第十一单元检测

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通用版七年级英语下册Unit11 单元检测卷作业课件新版人教新目标版

通用版七年级英语下册Unit11 单元检测卷作业课件新版人教新目标版

too many“太多”,修饰可数名词复数形式。
( B )30.—Who did you go to the zoo

—My family. A.of
B.with
C.in
D.around
根据答语可知问句是询问和谁一起去动物园,故
用介词 with。
( D )31.My father A.buy a bike to me
on my last birthday. B.bought a bike to me
C.buy a bike for me D.bought a bike for me
buy sb. sth./buy sth. for sb.意为“为某人买某物”; 由 last birthday 知用一般过去时。故选 D。
B.That sounds really boring
C.I did my homework
D.I watched TV at home
运用排除法。
( A )29.There are A.too many
people in the hall. B.too much
C.many too
D.much too
Day
Weather
Activities
Monday sunny and swam and went 16. shopping
hot
Tuesday 17. rainy went to a 18.museum and then
had Sichuan food
Wednesday 19. cool went to 20.City Park
( C )33.—
.Someone is coming.

九年级化学下册《第十一单元:盐、化肥》单元检测试卷及答案

九年级化学下册《第十一单元:盐、化肥》单元检测试卷及答案

第十一单元盐化肥单元测试题班级姓名座号评分相对原子质量:N:14 O:16 H:1 C:12 Cl:35.5 Ca:40 Na:23一. 我会选择(每题只有一个正确答案)1. 下列物质,属于盐类的一组是()A. 食盐、碳酸氢钠、碱式碳酸铜B. 食醋、生石灰、氢氧化钙C. 纯碱、烧碱、干冰D. 氯化钡、硫酸钾、蔗糖2. 配制番茄的无土栽培营养液要用到KNO3做肥料,化肥KNO3是一种()A. 复合肥料B. 磷肥C. 钾肥D. 氮肥3. 可溶性的钡盐有毒。

张进误食了BaCl2,则应立即服用的解毒药剂是()A. 糖水B. 碳酸钠溶液C. 食盐水D. 硫酸镁溶液4. 实验室有两瓶无色溶液的标签被腐蚀,只知道其中一瓶是氢氧化钙,另一瓶是硫酸,要鉴别它们不可选用的试剂为()A. CO2 B.BaCl2 C.Na CO23 D. HCl5. 下列各组物质在溶液中能大量共存的是()A. NaCl AgNO、3 B.KOH H SO、24C. Na CO HNO233、 D. KNO HCl3、6. 蒸馒头时某同学为了探究食用碱的主要成分,向其中加入了稀盐酸,发现产生了一种能使澄清的石灰水变浑浊的气体,则食用碱中可能含有()A. H SO24 B.Na CO23 C. NaOH D.CO27. 下列物质间不能发生反应的是()A. 氢氧化钠溶液和硫酸溶液B. 碳酸钠溶液和氢氧化钙溶液C. 铜和硝酸银溶液D. 氢氧化钠溶液和氯化钾溶液8. 将下列试剂分别滴入氢氧化钠溶液、饱和石灰水和稀硫酸中,能产生三种不同现象的是()A. 硫酸钠溶液B. 氯化钠溶液C. 紫色石蕊试剂D. 碳酸钠溶液9. 能用来鉴别稀盐酸、纯水、澄清的石灰水三瓶无色液体的试剂是()A. 酚酞试液B. 稀硝酸C. 碳酸钠溶液D. 硫酸钠溶液10. 要除去稀硝酸中的杂质稀盐酸,可加入适量的()A. Na CO23 B.KNO3 C. NaOH D.AgNO311. 要除去粗盐中的不溶性杂质,可采用的方法是()A. 溶解、蒸馏B. 溶解、过滤、蒸发C. 加酸溶解、蒸发D. 加吸附剂、过滤12. 下列实验方案中,能达到预期目的的是()A. 用NaOH溶液除去CO2中混有的HCl气体B. 用点燃的方法除去CO中混有的少量CO2C. 用稀盐酸除去热水瓶胆壁上的水垢(主要成分是碳酸钙和氢氧化镁)D. 用BaCl2溶液除去KNO3溶液中混有的少量K SO24,得到纯净的KNO3溶液13. 只需加水就可将四种白色固体鉴别出来:(1)NaCl、(2)BaCl2、(3)CuSO4、(4)Na SO24,正确的鉴别顺序是()A. (1)(3)(4)(2)B. (2)(3)(4)(1)C. (3)(2)(4)(1)D. (2)(4)(1)(3)14. 用石灰石、水、纯碱为原料制取烧碱,所发生的反应都不属于()A. 化合反应B. 分解反应C. 置换反应D. 复分解反应15. 下列各组物质的稀溶液中,不用其他试剂就能鉴别出来的是()A. Na CO KCl HNO Na SO23324、、、 B. K CO H SO HNO BaCl232432、、、C. HCl AgNO HNO NaCl、、、33 D.Na SO NaOH CuSO NaCl244、、、16. 除去下列杂质,所用试剂和方法不正确的是()物质杂质除杂试剂和方法A. KOH K CO23()Ca OH2溶液、过滤B. KNO3K SO24()Ba NO32溶液、过滤C. H SO24HCl AgNO3溶液、过滤D. CuO KNO3水、过滤17. 有四瓶无色溶液,它们分别是:(1)稀盐酸、(2)稀硫酸、(3)NaOH溶液、(4)Na SO24溶液。

第十一单元盐、化肥素质达标检测题

第十一单元盐、化肥素质达标检测题

第十一单元盐、化肥素质达标检测题学校:班级:姓名:学号:成绩:可能用到的相对原子质量:H—1 C—12 O—16 N—14 Cl—35.5 Ca—40一、选择题(共30分)1.下列各种盐,对人体有害的是()。

A.CaCO3B.NaCl C.NaCO3D.NaNO3 2.配制番茄的无土栽培营养液要用到KNO3做肥料,化肥KNO3是一种()。

A.复合肥料B.磷肥C.钾肥D.氮肥3.下列化肥中,不能与碱性物质混用的是()。

A.硫酸钾B.硝酸铵C.磷矿粉D.尿素4.1921年我国科学家成功发明了联合制碱法,为纯碱和氮肥业技术的发展作出了杰出的贡献。

这位科学家是()。

A.张青莲B.李四光C.侯德榜D.华罗庚5.置于空气中的氢氧化钠因与CO2反应而部分变质,要除去氢氧化钠中混有的杂质,应加入适量的物质是()。

A.Ca(OH)2 B.HCl C.H2SO4D.KOH 6.蒸馒头时某同学为了探究食用碱的主要成分,向其中加入了稀盐酸,发现产生了一种能使澄清的石灰水变浑浊的气体,则食用碱中可能含有()。

