分)1．比8.4少0.17的数是( )（）比0.52多1.6；8.49比( )多1.2，比（）少1.2。
2．8个0.1和72个0.01合起来是（）。
3．一个加数是两位小数，另一个加数是三位小数，它们的和是（）位小数。
4.姚明的身高是2.26米，张老师的身高是1.78米，两人相差( )米。
5．百米赛跑，小明用了17.6秒，小刚用了19.2秒。
( )跑得快，快( )秒。
6．10.8与1.5的和比它们的差大（）。
人教版七年级英语下册Unit4 单元测试4(附答案)
Unit 4 Don’t eat in class.单元测试一、单项选择（）1. ______ turn on (打开)the TV. Your brother is doing his homework.A. NoB. NotC. Don’tD. Doesn’t（）2. Our teacher often tells us _______ eat in the classroom.A. notB. don’tC. neverD. not to（）3. Tom plays _______ piano well and I play ______ football well.A. the; aB. a; theC. the; /D. /; the（）4. It’s raining. So we _____ stay at home.A. canB. have toC. has toD. are（）5. ______ the tape carefully.A. ListenB. Listening toC. Listen toD. Listening（）6. Don’t arrive ______ school.A. lateB. late forC. later forD. late to（）7. There is ______ water in the lake.A. too manyB. many tooC. too muchD. much too（）8.—Can you speak English?—______. It’s easy.A. Yes, I canB. No, I can’tC. Yes, I can’tD. No, I can（）9. Can you ______ some salad ______ here?A. bring, /B. take; toC. bring; toD. take; /（）10. Don’t be ______, please. The baby is sleeping.A. noiseB. quietC. noisyD. dirty二、完形填空I’m glad that you can do the things you like at home, 1 I can’t. I have 2 rules in my house. I have to get up 3 six o’clock every morning. Then I make my bed and clean my room. I can’t 4 friends after school because I have to 5 my homework. I can’t 6 TV 7 school nights. And I have to 8 before ten o’clock. On weekends, I have to go to the Children’s Palace 9 to play the piano. I never have 10 fun!（）1. A. but B. and C. so D. because（）2. A. too much B. much too C. too many D. many too（）3. A. in B. on C. at D. about（）4. A. see B. seeing C. too see D. sees（）5. A. does B. doing C. did D. do（）6. A. see B. watch C. look D. look at（）7. A. in B. on C. at D. /（）8. A. be bed B. go bed C. go to bed D. in bed（）9. A. learn B. to learn C. learning D. learned（）10. A. some B. much C. a D. /三、阅读理解Do you know me? My name is Mary. Do you have any rules in you school? There are many rules in my school. Let me tell you some of them.We have to wear uniforms every day. I don’t think this rule is good. We are kids, and we need to be beautiful. We can’t be late for school. And we can’t eat or sing loudly in the classroom. This rule is OK. We can’t run in the dining hall or the hallways. And we can’t fight. I think these two rules are for boys. For girls, we can’t have long hair. I don’t think this rule is good. I can’t stand it.根据短文内容，选择正确答案。
牛津译林版七年级英语下册7B Unit4单元测试卷(附答案)
7 B Unit4 Finding your way单元过关自测题第一部分：听力测试（15分）I. 听力。
A）听对话回答问题，听两遍。
( )1.How can the woman get to the post office?A. B. C.( )2. Which animal can help people?A. B.C.( )3. How will Kate go to Beijing?A. B.C.( )4. What is Simon playing?A. B.C.( )5. What time is it now?A.14: 00B. 6:00C. 20:00( )6. How many blue pens are there?A. OneB. FourC. Three( )7. What can the woman see?A. Some booksB. A boxC. Some bananas ( )8. Where are the two speakers?A. At schoolB. In the libraryC. In a bookshop ( )9. Where is Mary?A. In the classroomB. In the Teachers’ officeC. At home( )10. What’s the new teacher like?A. She likes all of us.B. She teaches very well.C. She is tall and slim.B.听第一段材料，回答11-12小题。
