八年级下册一二单元测试
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道德与法治八年级下册第一单元测试题一、单项选择题(选出一个最符合题意的正确答案,每题1分,共20分)1. 我国经济制度的基础是()A.生产资料公有制B.非公有制经济C.私有制D.混合所所有制经济12月4日是国家宪法日,主题是“学宪法、讲宪法”。
全国各地通过各种形式开展了宪法宣传教育活动。
回答2~5题。
2.关于宪法下列说法错误的是( )A.宪法具有最高的法律地位和法律效力B.宪法是普通法律的总和C.宪法是实行依法治国的根本依据D.宪法是国家的根本大法3.某班围绕“我与宪法”召开了主题班会。
下面是同学们的发言,你认为正确的是( )①宪法赋予我权利,行使权利应遵规②宪法规定我义务,履行义务是天职③宪法意识我树立,违宪行为必刑罚④宪法尊严我维护,践踏宪法敢斗争A.①②③ B.①③④ C.②③④ D.①②④4.全国各地组织开展宪法宣传教育活动( )①有利于推进依法治国进程,维护社会稳定②使广大人民群众增强宪法观念③为经济社会发展营造良好的法治环境④是加强文化建设的需要A.①③④B.①②③C.②③④ D.①②③④5.河北省十二届人大四次会议新当选的国家工作人员向宪法宣誓。
举行向宪法宣誓仪式( )①彰显宪法权威②增强国家工作人员的宪法意识③是履行宪法使命的承诺④体现了广大群众宪法意识增强A.①②③④ B.①③④ C.②③④ D.①②③6. 一切权力属于人的的宪法原则,归根结底就是要 ( )A.保证人民当家作主的权利B.实现共同富裕C.解放和发展生产力D.保证宪法的实施7. 现代法治国家立法活动的基本要求是()A.尊重和保障人权B.维护统治阶级的利益C.建设社会主义法治国家D.保证人民行使自由权利8. 中国人权事业进步的最显著标志是 ()A.建立科学完备的法律体系B.坚持党的领导C.建设社会主义法治国家D.中国的减贫行动9. 泰兴人民行使国家权力的机关是( )A.泰兴市人民政府B.泰兴市人民法院C.泰兴市人民代表大会D.泰兴市人民检察院10. 下列关于权力的说法正确的是( )①权力是一把双刃剑②权力可以造福于民③如果权力被滥用,就会滋生腐败④要把权力关进制度的笼子里A.②③④B.①③④C.①②④D.①②③④“如果有一天,你无力抵御沉沦,沦为鹰犬,逆行在法治的道路上,母校将会喊你回家——去‘抄宪法’。
湘教版数学八年级下册第一单元测试题(时间:120分钟 分值:120分)一、选择题(每小题3分,共30分)1.下列长度的三条线段能组成直角三角形的是( )A .4,5,6B .2,3,4C .1,1,2D .1,2,22.若三角形三个内角的比为1∶2∶3,则它的最长边与最短边的比为( ) A .3∶1 B .2∶1 C .3∶2 D .4∶1 3) A .3 B .4 C .5 D .无法求出第3题图第4题图4 ) A.833mB 5PQ A.3B .2 C .3 D .2 3第5题图第6题图6.,E ,AE =A .1 7.如图,在△ABC 中,∠ACB =90°,AC =12,BC =5,AM =AC ,BN =BC ,则MN 的长为( )A .2B .2.6C .3D .48.如图,AB ∥CD ,BP 和CP 分别平分∠ABC 和∠DCB ,AD 过点P ,且与AB 垂直.若AD =8,则点P 到BC 的距离是( ) A .8 B .6 C .4 D .2第7题图第8题图第10题图9.设a,b是直角三角形的两条直角边,若该三角形的周长为6,斜边长为2.5,则ab的值是()A.1.5 B.2 C.2.5 D.310.如图,∠ABC=90°,AB=6,BC=8,AD=CD=7,若点P到AC的距离为5,则点P 在四边形A.0个B11.在Rt12.已知,.13________________.第13题图第14题图14线AB15.AB=80.1米,参考数据:2≈1.41,3≈1.73).第15题图第16题图1617.如图,在等腰△ABC中,AB=AC,BC边上的高AD=6cm,腰AB上的高CE=8cm,则△ABC的周长等于________cm.第17题图第18题图18.如图,AB=6,点O是AB的中点,直线l经过点O,∠1=120°,点P是直线l上一点,当△APB为直角三角形时,AP=____________.三、解答题(共66分)19.(6分)如图,在Rt△ABC中,∠ACB=90°,CD是AB边上的中线,将△ADC沿AC边所在的直线折叠,使点D落在点E处,得到四边形ABCE.求证:EC∥AB.20.(8分)证明命题“角的平分线上的点到角的两边的距离相等”,要根据题意,画出图形,并用符号表示已知和求证,写出证明过程,下面是小明同学根据题意画出的图形,并写出了不完整的已知和求证.已知:如图,∠AOC=∠BOC,点P在OC上,______________________________________________________________________________________________.求证:________.请你补全已知和求证,并写出证明过程.21.(10分)如图,∠A=∠B=90°,E是AB上的一点,且AE=BC,∠1=∠2.(1)Rt△ADE与Rt△BEC全等吗?并说明理由;(2)△CDE是不是直角三角形?并说明理由.22.(10分)如图,在△ABC中,∠C=90°,AD是∠BAC的平分线,DE⊥AB于点E,点F 在AC上,BD=DF.求证:(1)CF=EB;(2)AB=AF+2EB.23.(10分)如图,一根长63的木棒(AB),斜靠在与地面(OM)垂直的墙(ON)上,与地面的倾斜角(∠ABO)为60°.当木棒A端沿墙下滑到点A′时,B端沿地面向右滑行至点B′.(1)求OB的长;(2)当AA′=1时,求BB′的长.24.(10分)如图所示,在Rt△ABC中,AB=CB,ED⊥CB,垂足为D点,且∠CED=60°,∠EAB=30°,AE=2,求CB的长.25.(12分)如图,南北方向PQ以东为我国领海,以西为公海,晚上10时28分,我国边防反偷渡巡逻101号艇在A处发现其正西方向的C处有一艘可疑船只正向我国领海靠近,便立即通知正在PQ上B处巡逻的103号艇注意其动向,经测量AC=10海里,AB=6海里,BC=8海里,若该船只的速度为12.8海里/时,则可疑船只最早何时进入我国领海?参考答案与解析1.C 2.B 3.A 4.B 5.C 6.A 7.D 8.C 9.D10.A 解析:过点D 作DE ⊥AC ,BF ⊥AC ,垂足分别为E ,F .在Rt △ABC 中,AC =AB 2+BC 2=10,BF =6×810=4.8<5;在△ACD 中,∵AD =CD ,∴AE =CE =5,DE =72-52=26<5,则点P 在四边形ABCD 边上的个数为0个.故选A. 14.2 15.2.916.3π2+1 解析:如图所示,∵无弹性的丝带从A 至C ,绕了1.5圈,∴展开后AB =1.5×2π3或33或37.19.证明:∵CD 是AB 边上的中线,且∠ACB =90°,∴CD =AD ,∴∠CAD =∠ACD .(3分)又∵△ACE 是由△ACD 沿AC 边所在的直线折叠而成,∴∠ECA =∠ACD ,∴∠ECA =∠CAD ,∴EC ∥AB .(6分)20.解:PD ⊥OA ,PE ⊥OB ,垂足分别为点D ,E (2分) PD =PE (4分) 证明如下:∵PD ⊥OA ,PE ⊥OB ,∴∠PDO =∠PEO =90°.在△PDO 和△PEO 中,⎩⎪⎨⎪⎧∠PDO =∠PEO ,∠AOC =∠BOC ,OP =OP ,∴△PDO ≌△PEO (AAS),∴PD =PE .(8分) 21.解:(1)全等.(1分)理由如下:∵∠1=∠2,∴DE =CE .∵∠A =∠B =90°,AE =BC ,∴Rt △ADE ≌Rt △BEC (HL).(5分)(2)△CDE 是直角三角形.(6分)理由如下:∵Rt △ADE ≌Rt △BEC ,∴∠AED =∠BCE .∵∠BCE +∠BEC =90°,∴∠BEC +∠AED =90°,∴∠DEC =90°,∴△CDE 是直角三角形.(10分)22.证明:(1)∵AD 是∠BAC 的平分线,DE ⊥AB ,DC ⊥AC ,∴DE =DC .(2分)在Rt △DCF和Rt △(2)在Rt 分)∴23)(2)在Rt ′=AB =分)24.解:过E 点作EF ⊥AB ,垂足为点F .∵∠EAB =30°,AE =2,∴EF =1,∴BD =1.(3分)又∵∠-30°=3,∴25且∠海里.只从被发现到进入我国领海的时间为6.4÷12.8=0.5(小时),(10分)∴可疑船只最早10时58分进入我国领海.(12分)湘教版数学八年级下册第二单元测试题(时间:120分钟分值:120分)一、选择题(每小题3分,共30分)1.如果一个多边形的内角和是720°,那么这个多边形是()A.四边形B.五边形C.六边形D.七边形2.在下列图形中,既是轴对称图形又是中心对称图形的是()3.下列命题是真命题的是()ABCD4.A.3.5 B.4 C.7 D.14第4题图第5题图第6题图5BC 的长为(A.6DCAC.7两位同学的作法分别如下:对于甲、乙两人的作法,可判断()A.甲正确,乙错误B.甲错误,乙正确C.甲、乙均正确D.甲、乙均错误8.在▱ABCD中,AB=3,BC=4,当▱ABCD的面积最大时,下列结论:①AC=5;②∠A+∠C=180°;③AC⊥BD;④AC=BD,其中正确的有()A.①②③B.①②④C.②③④D.①③④9.为增加绿化面积,某小区将原来正方形地砖更换为如图所示的正八边形植草砖,更换后,图中阴影部分为植草区域.设正八边形与其内部小正方形的边长都为a,则阴影部分的面积为()A.2a2 B.3a2 C.4a2 D.5a2第9题图第10题图10.,AE=CF=A.71112点C两地之间的距离是________米.第12题图第13题图13一个条件1415.如图,在▱ABCD中,BE平分∠ABC,BC=6,DE=2,则▱ABCD的周长等于________.第15题图第16题图16角∠A,使衣帽架拉伸或收缩.若菱形的边长等于10cm ,∠A=120°,则AB=________,AD=________.17.如图,在正方形ABCD中,AC为对角线,点E在AB边上,EF⊥AC于点F,连接EC,AF=3,△EFC的周长为12,则EC的长为________.第17题图第18题图18.如图,菱形ABCD中,点E,F分别是BC,CD的中点,过点E作EG⊥AD于点G,连接GF,EF.