A.H2SO4B.Na2CO3C.NaOH D.CO27.滴有酚酞试液的Ba(OH)2溶液分别与下列物质恰好完全反应后,溶液仍显红色的是()。

A.K2CO3溶液B.稀盐酸C.CO2D.H2SO4溶液8.将下列试剂分别滴入氢氧化钠溶液,饱和石灰水和稀硫酸中,能产生三种不同现象的是()。

A.硫酸钠溶液B.氯化钠溶液C.紫色石蕊试剂D.碳酸钠溶液9.能用来鉴别稀盐酸、纯水、澄清的石灰水三瓶无色液体的试剂是()。

A.酚酞试液B.稀硝酸C.碳酸钠溶液D.硫酸钠溶液10.要除去稀硝酸中的杂质稀盐酸,可加入适量的()。

A.Na2CO3B.KNO3C.NaOH D.AgNO311.新买的铝锅、铝壶用来烧开水时,凡是水浸出的部分都会变黑,这与水中含有下列可溶性盐有关的是()。

A.钠盐B.钾盐C.钙盐D.铁盐12.自来水生产中,常用液态氯来进行杀菌消毒,氯气与水反应的产物之一是盐酸,。

九年级化学下册《第十一单元:盐、化肥》单元检测试卷附答案

九年级化学下册《第十一单元:盐、化肥》单元检测试卷附答案

第十一单元盐化肥单元测试一、选择题(下列各题只有1个正确选项,将正确选项的序号填入括号内;共30分,每小题2分)1.下列肥料不属于复合肥料的是A.硝酸钾B.磷酸氢二铵C.碳酸钾D.磷酸二氢钾2.向盐酸和氯化钙的混合溶液中逐滴滴加碳酸钠溶液,反应现象是A.只看到有大量气泡冒出B.只有白色沉淀析出C.开始冒气泡,后出现白色沉淀D.开始出现白色沉淀,后冒气泡3.既能与锌发生置换反应,又能与烧碱溶液发生复分解反应的溶液是A.氯化铜溶液B.食盐溶液C.氯化钙溶液D.碳酸钠溶液4.下列关于盐的说法中,正确的是A.只能解离出金属离子和酸根离子的物质叫盐B.能解离出金属离子和酸根离子的化合物叫盐C.盐的水溶液一定呈中性D.盐的化学式中一定含有金属离子和酸根离子5.“粗盐提纯”的实验中,蒸发时,下列操作正确的是A.把还浑浊的滤液倒入蒸发皿里加热蒸发B.开始析出晶体后,要用玻璃棒不断搅拌液体C.蒸发皿中出现多量固体时,就停止加热D.待滤液完全蒸干时,才停止加热6.下列物质不能用于治疗胃酸(含盐酸)过多的是A.碳酸氢钠B.氢氧化钠C.轻质碳酸钙D.氢氧化铝乳液7.检验碳酸盐的正确方法是A.滴加氯化钡溶液产生白色沉淀B.滴加盐酸产生能使带火星的木条复燃的气体C.加热,产生使澄清石灰水变浑浊的气体D.滴加盐酸产生使澄清石灰水变浑浊的气体、K+、Na+、H+、Cl-,则溶于水的盐至少有8.某溶液中存在着SO 24A.一种B.两种C.三种D.四种9.下列说法中正确的是A.凡是生成盐和水的反应都是中和反应B.与酸反应生成盐和水的物质一定是碱C.凡是有盐参加的反应都是复分解反应D.当溶液pH=7时,溶液呈中性10.下列各组混合物能够发生复分解反应的是A.Fe(OH)2+CuSO4B.BaCO3+NaClC.AgNO3+BaCl2D.Na2SO4+HCl11.下列方法:①金属溶于酸;②碳酸盐溶于酸;③氧化物溶于酸;④氢氧化物溶于水;⑤氧化物溶于水。

人教版八年级物理下册《第十一章功和机械能》单元检测卷-附答案

人教版八年级物理下册《第十一章功和机械能》单元检测卷-附答案

人教版八年级物理下册《第十一章功和机械能》单元检测卷-附答案学校:___________班级:___________姓名:___________考号:___________一、单选题1.如图是探究“物体的动能大小与哪些因素有关”的实验装置图。

实验中,探究的动能是指()A.小球在斜面上的动能B.小球撞击木块时的动能C.小球撞击木块后的动能D.木块被小球撞击时的动能2.为缓解我县当前旱情,郯城县于2024年6月15日在马头镇作业点(东经118度19分、北纬34度36分)组织开展了人工影响降雨地面作业,有效缓解了我县的旱情。

在火箭弹加速升空的过程中,下列说法正确的是()A.动能不变B.动能减小C.重力势能增大D.机械能不变3.小勇在中考体育测试中,参加立定跳远项目,如图所示,下列说法中正确的是()A.在起跳时用力蹬地,是利用了物体间力的作用是相互的B.在腾空的过程中他受到平衡力的作用C.在最高点时,若不受力的作用,他将保持静止状态D.下落的过程中,动能转化为重力势能4.如图所示,小华放学后背书包回家时,下列的过程中他对书包没有做功的是()A .小华将桌上的书包背到肩上B .小华背着书包走下楼梯C .小华背着书包水平匀速行进D .小华背着书包乘电梯上楼5.如图甲所示,木块放在水平面上,用弹簧测力计沿水平方向拉动木块使其做直线运动,在相同水平面上两次拉动同一木块得到的s t -关系图像如图乙。

第1、2两次弹簧测力计示数分别为12F F 、;如果运动时间相同,拉力所做的功分别为12W W 、。

下列判断正确的是( )A .1212F F W W =<,B .1212F F W W <<,C .1212F F W W >>,D .1212F F W W =>,6.如图物体在相同力F 的作用下,分别在光滑水平面、粗糙水平面和粗糙斜面上沿着力的方向移动了相同的距离s ,力F 做的功分别为W 1、W 2、W 3,比较甲、乙、丙三次所做的功的大小( )A .W 1=W 2=W 3B .W 1>W 2>W 3C .W 1<W 2 <W 3D .无法判定7.掷实心球是大庆市中考体育考试项目之一,某同学掷出的实心球的运动轨迹如图所示,O 点是实心球刚离开手的位置,A 点是实心球运动到最高点的位置,B 点是实心球落地前瞬间的位置。

八年级物理下册《第十一章功和机械能》单元检测卷及答案(人教版)

八年级物理下册《第十一章功和机械能》单元检测卷及答案(人教版)

八年级物理下册《第十一章功和机械能》单元检测卷及答案(人教版)一、单项选择题。

(本大题共7小题,每题3分,共21分。

每小题只有一个选项是符合题意的)1.仅用8天建成的武汉火神山医院彰显了中国速度!为了在最短时间完成地面基础建设,上百台挖掘机同时工作,其目的是为了增大所有挖掘机的()A.总功B.总功率C.机械效率D.有用功2.如图所示为小明同学做挺举连续动作的几个状态图,下列说法不正确的是()A.小明同学从准备状态发力到上拉状态过程中对杠铃做了功B.小明同学从上拉状态发力到上挺状态过程中对杠铃做了功C.小明同学从上挺状态发力到站立状态过程中对杠铃做了功D.小明同学在站立状态过程中对杠铃做了功3.如图所示是甲,乙两物体做功与所用时间之间的关系图像,由图可知,甲物体的功率与乙物体的功率相比较()A.P甲>P乙B.P甲<P乙C.P甲=P乙D.无法确定4.游乐场的过山车从高处无动力向下运行的过程中()A.机械能逐渐增大B.弹性势能转化为动能C.重力势能转化为动能D.重力势能逐渐增大5.如图,用大小相等的拉力F,分别沿斜面和水平面拉木箱,拉力方向和运动方向始终一致,运动时间t ab>t cd,运动距离s ab=s cd,比较两种情况下拉力所做的功和功率()A.ab段做功较多B.ab段与cd段的功一样多C.ab段功率较大D.ab段与cd段的功率一样大6.(2021春•东湖区校级月考)物理兴趣小组的同学利用如图所示的装置研究影响动能的因素,下列说法正确的是()A.甲、乙两组实验是研究动能与高度的关系B.乙、丙两组实验不能用于研究动能与质量的关系C.甲、乙、丙三组实验中的研究对象是小木块D.如图丁,用形状相同的塑料球和铁球(铁球质量大)将弹簧压缩到相同程度后再放手,可研究动能与质量的关系7.如图所示,将一根弹簧和一只质量为1 kg的金属球(球上有一直小孔)套在铁架台的金属杆AB上面。

现将小球提到B端后松手,小球的高度随时间变化的情况如图乙所示。

人教版2019-2020学年七年级英语下册 Unit 11 How was your school trip单元检测卷及答案

人教版2019-2020学年七年级英语下册 Unit 11 How was your school trip单元检测卷及答案

第十一单元检测题试题卷第一部分听力(共四节,满分30 分)第一节(共5 小题;每小题 1.5 分,满分7.5 分)听句子,从题中所给的A、B、C 三个选项中选出与所给句子内容相关的图画。

每个句子听两遍。

()1.A B C()2.A. B. C.()3. A. B. C.()4 A B C()5. A B C第二节(共5 小题;每小题 1.5 分,满分7.5 分)听句子,从题中所给的A、B、C 三个选项中选出与所听句子内容相符的正确答语。

每个句子听两遍。

()6. A. I like the dogs. B.No, I don’t C. Yes, I am()7. A. Yes, please. B. Sounds interesting. C.You’re welcome.()8. A. In the dining hall. B. Next week. C.Half past seven()9. A.Yes, I did B. No, I don’t. C.Yes ,I am()10. A. Having breakfast. B. went to the mountains. C. in the park .第三节(共 5 小题;每小题 1.5 分,满分7.5 分)听下面5 段对话,每段对话后有一个小题,从题中所给的A、B、C 三个选项中选出最佳选项。

每段对话听两遍。

( )11. Where are Tom and Jane?A.In a hospital. B. At home. C. At school.( )12. Why does Jane ask brother for help?A. Because there are a few books.B. Because those books are new.C. Because the books are heavy.()13. How is the weather in Canada?A. Rainy.B. Sunny.C. Windy()14. Where’s Lucy?A. In LondonB. In Tokyo.C. In Beijing.( ) 15. What’s Alice doing now?A. She is reading an English book.B. She is reading a story book.C. She is reading a picture book.第四节(共5 小题;每小题 1.5 分,满分7.5 分)听下面2 段对话或独白,每段对话或独白后有几个小题,从题中所给的A、B、C 三个选项中选出最佳选项。