( )11. Jim has breakfast at__________.A. 6:00 B: 6:30 C. 6:13( )12. Fangfang has______________for breakfast.A. Bread and milkB. Bread and an eggC. An egg and milk( )13. A. Five months old. B. Five years old. C. Six months old. ( )14. A. Cute and clever B. Clever and funny C. Funny and cute( )15. A. To jump up the tree. B. To sleep in the tree.C. To sleep in front of the house.第二部分：笔试（85分）II. 单项选择。
七年级历史上册第四单元测试题及答案
七年级历史上册第四单元测试题及答案七年级历史上册第四单元测试题及答案学完七年级历史第四单元这一知识后，我们就要及时做好历史第四单元的练习题才能巩固好知识。
以下是店铺给你推荐的七年级历史上册第四单元测试题及参考答案，希望对你有帮助!七年级历史上册第四单元测试题一、单项选择：题号 1 2 3 4 5 6 7 8 9 10答案题号 11 12 13 14 15 16 17 18 19 20答案1、下列选项中，不属于曹操取得能够同袁绍集团隔黄河对峙局面的原因是：A、挟天子以令诸侯B、招纳贤士C、实行屯田D、曹操奸猾2、200年，曹操战胜袁绍的战役是：A、官渡之战B、长平之战C、赤壁之战D、淝水之战3、杜甫在一诗中曾提到：“三顾频频天下计，两朝开济老臣心。
”其中的“老臣”指：A、刘备B、诸葛亮C、周瑜D、曹操4、208年，曹操准备统一全国，在与孙权、刘备联军的决战地点是：A、官渡之战B、长平之战C、赤壁之战D、淝水之战5、建立魏政权的是：A、曹操B、曹丕C、曹植D、曹睿6、秦汉时期，我国经济重心在：A、北方B、东方C、南方D、西方7、下列选项中，不是西晋后期北方人民纷纷南迁原因的是：A、东汉末期起，北方社会动荡不安，而南方比较安定B、北方人民躲避战乱C、匈奴等西方少数民族不断向中原推进D、北方人民志愿到南方参加南方的开发8、北方人民南迁主要分布在：A、淮河流域B、长江流域C、珠江流域D、岭南一带9、江南经济得到发展的原因有：①北方人中大量南迁;②大量劳动力的补充;③先进生产工具的带来;④先进生产经验的带来;⑤自然条件十分优越A、①②③④⑤B、①②③④C、②③④⑤D、①②④⑤10、下列叙述中，哪些可以表明南方经济的发展：①大量湖田的开辟，各种种植技术的结合，水利工程的兴修;②织锦技术的迅速提高;③灌钢法的`发明;④青瓷烧制技术的提高并使青瓷成为人们日常用具;⑤商品经济的发展与城市的繁荣A、①②③④B、②③④⑤C、③④⑤D、①②③④⑤11、北魏孝文帝迁都洛阳的目的是：A、为了便于扩大势力B、改变鲜卑人的生活环境C、与汉族和睦相处D、为了便于和接近汉族先进的文化，从而进一步加强对黄河流域的控制12、在迁都洛阳之前，北魏的都城在：A、咸阳B、平城C、长安D、建康13、世界上第一个将圆周率计算到小数点后第七位的人是：A、贾思勰B、郦道元C、祖冲之D、商高14、我国现存最早的第一部完整的农学著作是：A、《九章算术》B、《齐民要术》C、《水经注》D、《水经》15、“飘若浮云，矫若惊龙”是对谁的书法的美称：A、王羲之B、王献之C、顾恺之D、祖冲之16、最能体现三国两晋南北朝时期艺术成就的是：A、书法B、绘画C、雕塑D、石窟艺术17、东汉末年政局最主要的特点是：A、宦官专权B、军阀割据C、大一统局面D、外族侵扰频繁18、下列事件不是发生在三国时期的是：①、曹操控制了汉献帝;②官渡之战;③赤壁之战;④、刘备到得诸葛亮的辅佐;⑤、刘备称帝A、①②③④⑤B、①②③④C、③④⑤D、①②④19、江南经济得以迅速发展，最主要的原因是：A、气候温暖湿润B、土地肥沃C、种植水稻D、北人南迁20、下列人物生活在同一个朝代的是：A、王羲之与顾恺之B、曹操与孙权C、祖冲之与贾思勰D、王羲之与祖冲之二、填空：1、东汉末期，乘北方混战之机，占据了长江下游的江南地区。
人教版小学四年级下册数学单元测试7.图形的运动(二)(含答案)
14.移一移，画一画，再计算下面几个图形的周长，并说一说你发现了什么。（单位：厘米）
①
②
③
五、综合题
15.左边的图形是如何变成右边的图形的？
（1）红色三角形：________
（2）蓝色三角形：________
（3）黄色三角形：________
7.【答案】错误
【解析】【解答】解：因为平行四边形无论沿哪一条直线对折，对折后的两部分都不能完全重合，所以平行四边形不是轴对称图形．
答：平行四边形是轴对称图形，这种说法是错误的．
故答案为：错误．
【分析】依据轴对称图形的定空题
9.【答案】0，1，3，8，10
【解析】
②
③
（11+9）×2=20×2=40（厘米）。
答：通过平移发现，平移后三个图形一样，都是长方形，周长都是40厘米。
【解析】【分析】先进行平移，平移后可以看出，三个图形都是长是11厘米，宽是9厘米的长方形。
五、综合题
15.【答案】（1）解：先向上平移1格，再向右平移7格。
（2）解：先向上平移1格，再向右平移11格。
（4）绿色三角形：________
六、应用题
16.图形请向上平移3个格．
参考答案
一、单选题
1.【答案】A
【解析】把一个图形对折，对折后两边能完全重合，这个图形就是轴对称图形。折痕所在的这条直线叫做对称轴.
是对称图形.选A．
2.【答案】C
【解析】【解答】第一、二、四、五的汽车标志都可以沿中线对折后重合，故选C。【分析】本题考查学生对图形轴对称的理解，而且考查学生平时观察事物的细心程度。
【解析】【分析】小鸡喜欢吃虫，小羊喜欢吃青草，小狗喜欢吃肉骨头，小猫喜欢吃鱼，根据方格图可知，小鸡先向下走2格，再向右走5格可以吃到小虫子；小羊先向下走3格，再向左走3格可以吃到小草；小狗先向上走3格，再向右走2格可以吃到肉骨头；小猫先向上走2格，再向左走4格可以吃到小鱼，据此画线即可.