若∠A=80°,则∠DGF的度数为________.三、解答题(共66分)19.(8分)一个多边形内角和的度数比外角和的度数的4倍多180度,求这个多边形的边数.20.(8分)如图,在锐角三角形ABC中,AD⊥BC于点D,点E,F,G分别是AC,AB,BC的中点.求证:FG=DE.21.(12分)如图,在▱ABCD中,点E,F为对角线AC上的两点,且AE=CF,连接DE,BF.(1)写出图中所有的全等三角形;(2)求证:DE∥BF.22.(12分)如图,在▱ABCD中,E,F分别是边AD,BC上的点,且AE=CF,直线EF 分别交BA的延长线,DC的延长线于点G,H,交BD于点O.(1)求证:△ABE≌△CDF;(2)连接DG,若DG=BG,则四边形BEDF是什么特殊四边形?请说明理由.23.(12分)如图,将矩形ABCD折叠使A,C重合,折痕交BC于E,交AD于F,连接AE,CF,AC.(1)求证:四边形AECF为菱形;(2)若AB=4,BC=8,①求菱形AECF的边长;②求折痕EF的长.24.(14分)如图,在Rt△ABC中,∠ACB=90°,过点C的直线MN∥AB,D为AB边上一点,过点D作DE⊥BC,交直线MN于点E,垂足为点F,连接CD,BE.(1)求证:CE=AD;(2)当点D为AB的中点时,四边形BECD是什么特殊四边形?说明你的理由;(3)若点D为AB的中点,当∠A的大小满足什么条件时,四边形BECD是正方形?请说明你的理由.参考答案与解析1.C 2.C 3.D 4.A 5.C 6.D7.C8.B解析:根据平行四边形的面积公式及“垂线段最短”的性质可知,当其面积最大时,其一边上的高与邻边重合,即其形状为矩形.此时,AC=AB2+BC2=32+42=5,故①正确;∠A=∠C=90°,∴∠A+∠C=180°,故②正确;若AC⊥BD,则此矩形又为正方形,有AB=BC,显然不符合题意,故③错误;根据矩形的对角线相等的性质,可知AC =BD,故④正确,综上可知,①②④正确.故选B.9.A10.C解析:如图所示,由题意易证△ABE≌△CDF.∴∠ABE=∠CDF.∵∠AEB=∠,,=EF,n=)(2)证明:∵AE=CF,∴AF=CE.(8分)∵四边形ABCD是平行四边形,∴AB=CD,AB ∥CD,∴∠BAF=∠DCE.在△ABF和△CDE中,AB=CD,∠BAF=∠DCE,AF=CE,∴△ABF≌△CDE(SAS),∴∠AFB=∠CED,∴DE∥BF.(12分)22.(1)证明:∵四边形ABCD是平行四边形,∴AB=CD,∠BAE=∠DCF.(3分)又∵AE=CF,∴△ABE≌△CDF.(6分)(2)解:四边形BEDF是菱形.(7分)理由如下:∵四边形ABCD是平行四边形,∴AD =BC,AD∥BC.∵AE=CF,∴DE=BF,∴四边形BEDF是平行四边形,∴BO=DO.(9分)又∵BG=DG,∴GO⊥BD,∴四边形BEDF是菱形.(12分)23.(1)证明:∵矩形ABCD折叠使A,C重合,折痕为EF,∴OA=OC,EF⊥AC,EA=EC .∵AD ∥BC ,∴∠F AC =∠ECA .(2分)在△AOF 和△COE 中,⎩⎪⎨⎪⎧∠F AO =∠ECO ,AO =CO ,∠AOF =∠COE ,∴△AOF≌△COE ,∴OF =OE .(4分)∴四边形AECF 为菱形.(6分)(2)解:①设菱形AECF 的边长为x ,则AE =CE =x ,BE =BC -CE =8-x .(7分)在Rt △ABE 中,∵BE 2+AB 2=AE 2,∴(8-x )2+42=x 2,解得x =5,即菱形的边长为5.(9分)②在Rt △ABC 中,AC =AB 2+BC 2=45,∴OA =12AC =2 5.在Rt △AOE 中,OE =AE 2-AO 2=5,∴EF =2OE =2 5.(12分) 24.(1)证明:∵DE ⊥BC ,∴∠DFB =90°.∵∠ACB =90°,∴∠ACB =∠DFB ,∴AC ∥DE .(2分)∵MN ∥AB ,∴四边形ADEC 是平行四边形,∴CE =AD .(4分)(2)解:四边形BECD 是菱形.(5分)理由如下:∵点D 为AB 的中点,∴AD =BD .∵CE =AD ,∴BD =CE .∵BD ∥CE ,∴四边形BECD 是平行四边形.(7分)∵∠ACB =90°,点D 为AB 的中点,∴CD =BD ,∴四边形BECD 是菱形.(9分)(3)解:当∠A =45°时,四边形BECD 是正方形.(10分)理由如下:∵∠ACB =90°,∠A =45°,∴∠ABC =∠A =45°,∴AC =BC .∵点D 为BA 的中点,∴CD ⊥AB ,∴∠CDB =90°.(12分)由(2)知四边形BECD 是菱形,∴四边形BECD 是正方形.即当∠A =45°时,四边形BECD 是正方形.(14分)。
八年级英语下册第一次月考试题一、根据句意和首字母提示完成句子(10分)1.The little girl is too young to look after___________.(她自己)2.I have to see a dentist because I have a _________(牙疼)3.We all know the__________(重要性) of studying English well.4.In Europe, people eat with forks and_________(刀).5.Let’s think about Aron before we have to make a ________.(决定).6.We made some friends on my long train____________(旅程).7.Miss Wang has some ______________(困难) in speaking Chinese well.8.We all like the girl because of his ________________(善良).9. I can’t _____________(想象) what the future life is like.10. Thank you for ____________(改变) my life.二、选择填空(15分)( ) 1.We were _________about the idea of _________a party.A excite, havingB exciting, havingC excited, havingD excited , have ( )2. They agreed _______ to a picnic on a sunny day.A. wentB.going C to go( )3. ______is very important for us to learn English well.A. ThatB. ThisC. ItD. All ( )4. Lucky is a special ________dog. It’s very clever.A. trainedB. trainingC. train D trains ( )5.The boy doesn’t go to school by bike. He goes to school on______.A. a footB. feetC. footD. foots ( )6. Oh, I have no money. I have run ______ itA. out ofB. outC. of D out off ( )7. _______students can answer this question, because it is very difficult. A. Little B. A little C. FewD. A few( )8. If you eat _______meat, you’ll be heavier.A. too muchB. much tooC. too manyD. so many ( )9. Mom, I volunteer ___________the plates tadayA. washedB. to washC. washingD. wash ( )10. _ Why did they set up this organization?-- __________ disabled people.A. HelpB. to helpC. Helping D Helped ( )11. He is ill. He should ______and rest. He shouldn’t ______out to play. A. lie down, go B. lies down, goes C. lies down, goD. lie down, goes ( )12 – He looks unhappy?-- Let’s ____________A. cheer him upB. helped out himC. look him afterD. angry with him( )13. Lisa cut her finger just now. She should put a_______ on it .A. medicineB.X-rayC. bandage( )14. – Could you do ____________for me, please? -- Yes, with pleasure.A. somethingB. anythingC. nothingD. everything( )15.Mary likes drinking milk______ honey every morning.A. andB. withC. inD. has三、完形填空(10分)A generous gap(代沟) has become a serious problem. I read a 1 about it in the newspaper. Some children have killed themselves after 2 with parents. I t hink this is because they don’t often have a talk with each other. Parents now 3 more time in the office, 4 they don’t have much time to stay with their children. As times passes, they both feel that they don’t have the __5 topic(题目) to talk about. I want to tell parents to be more with your 6 , get to know them and 7 them. And for children, show your 8 to your parents. They are the people who love you. So 9 them your thoughts. In this way, you 10 have a better understanding of each other.