人教版七年级英语上册复习与测试第11单元综合质量检测试卷

人教版七年级英语上册复习与测试第11单元综合质量检测试卷

第十一单元综合质量检测试题测试时间:50分钟测试总分:80分Ⅰ.单项选择(15分)1.I go to ________ work after ________ breakfast every day.A./;/B.the;a C.the;/D./;the 2.My uncle wants to find a ________ in Shanghai.A.job B.work C.jobs D.works 3.一Wha t’s the time? 一________eight thirty.A.Its B.It’s C.This is D.They’re 4.Many people love to ________ music.A.listen B.listening C.listen to D.listening to 5.People in the west usually ________ dinner ________ the evening.A.eats;in B.eat;at C.eat;in D.eats;at 6.一________do you usually watch TV?一I usually watch TV at seven.A.What time B.What’s time C.What D.What day 7.I have ________to do every day.A.many homework B.much homeworksC.lots of homework D.many homeworks.8.Mom,it is l0:00 pm.I want to ________.A.get up B.go to school C.go to bed D.get home 9.Henry often ________us interesting stories(故事).We all love him.A.tells B.speaks C.tell D.speak 10.一Do you want to know________ my school?一Yes,I do.A.with B.around C.about D.in 11.—When does Lucy go to a movie? —________A.She goes to Hongxing Cinema.B.She goes to a movie with her sister.C.She goes to a movie on weekends.D.At school.12.一Xiao Hua is a student.What does he usually do at 6:45 am?一________A.He has breakfast B.He gets homeC.He goes to bed D.He eats dinner13.________ fine day to have a school trip!A.What a B.What an C.What D.How a 14.(南京中考)一________kind girl Nancy is!一Yes,she is always ready to help others.A.What B.What a C.How D.How a 15.(云南中考)一Excuse me.Do you have a watch?一________.It’s time for dinner.A.Yes,once I did B.No,I don’tC.Here you are D.Yes,it’s 6:00Ⅱ.完形填空(10分)I have a good friend. 1 name is Ed.Let 2 tell you something about his day.He usually gets up 3 6:30 a.m.and often 4 a bus to school at 7:30.School 5 at 8:00.He has four 6 in the morning.He has lunch 7 school.The food in his school 8 very good.He 9 home at around 5:00.He usually 10 his homework in the evening.1.A.Her B.He’s C.His D.He2.A.I B.me C.my D.we3.A.at B.on C.in D.of4.A.brings B.take C.takes D.goes5.A.start B.starts C.begin D.to begin 6.A.Class B.a class C.classes D.lesson7.A.on B.of C.with D.at8.A.be B.am C.is D.are9.A.goes B.goes to C.get D.gets to 10.A.do B.does C.doing D.to doⅢ.阅读理解(30分)(A)Henry is a shop assistant(店员).He works in a shop at the station(车站).He gets up at 7:30.He drives to the station.At the station he sees a friend,Mary.She goes to work by train.Her train leaves at 8:00.Then Henry starts work.At four o’clock he stops work for fifteen minutes (分钟)and drinks coffee,He doesn’t have lunch.At 11:00 he stops work and has tea and a cake for thirty minutes.He leaves work at 5:00.He doesn’t stay late.1.How does Henry go to work?A.On foot.B.By bus.C.By car.D.By train.2.How many hours does Henry work in a day?A.About 7 hours.B.8 hours.C.About 9 hours.D.10 hours.3.Does Henry have lunch at home?A.Yes,he does.B.No,he doesn’t.C.Yes,he cooks by himself(他自己).D.He has supper in a small restaurant(饭店).4.When does Henry go back to work at noon?A.About 10:45.B.About 11:00.C.About 11:15.D.About 11:30.5.When does Mary start work?A.At 4:00.B.At 8:30.C.After 9:00.D.After 8:00.(B)6.What time does Tom White get up?A.At five thirty.B.At six thirty.C.At eight o’clock.D.At seven o’clock7.John Smith eats breakfast at ________ am.A.6:30 B.7:00 C.8:00 D.7:30 8.How many people don’t go t o work by bus every day?A.Two.B.Three.C.Four.D.One.9.__________ is good at(擅长)singing and __________is good at writing books.A.Mary Green:Tom White B.John Smith;Mona BlackC.Tom White;John Smith D.Mona Black;Mary Green10.If (如果)you want to buy a nice T shirt,__________can help you.A.John Smith B.Mona Black C.Mary Green D.Tom White(C)My name is Bill Black.I am a worker in a big factory.I don’t work in the mornin g.I only work at night.Every morning I come home at about 6:30.I have breakfast at seven.After breakfast I go to bed.I get up at 2:30.I eat lunch at 2:45 and supper at 7:40.Then I go to work at 7:45.I start working at nine.I look after the shop every night.I like my work very much.根据短文内容,判断正(T)误(F)。

2020届人教版九年级上学期检测题化学试题 第11单元 盐和化肥(解析版)

2020届人教版九年级上学期检测题化学试题 第11单元 盐和化肥(解析版)

第十一单元盐和化肥测试卷温馨提示:本卷共三大题,计 25 小题,满分 100 分,考试时间 90分钟。

一、单项选择题:(本题共15小题,每小题3分,满分45分)1.(A)蒸馒头、炸油条时常用到一种白色物质,它既能中和发酵过程产生的酸,又能引起发泡作用,这种白色物质是()A.NaOH B.NaHCO3 C.Ca(OH)2D.NaCl2.(A)下列物质中不属于碱的是()A.火碱 B.纯碱 C.消石灰 D.氨水3.(A)碳酸氢钠是生活中常见的盐,下列说法错误的是()A.发酵粉中含有碳酸氢钠,能使焙制出的糕点疏松多孔B.干粉灭火器中含有碳酸氢钠,可用来扑灭油、气燃烧引起的火灾C.碳酸氢钠和柠檬酸、水等混合可制成汽水D.碳酸氢钠不能用作治疗胃酸过多的药剂4.(A)小明发现菜地里许多植物出现了倒伏现象,并伴有叶色发黄、植株矮小的现象。

请你帮他选出一种复合肥料()A.NH4Cl B.CO(NH2)2C.KNO3D.KCl5.(A)下列物质难溶于水的是()A.NaCl B.CaCO3C.NaOH D.Na2CO36.(A)氯化钠是一种重要的化工原料。

下列有关说法不正确的是 ( ) A.氯化钠俗称食盐 B.氯化钠中钠元素的化合价为+l价C.氯化钠能和硝酸钾反应 D.生理盐水是0.9%的氯化钠溶液7.(A)烟台市“农博园”不仅是农业高新技术示范和推广基地,也是一个观光休闲的生态农业园区。

下列一些生产思路你认为“农博园”不宜采用的是()A.将农家肥料与化学肥料配合使用,以提高产量和效益B.给大棚中的蔬菜施加适量的CO2,以促进光合作用‘C.将种植、养殖和制沼气相结合,既可以改善环境,又可以提高农,畜牧业的产量D.将硝酸铵与熟石灰等碱性物质混合施用,既给农作物提供了营养元素,同时又可降低土壤的酸性8.(A)《三国演义》中有这样一个故事:诸葛亮率领的汉军误饮了“哑泉”。

哑泉,“人若饮之,则不能言,不过旬日必死”。

后来,汉军将士经地方隐士指点,饮了万安溪的“安乐泉”水方才转危为安。

人教版九年级化学下册第十一单元评价检测

人教版九年级化学下册第十一单元评价检测

单元评价检测(四)第十一单元盐化肥(45分钟 100分)可能用到的相对原子质量:H—1 O—16 Mg—24 Cl—35.5 Ca —40一、选择题(本题包括10小题,每小题3分,共30分,每小题只有一个选项符合题意)1.(2010·成都中考)下列几组固体物质,仅从外观不易区别的是( )A.铁丝和铜丝B.氯化钠和碳酸钠C.氯酸钾和高锰酸钾D.硝酸铵和磷矿粉【解析】选B。

这四组物质中氯化钠和碳酸钠颜色相同,都是白色固体,仅靠外观难以区分。

2.下列关于物质用途的描述不正确的是( )A.食盐可用作调味品B.熟石灰可用于改良碱性土壤C.干冰可用于人工降雨D.盐酸可用于金属除锈【解析】选B。

熟石灰是Ca(OH)2的俗称,属于碱类,显碱性,能改良酸性土壤,不能改良碱性土壤。

3.如图是某菜农使用的化肥包装袋上的部分说明,该化肥属于( )A.氮肥B.磷肥C.钾肥D.复合肥料【解析】选D。

磷酸二氢铵中同时含有N、P两种元素,所以为复合肥料。

4.下列各组物质中能相互反应且反应类型属于复分解反应的是( ) A.锌和稀盐酸B.二氧化碳和水C.氯化钠溶液和硝酸钾溶液D.氢氧化钠和稀硫酸【解析】选D。

Zn和稀盐酸反应生成ZnCl2和H2,是置换反应;CO2和H2O反应生成H2CO3,是化合反应;NaCl和KNO3不反应,因为没有气体或沉淀或水产生,不符合复分解反应发生的条件;NaOH和H2SO4反应生成Na2SO4和H2O,属于复分解反应。