2021年最新人教版七年级下册英语Unit 4单元测试题(有答案)
七下Unit 4单元测试题（总分150）Ⅰ.读音选词（共5题，每小题1分，共5分）( )1. It is very [ɪm'pɔrtnt] for us to learn English well.A.impossibleB. importantC. practiceD. remember( )2. We must eat in the ['daɪnɪŋ] hall.A.drawingB. livingC. bedroomD. dining( )3. Don’t [faɪt] with your friends.A.flyB. fineC. fightD. follow( )4. Do you have to wear a school ['ju:nɪfɔ:m] on school days?A.uniformB. usuallyC. unitedD. university( )5. Linda likes playing the piano, so she ['præktɪsɪz]playing it every night.A.practicesB. practiceC. placeD. popularⅡ.单项选择（共40题，每小题1分，共40分）( )1.Don’t ______ in class, Jim. A. talks B. talk C. to talk D. talking ( )2.Don’t listen to music in the classrooms the hallways.A.andB.orC.yetD.but( )3.We should ________ the teacher carefully in class.A. listenB. hearC. listen toD. listening to( )4.Don’t ________ food to school, or I take it away.A. takeB. bringC. getD. brings( )5.Students can’t _______ hats in the classroom.A. wearB. put onC. dressD. get dressed( )6.Her mother is ill. She _______ look after her at home. A. must B. have to C. has to D. is ( )7.“Don’t arrive late ______ school, boys and girls!” the teacher says.A. inB. atC. toD. for( )8.Jim gets to school ______ time every day. A. at B. on C. for D. by( )9.Liu Mei often helps her mother _______ breakfast on weekends.A. eatB. makesC. to makeD. making( )10.I can’t see my friends _______ school nights.A. atB. inC. onD. to( )11.The students in China have __________ homework to do every day.A. too manyB. too muchC. much tooD. many too( )12.My parents are very strict ______ me. A. with B. in C. at D. for( )13.The old man keeps _________ every day.A. exerciseB. exercisesC. to exerciseD. exercising( )14.Remember _______ me your photo when you come to school tomorrow.A. to bringB. bringC. bringingD. brings( )15.We should eat more vegetables to keep ourselves ___________.A. healthB. healthyC. unhealthyD. strongly( )16.We must ______ quiet in class. A. are B. be C. is D. /( )17.This is _____ my first day at school. A. / B. the C. a D. an( )18.She often practice _____the piano on weekends. A. to play B. play C. playing D. plays ( )19.I must read a book before ______ TV.A. watchB. watchingC. watchesD. to watch( )20.Dave can’t play football after school on school days , and he can’t see his friends, ______.A. tooB. eitherC. as wellD. also( )21.Don’t forget________ me this evening. A. to call B. call C. calls D. calling ( )22.Don’t talk ________ in the library. A. loud B. loudly C. low D. lowly( )23.-Can your brother swim? -________.A. Yes, he can’tB. Yes, please .C. No, he can’tD. Yes, he does( )24.” No______ !” says the sign.A. smokeB. smokingC. smokesD. to smoke( )25. ________ look outside，Bruce．Look at the blackboard．A．No B．Don’t C．Can’t D．Doesn’t( )26. Usually they _________ rules, and we must follow ________.A. make, itB. make, themC. makes, it D makes, them( )27. --- _________ in the hallways. --- Sorry, sir.A. Not runB. Don’t runC. Not runningD. Don’t running( )28. ---Does he like _____________ music? --- Yes, he does.A. listening toB. listen toC. listenD. listening( )29. We _____________ in the classroom.A. have to quietB. have quietC. have to be quietD. have quiet to( )30. Don’t ________ and don’t _________ in class.A.eat, noiseB. to eat, noisyC. to eat, noiseD. eat, be noisy( )31 Don’t ______your homework at school .A leaveB takeC bring Dget( )32 I have __ rules in my home. We have ___ homework to do today.A. too many, too muchB. too much , many tooC. too many, much tooD. much too, many too( )33. When you are late for class, your teacher often says, “____.”A. Don’t run in the hallways.B. You are not right.C. Don’t arrive late for class againD. You are right( )34.Molly’s mother asks molly to keep her hair _______.A shortB shortsC shortingD to short( )35 The girl ____ red is my little sister Mary . A.wear B.in C.wears D.to wear ( )36—Don’t eat in class ,Paul . --_________.A Good ideaB Sorry ,Mr. Wang . I won’t .C Thanks a lotD That sounds terrible ( )37.We all have fun ______music class . A take B have C having D to have ( )38—Mum , must I stay in the library the whole morning ?