第二组第10次作业
包头“PEP”2024年10版小学六年级第10次英语第二单元暑期作业(含答案)
包头“PEP”2024年10版小学六年级英语第二单元暑期作业(含答案)考试时间:80分钟(总分:120)A卷考试人:_________题号一二三四五总分得分一、综合题(共计100题共100分)1. 填空题:An iguana can change its ________________ (颜色) to blend in.2. 听力题:The cake is very ________.3. 选择题:How many colors are there in a rainbow?A. 5B. 6C. 7D. 84. 听力题:We will go to the ______ for a field trip. (museum)5. 听力题:The Earth's crust is constantly being shaped by ______ forces.6. 选择题:What do you call the act of learning about something?A. StudyingB. TeachingC. ExploringD. Researching答案: A7. 填空题:The ancient Sumerians are credited with creating the first _____.8. 填空题:My _____ (玩具赛车) is very fast.9. 听力题:The ________ (peacock) has colorful feathers.10. 填空题:The _____ (热带) rainforest has a rich variety of plants.11. 听力题:The _____ (汽车) is red.12. 听力题:The chemical formula for copper(II) sulfate is ______.13. 听力题:Butterflies taste with their ______.14. 选择题:What is the square root of 9?A. 2B. 3C. 4D. 5答案:B15. 听力题:An ant can carry objects many times its own ______.16. 听力题:I have a pet ________.17. 听力题:A _____ has a long orbit and can be seen from Earth.18. 听力题:A gas produced in a reaction can often be seen as _____ bubbles.19. 听力题:The chemical formula for potassium sulfate is ______.20. 选择题:Which instrument is used to measure temperature?A. BarometerB. ThermometerC. SpeedometerD. Ruler答案:B21. 填空题:A ____(community initiative) promotes collective action.22. 选择题:What do we call a plant that grows in water?A. Aquatic plantB. Terrestrial plantC. CactusD. Fern23. 听力填空题:I think every person has a unique perspective. I enjoy hearing about __________.24. 听力题:A ______ is an animal that has hooves.25. 选择题:What do you call a person who studies animals?A. BiologistB. ZoologistC. NaturalistD. All of the above答案:D26. 填空题:My friend loves to try __________ (新事物).27. 选择题:What do we call the science of studying the Earth’s physical features?A. GeologyB. GeographyC. CartographyD. Oceanography答案:B28. 听力题:An atom's mass is mostly from the ______.29. 听力题:Earth has one ______, but some planets have more.30. (Titanic) sank in 1912 after hitting an iceberg. 填空题:The ____I have a ______ of marbles. (bag)32. 填空题:We have a ______ (愉快的) family day every month.33. 选择题:What do you call the study of living things?A. BiologyB. ChemistryC. PhysicsD. Geography答案: A34. 填空题:The first successful airplane flight was achieved by the ______ (莱特兄弟).35. 选择题:What do we call a young deer?A. FawnB. CalfC. KidD. Pup36. 填空题:This girl, ______ (这个女孩), enjoys reading stories before bed.37. 选择题:What is the chemical symbol for gold?A. AuB. AgC. PbD. Fe答案:A38. 听力题:The process of making soap involves a reaction between an acid and a _______.39. 听力题:I enjoy ______ (writing) stories.40. 填空题:A ________ (种子选择) affects crops.41. 填空题:The clouds are _______ in the sky.The body part that helps us breathe is called the ______.43. 听力题:She is reading a story to ___. (her brother)44. 听力题:The _____ (car/bike) is red.45. 选择题:What do we call the season when flowers bloom?A. AutumnB. WinterC. SpringD. Summer46. 选择题:What do you call a drawing or painting of a person?A. LandscapeB. PortraitC. SculptureD. Collage答案:B47. 填空题:The tortoise is known for its ______ (耐心).48. 填空题:I love to watch ________ (电视剧).49. 听力题:The changes in matter can be described as physical or _____.50. 听力题:The __________ is a mountain chain in Asia.51. 填空题:A rabbit's ears help it detect ______ (危险).52. 听力题:The chemical formula for sodium chloride is ______.53. 填空题:The country known for its coral reefs is ________ (以珊瑚礁闻名的国家是________).In the garden, I planted _____ (多种) vegetables like carrots and tomatoes.55. 填空题:The __________ is a famous historical site in Mexico. (特奥蒂瓦坎)56. 填空题:The trees look beautiful when they are ______ (覆盖着雪).57. 听力题:The cake is ______ with candles. (decorated)58. 听力题:The ______ is a talented musician.59. 听力题:The ______ is a layer of the Earth that is partially molten and allows for plate movement.60. 选择题:What is the capital of Japan?a. Beijingb. Tokyoc. Seould. Bangkok答案:b61. 填空题:The sun helps flowers to ______ (开放).62. 选择题:What color is the sky on a clear day?A. GreenB. BlueC. RedD. Yellow答案: B63. 