( ) 1.A. message B. call C. report D. letter( ) 2. A. talking B. arguing C. fighting D. playing( ) 3. A. spend B. stay C. work D. have( ) 4. A. because B. if C. but D. so( ) 5. A. interesting B. same C. true D. good( ) 6. A. business B. children C. work D. office( ) 7. A. get on well withB. look afte C. understand D. love( ) 8. A. interest B. secret C. trouble D. feelings( ) 9. A. tell B. ask C. answer D. say( ) 10. A. can B. should C. must D. would四、阅读理解(20分)AMary had some trouble in her head, so she went to see the doctor. He was a new doctor, and did not know her. So he first asked her some questions. One of the questions was, “What is your age?”“Well...” Mary answered, “I don't quite remember, doctor, but I will try to think.” She thought for a while and then said, “Yes, I remember now, doctor. When I married, I was twenty-two years old, and my husband was thirty then. Now he is sixty, I know, and that is twice thirty. And so I am twice twenty-two. That is forty-four, isn't it?”( ) 1. Mary went to see the doctor because _______.A. she had a headacheB. she had a feverC. she had caught a coldD. she couldn't think well( ) 2. At first the doctor _________.A. asked her some questionsB. examined her carefullyC. gave her some medicineD. asked her to have a rest( ) 3. Mary got married when_______.A. she was twenty years oldB. she was thirty years oldC. she was twenty-two years oldD. she was forty-four years old( ) 4. Mary ________.A. answered the doctor's questioned at onceB. answered the question after thinking for a whileC. just kept silentD. refused to tell her age( ) 5. Mary should be _______.A.forty-fourB. forty-fiveC. fiftyD. fifty-twoBExpert(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 their children studying late. They will think their children work very hard, but not all parents are happy about this. Once a mother told us tat every morning her 10-year-old boy put up one finger (手指)with his eyes still closed, begging(请求) for one more minute to sleep. Like thousands of students “early birds”in China, he has to get up before six every morning.A report shows that without a good night’s sleep, students seem to be weaker (虚弱)than they should be. Many students have fallen asleep during class at one time or another. Too much homework is not the only reason why students stay up late. Some watch TV or play the computer games late into the night.Experts have ever said that the students should develop good study habits. So some clever students never study last, they are able to work well in class.( ) 6. The 10-year-old boy begged for more minute to sleep because__________A. he didn’t have enough sleepB. it wasn’t time for him to get upC. he didn’t want to go to schoolD. he wanted his mother to wake him up( )7. In this passage we know if students don’t get enough sleep, they may________A. become too weak to sleepB. not work well in classC. go to bed earlyD. be weak in English( ) 8. In this passage “early birds”means “persons who ______________”A. get up earlyB. get up lateC. sleep lessD. don’t want to sleep( ) 9. “Stay up late”here means “_____________”A. study lateB. watch TV lateC. not go to bed until lateD. stay outside( ) 10. According to the passage, which of the following is right?_________A. If you want to study better, you must work hard at night.B. Sleeping less means working hard.C. Some clever students are able to work well in class because they have good study habits.D. Students don’t have enough sleep because they have lots of homework to do.五.用所给单词适当形式填空。
部编人教版八年级历史下册第一、二单元测试题(带答案)部编人教版八年级历史下册第一、二单元测试题(带答案)一、选择题(每小题3分,共60分)1.(2021・山东潍坊)在第一届中国人民政治协商会议上,毛泽东说:“诸位代表先生们,我们有一个共同的感觉,这就是我们的工作将写在人类的历史上。
”“我们的工作”包括( A )A.制定并通过《中国人民政治协商会议共同纲领》 B.颁布《土地改革法》C.制定“一五”计划 D.决定抗美援朝2.1949年10月1日,历经沧桑的中国人迎来了自己的节日。
这一天发生的重大事件是( B ) A.《中华民国临时约法》的颁布 B.中华人民共和国成立 C.西藏和平解放 D.《中华人民共和国宪法》的颁布3.1949年10月1日的开国大典,标志着中华人民共和国的成立,开辟了中国历史的新纪元,这个“新”主要是指( C ) A.国家的名称变了 B.国家独立富强了C.中国的社会性质变了 D.人民的生活改善了 4.1951年5月,《中央人民政府和西藏地方政府关于和平解放西藏办法的协议》在北京正式签字,这一协议的执行意味着( B )A.摧毁了封建土地制度 B.获得了祖国大陆的统一 C.完成了社会主义改造D.推翻了国民党的反动统治 5.中国人民志愿军被称为“最可爱的人”,是因为( B )①中国人民志愿军有着高度的爱国主义精神和革命英雄主义精神②志愿军战士在战斗中英勇顽强,不畏艰险,不怕牺牲③志愿军战士保卫了国家,也为国家和民族在国际上赢得了荣誉④中国人民志愿军有着伟大的国际主义精神 A.①②③ B.①②③④ C.②③④ D.①③④6.在进行主题为“中国人民志愿军――中国最可爱的人”的研究性学习时,可以作为史料运用的是( B )①当时的文献资料②历史博物馆内存放的有关实物资料③电影《上甘岭》④当时实况纪录片和照片A.①②③ B.①②④ C.①③④ D.②③④7.建国初期,捍卫了亚洲与世界和平、保卫了国家独立、提高了中国国际地位的事件是( B ) A.《中国人民政治协商会议共同纲领》的颁布 B.抗美援朝 C.西藏和平解放 D.土地改革8.新中国实行土地改革的根本原因是( A )A.封建土地制度严重阻碍了农村经济的发展 B.广大农民缺乏生产工具、资金C.引导农民走共同富裕的社会主义道路 D.结束半殖民地半封建社会 9.关于土地改革的完成,农民有深切体会,其中符合当时情景的是( A ) A.农民甲说:“我们总算翻了身,成为土地的主人。