--No, you ____________. You _______come back if you like .A can’t , mustB needn’t , canC mustn’t ,canD can’t ; need( )39.Lily enjoys __________pop music .She thinks it makes her excitedA listeningB listensC to listenD to listen( )40 Mother’s Day is ______the second Sunday in May in the united states .A onB inC atD toⅢ.完形填空(15分)I 1 in a school library，and there 2 many kinds of 3 in it，for example，booksabout English，science，history，music and so on．You 4 do some reading or borrow books from it．But there are some 5 ．You must obey(遵守) 6 ．When you are reading 7 the library，you have to 8 quiet．Don’t talk loudly or make any noise．You 9 listen to music，10 ．You can’t take your bags or wet umbrellas（雨伞）into the library．11 or drink in the library．You can borrow books from the library，12 you can’t lend（借出）them to 13 ．You have to take good care of（好好保管）14 and return them on time（按时归还）．If the library books are 15 ，you have to pay for（赔偿）them．( )1．A．job B．works C．worked D．work( )2．A．is B．am C．be D．are( )3．A．people B．books C．magazines D．newspapers( )4．A．can B．have to C．can’t D．don’t( )5．A．magazines B．rules C．CDs D．questions( )6．A．that B．them C．it D．this( )7．A．on B．to C．in D．0f( )8．A．be B．are C．/ D．have( )9．A．don’t B．aren’t C．have to D．can( )10．A．also B．too C．to D．either( )11．A．Not eating B．Not eat C．Don’t eat D．Can’t eat( )12．A．but B．if C．when D．where( )13．A．others B．me C．other D．us( )14．A．they B．it C．their D．them( )15．A．lose B．lost C．find D．foundⅣ.阅读理解（30分）AToday is Sunday, and there will be a concert at Hong He Concert Hall at 7:00 pm. Mr. Smith arrives there early, and he is reading the “ Notice to the Audience ( 听众须知)” .Notice to the Audience1.Dress neatly (整洁) and don’t wear slippers( 拖鞋) into the concert hall.2.Don’t take food or drink into the hall.3.Don’t take children under 1.2m in height into the concert hall.4.Keep off all the mobile phones during the concert.5.Don’t take photos during the concert.6.Don’t smoke in the concert hall.根据短文内容选择正确答案：( )1. What day is it today?A. It’s Saturday.B. It’s Sunday.C. It’s Monday.D. It’s Friday. ( ) 2. What time is it now?A. 7:00 am.B. Before 7:00 in the morning.C. 7:00 pm.D. Before 7:00 p.m. ( ) 3. Mr. Smith is _______.A. listening to the concertB. waiting for his friendsC. reading the noticeD. watching a movie( ) 4. The audience have to ________.A. wear slippersB. make phone callsC. eat or drink somethingD. dress neatly( ) 5. Which is right?A. Children under 1.2 m can’t come into the hall.B. People with no mobile phones can’t come into the hall.C. If you want, you can smoke in the hall.D. You can take some photos during the concert.BHigh school students in America hear about twenty bells every day．The first bell is the tardy bell（上课铃）．If students are not in their seats when the tardy bell rings，they know they are late．Another bell rings at the end of each class，and everyone leaves class quickly and goes to the next class．When students are in a hard class，they are often happy to hear the bell ring．If the class is interesting（有趣的），they do not want the bell to ring．Most students like the lunch bell best．They know that it is time to join（参与）their friends for lunch．They buy a hot meal in the school dining hall or they bring their lunch meal in the school dining hall or they bring their lunch from home in a big paper bag．After a nice lunch，everyone knows that it is soon time for another bell，another bell，another bell...( )6．American students in high school hear about ________ bells every day．A．many B．twenty C．twelve D．much( )7．The students know they are late if they ________．A．don’t com e to school earlyB．are not in their seats when they hear the first bellC．hear another bell in the classroomD．are in their seats before the first bell rings( )8．The students are happy to have _______．A．interesting classes B．a hard class C．all the classes D．a difficult class ( )9．Why do most students like the lunch bell best? Because _______．A．they don’t like their classes at allB．