七年级下册第三周周末作业
七年级数学下学期第3周周末作业平行班试题(共5页)

一.选择题:〔每一小题3分,一共30分〕
的结果是〔〕
A.6B. C. D9
的结果是〔〕
的结果是〔〕
A. B. C. D.4.算式: Nhomakorabea值是〔〕
A. B. C.1D.
5.以下运算中正确的选项是〔〕
A. B. C. D.
6.生物学家发现了一种病毒,它的长度为0.000 00432 mm.数据0.000 004 32用科学记数法表示为〔〕
12.计算: , 。
13. , ,那么 ,
14.计算:
15.计算:
16.假设 ,那么k等于____________.
三、解答题:
17.计算题:〔每一小题2分,一共24分〕
18.〔6分〕: ,求 的值.
19.〔6分〕求阴影(yīnyǐng)局部面积。
20.〔10分〕先化简,再求值:
〔1〕 ,其中(qízhōng) .
〔2〕 其中 。
附加题:〔20分〕
21. , ,那么 〔 〕
A. B. C. D.52
22.以下能运用平方差公式计算的是〔〕
A、 B、
C、 D、
23. ,那么n=_________.
24.先化简,再求值: ,其中 .
25.对于(duìyú)任意的自然数n,代数式 的值是否是6的倍数?为什么?
内容总结
A. B. C. D.
7.计算 的结果正确的选项是〔〕
A、 B、 C、 D、
8.以下运算中,结果正确的选项是〔〕
A. B. C. D.
的结果是〔〕
A. B. C. 0 D.
其结果(jiēguǒ)为〔〕
A、 B、 C、 D、
仪征市第三中学2011-学年七年级下第三周周末作业

第三周班级 姓名学号、选择题:1 若/ a +/B =90° , Z 3 +/丫 =90°,则/ a 与/ Y 的关系是( )A.互余 B .互补 C .相等2、 体育课上,老师测量某个同学的跳远成绩的依据是 A.平行线间的距离相等 B .两点之间线段最短 C .垂线段最短3、 下列说法正确的个数是()①过直线上或直线外一点,都能且只能画这条直线的一条垂线;②过直线 都能画这条直线I 的垂直;③从直线外一点作这条直线的垂线段,叫做这个点到这条直线的距离;④过直 线外一点画这条直线的垂线,垂线的长度叫做这点到这条直线的距离4、如果一个角的两边分别平行于另一个角的两边,那么这两个角( )A.相等 B .互补 C.相等或互补 D .无法确定A.若/ 4=75°,贝U AB// CD B. 若/ 4=105°,则 AB// CD C.若/ 2=75°,贝U AB// CDD.若/ 2=155°,则 AB// CD6、对于平移后,对应点所连的线段,下列说法正确的是①对应点所连的线段一定平行,但不一定相等;②对应点所连的线段一定相等,但不一定平行,有可能相 交;③对应点所连的线段平行且相等,也有可能在同一条直线上;④有可能所有对应 点的连线都在同一条直线上。
A.①③B. ②③C. ③④D. ①②7、如图所示,如果 AB// CD 则/ 1、/ 2、/ 3之间的关系为()A.Z 1 + / 2+/ 3=360°B. . / 1- / 2+/ 3=180° 5、 如图所示,两 条直线AB CD 被第三条直线EF 所截,/仁75 F 列说法正确的是(D .没有关系( )D .两点确定一条直线l 上一点A 和直线l 外一点B 直C./ 1 + / 2- / 3-180 ° D . / 1 + / 2- / 3=180°8、在以下现象中,属于平移的是()①在挡秋千的小朋友;②打气筒打气时,活塞的运动③钟摆的摆动;④传送带上,瓶装饮料的移动A.①②B.①③C.②③D.②④A.1 cm、2 cm、3 cmB.1 cm 、4 cm、2 cmC.2 cm 、3 cm、4 cmD.6 cm、2 cm、3 cm10、三角形的三条高相交于一点,此一点定在()A.三角形的内部B.三角形的外部C.三角形的一条边上D. 不能确定11、如图,AD丄BC, AD丄BC, GC丄BC, CF丄AB,D,C, F是垂足,下列说法中错误的是()A.A ABC中,AD是BC边上的高B .△ ABC中,GC是BC边上的高D.A GBC中,GC 是BC边上的高 D . △ GBC中,CF 是BG边12、已知三角形的三边分别为2, a、4,那么a的范围是()A. 1 v a v 5B. 2v av 6C. 3v a v 7D. 4v av 6、填空题:13、如图,一条公路两次拐弯后和原来的方向相同,即拐弯前、?后的两条路平行,若第一次拐角是150° ,则第二次拐角为_______ 。
广东省佛山市顺德区七年级数学下学期第3周周末作业(平行班,无答案) 新人教版