5.要除去氯化钙中的少量盐酸,可加入过量的下列物质,其中最合理的是( )A.CaOB.Ca(OH)2C.CaCO3D.AgNO3【解析】选C。

要除去盐酸,所选试剂应满足以下几点:与CaCl2溶液不反应,与盐酸反应,但生成物不能与CaCl2反应,且易与CaCl2分离。

为了除尽盐酸,所用试剂需过量,而且过量的物质要易与CaCl2分离。

依题意分析可知,CaCO3较符合,能与盐酸反应,生成物为CaCl2、H2O和CO2,过量的CaCO3不溶于水,易分离。

人教版七年级英语下册第十一单元测试题 (2)

人教版七年级英语下册第十一单元测试题 (2)

Unit 11 How was your school trip?单元检测试题I. 听小对话,选择正确的图片.(5分)I I. 听对话,填入合适的答案。

(5分)( )6. . What did the girl do last night?A. She watched TV.B. She did homework.C. She did housework.( )7 . What did Jim think about his trip?A.Great.B. Boring.C. Terrible.( )8. Why didn't Jenny look well?A. She was ill.B. She was afraid of Maths.C. She went to bed late.( )9 .What did Ricky do yesterday afternoon?A. He went shopping.B. He went boating.C. He went fishing.( )10 . What did Anna buy?A. A shirt.B. A skirt.C. A jumper.III .听第一篇短文,回答第16--20小题。

(5分)( ) 11. Where did Tom work?A. In a school.B. In a post office.C. In a factory.( ) 12. How did Tom send the letters?A. By bus.B. On foot.C. By bike. ( ) 13. What did Tom see when he got to the house?A. A big door.B. A big dog.C. A letter.( ) 14. Did the dog run after Tom?A. No, it didn’t.B. Yes, it did.C. We don’t know. ( ) 15 .. What did the dog come to Tom to do?A. To carry the letter.B. To read the letter.C. To throw the letter.IV. 听短文,完成句子(5分)16.Nancy is a student from ___________.17. She ________________to HaiNan with her boy friend.18.They visited many ________________ in China .19.They also __________lots of sea food there.20.They ______________for two weeks and went back by plane.V. 单项选择(10分)( )21.—These ol d farmers have been to Lond on.—Really? When _____there ?A. do they goB. are they goingC. will they goD. did they go( )22.—How _______ your trip last weekend?— _______ ! It rained all the time, so we had no fun there.A. was;Terribl eB. were;BoringC. is;TerribleD. are;Great ( )23. — Who was your guid e at the Art Museum ?—Miss Yang . She _______ us around the whol e museum for three hours.A. takesB. tookC. showsD. showed( )24.—How was the food there?—It was _______ . I couldn’t stand it.A. awfulB. d eliciousC. cheapD. nice( )25.— I _______ this morning, so I missed the NBA game on TV.—It’s a pity. It’s really _______ .A. got up early; interestedB. had breakfast; boringC. slept late; excitingD. stayed at home; terribl e( )26. —I’m sor ry you have missed the bus. It _______ five minutesago.—What a pity!A. was leavingB. has leftC. leftD. leaves( )27. — Why are you driving so____. Tony? I’m feeling sick.— Sorry, but the train is leaving in 20 minutes. We have to hurry.A.oftenB. fastC. hardD. slowly ( )28 .At about two o’clock yesterday, it ______ very cloudy and we ______ about it would rain.A. gets, worriedB. got, worriedC. gets, worryD. got, worry( )29. I learned _________ about computer at school.A. a lot ofB. lots ofC. a lotD. a few( )30 .Our teacher often _______us to practice speaking after class.A. teachB. taughtC. to teachD. teachesVI. 选词填空(10分)A . Too muchB . farmingC . quite a fewD .stars E.rode a horseF. were interested in G . excellent H . Luckily I .All in allJ . d ark31 . The farmers grew strawberries last year, I learnt a lot about ____________from them.32 . We can see the sun in the daytime, the ____________ at night.33. . He is an ______________ farmer and he taught us how to do farm work.34 . I got up late this morning . ________, Mr Green gave me ride to school.35 . The room was really _________. so it was difficult to take photos.36 . There were too many people and ________ noise there..37 .I have ______________________________ friends at school38 . The man _____________________________ to get here just now(刚才)39 .We ______________________________ the TV play last year.40.____________, you found a good job.VII. 完成对话(10分)Jim:Hi, Sally ! Didn’t you go on the school trip on Sunday ?I didn’t see you.Sally :_41.________________ Jim : Why ?Sally : 42. ______________. Jim: What did you do then ? Sally: In the morning , I cleaned my room and did my housework 43. ____________Jim: Really ? It sounds boring .Sally : 44.___________I went to the movies with my sister in the afternoon . By the way :45. _______________A. the beachB. the mountainC. the museumD. the library( )47. Alice was in the hotel for _____________.A. five daysB. six daysC. a weekD. ten days( )48. Grace went to mountains with her ___________.A. parentsB. classmatesC. cousinsD. friends( )49. Grace saw some __________in the mountains.A. pandasB. tigersC. monkeysD. sheep( )50. How did Ann spend the Earth Hour ?A. She did some readingB. She turned off the lights and slept at homeC. She went to movies with her friendsD. She took a walk with her mother.BJosh and Nicky are best friends, and they stay together almost every day. About a month ago, they had a big fight(打架). It started on a Saturday when Nicky went to Jos h’s house to play computer games. But Josh said he wanted to go and watch his older brother’s soccer game. When Nicky asked if he could come too, Josh said no. Nicky felthurt. He asked why he couldn’t come, and Josh said, “I want to do something without y ou!”If you really have a good time when he’s around, you want to spend all your free time with him. But spending every day with someone can be overwhelming.This is what happened between Josh and Nicky. Even though(虽然)Josh really likes Nicky, he felt that they needed to spend some time apart (分开). This doesn’t mean that there is anything wrong with the friendship(友谊). It just means that the two friends don’t need to spend every minute together.( ) 51. What happened to Josh and Nicky about a month ago?A. They became good friends.B. They had a big fight.C. They began to go out together.D. They started playing computer games together.( )52. What did Josh want to do when Nicky went to his house?A. He wanted to play computer games with Nicky.B. He wanted to go to the movies with his brother.C. He wanted to go and watch his brother’s soccer game.D. He wanted to go and watch a soccer game with his brother. ( )53. Why didn’t Josh want Nicky to go with him?A. Because he wanted to be away from Nicky for a while.B. Because his brother didn’t like Nicky.C. Because Nicky wasn’t good at soccer.D. Because he didn’t want to be Nicky’s friend anymore. ( ) 54. What does the under lined word “overwhelming” mean in Chinese?A. 令人兴奋的B. 奇怪的C. 忙碌的D. 无法承受的( ) 55. What’s the best title for the passage?A. What happened to the friends?B. Friendship can’t be long.C. How to keep your friend away from youD. How to get on well with your friends.C.On July 18th,2012, Mike and his parents went to Qingdao, a city in Shandong for summer vacation. Qingdao is a beautiful city with sea.It was about 12:00 when they arrived there on the first day. They found a hotel and had a short rest. It was really hot and they decided to go to the beach. At about 3:30 pm, they got to the beach. There were many people there. Some were lying on the beach and many children were playing in the water. Mike was playing with them and he was very happy. His parents also felt relaxed. About two hours later, they went back to the hotel.On the second day, it rained all day. Mike visited the history museum with his father and his mother went shopping.On July 20th, they went to Laoshan Mountain in the morning and took a bus home in the afternoon. They were tired but happy.56.Qingdao is one of the most beautiful seaside _______.57.The weather in Qingdao was ___________.58.On the second day The weather there was ________.59.Peopele on the beach were ________.60.On July 20th after climbing Laoshan Moutain , They ___________by bus.Ix 挑战(10分)简单叙述,你在上星期天加入了汉语俱乐部的一些情况。

人教版英语九年级第十一单元检测试题及答案

人教版英语九年级第十一单元检测试题及答案

人教版英语九年级第十一单元检测试题及答案Unit 11 单元检测一、单项填空26.I hear that Susan has finished her ________ most successful book.A./B.theC.aD.its27.—Could you tell me ________?—Sure.Go straight along the street and turn right at the first crossing.A.where is the post officeB.how can I get to the post officeC.how I can get to the post officeD.when the bus leaves28.Could you show me ________ shoes?A.how to mendB.what to buyC.to mend howD.to buy what29.There’s a bookstore ________ the fifth floor.A.onB.atC.inD.about30.He said that light ________ much faster than sound.A.traveledB.will travelC.travelsD.has traveled31.Go ________ the bus station and turn left onto Renmin Road.A.passB.passedC.passingD.past32.The street is ________ quiet at this time in the evening.A.muchB.kind ofC.kindD.kinds of33.—Look!A blind man is in the middle of the street.It’s too danger ous.—Let’s go and help him go ________ the road.A.throughB.alongC.acrossD.over34.—Can I ________ two books together?—Of course you can.But you can only ________ them for one week.A.lend; keepB.lend; borrowC.borrow; keepD.borrow; borrow35.Could you please ________ the story?A.tell meB.to tell meC.told meD.telling me36.Some kids ________ watching TV ________ playing outside.A.prefer; toB.would rather; thanC.like; betterD.like; less37.They talked in a very low voice ________ not to be heard.A.so thatB.in order thatC.so orderD.in order38.His car is ________ mine, but it drives ________ mine.A.not so new as; as fast asB.as new as; as fast asC.not so new as; not so fast asD.as new as; as faster as39.I live next to Huapu Supermarket.It’s very ________.A.beautifulB.cleanC.deliciousD.convenient40.________ important ________ us to learn from each other and help each other.A.This’s; forB.That’s; ofC.It’s; forD.It’s; of41.Is your son old enough to ________ himself?A.wearB.dressC.put onD.have on42.It’s a good game ________.A.to playingB.to be playedC.to playD.to plays43.When I got to the cinema, they ________ already.A.had arrivedB.arriveC.are arrivingD.arrived44.He likes to ________ his classmates after school.A.hang offB.hang outC.hang off withD.hang out with45.The staff ________ there and wait.A.goesB.goC.wentD.going二、完形填空通读下面短文,掌握其大意,然后在各小题所给的四个选项中,选出一个最佳答案。