选择题:What do you call a large body of freshwater?A. SeaB. OceanC. LakeD. River答案:CThe chameleon can change colors to _________ (伪装).65. 选择题:What is the name of the sport played with a ball and a net?A. SoccerB. TennisC. BaseballD. Golf答案: B66. 填空题:The __________ is a famous mountain in Europe. (阿尔卑斯山)67. 填空题:I have a collection of ______ (玩具).68. 听力填空题:I believe in setting goals. This year, my goal is to __________.69. 听力填空题:My favorite memory from last summer was __________. I had so much fun because __________. I hope to create more memories like that in the future!70. 选择题:What is 12 - 5?A. 6B. 7C. 5D. 871. 填空题:The capital of Saudi Arabia is ________ (利雅得).72. 听力题:I like to ___ puzzles. (solve)73. 填空题:I enjoy baking ______ (饼干) with my mom. The smell fills the house and makes everyone ______ (开心).74. 听力题:I like to ___ (have) fun with my friends.75. (Protestant) Reformation changed the course of Christianity. 填空题:The ____76. 听力题:The chemical symbol for mercury is ______.77. 听力题:A _______ is a flat area of land that is higher than the surrounding land.78. 选择题:What do you call a person who flies an airplane?A. PilotB. EngineerC. DoctorD. Teacher答案:A79. 填空题:My mom loves to ______.80. 听力题:The ocean is very ________.81. 填空题:My teacher is __________ (严格的) but very kind.82. 听力题:My brother likes to learn about ____ (space).83. 选择题:What do we call the main character in a film?A. ActorB. ActressC. ProtagonistD. Supporting character答案: C. Protagonist84. 听力题:A _______ forms when a gas cools and turns into a liquid.85. 选择题:What do we call the process of converting a gas into a liquid?A. EvaporationB. CondensationC. SublimationD. FreezingA ____ is known for its ability to change colors.87. 选择题:Which month comes before December?A. NovemberB. OctoberC. SeptemberD. January答案:A88. 选择题:What is the tallest building in the world?A. Eiffel TowerB. Burj KhalifaC. Empire State BuildingD. CN Tower答案:B89. 选择题:What is the name of the famous American holiday celebrated on the last Thursday of November?A. ThanksgivingB. Labor DayC. Independence DayD. Veterans Day答案:A90. 听力题:The cat sleeps on a _____.91. 填空题:My brother is our family's __________ (乐趣).92. 听力题:The coffee is ___ (hot/cold).93. 听力题:A __________ is a large area of historic significance.94. 填空题:The ________ (岩石) formation is millions of years old.95. 听力题:The Moon's gravitational pull causes ______ on Earth.What is the name of the famous battle fought in 1066?A. Battle of HastingsB. Battle of WaterlooC. Battle of GettysburgD. Battle of Agincourt答案:A97. 听力题:Fuels release energy when they undergo ______.98. 填空题:My favorite thing to learn is ______.99. 选择题:What do you call a young deer?A. CalfB. FawnC. KitD. Pup答案:B100. 听力题:The capital of Malta is __________.。
小学上册第10次英语第六单元暑期作业
小学上册英语第六单元暑期作业英语试题一、综合题(本题有100小题,每小题1分,共100分.每小题不选、错误,均不给分)1.What do we call the process of water moving from the surface to the atmosphere?A. EvaporationB. PrecipitationC. CondensationD. InfiltrationA2.What is the name of the famous explorer who discovered America?A. Christopher ColumbusB. Ferdinand MagellanC. Marco PoloD. Vasco da GamaA Christopher Columbus3.What is the name of the famous statue in New York Harbor?A. Christ the RedeemerB. DavidC. Statue of LibertyD. Venus de MiloC4.What is your favorite ________?5.What do you call a young kangaroo?A. CalfB. JoeyC. KidD. Pup6.The __________ (历史的社会构成) shapes our identities.7.The chemical symbol for iron is ______.8.What is the name of the fairy tale with the wolf and the three pigs?A. Little Red Riding HoodB. The Three Little PigsC. Jack and the BeanstalkD. Goldilocks and the Three Bears答案:B9.We had fun making a video with our toy ____. (玩具名称)10.energy efficiency) reduces energy consumption. The ____11.What is a baby chicken called?A. DucklingB. GoslingC. ChickD. LambC12. A homogeneous mixture has a uniform ______ throughout.13.The _____ (小狗) loves to wag its tail.14.What is the name of the animal that can hop?A. DogB. FrogC. KangarooD. Cat15.What is the term for a young female rabbit?A. BunnyB. KitC. PupD. LeveretB16. A _____ (小马) can be very gentle and calm.17. A thermometer measures ______.18. (22) Ocean is the largest ocean. The ____19.What is the main ingredient in salad?A. LettuceB. TomatoC. CucumberD. All of the aboveD20.I wear _____ (运动鞋) to school.21.She is _______ (studying) for her exam.22.What do we call the main character in a story?A. ProtagonistB. AntagonistC. NarratorD. AuthorA23.The __________ is known for its fjords and beautiful scenery.24.When I press the button, it makes a ______ (声音). It also has ______ (数量) different modes. I love to play with my friends using this toy.25.