江义中学七年级数学下学期周末作业(第3周)一.选择题:(每题3分,共30分)1.计算23-的结果是( )A. 6B. 6-C. 9- D 92.计算26)()(x x -÷-的结果是( )3.x A - 3.x B4.x C - 4.x D3.计算32)2b a -(的结果是( ) A.366b a - B. 368b a - C. 368b a D.328b a -4.算式:031)(-的值是( ) A. 31- B. 31 C. 1 D. 1- 5.下列运算中正确的是( ) A.222a a a =+ B.22)a a -=-( C. 532x x x =⋅ D.6326)2a a =( 6.生物学家发现了一种病毒,它的长度为0.000 004 32 mm.数据0.000 004 32 用科学记数法表示为( )A.510432.0-⨯B. 61032.4-⨯C. 71032.4-⨯D.7102.43-⨯7.计算)2(52ab a a -⋅-的结果正确的是( )A 、b a a 23510+-B 、ab a 5103--C 、b a a 23510--D 、b a a 22510+-8.下列运算中,结果正确的是( )A .236a a a =÷B .332222b a b a ab =⋅C .824)(ab ab =D .222)(b a b a -=-9.化简5225))((a a -+-的结果是( ) A.72a - B. 102a - C. 0 D.102a10.计算)3)(2(-+x x 其结果为( )A 、62-xB 、62-+x xC 、62--x xD 、62+-x x二、填空题:(每题4分,共24分)11. 科学记数法表示: ①1320000=___________; ②-0.000053=__________; ③2.5微米=__________米; ④______________1006.24=⨯-(写成小数形式)。
七年级第3周周末作业

七年级第3周周末作业班级姓名家长签名一.选择题(共8小题)1.如图1,直线AB、CD相交于点O,OE平分∠BOD,若∠AOE=140°,则∠AOC=()A.50°B.60°C.70°D.80°2.如图2所示,点E在AC的延长线上,下列条件中能判断AB∥CD的是()A.∠3=∠AB.∠1=∠2C.∠D=∠DCED.∠D+∠ACD=180°3.如图3,直线a,b被直线c所截,下列条件不能判定直线a与b平行的是()A.∠1=∠3 B.∠2+∠4=180°C.∠1=∠4 D.∠3=∠4图1 图2 图34.下列四个图形中,不能推出∠2与∠1相等的是()A.B.C.D.5.在同一平面内,已知直线a、b、c相互平行,直线a与b的距离是4cm,直线b与c 的距离是6cm,那么直线a与c的距离是()A. 2cmB. 5cmC. 2cm或5cmD. 2cm或10cm6.下面给出五个命题:①若x=﹣1,则x3=﹣1;②角平分线上的点到角的两边距离相等;③相等的角是对顶角;④若x2=4,则x=2;⑤面积相等的两个三角形全等,是真命题的个数有()A.4个B.3个C.2个D.1个7.如图图形中,把△ABC平移后能得到△DEF的是()A. B. C. D.8.如图,若∠A+∠ABC=180°,则下列结论正确的是()A.∠1=∠2B.∠2=∠3C.∠1=∠3D.∠2=∠4二.解答题(共4小题)9.如图,已知:AD⊥BC于D,EG⊥BC于G,∠E=∠1.求证:AD平分∠BAC.下面是部分推理过程,请你将其补充完整:∵AD⊥BC于D,EG⊥BC于G (已知)∴∠ADC=∠EGC=90°∴AD∥EG().∴∠1=∠2().=∠3(两直线平行,同位角相等)又∵∠E=∠1(已知)∴∠2=∠3().∴AD平分∠BAC ().10.如图,点E在DF上,点B在AC上,∠1=∠2,∠C=∠D.试说明:AC∥DF.将过程补充完整.解:∵∠1=∠2()∠1=∠3()∴∠2=∠3()∴∥()∴∠C=∠ABD ()又∵∠C=∠D()∴∠D=∠ABD()∴AC∥DF()11.如图,如果AB∥CD,AF平分∠BAD交CD于E,交BC的延长线于F,∠3=∠F.那么AD∥BC吗?请补全证明过程,即在横线处填上结论或理由.解:AD∥BC.理由如下:∵AB∥CD,(已知)∴∠2=∠3,()∵∠3=∠F,()∴∠F=.(等量代换)∵AF平分∠BAD,(已知)∴∠1=∠2,()∵∠F=(等量代换)∴∥()2018年03月16日158****7267的初中数学组卷参考答案一.选择题(共8小题)1.D;2.B;3.D;4.B;5.D;6.C;7.A;8.D;二.解答题(共4小题)9.同位角相等,两直线平行;两直线平行,内错角相等;∠E;等量代换;角平分线的定义;10.已知;已知;等量代换;内错角相等,两直线平行;两直线平行,同位角相等;11.已知;对顶角相等;等量代换;BD;CE;同位角相等,两直线平行;两直线平行,同位角相等;已知;等量代换;内错角相等,两直线平行;12.两直线平行,同位角相等;已知;∠2;角平分线的定义;∠1;AD;BC;内错角相等,两直线平行;。
七年级英语下学期第3周周末作业试题

文汇中学2021-2021学年七年级英语下学期第3周周末作业I. 根据句意及汉语提示,填写上单词。
〔5分〕1It’s said that people in ________(法国) are very romantic.2. The national ________(国旗) of China is red with five stars.3. I like to live on the ________(海岸) because I want to see the sea at any time.4. Please ________(完成) the work before ten o’clock.5. You need to take a ________(电梯) if you want to get to the top.II.词汇:根据汉语或者首字母提示写单词,补全句子。