新人教版八年级物理第十一章--功和机械能单元检测题及答案

新人教版八年级物理第十一章--功和机械能单元检测题及答案

第 1 页第十一章 功和机械能一、选择题(第1~9题为单选题,每小题2分;第10~11题为多选题,每小题3分。

共24分) 1.下列实例中,有力对物体做功的是 ( )A .跳水运动员从跳台跳下B .背着书包站在水平路面上不动C .举重运动员举起杠铃停在空中D .小球在光滑水平面上滚动2.在水平地面上,用20N 的水平拉力拉重为50N 的小车,使小车沿水平方向前进了10m ,此过程中拉力所做的功是 ( )A .200JB .500JC .1000JD .0J3.甲机械比乙机械的功率大,表示两机械在做功时 ( ) A .甲做功多 B .甲更省力 C .甲做功快 D .甲用时少4.我国在太空航天领域处于世界领先水平,如图所示,是我国近期发射的一颗北斗导航卫星,它沿椭圆轨道绕地球运行,离地球最近的一点叫近地点,最远的一点叫远地点,在大气层外运行,不受空气阻力。

关于此人造卫星的运行下列说法正确的是 ( )A .卫星从远地点运行到近地点,势能减小,动能增大,速度增大B .卫星从远地点运行到近地点,势能减小,动能减小,速度减小C .卫星从近地点运行到远地点,势能增大,动能增大,速度增大D .卫星从近地点运行到远地点,势能增大,动能增大,速度减小5.如图所示,用大小相等的拉力F ,分别沿光滑的斜面和粗糙的水平面拉木箱,在力的作用下移动的距离S AB =S CD ,比较两种情况下拉力F 所做的功及其功率 ( )A .AB 段做功较多 B .AB 段及CD 段做的功一样多C .CD 段做功较多 D .AB 段的功率比CD 段的功率大6.下列关于功和能的说法正确的是 ( ) A .被拉开的弹弓具有弹性势能 B .用力推车而车未动,因为用了力所以推力做了功 C .速度小的物体动能一定小 D .高山上的一块大石头稳稳地静止在那儿没有重力势能7.假期里小明一家乘飞机去外地旅游,飞机加速向上运动的过程中,关于小明的能量分析,下列说法正确的是 ( )A .动能增加,重力势能不变B .动能不变,重力势能增加C .机械能总量不变D .机械能总量增加8.爷爷及小丽进行爬楼比赛,他们都从1楼上到6楼。

九年级英语新目标Unit 11 检测试题

九年级英语新目标Unit 11 检测试题

2010—2011学年度九年级新目标英语单元检测题Unit 11Class NameI. 单项选择( ) 1. Long, long ago people didn’t know that the earth _______ around the sun.A. movesB. movedC. was movingD. move( ) 2. It’s nice _______ me out when I’m in trouble.A. for you to helpB. of you to helpC. for you helpingD. of you helping ( ) 3.The air in the countryside is ______. So many people from the city go there on weekend.A. softB. prettyC. freshD. delicious( ) 4. —Can you tell me ______ I can get a storybook?—Sure. There’s a bookstore on Dongfang Street.A. thatB. whichC. whereD. whether( ) 5.—Excuse me, could you please show me how to use this MP4 player?—_______A. Certainly! It’s here.B. Yes, you can.C. Sure, with pleasure.D. Not at all.( ) 6. I really don't know if she it when she .A. will find, arrivesB. will find, will arriveC. finds, arrivesD. finds, will arrive( ) 7. —Bob, may I ______ your MP4 player?—Sure. But you’d better not ______ it to others.A. lend, borrowB. lend, lendC. borrow, borrowD. borrow, lend ( ) 8. —Can you ______ your little brother? I’m busy now.—OK. I’ll do it right now.A. wearB. put onC. dressD. in( ) 9. The teacher told us on the road.A. don't playB. not playC. not to playD. be not play( ) 10. Nelson wanted to know .A. when would the meeting beginB. when will the meeting beginC. when the meeting would beginD. when the meeting will begin( ) 11. The trip made us .A. pleasant, pleasedB. pleased, pleasantC. pleasant, pleasantD. pleased, pleased( ) 12. It's difficult to live in a foreign country, if you don't speak the language.A. exactlyB. naturallyC. usuallyD. especially( ) 13. be late, children got up very early.A. ForB. In order toC. In order to notD. In order not to ( ) 14. We all how he had made such great progress in a short time.A. believedB. thoughtC. decidedD. wondered( ) 15. It’s not easy for trail walkers to finish walking a ______ trail within 48 hours.A. 100-kilometreB. 100-kilometresC. 100-kilometresD. 100-kilometres’Ⅱ. 完形填空Sometimes it is difficult to ask for help. We 1___ to solve problems by ourselves. Sometimeswe get 2___ from our family or many friends. However, sometimes we have so many problems at once, or we may feel 3 dicussing the problems with our friends or family.For most of us, it is hard to ask help from people we don’t know. Asking for help may make you feel 4___. It may stop you from asking for help. Just remember that 5___ help is a very common thing. We all have to ask for help when we are in 6___.Another barrier(障碍)is when we 7___ about what people would think or what would happen if classmates found out. It is 8___ that many peope feel nervous about it. However, we sometimes need to ask for help from people 9___ can help us solve our problems, such as doctors, lawyers ,or teachers.Whatever you decide to do, you should try to make yourself feel better instead of making feel 10___. You should ask different kinds of people for help with different kinds of problems.( ) 1. A. hate B. agree C. prefer D. refuse( ) 2. A. money B. help C. fun D. time( ) 3. A. dangerous B. impolite C. uncomfortable D. strange ( ) 4. A. angry B. relaxed C. shy D. excited ( ) 5. A. needing B. offering C. giving D. taking( ) 6. A. trouble B. silence C. challenge D. agreement ( ) 7. A. hear B. talk C. ask D. worry( ) 8. A. right B. true C. easy D. fresh( ) 9. A. who B. where C. when D. which( ) 10. A. excited B. stressed C. intrested D. terrifiedⅢ.阅读理解At the moment, it may be difficult to imagine, but many people believe that, by the year 2100, we will live on the planet Mars. Our own planet, Earth, is becoming more and more crowded and polluted. Luckily, we can start again and build a better world on Mars. Here is what life could be like.First of all, transport should be much better. At present, our spaceships are too slow to carry large numbers of people to Mars-it takes months. However, by 2100, spaceship can travel at half the speed of light. It might take us two or three days to get to Mars!Secondly, humans need food, water and air to live. Scientists should be able to develop plants that can be grown on Mars. These plants will produce the food and air that we need. However, can these plants produce water for us? There is no answer now.There is problem for us to live on Mars. Mars makes us much less weight that the Earth does. This will be dangerous because we could easily jump too high and fly slowly away into space. To prevent this, humans on Mars have to wear special shoes to make themselves heavier.Life on Mars will be better than that on Earth in many ways. People will have more space. Living in a large building with only 10 bedrooms is highly possible. Many people believe that robot will do most of our work, so we have more time for our hobbies.There will probably be no school on Mars. Every student will have a computer at home which is connected to the internet. They can study, do their homework and take exams in online schools. Each student will also have their own online teacher called “e-teacher”.However, in some ways, life on Mars may not be better than that on the earth today. Food will not be the same——meals will probably be in the form of pills and will not be as delicious as they are today. Also, space travel will make many people feel ill. The spaceship will travel fast but the 九年级英语第十一单元练习题第2页(共4页)journey to Mars will probably be very uncomfortable.()1. According to the text, by the year 2100, some of us will possibly live .A. on MarsB. on the moonC. under the seaD. in the sun ()2. So far, how long will it take us from the earth to Mars by spaceship?A. Two or three days.B. A few months.C. A few days.D. A few years.()3. In the future, the students on Mars .A. will study mainly through the internetB. will study mainly in a classroomC. will meet each other face to face every dayD. needn't study at all()4. Life on Mars will be better than life on the earth because .A. Only a few people will live thereB. there will be more space and less work to doC. there will be much delicious foodD. all students don't need to do any homework()5. According to the text, which of the following about Mars is NOT true?A. Transport will be much better and faster.B. We need to develop a special plant which can produce water.C. On Mars, we can jump higher than on the earth.D. Food will be much more delicious.Ⅳ. 用方框内短语的适当形式填空,使句子通顺、完整。