they can enjoy（享用）their mealsC．they can join their friends for lunchD．they can have a lot of food to eat( )10．The students usually have their lunch _______．A．at school B．in the restaurant C．at home D．at the partyCWe are all leaning English, but how can we learn English well? A student can know a lot about English, but maybe(可能)he can’t speak English.If you want to know how to swim, you must(必须) get into the river. And if you want to be a football player, you must play football.So, you see. You can learn English only by using it. You must listen to your teacher in class. You must read your lessons every day. You must speak English to your classmates and also you must write something sometimes. Then one day, you may find your English very good.( )11. You know a lot about English but maybe you __________.A. can speakB. can study itC. can’t study itD. can’t use it( )12. If you want to learn to swim you should _________.A .get into the river B. r ead books about swimmingC. learn from other people firstD. play football well first( )13. If you want to be a football player, you should _______.A. buy a good footballB. practice footballC. watch others play footballD. put your football away( )14. The story of learning swimming and playing football tel ls us ________.A. we learn English by using itB. swimming needs waterC. playing football is easyD. learning English is difficult( )15. If you want to study English well, you must often _________.A. speak EnglishB. write in Eng ishC. listen to EnglishD. A, B and CV. 选词填空（10分）A 阅读短文，从方框中选择适当的单词填空。
冀教版四年级上册数学单元测试-7.垂线和平行线(含答案)
四年级上册数学单元测试-7。
垂线和平行线一、单选题1.在同一平面内，两条直线一定（）。
A. 相交B. 平行C. 相交或平行2.甲从A点出发向北偏东60°走了30米到达B点，乙从A点出发向西偏南30°走了40米到达C点，那么B、C两点距离是（）。
A. 90米B. 70米C. 40米D. 无法确定3.两条平行线间可以画( )条线段。
A. 1B. 2C. 3D. 无数条4.下面图形中，只有两组平行线的图形是( )。
A. B. C. D.二、判断题5.两条直线相交成直角时，这两条直线互相垂直。
6.两条线段互相平行，它们也一定相等．7.两条直线相交所成的四个角中，如果有一个角是90°，那么这两条直线互相垂直。
8.在同一平面内分别有两条不重合的直线a、b分别和第三条直线互相垂直，直线a、b互相平行。
三、填空题9.过直线外一点能画________条这条直线的垂线．10.从直线外一点到这条直线可以画无数条线段，其中最短的是和这条直线________的线段。
11.两条直线相交，组成4个角，如果其中一个角是90度，其他三个角都是________度，这两条直线叫做________，两条直线的交点叫做________．12.长方形、正方形________的两条边互相垂直，________的两条边互相平行。
四、解答题13.在下图上完成下列问题。
（1）科技馆在学校北偏东300方向2000米处。
请在图中标出科技馆的位置，并标出数据。
（2）南京路经过电影院，与上海路平行。
请用直线标出南京路的位置。
14.把直线外一点A与直线上任意一点连接起来，可以画出很多条线段，哪一条最短呢?如图所示，我们可以画好多条这样的线段，不过，最短的只有一条哦!五、应用题15.如图是一个梯形的广场①从A点走到对边CD，怎样走最近，在图上画出来．②过A点作BC边的平行线．③量出∠ADC的度数，并标在图中．答案一、单选题1.【答案】 C【解析】【解答】解：在同一平面内，两条直线一定相交或平行。
牛津译林版七年级英语下册7B Unit4单元测试(含答案)
七年级下学期英语Unit 4 单元测试一、单项选择题：( ) 1.--Do you know how to spell _____________ word "napkin" in English?--Yes. It begins with "n".A. the; aB. the; anC. a; anD. the; the( )2. Our bus goes ____________ the Great Hall of the People.A. pastsB. pastC. passD. passes( )3.--Excuse me, can you tell me ____________ to the zoo?--Of course.A. how getB. how to getC. how gettingD. how to getting ( )4. Don't talk to the bus driver while he is driving _____________ the bus.A. in front ofB. in the front ofC. at the back ofD. at back of( ) 5. If you take the subway to the hospital, it only ________ you ten minutes to get there.A. takesB. bringsC. spendsD. gets( ) 6. You are going the wrong way. I will take one instead.A. the otherB. otherC. anotherD. others( ) 7. Her computer . Can you help her mend it?A. doesn’t doB. didC. worksD. doesn’t work( ) 8. The boys school uniform thieves (小偷).A. with, isB. with, areC. in, isD. in, are( ) 9. There a singing concert in our school this evening.A. hasB. is going to haveC. is going to beD. will have( ) 10. He play computer games he finishes his homework.A. won’t, untilB. will, thatC. will, untilD. / , when( ) 11. —Can I be a member of the Drawing Club?—Of course you can. can be a member of it if he likes drawing.A. EachB. NobodyC. EverybodyD. All( ) 12. The little girl the man. She must be his daughter.A. looks atB. looks afterC. looks forD. looks like( ) 13. Bob seldom watches TV. He says reading makes him happy.A. feelB. to feelC. feelingD. to feeling( ) 14. I can’t see the blackboard because a tall boy sits me.A. in the front ofB. next toC. behindD. in front of( ) 15. —Excuse me. ?