〔每一小题0.5分,一共5分〕1. It is the national f__ of France, and you can see three colors - blue, white and red.2. Do you know how to speak "Hello" in F___________.3. We can use grapes to make w___________. Have you ever tried it?4. How nice it is to have a trip on this beautiful c___________ in summer!5. Jack is s___________ on the ice with his brother.6. It is____ (可能的) for me to walk from home to school because it is not far.7. Germany is a (n) ___________ (欧洲的) country.8. Guangdong ___________ (位于) in the south of China.9. He got full marks, because he gave a (n) ___________ (完美的) speech.10. There are fifteen___________ (台阶) before you reach the meeting room. III.单项选择。
七年级数学下学期第3周周末作业试题

江义中学七年级数学下学期周末作业(第3周)培优一、选择题〔每一小题3分,一共30分〕1、)3)(2(+-x x 的运算的结果是〔 〕A.62-xB. 62+xC. 652--x xD. 362-+x x2、以下的计算正确的选项是〔 〕A.1)1(2-=-a a aB. 8)4)(2(2-=+-x x xC. 4)2(22+=+x xD. 4)2)(2(2-=+-x x x3、以下算式能用平方差公式计算的是〔 〕A.〔2a +b 〕〔2b -a 〕B.)121)(121(--+x xC.〔3x -y 〕〔-3x +y 〕D.〔-m -n 〕〔-m +n 〕4、2)2(b a +的计算结果是〔 〕A.224b a +B. 222ba + C.2244b ab a ++ D. b a 42+ 5、以下各式运算结果是x 2-25y 2的是〔 〕.A .〔x +5y 〕〔x +5y 〕B .〔x -y 〕〔x +25y 〕C .〔-x -5y 〕〔-x +5y 〕D .〔x -5y 〕〔5y -x 〕6、算式:08-的值是〔 〕A 、81-B 、1C 、1-D 、81 7、小数000314.0用科学计数法可表示为〔 〕A.41014.3-⨯B. 51014.3-⨯C. 61014.3-⨯D. 71014.3-⨯8、假设q px x x x ++=-+2)5)(2(,那么p 、q 的值是( )A. p=-3,q=-10B. p=-3 ,q=10C. p=7 ,q=-10D. p=7 ,q=109、假设5=+y x ,3=-y x ,那么22y x -的值是〔 〕A. 8B. 15C. 2D. 410、假如229y axy x +-是一个完全平方式,那么a=〔 〕A 、6B 、2-C 、6或者 6-D 、18或者 18-二、填空题〔每一小题3分,一共18分〕11、计算以下各数的值:12-=_______;2)32(--=_______;0)3(-π=____。
七年级英语 第三周双休作业

七年级英语双休作业班级姓名I.用所给动词的适当形式填空。
1.Jim and Li Lei (watch)the football match this evening.2._____she (have)a Chinese lesson tomorrow?3.—What _______you (do)tomorrow morning?—I (see)my grandparents.4.________they (go)fishing this Friday afternoon?5.There (be)a birthday party this evening.6.John and I (ride) bikes this weekend.7. I (play) football with my friends tomorrow afternoon.8.I’m looking forward to (lie) on the beach.9.The hotel manager (leave) for Shanghai tomorrow morning.10. There (be) an American film next week.11. Next week we (have)an English party.12.I (stay) at home alone this weekend.13.We (go) sightseeing and (have) a picnic on the beach next day.14.We (meet) other fans and make some new friends this Saturday afternoon.15.Lucy, would you like (eat) another orange?16.We (leave) for the factory at six tomorrow morning.Don’t( be) late!17.Mother’s Day is the(two) Sunday in May.18.They are looking forward to (visit) Disneyland.19.I usually (watch) TV and (catch) insects (昆虫) at weekends.II.按要求改写下列各句。