__________ (环境保护) often involves understanding chemical interactions in nature.26.We can _______ a garden together.27.The _____ (fireflies) light up the night.28.What is the name of the closest star to Earth?A. Proxima CentauriB. Alpha CentauriC. BetelgeuseD. Sirius29.My ________ (弟弟) loves to draw pictures of animals.30.The process of breaking down food in our bodies is called ______.31.The ______ (鲸鱼) is known for its intelligence and size.32.What is the name of the famous American singer known for her soulful voice?A. Aretha FranklinB. Tina TurnerC. Whitney HoustonD. Billie HolidayA33.In which country is the Great Wall located?A. JapanB. IndiaC. ChinaD. Thailand34.Astronomy is the study of ______ and the universe.35.The butterfly landed on a ________.36.I have _____ of friends in my class. (lots)37.The chemical formula for potassium dichromate is _____.38.We saw a ______ climbing a tree.39.During the holidays, I visit my ________ (祖父母). They live in the ________ (乡村).40.My toy ____ is my best friend. (玩具名称)41. A ________ is a body of water that connects two larger bodies of water.42.War ended with the collapse of the ________ (苏联). The Cold43. A __________ is a region characterized by specific features.44.My favorite sport is _______ (游泳).45.The door is ________ open.46.The _______ (The Spanish-American War) marked the emergence of the US as a global power.47.The _____ (植物观察者活动) can foster appreciation for local flora.48.What is the name of the famous ancient city in Syria?A. PalmyraB. DamascusC. AleppoD. All of the above49.My brother is a ______. He likes to study science.50.Which one is a mode of transportation?A. HatB. CarC. TableD. ShoeB51.I want to ___ (learn/know) more about it.52.My brother has a ________ that barks loudly.53.The rabbit is ________ in the grass.54.urban) area is characterized by high population density. The ____55.I can tell stories with my toy ________ (玩具名称).56.He is a _____ (厨师) who makes delicious food.57.What is the name of the famous film about a young boy and his pet dinosaur?A. Jurassic ParkB. Land Before TimeC. DinosaurD. Ice Age58.The painter, ______ (画家), uses bright colors in her artwork.59.What is the color of a ripe peach?A. GreenB. YellowC. PinkD. PurpleC60.The ________ was a famous war fought in ancient Greece.61.I love to watch ______ (舞蹈表演). It’s amazing to see the creativity and talent of the performers.62.My ________ (玩具名称) helps me learn about different cultures.63.The first man to dive into the Mariana Trench was _______. (维尔德)64. a Desert is located in _____ (9). The Saha65.At school, I prefer being called ______ by my friends. (在学校,我更喜欢我的朋友叫我。
北京中医药大学《生物化学B》第1~10次作业答案
16. 根据基团结构,从下列氨基酸中排除一种氨基酸 CA.苯丙氨酸B.色氨酸C.脯氨酸D.赖氨酸E.谷氨酸
17. 哪种成分在人体内含量最稳定 DA.糖原B.脂肪C.蛋白质D.DNAE.维生素
15. 符合竞争性抑制作用的说法是 BA.抑制剂与底物结合B.抑制剂与酶的活性中心结合C.抑制剂与酶活性中心外的必需基团结合D.抑制剂使二硫键还原,破坏酶的空间构象E.抑制剂与辅酶结合,抑制全酶的组装
16. 关于核苷酸生理功能的错误叙述是 BA.多种核苷酸衍生物为生物合成过程中的活性中间产物B.核苷酸是辅助因子的成分C.核苷酸是生物膜的基本结构成分D.核苷酸是生物体内最主要的直接供能物质E.核苷酸调节代谢
10. 一个蛋白质分子含有二硫键,所以该蛋白质含有 CA.甲硫氨酸B.赖氨酸C.半胱氨酸D.色氨酸E.天冬氨酸
11. 泛酸是人体所需的一种维生素,但它本身没有生物活性,而是在人体内与ATP及一种氨基酸合成为辅酶A后才在代谢中发挥作用。这种氨基酸是 DA.丝氨酸B.色氨酸C.苯丙氨酸D.半胱氨酸E.谷氨酰胺
* 4. 不能被人体消化酶消化的是[D ] A.蔗糖B.淀粉C.糊精D.纤维素E.糖原
* 5. 用班氏试剂检验尿糖是利用葡萄糖的哪种性质[B ] A.氧化性B.还原性C.成酯D.成苷E.旋光性
* 6. 属于戊糖的是[A ] A.2-脱氧核糖B.蔗糖C.葡萄糖D.半乳糖E.果糖
* 7. 下列说法符合脂肪概念的是[E ] A.脂肪是类脂B.脂酰甘油就是脂肪C.脂肪中含有不饱和脂肪酸多D.脂肪中含有磷酸基E.脂肪是三脂酰甘油
12. 一个简单的酶促反应,当[S]<Km时 C A.反应速度最大B.反应速度不变C.反应速度与底物浓度成正比D.增加底物,反应速度不变E.增加底物,反应速度降低
小学下册第10次英语第二单元暑期作业