—Just go along the street and turn right at the first crossing.A. What should I doB. When can we get to the zooC. How can I get to the zooD. Where shall we go二、完形填空Beijing Zoo 1 wild and rare (稀有的) animals growing in China, such as the Panda and the Golden Monkey. Also, it owns many rare animals from all around the world 2 White Bear from the North Pole, Kangaroo(袋鼠) 3 Australia, Zebra from Africa(非洲).There are too many buildings in Beijing Zoo, including(包括) the monkey hill, the panda hall, the lion and tiger hill, the elephant hall, and many 4. . There are more than 30 large halls. It5 more than 7, 000 population(动物群) of animals. ,Beijing Ocean Hall 6 the biggest ocean hall in China. There you can 7 the different kinds of fish, you 8 watch the dolphin shows. You can 9 the many old buildings inside Beijing Zoo.If you are going there, you can take the No 7,11, 27,103,105 buses. They will 10 you right there.( ) 1. A. shows B. show C. showing D. showed( ) 2. A. such as B. like C. and so on D. /( ) 3. A. in B. from C. at D. of( ) 4. A. other B. others C. the other D. another( ) 5. A. is B. has C. was D. have( ) 6. A. has B. is C. be D. have( ) 7. A. enjoy B. to enjoy C. like D. buy( ) 8. A. also can B. can also C. also D. can( ) 9. A. visit B. see C. look D. watching( ) 10.A. by B. take C. bring D. send三、阅读理解AMan：Good morning, sir! Can I help you?Mr Read：Yes, please. What would you like, Ann?Ann: A hamburger and some potato chips.Mr Read：Anything to drink?Ann: A glass of coffee.Man：With ice?Ann：Yes, thank you.Mr Read：Tom, what would you like?Tom：I’m not hungry. Just a big glass of cola with ice, please.Mr Read：No food?Tom：No. What would you like, Dad?Mr Read：I’d like some rice and fish, and a glass of cola with ice.( )1. How many people are there in the dialogue?A. Three.B. Four.C. Five.D. Six. ( )2. Where do you think this dialogue may happen(发生)?A. At schoolB. At home.C. In a restaurant (餐馆)D. In the classroom.( )3. What does Ann want to drink?A. Cola.B. Tea.C. Coffee.D. Water.( )4. Does Tom want to eat something?A. Yes.B. No.C. I don’t know.D. Want ( )5. Mr Read wants to eat _______.A. some potato chipsB. a hamburgerC. some rice and fishD. some potatoesBWelcome to the National Museum of Mathematics (MoMath). It is in New York City. It is America’s first math museum. It’s also a fun place for both kids and their parents.Open its door, you will open a new world of numbers, shapes (形状) and colours, and you will find math is interesting. You can take part in many games and activities. They help you better understand math problems. “We want to give people fun ways to learn math,” MoMath founder (创始人) Glen Whitney said. “Here you can try ridi ng a tricycle (三轮车) with square wheels (轮子). You can hop (跳跃) from one point to another and join lines to get pictures.”The museum is located (位于) at 11 East 26th Street in Manhattan and is open from 10:00 a.m. to 5:00 p.m., seven days a week, 364 days a year (It is closed on Thanksgiving Day). MoMath closes early on the first Wednesday of every month, at 2:30 p.m. The ticket prices are $15 per adult and $9 per child, student, or the old people.MoMath also has a travelling museum — Math Midway. It runs around the country to schools and community centres. So you still can enjoy the fun of math even you live far from New York City.( ) 6. What is the passage about?A. A math museum.B. A science museum.C. A national museum.D. A history museum.( ) 7. One can’t ______ in the museum.A. learn coloursB. play gamesC. ride a tricycleD. eat food( ) 8. When does the museum close on the first Wednesday in January?A. At 10:00 a.m.B. At 2:30 p.m.C. At 5:00 p.m.D. At 10:00 p.m.( ) 9. How much is the ticket for a student?A. $15.B. $9.C. $10.D. Free.