人教版初二数学上册《第十一章单元试卷》(详尽答案版)

人教版初二数学上册《第十一章单元试卷》(详尽答案版)

人教版初二数学上册第十一章章检测题一、选择题1.下列图形中具有稳定性的是()A B C D2.从n边形的一个顶点作对角线,把这个n边形分成三角形的个数是()A.nB.n-1C.n-2D.n-33.下列四个图形中,线段BE是△ABC的高的是()4.下列说法中,正确的是()A.三角形的内角中最多有一个锐角B.三角形的内角中最多有两个锐角C.三角形的内角中最多有一个直角D.三角形的内角都大于60°5.已知正n边形的一个内角为135°,则边数n的值是()A.6B.7C.8D.106.已知三角形两边的长分别是4和10,则此三角形第三边的长可能是()A.5B.6C.11D.167.若一个三角形的三个内角的度数比为3∶4∶7,则这个三角形为()A.直角三角形B.锐角三角形C.钝角三角形D.等边三角形图11-98.如图11-9所示,已知AB∥CD,∠A=50°,∠C=∠E,则∠C等于()A.20°B.25°C.30°D.40°9.如图11-10所示,在△ABC中,∠C=90°,EF∥AB,∠CEF=50°,则∠B的度数为()A.50°B.60°C.30°D.40°图11-10图11-1110.将一副三角尺按如图11-11所示的方式摆放在一起,则∠1的度数是()A.55°B.65°C.75°D.85°二、填空题11.五边形的内角和的度数是.12.若正n边形的一个外角的度数为60°,则n的值为.13.如图11-12所示,BD=DE=EF=FC,那么AE是的中线.图11-12图11-1314.图11-13为2012年伦敦奥运会纪念币的图案,其形状近似看作正七边形,则一个内角为°.(不取近似值)15.如果三角形的两条边长分别为23cm和10cm,第三边与其中一边的长相等,那么第三边的长为cm.16.如图11-14所示,小明在操场上从点A出发,沿直线前进10m后向左转40°,再沿直线前进10m后,又向左转40°,照这样走下去,他第一次回到出发地点A时,一共走了m.图11-14图11-1517.如图11-15所示,若l1∥l2,则∠1= °.18.如图11-16所示,FE∥ON,OE平分∠MON,∠E=28°,则∠MFE= °.图11-16图11-1719.如图11-17所示,在Rt△ABC中,∠A=90°.小华用剪刀沿DE剪去∠A,得到一个四边形,则∠1+∠2= °.20.一个多边形的内角与外角的和是1440°,那么这个多边形是边形.三、解答题(共60分)21.若一个多边形的内角和比外角和多540°,求这个多边形的边数.22.如果一个多边形的所有内角从小到大排列起来,依次增加的度数恰好相同,设最小角为100°,最大角为140°,那么这个多边形的边数为多少?23.如图11-18所示,在△ABC中,∠BAC=30°,∠C=70°,AF平分∠BAC,BF平分∠CBE,AF交BC于点D,求∠BDA和∠F的度数.图11-1824.如图11-19所示,五边形ABCDE中,∠A=135°,AE⊥ED,AB∥CD,∠B=∠D,试求∠C的度数.图11-1925.如图11-20所示,已知∠1=∠2,∠3=∠4,∠C=32°,∠D=28°,求∠P的度数.图11-2026.(1)如图11-21①所示,若AB∥CD,点P在AB,CD外部,则有∠B=∠BOD.又因∠BOD是△POD的外角,故∠BOD=∠P+∠D,得∠P=∠B-∠D.将点P移到AB,CD内部,如图11-21②,以上结论是否成立?若成立,说明理由;若不成立,则∠BPD,∠B,∠D之间有何数量关系?并证明你的结论;(2)在图11-21②中,将直线AB绕点B逆时针方向旋转一定角度交直线CD于点Q,如图11-21③,则∠BPD,∠B,∠D,∠BQD之间有何数量关系?(不需证明)(3)根据(2)的结论,求图11-21④中∠A+∠B+∠C+∠D+∠E+∠F的度数.图11-21参考答案1.C解析:把多边形分割成三角形,多边形的形状不会改变,因而具有稳定性的是C.2.C解析:从n边形的一个顶点作对角线,把这个n边形分成的三角形有(n-2)个.3.D解析:根据高的画法知,过点B作AC边上的垂线,垂足为点E,其中线段BE是△ABC的高.4.C解析:若一个三角形有两个直角,则这个三角形的内角和大于180°,这与三角形内角和定理矛盾,所以一个三角形最多有一个直角.5.C解析:∵正n边形的一个内角为135°,∴正n边形的一个外角为180°-135°=45°,n=360°÷45°=8.6.C解析:设此三角形第三边的长为x,则10-4<x<10+4,即6<x<14,四个选项中只有11符合条件.7.A解析:设一份为k°,则三个内角的度数分别为3k°,4k°,7k°,则3k°+4k°+7k°=180°,解得7k°=90°,∴这个三角形是直角三角形.8.B解析:∵AB∥CD,∠A=50°,∴∠A=∠AOC.又∵∠C=∠E,∠AOC=∠C+∠E,∴∠C=50°÷2=25°.9.D解析:∵∠C=90°,∴∠CFE=90°-∠CEF=40°.又∵EF∥AB,∴∠B=∠CFE=40°.10.C解析:一副三角尺所对应的角度是60°,45°,30°,90°,由图可知∠1所在的三角形另外两个角的度数是60°,90°-45°=45°,所以∠1=180°-60°-45°=75°.11.540°解析:五边形的内角和的度数为(5-2)×180°=3×180°=540°.12.6解析:∵正n边形的一个外角的度数为60°,∴n=360°÷60°=6.13.△ABC和△ADF 解析:∵BD=DE=EF=FC,∴点E是BC和DF的中点,∴AE是△ABC和△ADF的中线.14.错误!未找到引用源。

三年级语文上册 第11单元 奇思妙想达标检测卷(B卷) 长版

三年级语文上册 第11单元 奇思妙想达标检测卷(B卷) 长版

第十一单元 达标测试卷奇思妙想时间:80分钟 满分:100分基础达标 我会做(46分)一、汉字城堡(14分)1.我会准确写出加点字的读音。

(4分)汲.水( ) 赞.赏( ) 咆哮.( ) 停歇.( ) 克.服( ) 火柴.( ) 桅杆.( ) 商量.( ) 2.我会辨字组词。

(6分)⎩⎪⎨⎪⎧报( )服( ) ⎩⎪⎨⎪⎧很( )狠( ) ⎩⎪⎨⎪⎧泡( )炮( )⎩⎪⎨⎪⎧潮( )嘲( ) ⎩⎪⎨⎪⎧狂( )汪( ) ⎩⎪⎨⎪⎧逃( )桃( ) 3.我会用“——”画出恰当的字。

(4分)(署 暑)名 (恳 肯)求 阻(栏 拦) (建 见)议(催 摧)毁 (烦 繁)重 凶(狠 恨) 监(劳 牢)二、词语广场(22分)4.我会正确书写词语。

(10分)zh ěng q í hu ǒ y ào zh ǔn b èi ji à sh ǐji ào h ǎn d ěng d ài ch áod ài y án sh íji àn zh ù b ǐ s ài5.我会把下面的四字词语补充完整。

(6分)( )风暴( ) ( )郎( )女 大浪( )( )( )( )无事 ( )( )口水毫( )在( )6.我会填上合适的词语。

(6分)( )的天地 ( )的活动 ( )的魔王( )的公主 ( )的阳光 ( )的老海龟三、句子花园(10分)7.根据“便宜”的不同意思造两个句子。

(1)价钱低:_________________________________________________(2)不应得的利益:___________________________________________8.渔夫把老海龟翻了个四脚朝天。

(改为“被”字句)_________________________________________________________9.这么美的花,我们应该爱护。

第十一章 三角形 单元检测

第十一章  三角形   单元检测

第十一章 三角形 (时间:90分钟 满分:120分)一、选择题(每小题3分,共36分)1. 下列哪组数据能构成三角形A. 1cm,2cm,3cmB. 2cm,3cm,4cmC.4cm,4cm,9cmD. 1cm,2cm, 4cm2.有4根铁条,它们的长别题是14cm,12cm,10cm,3 选择其中三根组成一个三角形,不同的选法有A.1 种B. 2 种C. 3 种D.4种3.如图所示,AD 是几个三角形的高?A. 4B. 5C. 6D. 74.下列说法:①等边三角是等腰三角形; ②三角形外角和大于这个三角形内角和;③四边形的内角最多可以有三个钝角;④多边形的对角线有7条。