Units 1~2单元测试卷得分________卷后分________评价________听力部分(20分)一、听句子,选择恰当的答语。
(5×1分=5分)(C)1.A.No, I can't. B.Yes, I will. C.Yes, you should.(A)2.A.No, I don't. B.I'm sorry. C.Thank you.(B)3.A.To the park. B.I have a fever. C.You should see a doctor.(C)4.A.Yes, please. B.Yes, I'd like some tea.C.Yes, I'd love to.(A)5.A.He takes after his father. B.He looks after his father. C.He likes his father most.二、听短对话,选择正确的图片回答问题。
(5×1分=5分)(A)6.What's the matter with the boy?A.B.C.(A)7.Where is the boy's grandmother?A.B.C.(C)8.How did the woman feel about the story?A.B.C.(A)9.What does Kate do to help the children?A.B.C.(B)10.What did the girl do after class last Friday?A.B.C.三、听长对话,选择正确的答案。
(5×1分=5分)听下面一段对话,回答第11、12小题。
(C)11.How did Kevin feel?A.Upset. B.Bored. C.Tired.(A)12.What did Jane advise Kevin to do?A.To go to bed early. B.To take some medicine.C.To go to the hospital.听下面一段对话,回答第13~15小题。
1 新人教版八年级英语下册1—2单元测试题一、根据句意和首字母提示完成句子(15分) 1. The The little little little girl girl girl is is is too too too young young young to to to look look look after___________.(after___________.(她自己) 2. I have to see a dentist because I have a _________(牙疼)(牙疼)3. W e all all know know know the__________(the__________(重要性) ) of of of studying studying studying English English well. 4. In Europe, people eat with forks and_________(刀). 5. Let’s think about Aron before we have to make a________.(决定). 6. We made some friends on my long train____________(旅程). 7. Miss Miss Wang Wang Wang has has has some some some ______________(______________(困难) ) in in in speaking speaking Chinese well. 8. e W e all all all like like like the the the girl girl girl because because because of of of his his his ________________(________________(善良). 9. I ca n ’t _____________(n’t _____________(想象) what the future life is like. 10. 10. W e W e saw saw saw a a a __________(__________(标志) ) which which which says says says “No “No “No parking”. parking”. parking”. So So we couldn’t park the car here.. 11. Thank you for ____________(改变) my life. 12. 12. I I I have have have many many many _____________(_____________(兴趣) ) like like like playing playing playing soccer soccer soccer and and so on. 13.I will finish the task in _________ (几个) days. 14. The old man lived __________ (独自) in the countryside, but he doesn't feel ____________ (寂寞的). 二、选择填空(15分) ( ) 1.We were _________about the idea of _________a party. A A excite, excite, excite, having having B B exciting, exciting, exciting, having having C C excited, excited, excited, having having D excited , have ( )2. They agreed _______ to a picnic on a sunny day. A. went B.going C to go ( )3. ______is very important for us to learn English well. A. That B. This C. It D. All ( )4. Lucky is a special ________d og. It’s very clever. A. trained B. training C. train D trains ( )5.The boy doesn’t go to school by bike. He goes to school on______. A. a foot B. feet C. foot D. foots ( )6. Oh, I have no money. I have run ______ it A. out of B. out C. of D out off ( )7. _______students can answer this question, because it is very difficult. A. Little B. A little C. Few D. A few ( )8. If you eat _______meat, you’ll be heavier.A. too much B. much too C. too many D. so many ( )9. Mom, I volunteer ___________the plates taday A. washed B. to wash C. washing D. wash ( )10. _ Why did they set up this organization? -- __________ disabled people. A. Help B. to help C. Helping D Helped ( )11. )11. He He He is is is ill. ill. ill. He He He should should should ______and ______and ______and rest. rest. rest. He He He shouldn’t shouldn’t ______out to play. A. lie down, go B. lies down, goes C. lies down, go D. lie down, goes ( )12 – He looks unhappy? -- Let’s ____________ A. A. cheer cheer cheer him him him up up B. B. helped helped helped out out out him him C. C. look look look him him him after after D. angry with him ( )13. Lisa cut her finger just now. She should put a_______ on it . A. medicine B.X-ray C. bandage ( )14. – Could you do ____________for me, please? -- Yes, with pleasure. A. something B. anything C. nothing D. everything ( )15.Mary likes drinking milk______ honey every morning. A. and B. with C. in D. has 三、完形填空(10分)A A generous generous generous gap(gap(代沟) ) has has has become become become a a a serious serious serious problem. problem. problem. I I read a 1 about it in the newspaper. Some children have killed themselves themselves after after 2 with with parents. parents. parents. I I I think think think this this this is is is because because because they they don’t often have a talk with with each other. Parents now each other. Parents now 3 more time in the office, 4 they don’t have much time to stay with their children. As times passes, they both feel that they don’t have the the __5 __5 topic(题目) ) to to to talk talk talk about. about. about. I I I want want want to to to tell tell tell parents parents parents to to to be be more with your 6 , get to know them and 7 them. And for children, children, show show show your your 8 to to your your your parents. parents. parents. They They They are are are the the the people people who love you. So 9 them your thoughts. In this way, you 10 have a better understanding of each other. ( ) 1.A. message B. call C. report D. letter ( ) 2. A. talking B. arguing C. fighting D. playing ( ) 3. A. spend B. stay C. work D. have ( ) 4. A. because B. if C. but D. so ( ) 5. A. interesting B. same C. true D. good ( ) 6. A. business B. children C. work D. office ( ) 7. A. get on well with B. look afte C. understand D. love ( ) 8. A. interest B. secret C. trouble D. feelings ( ) 9. A. tell B. ask C. answer D. say ( ) 10. A. can B. should C. must D. would 四、阅读理解(10分) Mary had some trouble in her head, so she went to see the doctor. He was a new doctor, and did not know her. So he first asked asked her her her some some some questions. questions. questions. One One One of of of the the the questions questions questions was, was, was, “What “What “What is is your age?”“Well...” “Well...” Mary Mary Mary answered, answered, answered, “I “I “I don't don't don't quite quite quite re re remember, member, member, doctor, doctor, but but I I I will will will try try try to to to think.” think.” think.” She She She thought thought thought for for for a a a while while while and and and then then then said, said, “Yes, I remember now, doctor. When I married, I was twenty -two years years old, old, old, and and and my my my husband husband husband was was was thirty thirty thirty then. then. then. Now Now Now he he he is is is sixty, sixty, sixty, I I know, and that is twice thirty. And so I am twice twenty-two. That is forty-four, isn't it?” ( ) 1. Mary went to see the doctor because _______. 2 A. she had a headache B. she had a fever C. she had caught a cold D. she couldn't think well ( ) 2. At first the doctor _________. A. asked her some questions B. examined her carefully C. gave her some medicine D. asked her to have a rest ( ) 3. Mary got married when_______. A. she was twenty years old B. she was thirty years old C. she was twenty-two years old D. she was forty-four years old ( ) 4. Mary ________. A. answered the doctor's questioned at once B. answered the question after thinking for a while C. just kept silent D. refused to tell her age ( ) 5. Mary should be _______. A. forty-four B. forty-five C. fifty D. fifty-two 五.用所给单词适当形式填空。
人教版八年级下册英语1-2单元测试题Unit 1 What’s the matter?Written test part (共95分)Ⅴ. 单项选择(每小题1分,共15分)从A、B、C、D四个选项中选择可以填入空白处的最佳答案。
( )21. No one can help you all the time. You should be ______ control of your life.A. forB. atC. onD. in( )22. I was eating in the dining hall when I ______ the news that Li Na said good-bye to her fans.A. hearB. heardC. am hearingD. was hearing( )23. Linda was unlucky. She cut ______ on some broken glass.A. myselfB. yourselfC. herselfD. himself( )24. Tom, put the keys on the table ______ I can remember to take them with me when I go out.A. as long asB. unlessC. so thatD. because( )25. The boy didn’t get an education so he has problems ______ a job.A. to findB. findingC. findD. found( )26. After dinner, Dale’s father is used to ______ on the b ed for a rest.A. lieB. lyingC. riskD. risking( )27. I found myself in a difficult ______. I must do something to get out of it.A. competitionB. discussionC. predictionD. situation( )28. One of his fingers was ______ in the accident.A. made upB. taken onC. put upD. cut off( )29. If you eat all that chocolate in a day, it’ll make you ______.A. sickB. hungryC. tiredD. creative( )30. A dictionary tells you what words ______.A. wonderB. chooseC. meanD. solve( )31. On my way home, I saw more than 100 women ______ in the square.A. to danceB. are dancingC. to dancingD. dancing( )32. —Why does Sue look upset?—She went to the bookstore by bus but she ______ the bus at the wrong stop.A. got offB. got upC. turned offD. turned up( )33. You ______ drink and drive. It’s too dangerous.A. should B. shouldn’t C. need D. needn’t( )34. The climber hurt himself ______ the mountain.A. climbB. to climbC. climbingD. climbed( )35. —Alice, my head feels hot now.—______.A. Not at allB. You should go to a doctorC. I’m sorryD. You shouldn’t tell it to your motherⅥ. 完形填空(每小题1分,共10分)先通读下面的短文,掌握其大意,然后从A、B、C、D四个选项中选择可以填入空白处的最佳答案。