小学下册英语第二单元暑期作业英语试题一、综合题(本题有100小题,每小题1分,共100分.每小题不选、错误,均不给分)1.What do you call a person who repairs cars?A. MechanicB. ElectricianC. PlumberD. Engineer2.I want to _______ (了解)生态系统.3.We have a ______ of books in the library. (collection)4.I have a toy _______ that can move its arms and legs.5.My dog likes to bark at _______ (陌生人).6.The bread is _____ (fresh/stale).7.What is 2 + 2?A. 3B. 4C. 5D. 68.Which holiday is celebrated on December 25th?A. HalloweenB. ThanksgivingC. ChristmasD. New Year9. A ______ can develop into various forms.10.The chemical properties of a substance are observed during a _____ change.11.The chemical symbol for yttrium is ______.12.I want to ______ a new bike. (get)13.The __________ (历史的讨论) can lead to resolution.14.My favorite sport is _______ (田径).15.Elements in the same group of the periodic table have similar ______.16.__________ can exist as solids, liquids, or gases.17.The __________ is the longest river in the world.18.What do you call the place where fish are kept?A. PondB. AquariumC. OceanD. RiverB19.The __________ is home to many unique species of animals.20.What is the process called when a star collapses under its own gravity?A. SupernovaB. Black Hole FormationC. Red Giant PhaseD. Stellar Evolution21.How many players are on a soccer team?A. 7B. 9C. 11D. 13C22.I saw a ________ exploring the garden.23.The __________ is a large area of frozen ground found in the Arctic. (永久冻土)24.I like to pretend that my ________ (玩具类型) is alive.25.ts are adapted to _____ (盐碱地). Some pla26.She enjoys ________.27.What is the time of day when the sun sets?A. MorningB. AfternoonC. EveningD. Night答案:C28.Chemical formulas are used to represent the ________ of compounds.29.The hedgehog rolls into a ______ (球) when scared.30.The study of how landscapes change over time is called ______ science.31.My favorite _____ is a little robot.32.I always bring my ____ when I travel. (玩具名称)33.The main product of cellular respiration is _____.34.What do we call a large body of saltwater?A. RiverB. LakeC. OceanD. Pond35.I gave my old ____ to a younger child. (玩具名称)36.The __________ (历史小说) often bring past events to life.37.Which famous scientist developed the theory of relativity?A. Isaac NewtonB. Albert EinsteinC. Galileo GalileiD. Charles DarwinB Albert Einstein38.My friend has a pet _____ (仓鼠).39.An owl is a wise _______ that comes out at night.40.The cat curls up on a _____ soft blanket.41.What is the name of the first artificial satellite sent into space?A. ApolloB. VoyagerC. SputnikD. HubbleC42.The _______ of a wave can be described by its speed and frequency.43.The Earth's atmosphere contains various ______ essential for life.44.I enjoy listening to ________ (民谣音乐) at home.45.Which bird is known for its colorful feathers?A. PenguinB. SparrowC. PeacockD. PigeonC46.What is 10 - 4?A. 5B. 6C. 7D. 847.Inertia is the tendency of an object to stay at ______ (rest).48.In the afternoon, I go home and do my ________ (作业). I study English because I want to speak it ________ (流利).49.My uncle has a __________. (商店)50.The ancient Egyptians utilized ________ (香料) in their rituals.51.What is the smallest prime number?A. 0B. 1C. 2D. 3答案:C52.Which planet is known as the "Giant Planet"?A. EarthB. SaturnC. JupiterD. UranusC53.The asteroid belt is located between Mars and ______.54.My favorite subject is _______ (英语).55.The capital of Turkmenistan is __________.56.What is the name of the famous painting of a woman with a mysterious smile?A. The ScreamB. Girl with a Pearl EarringC. Mona LisaD. The Birth of Venus57.My dad is very __________ (有责任心).58.My grandpa tells great ______. (我爷爷讲的故事很精彩。
linux基础题库(4次作业)
第一次作业1、inux是所谓的free software,这个free的含义是(C )A 不需要付费B 发行商不能向用户收费C 可自由修改和发布D 只有LINUX作者才能向用户收费2下列哪个选项不是linux支持的( B )A.多用户B.超进程C.可移植D.多进程3、下列属于块设备的是(B )A 终端B 键盘C 游戏杆D 硬盘4、下面关于shell的说法,不正确的是(C )A 一种和C类似的程序语言B 操作系统的外壳C 用户与LINUX内核之间的接口程序D 一个命令语言解释器5、hda2表示( D )A IDE0接口上的从盘B IDE0接口上的第二个逻辑盘C 接口上主盘的第二个分区D IDE0接口上主盘的第二个主分区6、安装linux系统对磁盘分区的要求是( B )A 至少一个分区B 至少两个分区C 至少三个分区D 至少4个分区7、系统引导的过程一般包括如下几步:1 MBR中的引导装载程序启动;2 用户登录; 3 Linux 内核运行;4 BIOS自检。