七年级数学下学期第3周周末作业试题试题

4040HFE DC BA七年级数学第三周周末作业单位:乙州丁厂七市润芝学校 时间:2022年4月12日 创编者:阳芡明班级____姓名______一.填空题1、如图,60B ∠=︒,当1∠= ︒时,DE ∥BC ,理由是 。
2、如图,假如65B ∠=︒,AD ∥BC ,AB ∥DC , 那么 A ∠= ︒; D ∠= ︒;B ∠=∠ 。
3、:a ∥b ,3137∠=︒,那么1∠= ︒,2∠= ︒。
4、长度为2cm 、3cm 、4cm 和5cm 的4根木棒,从中任取3根,可搭成 种不同的三角形。
5、ABC ∆的高为AD ,角平分线为AE ,中线为AF ,那么把ABC ∆面积分成相等的两局部的线段是 。
6、如图,x = , y = 。
7、△ABC 中的周长为12,c+a=2b,c-a=2,那么a: b:c=___.8、一个多边形的内角和是540︒,那么这个多边形是 边形。
9、一个多边形的内角和是外角和的4倍,那么这个多边形是 边形。
10、如图,将字母“V 〞 向右平移 格会得到字母“W 〞。
11、将矩形ABCD 沿折线EF 折叠后点B 恰好落在CD 边上的点H 处,且∠CHE =40 º,那么∠EFB =___________.CB Ax +10()︒x +70()︒y ︒x ︒BCD A 1A E D BC(A )DCBA(B )DCBA(C )D CBA(D )DCB ADCB A ∠︒12、△ABC 中,∠A=31∠B=51∠C ,那么最大角 的度数为 ,此三角形为 三角形。
13、如图,小明在操场上从A 点出发,沿直线前进10米后向左转40o,再沿直线前进10米后, 又向左转40o,……,照这样走下去,他第一次回到出发地A 点时,一一共走了 ________米. 二.选择题1、点P 为直线l 外一点,点A 、B 、C 为l 上三点,5PA cm =,6PB cm =,6PC cm =,那么点P 到直线l 的间隔 是〔 〕.A 、5cm B 、小于5cm C 、不大于5cmD 、7cm2、OA OB ⊥,O 为垂足,且AOC ∠∶1AOB ∠=∶2,那么BOC ∠是〔 〕.A 、45︒B 、135︒C 、45︒或者135︒D 、60︒或者20︒3、如图, AB ∥CD ∥EF ,BC ∥AD , AC 平分BAD ∠且与EF 交于点O ,那么与AOE ∠相等的角有〔 〕个.A 、5B 、4C 、3D 、24、如图,34∠=∠,那么以下条件中不能推出AB ∥CD 的是〔 〕.A 、1∠与2∠互余B 、12∠=∠C 、13∠=∠且24∠=∠D 、BM ∥CN5、在以下各图的△ABC 中,正确画出AC 边上的高的图形是 〔 〕6、如图,AB ∥CD ,且∠ACB =90°,那么与∠CAB 互余的角有〔 〕个ABDCO FEBAM CDN43 2 1(A) 1个 (B) 2个 (C) 3个 (D) 4三.解答题1、如图,AD 是EAC ∠的平分线,AD ∥BC ,64B ∠=︒,你能算出EAD ∠,DAC ∠,C ∠的度数吗?2、如图,65A ∠=︒,30ABD ∠=︒,72ACB ∠=︒,且CE 平分ACB ∠,求BEC ∠ 的度数。
- 1、下载文档前请自行甄别文档内容的完整性,平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益,请联系客服反馈,我们会尽快为您处理(人工客服工作时间:9:00-18:30)。
Weekly Test of Unit3一、单项选择。
(20分)( ) 1.---Why do you like pandas?---______they are cute.A.ButB.BecauseC.AndD.So( )2._______doesn’t have a tail(尾巴), it isn’t a bear. It’s from Australia.A.An elephantB.A giraffeC.A koalaD.A panda ( )3.Dolphins are very _______.We all like them very much.A.dangerousB.scaryC.smartzy( )4.