( ) 10. Which of the following is NOT true about Math Midway?A. It goes into different schools.B. It runs around the USA.C. It’s a travelling museum.D. It’s in Manhattan.CThere are about 56 million people in the United Kingdom. This is a big population for such a small country. But large parts of the country have few people. Most of the population is crowded into the big cities and industrial areas. About 90% of the people live in cities and towns. Only about 10% live in the countryside. Today very few people—less than 2% of the population—are farmers and farm workers.England has the most people. About 46 million live in England, Of these, about 14 million live in London and the south-east. London is now a pity of about 7 million people. Most of Scotland’s population of 5 million live in the middle part. He re are the cities and towns of the industrial area. The mountains in the north and the south have a very small population. Fewer than 3 million people live in Wales. Like Scotland, most of the population live in the industrial area in the south. There are only about one and a half million people in Northern Ireland, and one-third live in and around the big industrial city of Belfast.( )11. The United Kingdom _______.A. is a large countryB. has many peopleC. has a small populationD. is a small country without many people( )12. Most of the people live _______.A. in cities and townsB. in the countrysideC. in every part of the countryD. near rivers( )13. London is a _______city.A. quietB. smallC. crowdedD. new( )14. Scotland is the _______ largest in population in the United Kingdom.A. firstB. secondC. thirdD. fourth( )15. Northern Ireland is _______.A. the name of a countryB. a small city of the United KingdomC. a country with a smaller populationD. one part of the United Kingdom四、根据句子意思，用括号中所给单词的正确形式填空。
北师大版小学三年级下册数学第一单元《元、角、分与小数》单元测试4(附答案)
北师大版小学三年级下册数学第一单元《元、角、分与小数》单元测试4（附解答）一、填空题。
（第1～3、5～7题每题4分，第4题6分，共30分）1、3.45元 =（ ）元（ ）角（ ）分 8.7元 = （ ）元（ ）角 4元5角 = （ ）元6角 =（ ）元2、3.74读作： 60.97读作： 0.76读作： 32.32读作：3、三点六七写作： 二点零五写作： 九十三点七写作： 九点九九写作：4、在○里填上“﹥”“﹤”或“=”。
6.23元元 8.05元元 1元元6.50元元 0.93元元 4.96元4.92元5、3.5﹤ ﹤4 ﹥0.63.50 ﹥ ﹥3.40 ﹤4.32 6、写出5个比10小的小数。
、 、 、 、 。
7、写出下面书的价格。
二、判断题。
（对的在括号里打“√”，错的打“×”。
）（每题1分，共4分）1、3元5角2分是3.52元。
（ ）2、3.72读作三点七十二。
（ ）3、3元加3角等于6角。
（ ）4、比3.2多1.3的数是4.5。
（ ）三、用竖式计算。
（每题3分，共12分）100－31.6 4.9＋11.8 6.1－5.8 14.9－9.9四、数学门诊部。
（每题2分，共8分）1 0 7. 1 14. 8 7. 8＋ 3. 6 － 2. 9 － 3 ＋ 4. 7 4. 6 5. 8 14. 5 11. 5五、接力赛。
（每题4分，共8分）1、2、六、列式计算。
（每题3分，共6分）1、8.7元比12元少多少？2、两个加数都是6.9，和是多少？七、解决实际问题。
（第1题20分，第2、3题分题6分，共32分）1、＋5.6 －2.4 8.6 －3.7 ＋5－4.5＋2.38.6 －0.9＋1.8（1）一本《字典》多少钱？（2）一本《数学大世界》多少钱？（3）这三种书各买一本，要付多少钱？（4）小明用10元钱，买一本《故事书》与一本《数学大世界》够不够？2、妈妈带了30元上街买菜后，还剩下14.6元。
【2021精品试卷】人教版四年级数学下册《7.图形的运动(二)》-单元测试4
人教版四年级数学下册《7.图形的运动（二）》-单元测试4一、单选题(总分：40分本大题共8小题，共40分)1.(本题5分)在图中，可以画（）条对称轴．A.2B.4C.无数2.(本题5分)下列图形中，不是轴对称图形的是（）A.B.C.D.3.(本题5分)把一张长方形纸对折后再对折，沿着折痕所在的直线画出台灯的一半，把它沿边缘线剪下来，能剪出( )个完整的台灯。
A.1B.2C.3D.44.(本题5分)下面图形中，（）不是轴对称图形．A.B.C.D.5.(本题5分)所有的（）都是轴对称图形．A.三角形B.平行四边形C.长方形D.梯形6.(本题5分)在下面的三角形中，（）一定是轴对称图形．A.直角三角形B.等边三角形C.一般三角形7.(本题5分)对称轴最多的图形是（）A.长方形B.正方形C.等腰梯形D.等边三角形8.(本题5分)长方形是轴对称图形，它有（）条对称轴．A.1B.2C.4D.无数二、填空题(总分：25分本大题共5小题，共25分)9.(本题5分)一个正方形沿边对折两次后得到________形。
10.(本题5分)下面是我国几个银行的标志图，____是轴对称图形．A．B．C．D．11.(本题5分)三角形的对称轴只有一条．____．（判断对错）12.(本题5分)我在暑假学会了剪纸，请欣赏我的作品．（1）“兔子”图案是轴对称图形，图中虚线所在的直线是它的____．（2）成轴对称的两个图形沿____折叠后可以____重合．（3）轴对称图形上对称的两点到____的距离相等．13.(本题5分)三个大小不同的圆不可能组成轴对称图形．____．（判断对错）三、解答题(总分：35分本大题共5小题，共35分)14.(本题7分)确定位置，移一移：（1）小房子向____平移了____格．（2）画出平行四边形的另一半，使它成为一个轴对称图形，再将画好的轴对称图形向左平移5格．15.(本题7分)（1）画出小旗向右平移3格再向下平移2格后的图形．（如图1）（2）分别画出将图形向上平移3格后，再向左平移8格的图形．（如图2）16.(本题7分)按要求画一画．（1）将正方形先向右平移5格，再向下平移6格．（2）将三角形先向上平移6格，再向左平移4格．17.(本题7分)画出图形的另一半，使它成为轴对称图形．18.(本题7分)画出下面各图形的轴对称图形．人教版四年级数学下册《7.图形的运动（二）》-单元测试4参考答案与试题解析1.【答案】：B;【解析】：解：正方形有四条对称轴，这四条对称轴也是内圆的对称轴，所以这个组合图形的对称轴有4条，即正方形的对称轴．故选：B．2.【答案】：B;【解析】：解：根据轴对称图形的意义可知：、都是轴对称图形，而不是轴对称图形；故选：B．3.【答案】：B;【解析】：把一张长方形纸对折后再对折，长方形在折时，是轴对称图形。
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必修2单元测试题4—7单元班级姓名一、选择题1．下面是4位同学拼制的DNA分子部分平面结构模型，正确的是（）2. DNA分子的特异性是指不同生物的DNA分子中含有（）A．特定的碱基种类B．特定的核昔酸种类C.特定的核昔酸数目D.特定的核昔酸排列顺序3. 若用DNA酶处理S型肺炎双球菌，再使其与活的R型肺炎双球菌（无毒性）一起感染小鼠，结果是（）A.小鼠不死亡B.小鼠死亡C.从小鼠体内可分离得到S型活菌D.从小鼠体内可分离得到S型菌的DNA4．对一个动物个体来说，几乎所有的体细胞都含有相同的基因，但细胞与细胞之间存在功能的差异，这是因为它们合成不同的（）A．信使RNA B．转运RNA C．氨基酸D．DNA5．一条DNA链的核苷酸序列是TAC—CGG—AGT，下列哪一项是由此链转录产生的mRNA是（）A．UAC—CGG—AGU B．ACU—GAA—CGAC．ATG—GCC—TAC D．AUG—GCC—UCA6．下图表示遗传信息传递方向，正常动植物细胞中能够发生的是（）A．①②B．①②③C．①②③④D．①②③④⑤7．如果一条多肽链中有肽键1000个，则作为合成该多肽链的信使RNA分子和用来转录该信使RNA分子的基因中，分别至少要有碱基( )个。