其中正确的个数是A.1B. 2C. 3D. 45.如图所示,BD 、CE 是△ABC 的高,则下列错误的结论是A. ∠1=∠4 B .∠1+∠2+∠3+4=1800C. ∠BFC+∠1+∠4=1800D.∠BFC=1800-∠A6.如图所示,AD 是△ABC 的中线,已知△ABD 比△ACD 的周长大6,则AB 与AC 的差为A. 12cmB. 6cmC.3cmD. 2cm7.一个三角形至少有 A.一个锐角 B.两个锐角 C 一个钝角 D.一个直角8.具备下列条件的三角形ABC 中,不为直角三角的是A. ∠A+∠B=∠CB. ∠A=∠B=21∠C C. ∠A=900-∠B D. ∠A-∠B =9009.等腰三角形两条边的长分别为5和2,那么它的周长是A.12B. 9C. 9 或12D. 无法确定10.一个多边形的每个内角都相等,每个内角与相邻的外角的差为1000,那么这个多边形是A.七边形B. 八边形C. 九边形D. 十边形11.三角形的两边长分别为2和5,则三角形的周长L 的取值范围是3﹤L ﹤7 B. 9﹤L ﹤12 C. 4﹤L ﹤14 D.无法确定12.有两个正多边形,它们的边数之比为1:2,内角和之比为3:8,则这两个多边形的边数之和B为( )A. 12B. 15C. 18D. 21二、填空题(每小题3分,共24分)13.如图所示,一共有 个三角形,从大小判断,图中青蛙可以落在n 个三角形内, 则n=14.铁栅门和多功能挂衣架能够伸缩自如,是利用了四边形的 。

七下英语单元评价检测011

七下英语单元评价检测011

七年级英语下册单元评价检测(十一)Unit 11 How was your school trip?听力部分(20分)Ⅰ.听句子。

选出你所听到的单词或短语。

(5分)1.A.tape B.trip C.train2.A.1eft B.give C.gift3.A.drivers B.visitors C.workers4.A.prize B.piece C.price5.A.school trip B.good idea C.day offⅡ.听对话。

选择与对话内容相符的图片。

(5分)Ⅲ.听对话,根据对话内容选择正确答案。

(5分)听第一段对话,完成第l—3小题。

1.How was the girl’s school trip?A.It was borin9. B.It was great. C.It was terrible.2.Were there any lions in the zoo?A.N0,there weren’t. B.Yes,there were. C.We don't know.3.What else did the girl do?A.She saw some monkeys.B.She went to the aquarium.C.She hung out with her friends.听第二段对话,完成第4—5小题。

4.Who did the girl meet?A.Jackie Chan. B.Andy Lau. C.Jet Li.5.Did the girl get his autograph?A.Yes,she does. B.Yes,she did. C.N0.she didn't.Ⅳ.听短文,在横线上填入正确的单词(每空一词)。

(5分)I had a lot of fun yesterday.In the mornin9,I(1) at home and watched TV,and then I(2) out with my friends.In the afternoon my father put some of his old things out in the yard and had a(3) sale!1 went to the aquarium to watch the shark show.Some also watched the shark show there.When I left,I bought some souvenirs of the aquarium.(5) ,it didn’t start raining until I got home.笔试部分(100分)1.选择填空。

人教版九年级下册化学同步训练第十一单元测评(B)(含答案)

人教版九年级下册化学同步训练第十一单元测评(B)(含答案)

第十一单元测评(B)(时间:45分钟满分:100分)可能用到的相对原子质量:H 1 C 12N 14O 16Na 23Cl 35.5Ag 108一、快乐点击(本大题共10小题,每小题3分,共30分。

下列每小题给出的四个选项中,只有一项是符合题目要求的)1.下列物质中属于盐的是()A.熟石灰B.碳酸钾C.乙醇D.烧碱2.氮肥能促进作物的茎、叶生长茂盛,叶色浓绿;钾肥能促进作物茎秆健壮,增强抗倒伏能力;磷肥能促进作物根系发达。

小李家的庄稼茎秆细小,出现倒伏现象,则小李家庄稼可选择施用的化肥是()A.碳铵(NH4HCO3)B.磷矿粉[Ca3(PO4)2]C.磷酸氢二铵[(NH4)2HPO4]D.氯化钾(KCl)3.实验室有四瓶失去标签的无色溶液,分别是碳酸钠溶液、氯化钡溶液、硫酸钠溶液和稀盐酸中的一种。

为了鉴别它们,将上述溶液分别标记为甲、乙、丙、丁,做如下实验:各取少许,将甲分别滴加到另外三种溶液中,观察到乙和丁中产生白色沉淀,丙中无明显现象。

据此可判断甲是()A.碳酸钠溶液B.氯化钡溶液C.硫酸钠溶液D.稀盐酸4.下列物质能大量共存于pH=13的水溶液中的是()A.硝酸、氯化钠B.硝酸钾、氯化铜C.碳酸铵、熟石灰D.硝酸钠、氯化钡5.粗盐中难溶性杂质的去除过程中,涉及称量、溶解、过滤、蒸发等过程。

下列说法不正确的是()A.称量时粗盐放在天平左盘的称量纸上B.粗盐溶解时,要用玻璃棒不断搅拌C.蒸发时,在恰好蒸干时停止加热D.过滤时漏斗下端尖嘴处紧靠烧杯内壁6.下列各组变化中,每个转化在一定条件下均能一步实现的是()A.①④B.①②④C.①③④D.②③7.下列各组物质混合后,不产生沉淀或气体,且能得到无色溶液的是()A.氢氧化钡溶液和稀硫酸B.氧化铜粉末和稀硝酸C.石灰水和稀盐酸D.氯化铁溶液和烧碱溶液8.用括号内的试剂除去下列物质中的杂质,其中不正确的是()A.氢氧化钠溶液中混有的碳酸钠(石灰水)B.硝酸铜溶液中混有的硝酸银(铜粉)C.二氧化碳中混有的氯化氢气体(氢氧化钠溶液)D.氧气中混有的水蒸气(浓硫酸)9.在氢氧化钠溶液中加入盐酸,至恰好完全反应,反应的微观示意图如下,下列有关认识错误的是()A.反应结束时溶液的pH=7B.反应前后元素的种类没有变化C.酸与碱的反应属于复分解反应D.该微观图还可说明所有物质都是由分子构成的10.某白色固体A,含有K2SO4、NaOH、CaCO3、BaCl2中的一种或几种,取少量A进行如下实验。

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九年级化学第十一单元测试卷相对原子质量:N:14 O:16 H:1 C:12 Cl:35.5 Ca:40 Na:23 一. 我会选择(每题只有一个正确答案) 1. 下列物质,属于盐类的一组是( ) A. 食盐、碳酸氢钠、碱式碳酸铜 B. 食醋、生石灰、氢氧化钙 C. 纯碱、烧碱、干冰D. 氯化钡、硫酸钾、蔗糖2. 配制番茄的无土栽培营养液要用到KNO 3做肥料,化肥KNO 3是一种( ) A. 复合肥料B. 磷肥C. 钾肥D. 氮肥3. 可溶性的钡盐有毒。