______ a koala ________ during the day?A.Does; sleepB.Is; sleepingC.Do; sleepD.Is; sleep ( )5.Pandas eat________.They’re only from Sichuan, China.A.meatB.treesC.riceD.bamboo ( )6.let’s __________ the pandas.A.seeB. watchC. lookD.read( )7.The little baby sleeps with her mother______night.A.onB.inC.fromD.at( )8.Li Lei always_______ to the zoo to see animals with his classmates.A.goB.will goC.goesD.is going ( )9.---Where_______lions from? ---They _______from Africa.A.do;areB.are;areC.do;comeD.are;comes ( )10.---______animals do you like? ---I like penguins. They are cute.A.WhichB.WhatC.WhoD.Whose ( )11. There is _____elephant in the zoo. _____elephant is from Africa.A./;AnB.an;TheC.a;TheD.an;/ ( )12.Mr Li is kind _____us,but sometimes he is kind _____ strict.A.to;ofB.with;toC.of;toD.of;of ( )13.My sister is very ________. She has few words.A.tallB.quietC.interestingzy()14.My brother enjoys _________basketball every day.A. playB. playingC. to playD. playing the( )15.The dolphin can ______a ball.A.playB.play atC.play withD.play to ( )16.The foreign friends will arrive _____ Shanghai_________.A. at; in May 2nd ,2010B. to, on May 2nd ,2010C.in, on May 2nd ,2010D. at, in 2010, May 2nd( )17.What ____ subjects does he like?A.othersB. anotherC. otherD. the other ( )18.Many animals are very friendly ______ people.A. andB. toC. atD. for( )19.There are three ______ bears in the zoo.A.kinds ofB.kind ofC.a kind ofD.kinds ( )20.________ he is very lazy,_______ he sleeps during the day.A.Because; soB.Because; /C.So; becauseD.So; /二、完形填空。
(10分)Do you know pigeons(鸽子)?They are__1__ birds. They are in __2__ and grey. Some people think they are not __3___ but they are cute and __4__. So many people keep them as pets. __5__ do people say pigeons are intelligent(聪明的)? Because pigeons can __6__ letters from one place _7__ another. And they know the __8__home. We often __9__ the pictures of pigeons with olive(橄榄枝)in __10___ mouths. We call them peace pigeons. They are the symbol of peace(和平的象征)( )1.A. a kind of B.a kinds of C. many kinds of D.a kind( )2.A.black B. white C. red D.green( )3.A.terrible zy C. beautiful D.scary( )4.A.big B. small C. intelligent D.young( )5.A.What B.Why C.Where D.How( )6.A. take B. give C.have D.let( )7.A. to B.for C.on D.with( )8.A.way B.avenue C. highway D.street( )9.A. look B. watch C.look at D.see( )10.A.its B.they’re C.their D.them三、阅读理解(20分)AOne morning a fox sees a