正确的顺序是()A 4231B 2431C 1432D 41328、可以用以下那个组合键来关闭X-WINDOW 图形化用户界面()A Ctrl +Alt+BackSpaceB Ctrl+ Alt+SpaceC Ctrl +Shift+BackSpaceD Ctrl +Shift+Space9、pwd命令的功能是(A )A 显示当前目录的却对路径B 设置用户的口令C 显示用户的口令D 相当于在windows命令行规界面输入dir10、cd命令可改变用户的当前目录,当用户键入cd,并按回车键,则(C )A当前目录改为根目录B 当前目录没变,屏幕显示当前目录 C 当前目录改为用户主目录 D 当前目录改为上一级目录11、用户帐号信息是保存在以下那个文件中(A )A /etc/usersB /etc/gshadowC /etc/passwdD /etc/inittab12、超级用户的主目录是(B )A /B /rootC /homeD /home/root13、新建用户用useradd命令,如果要指定用户的主目录,则需要()选项A –gB -dC –uD -s14、超级用户的UID是(C )A 1B 2C 500D 015、tar命令可以进行文件的( A )A 归档和压缩B 压缩和解压缩C 归档和解压缩D 归档、压缩和解压缩16、执行命令chmod o-w myfile后,myfile文件的权限变化为( A )A 同组用户可写B 其他用户可写C 所有用户可写D 其他用户不可写17、linux中与windows系统中的program files文件夹功能项类似的是(C )A /varB /homeC /usrD /proc18、当一个目录作为一个挂载点被使用后,该目录上的元文件(C )A 被永久删除B 被放入回收站C 被隐藏,待挂载设备卸载后恢复D 被隐藏,待计算机重启后恢复19、red hat 9种默认的文件系统是( D )A vfatB ext2C iso9660D ext320、要删除目录/home/123/321连同其下几目录和文件,不需要确认,正确命令为( C )A rmdir –p /home/123/321B rmdir –pf /home/123/321C rm –rf /home/123/321D rm –df /home/123/32121、正在执行的一个或多个相关(B )组成一个作业A 作业B 进程C 程序D 以上都是22、进程调度cron、at、batch中,可执行多次的是()A atB cornC batchD 三者都可23、与ifup/down eth0命令功能相同的命令是()A ifdown eth0 upB ifconfig eth0 up/downC ifconfig up/down eth0D ifconfig up eth024、eth0设备的别名可为()A eth0-1B eth0:1C eth 1D eth-alias25、负责执行防火墙规则的服务(守护进程)是()A iptablesB networkC securityD xinetd26、smaba的默认安全级别是()A shareB userC serverD domain27、samba的核心是两个后台进程,它们是()A smbd和nmbdB nmbd和inetdC inetd和smbdD inetd和httpd28、保留域名服务器ip地址文件的是()A /etc/hostsB /etc/networksC /etc/resolv.confD ./.profile29、通过修改以下那个文件可设置www服务器的虚拟主机()A host.confB diphostsC sendmail.cfD httpd.conf30、ftp命令行工具一次可下载多个文件可以用那个命令()A getB putC mgetD mput31、http图形化配置工具中“监听端口”项与httpd.conf文件中的那个参数相对应()A server nameB server adminC documentrootD listen32Linux的创始人是谁?()A、TurbolinuxB、A T&T Bell LaboratryC、University of HelsinkiD、Linus Torvalds33在Linux中,命令解释器是哪个?()A、管道B、分级文件系统C、字符型处理器D、shell34Linux安装程序提供了两个引导装载程序( )A、GROUP和LLTOB、DIR和COIDC、GRUB和LILOD、以上都不是35如果当前目录是/home/sea/china,那么“china”的父目录是哪个目录?()A、/home/seaB、/home/C、/D、/sea36在Linux中,要删除abc目录及其全部内容的命令为:()A、rm abcB、rm -r abcC、rmdir abcD、rmdir -r abc37假定kernel支持vfat分区,下面哪一个操作是将/dev/hda1,一个Windows分区加载到/win 目录?()A、mount -t windows /win /dev/hda1B、mount -fs=msdos /dev/hda1 /winC、mount -s win /dev/hda1 /winD、mount –t vfat /dev/hda1 /win38系统中有用户user1和user2,同属于users组。
小学上册第10次英语第二单元暑期作业(有答案)
小学上册英语第二单元暑期作业(有答案)英语试题一、综合题(本题有100小题,每小题1分,共100分.每小题不选、错误,均不给分)1.The trees look beautiful when they are ______ (覆盖着雪).2.My friend is very __________ (友好的) towards everyone.3.The ____ has a hard shell and moves slowly.4.My ________ (玩具名称) has a funny voice.5.The gift is _____ (for/from) you.6.The sun is ______ in the sky. (high)7.What is the main ingredient in a Caesar salad?A. LettuceB. SpinachC. KaleD. Cabbage答案:A8.The ______ is where we live on Earth.9.The chemical formula for sodium hydroxide is ______.10.The Big Dipper is part of the _____ constellation.11.The ________ (rocket) launches into space.12.The __________ is a famous city in Spain.13.The chemical formula for lithium hydroxide is _______.14.When I play with my sister, I sometimes call her . (当我和我的妹妹玩时,我有时叫她。
)15.I can draw a picture of my favorite _________ (玩具) and share it with my class.16.The __________ (社会结构) has evolved throughout time.17.I enjoy _______ (参加) local markets.18.The ______ shows the relationship between animals and plants.19.The capital of Djibouti is ________ (吉布提).20.The discovery of ________ has revolutionized our understanding of the human body.21.environmental restoration) recovers damaged areas. The ____22.The teacher is always __________ (耐心的) with us.23.What is 10 divided by 2?A. 3B. 4C. 5D. 6答案:C24.He is a _____ (分析师) in a financial firm.25.What do you call the device used to charge your phone?A. ChargerB. BatteryC. PlugD. Adapter答案: A26.The ________ loves to dance in the sunlight.27.I drink _____ (coffee/juice) in the morning.28.The chemical symbol for hafnium is ______.29.The walrus has large tusks used for ______ (保护).30.The __________ (历史的记忆) shapes who we are.31.The ______ (鲸鱼) is known for its size and beauty.32.What do we call the large body of salt water?A. RiverB. OceanC. LakeD. Pond答案:B.Ocean33. A turtle's shell protects its ______ (身体).34. A ______ (海星) lives in the ocean and is colorful.35.My friend is a very ________ (好心) person.36.My brother likes to learn about ____ (history).37.The particles in a gas are ______ apart.38.The ______ is a powerful animal in the jungle.39.I want to be a ______ (老师) when I grow up. I want to teach kids and help them______ (学习).40.What is the name of the famous British author known for her novels about wizards?A. J.K. RowlingB. J.R.R. TolkienC. C.S. LewisD. Philip Pullman答案:A41.What is the color of the sky on a clear day?A. GreenB. BlueC. RedD. Yellow答案:B42.The Age of Exploration began in the _______ century.43.The ______ is a skilled engineer.44.I can do magic tricks with my _________ (魔术玩具).45.What is a baby cow called?A. PuppyB. CalfC. KittenD. Foal答案: B46.The ancient Greeks believed in the importance of ________ (艺术).47.How many colors are in a rainbow?A. 5B. 6C. 7D. 8答案: C48.I want to be a __________ (作家) when I grow up.49.My brother is very ________.50.What is the name of the famous American landmark known for its large stone faces?A. Mount RushmoreB. Statue of LibertyC. Lincoln MemorialD. Washington Monument答案: A. Mount Rushmore51.小果子) grows on trees. The ___52.The _____ (plantation) produces coffee beans.53.The tiny organisms that can live in extreme environments are called ______.54. A __________ is a fundamental concept in geology.55.The trees in the _______ provide a cool shade on sunny days.56.What do you call a small, furry animal that is often kept as a pet?A. HamsterB. LizardC. SnakeD. Frog答案: Aets are often described as "dirty snowballs" made of ice and ______.58.s always turn towards the _______. Sunflowe59.Salt can be formed by the reaction of an acid and a _____ (base).60.The ________ was a notable treaty that resolved longstanding tensions.61.I like to draw _______ (我喜欢画_______).62.My cousin is very __________ (勤奋).63.The chemical symbol for antimony is _______.64.The _____ (park/garden) is close by.65.What is the name of the planet we live on?A. MarsB. VenusC. EarthD. Jupiter答案: C. Earth66.I like to play ________ (视频游戏) with friends.67.The stars are _______ (在闪耀).68.I saw a _______ flying in the garden (我在花园看到一只_______在飞).69.I hope you have a ________ day.70.The burning of fuels is an example of a _____ reaction.71. A _______ (小海豹) loves to dive and catch fish.72.The ancient Egyptians valued ________ as part of their culture.73.The capital of France is ________ (法国的首都是________).74.The _____ (birch) tree has white bark.75.Owls hunt for _______ at night.76.Plants can _____ (adapt) to their environment.77.My ________ (玩具) is a reflection of my passions.78.What do you call the sweet treat made from fruit puree and sugar?A. GelatoB. SorbetC. Ice CreamD. Pudding答案: B79.The girl sings very ________.80.The flowers are ________ (五颜六色).81.I like to ______ with my cousins during the holidays. (play)82.The fish swims in the ______ (aquarium).83.What is the name of the ocean located to the east of the United States?A. Atlantic OceanB. Pacific OceanC. Indian OceanD. Arctic Ocean 答案: A84.The squirrel's diet consists mainly of ________________ (坚果) and seeds.85.The rabbit has two big ______ (眼睛).86.The Earth's crust is made up of both continental and ______ components.87.The Crab Nebula is a famous ______ remnant.88.I like to invite friends over to play with my __________ (玩具名).89. A _____ is a large area of flat land in the countryside.90.The Earth's surface is influenced by natural and ______ factors.91.My _____ (姑姑) gave me a beautiful plant for my birthday. 我的姑姑在我生日时送了我一盆美丽的植物。
人力资源管理-第二次至第四次作业答案
第二次作业:形成性考核二(A)一、单项选择题(共10 道试题,共30 分.)1。
不同社会形态,不同的文化背景,都会反映和影响人的价值观念、行为方式、思维方式。
这说明人力资源具有什么特征?AA. 社会性B。
再生性C。
实效性D。
能动性2. 在理论界通常将( )看作人力资本理论的创立者、人力资本之父。
BA. 亚当。
斯密B. 舒尔茨C。
泰勒D。
马斯洛3. 人力资源开发要抓住人的年龄最有利于职业要求的阶段来实施最有利的激励措施,这是因为人力资源具有()特征。
BA。
能动性B。
时效性C. 社会性D. 再生性4. 确保组织生存发展过程中对人力资源的需求的人力资源管理环节是()。
BA。
人员招聘B。
人力资源规划C。
培训D。
工作分析5. 人力资源需求预测方法中的专家判断法又称()。
AA. 德尔菲法B。
马尔可夫分析法C。
回归分析法D。
经验判断法6。
由组织的各级管理者,根据需要预测对各种人员需要量,人力资源管理的规划人员把各部门的预测进行综合,形成总体预测方案,这种方法称为( )。
CA。
管理人员判断法B。
经验预测法C. 微观集成法D. 德尔菲法7。
工作性质完全相同的职位系列称作(). BA. 职级B。
职系C. 职组D. 职等8. 工作评价的对象是( )。
AA. 职位B. 任职者C。
职级D. 职称9。
( )就是要评定工作的价值,制定工作的等级,以确定工资收入的计算标准。
BA。
工作分析B. 工作评价C. 职等D。
职级10. ()的缺点是备选对象范围狭窄。
A。
内部招聘B。
外部招聘C. 校园招聘D. 人才猎取二、多项选择题(共10 道试题,共30 分.)1。
人力资本与物质资本具有以下特点()。
ABA. 两者对经济都具有生产性的作用B. 两者都需要投资才能形成C. 物资资本对现代国民经济增长和国民收入增加的作用比人力资本要重要得多D. 物质资本和人力资本都不具备继承或转让的属性2. 人力资源具有以下特征:全A。