张进误食了BaCl 2,则应立即服用的解毒药剂是( ) A. 糖水 B. 碳酸钠溶液 C. 食盐水 D. 硫酸镁溶液4. 实验室有两瓶无色溶液的标签被腐蚀,只知道其中一瓶是氢氧化钙,另一瓶是硫酸,要鉴别它们不可选用的试剂为( ) A. CO 2B. BaCl 2C. Na CO 23D. HCl5. 下列各组物质在溶液中能大量共存的是( ) A. NaCl AgNO 、3 B. KOH H SO 、24 C. Na CO HNO 233、D. KNO HCl 3、6. 蒸馒头时某同学为了探究食用碱的主要成分,向其中加入了稀盐酸,发现产生了一种能使澄清的石灰水变浑浊的气体,则食用碱中可能含有( ) A. H SO 24B. Na CO 23C. NaOHD. CO 27. 下列物质间不能发生反应的是( )A. 氢氧化钠溶液和硫酸溶液B. 碳酸钠溶液和氢氧化钙溶液C. 铜和硝酸银溶液D. 氢氧化钠溶液和氯化钾溶液8. 将下列试剂分别滴入氢氧化钠溶液、饱和石灰水和稀硫酸中,能产生三种不同现象的是( )A. 硫酸钠溶液B. 氯化钠溶液C. 紫色石蕊试剂D. 碳酸钠溶液 9. 能用来鉴别稀盐酸、纯水、澄清的石灰水三瓶无色液体的试剂是( ) A. 酚酞试液 B. 稀硝酸 C. 碳酸钠溶液 D. 硫酸钠溶液 10. 要除去稀硝酸中的杂质稀盐酸,可加入适量的( ) A. Na CO 23B. KNO 3C. NaOHD. AgNO 311. 要除去粗盐中的不溶性杂质,可采用的方法是( ) A. 溶解、蒸馏 B. 溶解、过滤、蒸发 C. 加酸溶解、蒸发 D. 加吸附剂、过滤 12. 下列实验方案中,能达到预期目的的是( ) A. 用NaOH 溶液除去CO 2中混有的HCl 气体B. 用点燃的方法除去CO 中混有的少量CO 2C. 用稀盐酸除去热水瓶胆壁上的水垢(主要成分是碳酸钙和氢氧化镁)D. 用BaCl 2溶液除去KNO 3溶液中混有的少量K SO 24,得到纯净的KNO 3溶液 13. 只需加水就可将四种白色固体鉴别出来:(1)NaCl 、(2)BaCl 2、(3)CuSO 4、(4)Na SO 24,正确的鉴别顺序是( )A. (1)(3)(4)(2)B. (2)(3)(4)(1)C. (3)(2)(4)(1)D. (2)(4)(1)(3)14. 用石灰石、水、纯碱为原料制取烧碱,所发生的反应都不属于( ) A. 化合反应 B. 分解反应 C. 置换反应 D. 复分解反应 15. 下列各组物质的稀溶液中,不用其他试剂就能鉴别出来的是( )A. Na CO KCl HNO Na SO 23324、、、B. K CO H SO HNO BaCl 232432、、、C. HCl AgNO HNO NaCl 、、、33D. Na SO NaOH CuSO NaCl 244、、、 16. 除去下列杂质,所用试剂和方法不正确的是( ) 物质 杂质 除杂试剂和方法 A. K O H K CO 23 ()Ca OH 2溶液、过滤 B. KNO 3 K SO 24()Ba NO 32溶液、过滤C. H SO 24 HClAgNO 3溶液、过滤D. CuOKNO 3水、过滤17. 有四瓶无色溶液,它们分别是:(1)稀盐酸、(2)稀硫酸、(3)NaOH 溶液、(4)Na SO 24溶液。

某实验小组分别对四种溶液进行了一系列实验,结果如下表:甲 乙 丙 丁 加入无色酚酞溶液 不变色 变红不变色 不变色 加入BaCl 2溶液 白色沉淀 无明显现象 白色沉淀 无明显现象 加入Na CO 23溶液无明显现象无明显现象产生无色气体产生无色气体则对应甲、乙、丙、丁顺序的四种物质是( )A. (2)(3)(4)(1)B. (4)(3)(2)(1)C. (3)(4)(1)(2)D. (1)(2)(4)(3)18. 某同学对一种无色溶液的成分进行探究:他先取出少量样品,向样品中加入稀盐酸,没有任何现象;再向溶液中加入了少量的BaCl 2溶液,结果产生了白色沉淀,由此他能得出的结论是( ) A. 一定含有Ag +B. 一定含有SO 42-C. 一定含有Ag +或SO 42-D. 一定含有CO 32-19. 在盛有AgNO 3和()Mg NO 32混合溶液的试管中,加入一定量的锌粉充分反应,试管底部有少量固体存在。

过滤,向滤液中加稀盐酸,产生白色沉淀。

滤渣是( ) A. Mg B. Ag C. Zn 和Ag D. Zn 和Mg 20. Na CO 23俗称纯碱,是因为其溶液显碱性。

在实验室里,下列各组:(1)NaOH 、Na CO NaCl 23、;(2)Na CO NaCl HCl 23、、;(3)()H SO NaOH Ca OH 242、、;(4)HCl Na CO NaOH 、、23。

只用酚酞试液就能鉴别出来的有( ) A. (1)(2)B. (3)(4)C. (1)(3)D. (2)(4)二. 我会填空。

21. 有下列四组物质,每组中均有一种与其他物质所属类别不同,请在下面的横线上填写出这种物质的名称:①食醋、牛奶、加碘盐、水 (1)______________; ②冰、干冰、氧化铁、金刚石 (2)______________; ③氯化钠、硫酸铜、盐酸、硝酸铝 (3)______________; ④纯碱、烧碱、碳酸钙、氯化亚铁 (4)______________。

22. 在H 、O 、C 、Cl 、Na 、Ca 六种元素中,选择适当元素,组成符合下列要求的物质,将其化学式填入空格中。

(1)人工降雨的氧化物____________________;(2)可用于金属表面除锈的酸____________________; (3)可改良酸性土壤的碱____________________;(4)可做干燥剂的碱性氧化物____________________;(5)可做建筑材料的盐____________________;(6)可消除公路积雪的盐____________________。

23. 某学习小组,欲在不使用酸碱指示剂的条件下,通过添加试剂的方法将含有硝酸的硝酸钙溶液变为中性。

甲同学提出选用石灰石粉末,乙同学提出选用澄清的石灰水。

比较甲、乙两同学所选试剂,你认为_____________同学的选择不可行;理由是:该试剂虽然能除去原混合液中的硝酸,但__________________________。

24. 化肥的使用虽然能大大提高农作物的产量,但是也带来了较为严重的环境污染,因而我国大力提倡使用农家肥。

草木灰就是一种常见的农家肥料,它的主要成分是一种含钾的盐。

取一些草木灰加到盐酸里,产生的气体可使澄清的石灰水变浑浊,则草木灰的主要成分是_____________,有关反应的化学方程式为:__________________________。

25. 下列物质①熟石灰、②碳酸钠、③氯化钠、④碳酸钙、⑤碳酸氢钠、⑥氢氧化铝、⑦稀盐酸等,在生产生活中有广泛用途,请按下列要求填空(填序号)。

(1)农业中用来降低土壤酸性,改良土壤结构的是_____________;(2)可治疗胃酸过多的是_____________;(3)用于造纸、玻璃、印染、洗涤剂的是_____________;(4)用于维持人体正常生理活动的是_____________;(5)天安门前的华表,其主要成分是_____________。

26. 某校化学兴趣小组对附近一化工厂排出的污水进行监测。

发现污水中含某些金属离子对水质和环境造成了严重污染。

他们曾对该厂排出的污水取样、过滤,对滤液进行了多次检测,其中有三次检测结果发现有如下物质:①CuCl FeCl MgSO H SO23424、、、;②()CuSO MgCl Fe SO HCl42243、、、;③CuSO AgNO FeCl HCl433、、、。

试回答:(1)三次检测的结果中第________次检测的结果不正确。

(2)研究小组根据检测结果,向化工厂提出建议:用一种含钠离子的化合物来处理污水,就可以同时除去检测出的金属离子。

这种化合物是_____________。

(3)在检测时,为了确定滤液中是否存在硫酸根离子和氯离子,同学们将滤液酸化后,首先向滤液中加入过量的_____________溶液,将反应后的混合物过滤,再向得到的滤液中加入_____________溶液。

27. 程伟同学在家做了一个趣味实验:取一粒不与盐酸反应的小球,放入盛有稀盐酸的玻璃杯中,小球悬浮于液体中。

然后将碾碎的鸡蛋壳投入杯中。

请你猜猜他观察到的现象是:__________________________,其原因是__________________________。

28. 实验室中两个试剂瓶的标签被腐蚀,只知道一瓶是盐酸溶液,另一瓶是硫酸钾溶液,要分辨它们,你认为可选用的鉴别试剂是(至少填两种)_____________,相关的化学方程式为:_______________________________________。

(任写一个)29. 某溶液中含有碳酸银、硝酸铜和硝酸钡三种物质,要使三种物质分别转化为沉淀分离出来,现有①碳酸钠溶液、②氢氧化钠溶液、③稀盐酸三种试剂,则加入的顺序是_______ _____________。

30. 在硝酸银溶液中加入盐A的溶液,产生白色沉淀。

过滤后在滤渣中滴加稀硝酸,沉淀不溶解;在滤液中再加入钠盐B的溶液,又产生白色沉淀。

过滤后在滤渣中滴加稀硝酸,沉淀不溶解。

则A是_____________;B是_____________。

31. 粗盐中含有较多的可溶性杂质(氯化镁、氯化钙)和不溶性杂质(泥砂等)。

现在,江伟同学利用下列实验操作,对粗盐进行了提纯:①加过量水、②加过量稀盐酸、③加过量氢氧化钠溶液、④加过量碳酸钠溶液、⑤过滤、⑥蒸发、⑦结晶。

他操作的先后顺序是(填序号):_______________________________________。

三. 我会回答。

32. 有一种含有碎菜叶、碎塑料薄膜、泥沙、氯化钠、碳酸钠,还有一定臭味的生活污水(生活污水的成分十分复杂,此处为了便于讨论,已将其组成做了“简化”),将其经去渣去臭处理后可转化为厕所的清洗用水。

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