cock. He thinks this is my breakfast. He comes up to the cock and says, “I know your can sing very well. Can you sing for me?”The cock is happy. He closes his eyes and begins to sing. The fox sees that and catches him in his mouth and carries him away.The people in the field see the fox. They cry “Look! Look! The fox is carrying a cock away.”The cock says to the fox, “Mr Fox, do you understand? The people say you are carrying their cock away. Tell them it is yours not theirs.”The fox opens his mouth and says, “The cock is mine, not yours.” Just then the cock runs away from the fox and flies into a tree.( )1.The fox is _______.A. hungryB. fullC. hurryD. happy( )2.The fox likes ____ the cock.A. to talk toB.to knowC.to hear the cock singingD.to eat( )3.Which sentence is wrong?A.The fox knows the cock.B.The cock closes his eyes and begins to sing.C.The fox catches the cock in his mouth.D. The fox carries the cock away.( )4.The fox tells the people in the field the cock is____________________.A.theirB.theirsC.hisD. yours( )5.We can think ____ is smart.A. the foxB.the cockC. the peopleD. The farmerBMr Li works in a big factory. His wife works in the same factory. Mr Li is nearsighted(近视眼). But he doesn’t like wearing glasses when he has his meals.Mr Li has a son. His name is Li Cheng. He is in Class One, Grade Two of No.3 Middle School. He likes talking very much. He often talks about his school and his friends at the table. Mr Li is angry. “Don’t talk when you have meals,” Mr Li says to Li Cheng ,“Be a good boy.”One day , when they are having supper, Li Cheng sees a fly(苍蝇)in his father’s bowl. He wants to tell his father about it. “Dad, there is …”His father looks at him and says, “Stop talking! ” after supper his father asks him, “Well, my boy, what’s it?”“There is a fly in your bowl. And you have eaten(吃完)it now.”“Why didn’t you tell me earlier? ”Says his father angrily. ( )6.Mrs Li works in a ______.A.farmB.schoolC.factoryD. bus company( )7.Mr Li often wears ____________.A.a hatB.blue trousersC. black coatD.glasses( )8.Li Cheng is a _______.A.student B teacher C. policeman D.soldier( )9.Mr Li doesn’t want Li Cheng ______ when he has meals.A.to talkB.to speakC. to makeD.to have( )10.Mr Li eats _____.A.a mouseB. a flyC.a catD.a dog四、看图填词。