八年级英语下册第1-2单元测试及答案2014年春季新版八年级下册英语第1---2单元测试班级:姓名:学号:分数:一.单项填空。
(每题1分,共20分)( )1. My uncle isn’t _____ at the moment, so I have to stay at home to take care of him.A. feel wellB. feeling well.C. feeling good( )2. You look terrible! What’s the matter _____ you?A. withB. onC. at( )3. There is ____ snow here. It’s ____ cold.A. too much ,much tooB. much too, too muchC. too many, much too( )4. To my__________, the little girl is the first to go to bed.A. surprisesB. surpriseC. surprised( )5. .You should_________playing computer. It’s bad for your eyes.A.get upB.put upC.give up( )6. I don’t know how to do with the problems. Could you give m e _____?A. some advicesB. advicesC.some advice( )7. It’s important for us _____ in good health.A. keepB. keepingC. to keep( )8. The radio says there is going to be a heavy rain this afternoon.I think we should _______ planting the trees until tomorrow.A. put onB. put upC. put off( )9. Our parents often tell us __________alone in the river in summer.A. not swimB. not to swimC. not swimming( )10. - I'll have a tennis game tomorrow. I'm a little nervous.-- Believe in .You're the best in our club.A. herselfB. myselfC. yourself( ) 11. --Can I help you, boy?---Yes. There is wrong with my bike.A. somethingB. anythingC. everything( ) 12. --- I didn’t feel well today.---You stay in bed and have a good rest.A. shouldB. canC. must( ) 13. The story book is very ,the students are in studying.A. interest, interestingB. interesting, interestedC. interested, interesting ( )14. You look tired, you should have a good rest for _____ daysA. a fewB. fewC. little( ) 15. His grandparents live in a small house, but they don’t feel.A. lonely, aloneB. alone, aloneC. alone, lonely( )16.Jill, we'll have training with the dog.-Great. That's what I'm expecting.A. six-monthsB. a six-monthsC. six months'( )17. l.inda used long hair. Now she has short hair.A. havingB. to haveC.. has( )18.----What was Fred going to do?----He was going to put some signs old books.A. up; asking forB.on; to ask toC. up; asking to( )19.David. we sugar. Could you go and buy some?A.have been run out ofB.have run out ofC.have been run out( )20.Jimmy, your books are everywhere on your desk.-Oh, sorry . I'll right now.A. put them awayB. put them upC. put them on二.完形填空(每小题1分,满分10分)阅读下列短文,从每小题所给的A、B、C、D四个选项中选出一个最佳选项。
人教版第二学期八年级英语第一、二单元专项测试卷选择题(带答案详解)16.— We believe Jack can pass his exam this time.— Yes, I agree. _________ he works in his free time!A. What hardB. How hardC. How hardlyD. What a hard17.What ________ you ________ May is a true friend?A. make; thinkB. makes; thinkC. make; to thinkD. makes; to think18. --Did you go shopping yesterday?--_________.A. Yes, I doB. Yes, I didC. Yes, I amD. No, I couldn’t19.—What _______ the number of the students in your school?—About two thousand. A number of them _______ from the countryside.A. are, areB. is, isC. are, isD. is, are20.一Please don't make any noise in the reading room.A. Sorry, I don'tB. Yes, I won'tC. Sorry, I won'tD. OK, I didn't21.-How____do you read English newspapers?-I read China Daily every day.A. longB.oftenC.manyD.much22.I didn’t go to Penang Hill _____ the bad weather.A. soB. becauseC. because ofD. but23.Mr. Lee is an animal lover. He does everything he can animals.A. huntingB. to huntC. to protectD. protecting24. — Are there any tomatoes in the fridge?-----_____________.—What’s in the fridge then?-----_____________.A. Nothing, NoneB. None, NothingC. None, NoneD. Noting, Nothing25.一How was your visit to the park?一It was a(n) one. The weather was terrible and I had a bad cold after the trip.A. excitingB. wonderfulC. excellentD. awful26.Teachers often tell us_ _______in the river after school.A. don't swim B.not swim C.not to swim D.to not swim27.He seems _________________ very happy.A. isB. to isC. to beD. be28.There are _________________ people, so it’s very crowded.A. quite a fewB. a lotC. quite a littleD. few29.How about ________a drink?A. haveB. to haveC. hadD. having30.Eating lots of vegetables and enough meat can________you healthy all the time.A. haveB. getC. keepD. stay31.