社会性B。
2014年9月份考试市场营销第二次作业
2014年9月份考试市场营销第二次作业第一篇:2014年9月份考试市场营销第二次作业2014年9月份考试市场营销第二次作业一、多项选择题(本大题共60分,共 30 小题,每小题 2 分)1.需求差别定价的形式有()。
A.因顾客而异B.因地点而异C.因时间而异D.因产品而异E.因促销而异2.一般对于的产品如食盐等,宜施行无差异市场营销()。
A.同质性高B.同质性低C.不同质D.完全同质E.完全不同质3.目标市场定位的基本步骤包括()。
A.建立市场结构图B.在市场结构图上大致描绘出竞争状况C.初步确定定位方案D.修正定位方案和再定位E.确定定位描述4.关于社会市场营销观念的正确描述有()。
A.是一种现代营销观念B.是一种传统的营销观念C.强调消费者、企业和社会利益的统一D.消费者需求是企业营销的出发点E.是一种最好的市场营销观念5.市场营销管理应当包含分析市场机会和()。
A.选择目标市场B.策划营销战略C.设计营销方案D.实施营销努力6.现成的内部信息资料常包括企业内部的各种有关记录、报表、合同、生产经营计划、宣传资料、()、公众来信和来访记录等。
A.账册B.总结C.协议D.客户名录E.商品介绍7.信息传播有效性的关键取决于()之间的一致性。
A.编码B.反应C.发送者D.接收者E.解码8.以下项目中能够构造产品差异性的产品要素包括()。
A.质量B.功能C.式样D.结构E.安装9.()是营销管理的首要任务。
A.分析市场机会B.评价和掌握市场机会C.制定营销战略D.赚取利润10.影响渠道产出水平的因素主要有()?A.批量大小B.顾客等候时间C.便利性D.经销商数量E.商品供应量11.市场竞争者营销目标一般包括()。
A.竞争对手的经营理念B.竞争对手的组织结构C.竞争对手的财务目标D.竞争对手的控制系统E.竞争对手的宗旨12.垂直营销系统是由()所组成的一种统一的联合体。
A.生产者B.批发商C.零售商D.物流企业E.律师事务所13.按照性质分,广告效果可以分为()。
小学上册第10次英语第二单元暑期作业
小学上册英语第二单元暑期作业英语试题一、综合题(本题有100小题,每小题1分,共100分.每小题不选、错误,均不给分)1.My uncle is a big fan of _______ (运动). 他喜欢 _______ (动词).2.I saw a _______ (大象) at the zoo yesterday.3.I like to ride my _____ (horse/bike) in the park.4.What is the name of the famous landmark in London?A. Big BenB. Eiffel TowerC. Statue of LibertyD. Colosseum5.The main function of enzymes is to ______ reactions.6.The _______ (The Age of Enlightenment) emphasized reason and science.7. A ______ (多样性) of plants is beneficial.8.The ____ has shiny scales and can be found in rivers.9.What is the term for the energy released during a nuclear fusion reaction in a star?A. Stellar EnergyB. Radiant EnergyC. Nuclear EnergyD. Gravitational Energy10.What is the name of the famous waterfall in Venezuela?A. Niagara FallsB. Angel FallsC. Iguazu FallsD. VictoriaFallsB Angel Falls11.The pizza is _____ (hot/cold).12.How many seasons are there in a year?A. TwoB. ThreeC. FourD. Five13.What do you use to write on paper?A. PaintB. PencilC. ScissorsD. GlueB14.Which season comes after summer?A. SpringB. FallC. WinterD. Summer15.She likes to _____ (draw/write).16.I have a collection of toy _____.17.The girl loves to ________.18.My teacher gives us ________ (奖励) for good behavior. I always try to do my best so I can get a ________ (星星).19.Can you _____ (help) me with this?20.What do we call the imaginary line that divides the Earth into the Northern and Southern Hemispheres?A. Prime MeridianB. EquatorC. Tropic of CancerD. Tropic of Capricorn21.I have a magic kit that allows me to perform cool ________ (魔术). My friends are always ________ (印象深刻).22.What do we call the part of the plant that makes seeds?A. LeafB. FlowerC. StemD. RootB23.This girl, ______ (这个女孩), is studying to be a veterinarian.24.Playing with my ________ (玩具名称) makes me happy.25.The chemical formula for water is _______.26.The _____ (种植) of new trees helps improve air quality.27.The invention of the assembly line changed _____ manufacturing.28.I want to _______ (学习) how to write stories.29.The element with the symbol Rn is __________.30.Where do fish live?A. TreesB. GroundC. WaterD. SkyC31.The ancient Romans had a complex system of _______.32.The dog is ___ a stick. (fetching)33.The ________ has a loud voice.34.What do you call a baby shark?A. PupB. FryC. CalfD. KitA35.The rabbit is hiding in the _______ (兔子藏在_______里).36.What do we call the extremely dense remnants of massive stars?A. Neutron StarsB. Black HolesC. White DwarfsD. Red Giants37.__________ are used in the beauty industry for skincare.38.What is the name of the famous statue in Rio de Janeiro?A. Christ the RedeemerB. Statue of LibertyC. ThinkerD. DavidA39.The _____ (狮子) protects its territory fiercely.40.The ______ (小鸭) waddles around the pond.41.I saw a _______ (小兔子) hopping in the garden.42.How do you say "sun" in Spanish?A. SolB. SoleilC. SonneD. Sole43.What is the symbol for gold on the periodic table?A. AuB. AgC. FeD. Pb44.What do we call the art of folding paper into shapes?A. PaintingB. SculptingC. OrigamiD. DrawingC45.My brother is a ______. He enjoys sports events.46.The capital city of Italy is _______.47.Catalysis can significantly speed up the rate of a _____ without being consumed.48. A __________ (植物的名称) can