A.1000和2000B.2002和4004C.3003和6006D.3003和30038．下列有关基因重组的叙述，不正确的是（）A．基因重组是生物变异的根本来源B．基因重组能够产生多种基因型C．基因重组发生在有性生殖的过程中D．非同源染色体上的非等位基因可以发生重组9．用一定剂量的秋水仙素处理某种霉菌，诱发了基因突变，秋水仙素起作用的时期最有可能在( )A．有丝分裂间期B．有丝分裂前期C．受精作用过程D．有丝分裂后期10．基因突变是指（）A．基因重组B．DNA分子碱基顺序变化C．染色体缺损D．遗传密码改变11．从理论上分析下列各项，其中错误的是（）A．二倍体×四倍体→三倍体B．二倍体×二倍体→二倍体C．三倍体×三倍体→三倍体D．二倍体×六倍体→四倍体12．下列关于单倍体、二倍体、多倍体的叙述不正确的是( )A．由合子发育成的生物体细胞中有几个染色体组就叫几倍体B．由配子发育成的生物体，细胞中无论有几个染色体组也只能叫单倍体C．单倍体一般高度不孕，多倍体一般茎秆粗壮，果实、种子较大D．单倍体都是纯种，多倍体等位基因至少有三个13．如右图若要对此果蝇进行染色体的脱氧核苷酸序列的测定，那么需要测定的染色体是（）A．Ⅱ、Ⅲ、Ⅳ、Y B．Ⅰ、Ⅲ、Ⅳ、XC．Ⅱ、Ⅲ、Ⅳ、X、Y D．Ⅱ、Ⅱ、Ⅲ、Ⅲ、Ⅳ、Ⅳ、X、Y14．在农作物的育种上，采用的方法有：杂交育种、诱变育种、多倍体育种、单倍体育种，它们的理论依据依次是( )①基因突变②基因互换③基因重组④染色体变异A．③①④④B．④①②④C．④④①③D．④③①④15．细胞的有丝分裂与减数分裂都可能产生可遗传的变异，其中仅发生在减数分裂过程的变异是() A．染色体不分离或不能移向两极，导致染色体数目变异B．非同源染色体自由组合，导致基因重组C．染色体复制时受诱变因素影响，导致基因突变D．非同源染色体某片段移接，导致染色体结构变异16．若生物体的DNA分子增加了一个碱基对，这种变化属于（）A．基因突变 B．基因重组 C．染色体结构变异 D．基因自由组合17．有关基因突变的说法，不正确的是()A．基因突变在自然界中广泛存在B．生物所发生的基因突变一般都是有利的C．自然条件下，生物的突变率是很低的D．基因突变可产生新的基因，是生物变异的根本来源18．已知某物种的一条染色体上依次排列着A、B、C、D、E五个基因，下面列出的若干种变化中，未发生染色体结构变化的是( )A B C A B C D E F A B C E F A b c d e A B C D E 已知染色体状况：A B C D19. 血友病A 的遗传属于伴性遗传。
某男孩为血友病A 患者，但他的父母都不是患者。
则该男孩血友病A 基因来自（ ）A. 母亲 B ．父亲 C ．父亲和母亲 D ．不能确定20．抗维生素D 佝偻病是由位于X 染色体的显性致病基因决定的一种遗传病，这种疾病的遗传特点之一是( )A ．男患者与女患者结婚，其女儿正常B ．男患者与正常女子结婚，其子女均正常C ．女患者与正常男子结婚，儿子正常女儿患病D ．患者的正常子女不携带该患者传递的致病基因21. 单倍体育种与常规的杂交育种相比，主要优点是（ ）A ．获得纯种显性后代 B.缩短育种年限 C.无需对植物进行栽培 D.产量明显提高22. 用基因型为AaBb 水稻植株的花药培养出来的单倍体植株，经染色体加倍，可培育出纯合体植株的种数是（ ）A.2种B.4种C.6种 D ．8种23．下列关于育种优点的叙述，不正确的是（ ）A ．多倍体较二倍体茎杆粗大，果实种子大B ．杂交育种能产生新基因C ．人工诱变育种能提高变异频率 D．利用单倍体育种能明显缩短育种年限24．某二倍体生物正常体细胞的染色体数目为8条，下图表示含有一个染色体组的细胞是( )A B C D25．秋水仙素诱导多倍体形成的原因是( )A ．诱导染色体多次复制B ．抑制细胞分裂时纺锤体的形成C ．促使染色单体分开，形成染色体D ．促进细胞进行有丝分裂 26．下列高科技成果中，根据基因重组原理进行的是 （ ）①我国科学家袁隆平利用杂交技术培育出超级水稻②我国科学家将苏云金芽孢杆菌的某些基因移植到棉花体内，培育出抗虫棉③我国科学家通过返回式卫星搭载种子培育太空椒④我国科学家通过体细胞克隆技术培养出克隆牛A ．①B ．①②C ．①②D ．③④27．在遗传工程技术中，限制性内切酶主要用于 （ ）A ．目的基因的提取和导入B ．目的基因的导入和检测C ．目的基因与运载体结合和导入D ．目的基因的提取和与运载体结合。
28．下列四条DNA分子，彼此间具有粘性末端的一组是（）A．①②B．②③C．③④D．②④29．DNA连接酶的主要功能是（）A．DNA复制时母链与子链之间形成的氢键B．粘性末端碱基之间形成的氢键C．将两条DNA末端之间的缝隙连接起来D．将碱基、脱氧核糖、磷酸之间的键连接起来30．要使目的基因与对应的载体重组，所需的两种酶是()①限制酶②DNA连接酶③解旋酶④还原酶A．①②B．③④C．①④D．②③31．质粒是基因工程最常用的运载体，下列有关质粒的说法错误的是（）A．质粒不仅存在于细菌中，某些病毒也具有B．根瘤菌、圆褐固氮菌的固氮基因存在于质粒上C．质粒为小型环状DNA分子，存在于核(区)外的细胞质基质中D．质粒能够在宿主细胞中稳定保存，并在宿主细胞内复制32．下表关于基因工程中有关基因操作的名词及对应的内容，正确的组合是（）班级姓名33．昆虫的保护色越来越逼真，昆虫天敌的视觉越来越发达，结果双方都没有明显的优势，这说明了（）A．双方在斗争中不分胜负B．双方相互选择共同进化C．生存斗争决定了生物进化的方向D．生物有利变异的结果34. 现代生物进化理论认为，生物进化的基本单位是（）A．物种B．种群 C ．群落D．生态系统35．对生物进化的方向起决定作用的是（）A．基因重组B．基因突变C．染色体变异D．自然选择36. 生物多样性主要包括的层次内容有：（）①物种多样性②种群多样性③生态系统多样性④基因多样性Ａ．①②③Ｂ．①②④Ｃ．①③④Ｄ．②③④37. 某植物种群AA基因型个体占30%，aa基因型个体占20%，该种群的A和a基因频率分别是：（D ）A．30%、20% B．45%、55% C．50%、50% D．55%、45%38．种群是指生活在同一地点的同种生物的一群个体。
种群中的个体通过繁殖将各自的基因传递给后代。
下列叙述不正确的有()A．自然选择使种群基因频率发生定向改变B．种群基因频率的改变导致生物进化C．种群通过个体的进化而进化D．种群通过地理隔离可能达到生殖隔离二、非选择题39．下图1表示细胞分裂的不同时期与每条染色体DNA含量变化的关系；图2表示处于细胞分裂不同时期的细胞图像。
请回答：（1）处于图1中AB段形成的原因是_____________________，该过程发生于细胞分裂的_______期；（2）图2中______________处于图1中的BC段，图2中______________处于DE段（3）图2中甲细胞含有_______个染色体组，乙细胞中的DNA分子数为___________，该细胞处于_________分裂的________期，产生的子细胞是_____________________。
40．下图为蛋白质合成过程示意图，请据图回答下列问题：(1)图中2表示，3表示，4表示。
(2)在蛋白质合成过程中，在细胞核中进行的过程是，其模板是，产物是；在细胞质中进行的过程是，合成的直接产物的名称是。
(3)蛋白质中氨基酸的排列顺序，最终决定于的碱基排列顺序。
41．分析下列图表，回答有关问题：（1）图中B是___________________，F是_____________________。
（2）1个A与C的比例关系有两种，分别是：_____________和_____________。
（3）从分子水平看，D与C的关系是______________________________________。
（4）C的基本组成单位是图中的_________，D的主要载体是图中的。
（5）生物的性状遗传主要通过A上的C传递给子代，实际上是通过_______的排列顺序来传递信息。
42．现有两个小麦品种，一个纯种小麦性状是高杆(D)，抗锈病(T)；另一个纯种小麦的性状是矮杆(D，易染锈病(t)。
两对基因独立遗传。
育种专家提出了如右图所示的Ⅰ、Ⅱ两种育种方法以获得小麦新品种。
请分析回答问题：（1）要缩短育种年限，应选择的方法是___ ____，依据的变异原理是______ ________。
（2）图中①和④基因型分别为_______________和_____________。
（3）(二)过程中，D和d的分离发生在______________________；（三）过程采用的方法称为_________________；（四）过程最常用的化学药剂是________________。
（4）(五)过程产生的抗倒伏抗锈病植株中的纯合体占_________。
（5）如将方法Ⅰ中获得的③⑤植株杂交，再让所得到的后代自交，则后代的基因型比例为。
43．水稻是重要的粮食作物之一。
已知高秆(D)对矮秆(d)是显性，抗病(R)对易感病(r)是显性，控制上述两对性状的基因分别位于两对同源染色体上。