—Can you help me ______ the housework?—Sorry, Mom. I have to help my father______ the car.A. with; cleanedB. with; cleanC. does; to cleanD. to do; cleaning32.一DO you often go fishing with your father? 一No, _______ .A. neverB. alwaysC. usuallyD. often33. — Do you t hink yesterday’s math problem was difficult?— Yes. I could work it out.A. hardlyB. easilyC. finallyD. nearly34.Rio(里约)will become the most amazing city the Olympic Gaines in August.A. instead ofB. because ofC. as a result35.I want to go to the zoo. I feel very to stay at home all day.A. interestedB. interestingC. boredD. boring36.—When can you come to my party tomorrow?—I’m not sure,but I’ll to arrive early.A. waitB. forgetC. learnD. try37.She is new here. So we know ______about her.A. somethingB. anythingC. nothingD. everything38.What _____________ Dean ____________ last Saturday night?A. is; doingB. does; doC. did; doD. was; do39.Li Ming went to Shanghai with his parents and they ________the science museum.A. visitB. visitedC. visitsD. are visiting40.I bought a big box ________ books for kids in poor areas.A. collectsB. to collectC. collectD. collected41.Tom has to sell his bike because he has ________ all his money.A. ran outB. ran out ofC. run outD. run out of42.I’m making some plans________ in an old people’s home this summer.A. to workB. workingC. worksD. am working43.—What do I have to do if I want to become famous?—You have to be prepared to ______ your normal life. You can never imagine how difficult the road to success is.A. take upB. get upC. look upD. give up44. —The volunteers really provided the players support.—Exactly._______ they helped make the event!A. What a great successB. What great successC. How a great successD. How great success45. —What should I do, doctor?—_______healthy, you should take more exercise.A. KeepB. KeepingC. To keepD. Having kept46.—Would you mind my _______ the window?— _______. There’s too much smoke in the room.A. open; Not at allB. opening; Not at allC. open; Of courseD. opening; Better not47.— Tom, why not stop _________ a rest?— Oh, no, mum. It’s so interesting that I can’t stop _________ the kite.A. having; to flyB. to have; flyingC. to have; to flyD. having; flying48.— How many students are there in each group?— Usually each group _______ six students in our class.A. is made fromB. is made up ofC. is made inD. is made of49.—She’s never been to Hainan, _________?— ________. She went there last week for the first time.A. has she; Yes, she hasB. hasn’t she; No, she hasn’tC. is she; Yes, she isD. isn’t she; No, she isn’t50. --- Has your friend completed his design?---Not yet.. he ______ on it last night..A. workedB. has workedC. is workingD. was working参考答案1.C【解析】句意:自从星期一我们参观了许多名胜古迹。
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第十章 浮力
班级: 姓名 座号 得分
一、 选择题(每题3分,共36分)
1、一密度计分别浮在水和盐水中, 则排开液体的体积是( )
A .在水中少一些;
B .在盐水中少一些;
C .一样多;
D .条件不够, 不能判断。
2、如图1所示,有一种被称作“跟屁虫”的辅助装备是游泳安全的保护神。
“跟屁虫”由一个气囊和腰带组成,两者之间由一根线连接。
正常游泳时,连接线是松驰的,气囊漂浮着,跟人如影相随。
在体力不支等情况下,可将气囊压入水中,防止人下沉,在此情况下( ) A .人的重力减小了 B .人所受的重力方向改变了 C .气囊排开水的体积变小了 D .气囊受到的浮力变大了
3、物理小组制作的潜水艇模型如图2所示。
通过胶管A 从烧瓶中吸气或向 烧瓶中吹气,就可使烧瓶下沉、上浮或悬浮。
当烧瓶处于如图3所示的悬浮 状态时,若从A 管吸气,烧瓶将会( )
A .上浮,它受到的浮力增大 B. 下沉,它受到的浮力减小 C .下沉,它受到的浮力不变 D. 上浮,它受到的浮力不变
4、研究发现,同一物体在地球的不同纬度所受的重力不同,物体越靠近赤道,所受重力越小;越靠近
地球两极,所受重力越大。
一艘军舰从我国青岛港出发,前往位于赤道附近的亚丁湾执行护航任务,若海水密度及舰
艇质量不变,比较两地,则该舰艇( ) A .在亚丁湾所受浮力较小 B .在亚丁湾所受浮力较大 C .在两处所受浮力相等 D .在亚丁湾所排开海水的重力较大
5、把重为5N ,体积为600cm 3的物体投入水中,若不计水的阻力,当物体静止时,下列说法正确的是(g 取10N /kg )( )
A .物体漂浮F 浮=6N
B .物体悬浮F 浮=5N
C .物体漂浮F 浮=5N
D .物体沉在水底F 浮=5N
6、有一很薄的塑料袋(质量忽略不计)装满水后, 用细线系紧后挂在弹簧秤上称为10牛, 若将其浸没 在水中称, 弹簧秤的示数为 ( )
A .10牛
B .0 牛
C .接近10牛
D .接近8 牛
7、下列情形中,浮力增大的是( )
A .游泳者从海水中走上沙滩
B .轮船从长江驶入大海
C .海面下的潜艇在下潜
D .“微山湖”号补给舰在码头装载货物
8、如图3所示,把一个苹果放入浓盐水中,苹果处于漂浮状态。
如果把水面以上
的部分切去,则余下的部分( )
A. 沉入水底
B. 仍然漂浮
C. 刚好悬浮
D. 无法判断 9、如图4,对于水中正在上升的气泡,下列说法正确的是( ) A .气泡受到水的压强变小、浮力变小 B .气泡受到水的压强变小、浮力变大
C .气泡受到水的压强变大、浮力变小
D .气泡受到水的压强变大、浮力变大
10、两个物体分别挂在两个弹簧秤下, 将它们都没于水中, 发现两只弹簧秤的示数减小的数值相同,
那么, 这两个物体必有相同的( )
A .密度;
B .体积;
C .质量;
D .重力
11、把体积相等的石块和木块同时放入水中,发现石块沉底,木块漂浮在水面上。
则刚放入水中 时,比较它们所受浮力( )
A .木块大
B .石块大
C .一样大
D .无法判断
12、用铜(密度大)和铁制成的两个实心金属球,用细线栓好,分别挂在两个弹簧测力计上,两测力计的读数相等,现将两个金属球都浸没在水中,则( )
A .两弹簧测力计的读数一样大
B .挂铜块的弹簧测力计的示数大
C .挂铁块的弹簧测力计的示数大
D .无法确定 二、填空题(每空1分,共20分)
13、轮船、鸭子、木块能浮在水面,这是因为它们受到了水的 _ ____,方向____ _.
14、一只苹果的质量为140g 、体积为1.8×10-4m 3
,用手将其浸没在水中时,苹果受到的浮力为 N (g 取10N/kg ),
松手后苹果将 __________(选填“上浮”、“下沉”或“悬浮”).
15、某同学用如图5所示的装置,研究物块受到液体的浮力。
弹簧测力计吊着物块在空气中
称时,读数为3N ;当把物块浸没在煤油中称时,读数为2.5N , 此时物块受煤油的浮力为______N 。
当把物块浸没在水中称时,读数为 _______2.5N (大于、小于、等于)。
由此可得出结论: 浸没在液体中的物体所受的浮力跟________-有关。
16、用手将一重为6N 的物体全部压入水中,物体排开的水重为10N ,此时物体受到的浮力为
N ;放手后物体将 (填“上浮”、“下沉”或“悬浮”),待物体静止时所受浮力为
N 。
17、今年
4月,为庆祝人民海军建军60
周年,我潜艇部队参加了在青岛举行的海军检阅活动。
某潜水艇的总体积为1.
5
×103m
3,最大下潜深度350m
,此潜艇位于海面以下100m 处时受到的浮力大小是
N ,受到海水的压强是 Pa 。
(海水的密度为1.03×103kg/m 3,取g=10N/g)
18、小明同学把一个体积为125cm 3
苹果放入水中,苹果在水里处于悬浮状态, 则苹果
所受的浮力为 N ,小明从水中取出苹果,分成一个大块和一个小块,如图6所示,再将小块放入水中,发现小块沉入水底,据些现象可以推断:若将大块浸没入水中,松手后大块将会 (g=10N/kg )
19、 一艘远洋货轮在装上货物后,发现船身下沉了一些,则它受到的浮力
(填“变大”、“变小”或“不变”)。
当船由长江驶入大海后,船受到的浮力 。
气囊 腰带
t
第2页
20、一个重4.9 N 的物体,放入装满水的容器中时,溢出了0.4 kg 的水,则此物体在水中静止时将 ___ __.(填“漂
浮”“悬浮”或“沉入底部”)
21、挂在弹簧测力计上的铁块重7.9 N ,当它全部浸没在水中时,弹簧测力计的示数是6.9 N ,此时铁块所受的浮力为___
_ N ,当铁块一半进入水中时,浮力是_ ___ N.
22、一个鸡蛋悬浮在盛有盐水的杯中,现在往杯中加入纯水,这时悬浮在水中的鸡蛋将逐渐_____,如果往杯中继续加
盐使其溶化,鸡蛋将逐渐__ ___.
三、作图实验探究题(23题6分,24、25、26题每空2分,21题10分,共24分) 23、图7中的物体分别处于上浮、悬浮和下沉状态,请画出物体在不同状态下的受力示意图
.
图7
24、在探究“影响浮力大小的因素”这一问题时,思思为大家做了如图8所示的一系列实验.请你从中选出一些图,针对某一个因素进行探究,并通过分析弹簧测力计的示数,说明你的探究结果。
(1)、从图中可知物体完全浸没在水中时受到的浮力是 。
(2)、比较图②和③可知浮力的大小与 有关。
(3)、比较图③和④可知浮力的大小与 无关。
(4)、比较图 和 可知浮力的大小与液体的密度有关。
图8
25、为了探究物体的浮沉条件,实验室提供了如下器材:弹簧测力计、量筒、烧杯、金属块、木块、细线、水及其他简单辅助器材。
第一小组:探究金属块的下沉条件。
实验中,他们用两种方法测量了物体受到的浮力:
方法1:称重法。
测量过程及示数如图9(甲)所示,则金属块所受的浮力为 N 。
方法2:阿基米德原理法。
测量过程与示数如图(乙)所示,则排开水的体积为 mL ,根据F 浮=G 排=ρ
水
V 排g 可计算出浮力。
第二小组:探究木块上浮的条件。
要测量木块浸没时的浮力,你准备选用上述两方法中的方法 (选填“1”或“2”),并简要说明操作中还应采取的措施: 。
四、计算题(26题12分,27题8分,共20分)
26、密度是0.6×103 kg/ m 3的木块,体积是4 m 3,当它浮在水面上时(取g =10 N/kg ),求: (1)木块重力;(2)木块受到的浮力;(3)木块排开水的体积;
27、“武汉号”导弹驱逐舰在亚洲处于领先水平,参加了我国海军首批赴亚丁湾、索马里海域的护航任务。
“武汉号”的排水量为7000t ,是一种防空、反潜、反舰能力均衡的远洋驱逐舰。
(海水的密度为1.03×103kg/m 3,g 取10N/kg ) (1)满载时,“武汉号”受到的浮力有多大?
(2)若舰底某处距海面的深度为8m ,则该处受到海水的压强是多少?。