tell you a lot about it.49.What do you call a baby jackal?A. KitB. PupC. CalfD. Cub50.What is the capital of New Zealand?A. SydneyB. WellingtonC. AucklandD. ChristchurchB51.The fish in the aquarium are very _______ (水族馆里的鱼非常_______).52.The flower smells very ______.53.The chemical name for baking soda is __________.54.What is the main ingredient in bread?A. SugarB. FlourC. CheeseD. EggB55.What is 3 x 3?A. 6B. 7C. 9D. 1256.Insects can help with __________ (授粉) as well.57.What do we call the time of day when we go to sleep?A. MorningB. EveningC. NightD. Afternoon58.My best friend is _______ (我最好的朋友是_______).59.What is the main ingredient in bread?A. WaterB. SugarC. FlourD. SaltC60.The _____ (短裤) are blue.61.I can use my toy ________ (玩具名称) to inspire creativity.62.The cat is _____ (小).63.My favorite place to relax i s __________ because it’s peaceful.64.The __________ is very noisy.65.The nurse, ______ (护士), works in the community clinic.66.What part of the plant absorbs nutrients from the soil?A. LeavesB. RootsC. StemD. FlowersB67.The children are _____ in the playground. (laughing)68.__________ (冷却剂) are used to remove heat in chemical processes.69.The __________ (历史的讨论) can lead to new insights.70.Who wrote "Romeo and Juliet"?A. Mark TwainB. J.K. RowlingC. William ShakespeareD. Charles DickensC71.What do we call the process of forming new ideas?A. CreativityB. ImaginationC. InnovationD. All of the aboveD72.I want to visit the __________ (遗址) of ancient civilizations.73.I like to race my toy ________ (玩具名称) with friends.74.Did you see that _____ (小鸟) fly by?75.What is the name of the river that runs through Egypt?A. NileB. AmazonC. MississippiD. YangtzeA76.The process of ______ can alter the landscape significantly.77.Which number comes after 7?A. 6B. 8C. 9D. 1078.The chemical formula for acetic anhydride is ______.79.The chemical formula for copper sulfate is _______.80.My brother is a great ________.81.Which instrument is played by blowing air into it?A. FluteB. DrumsC. GuitarD. PianoA82.The ______ (花园) is a great place to relax.83.I believe that kindness can create a ripple effect in our __________.84.What is the capital of Vanuatu?A. Port VilaB. LuganvilleC. TannaD. Espiritu SantoA85. A solubility test determines how much solute can ______.86.The Earth's crust is composed of different ______ types.87.My ___ (小兔子) enjoys munching on grass.88. A ______ can help restore habitats.89. A plant’s life cycle includes germination, growth, and ______ (结果).90. A sedimentary rock can contain layers of ______.91.The teacher is very ________.92.The city of Muscat is the capital of _______.93.The __________ is a famous mountain range in Asia. (喜马拉雅山)94.The dog is ______ with its favorite toy. (playing)95.My uncle is a fantastic ____ (woodworker).96.The solid that forms from a chemical reaction is called a _______. (沉淀)97.The __________ (文化差异) can enrich social interactions.98.The capital of Bolivia is __________.99.What is the name of the plant that grows in water and has large leaves?A. LilyB. CactusC. FernD. PalmA100.Many species of birds migrate to warmer __________ in winter.。
《第二单元 第10课 路径的应用(一) 一、 绘制路径》作业设计方案-初中信息技术人教版七年级下册自
《绘制路径》作业设计方案(第一课时)一、作业目标本次作业旨在帮助学生掌握绘制路径的基本操作,熟悉各种绘图工具的使用,提高他们的信息技术素养和实践能力。
二、作业内容1. 绘制路径:学生需要使用绘图工具绘制一条路径,路径的起点和终点需要自己设定,路径的形状和走向可以自由发挥,但要保证路径的完整性和合理性。
2. 填充颜色:学生在绘制完路径后,需要为路径填充上颜色,可以使用预设的颜色或者自定义颜色。
3. 保存文件:学生需要将绘制好的路径保存为图片文件,文件名自拟,格式为JPEG或PNG。
三、作业要求1. 作业时间:作业时间为2小时,学生需要在规定时间内完成。
2. 操作规范:学生需要按照教师所教授的绘图工具使用方法进行操作,不得随意改变工具属性或使用方法。
3. 提交作业:学生需要在规定时间内提交作业,作业可以通过网络平台上传或交到教师指定地点。
4. 作品质量:学生需要保证作业质量,不得抄袭或使用他人作品。
四、作业评价1. 作品质量评价:教师根据学生的作业质量进行评价,主要考察学生的路径绘制是否合理、颜色填充是否正确、文件格式是否符合要求等。
2. 学习态度评价:教师根据学生的作业态度进行评价,主要考察学生是否认真完成作业、是否遵守操作规范等。
3. 团队合作评价:如果作业需要小组合作完成,教师还需要评价学生的团队合作情况,主要考察学生是否积极参与、是否能够与同伴协作等。
五、作业反馈在作业评价后,教师将向学生反馈评价结果,指出学生在作业中存在的问题和不足,并提供改进建议。
同时,教师也将收集学生的反馈意见,以便进一步优化教学方案和作业设计。
具体而言,教师可以通过网络平台提供反馈意见表,让学生填写对本次作业的评价和建议。
教师将认真分析学生的反馈意见,不断改进教学方案,提高教学质量。
通过本次作业,学生不仅可以巩固和深化对绘制路径和颜色填充等基本操作的理解和掌握,还可以提高他们的信息技术素养和实践能力,为后续的学习和实际应用打下坚实的基础。
重庆市第一中学校2023-2024学年九年级下学期第十次定时作业数学试题
重庆市第一中学校2023-2024学年九年级下学期第十次定时作业数学试题一、单选题1π,23,0这四个数中,无理数的个数有( )个 A .1 B .2 C .3 D .4 2.下列立体图形中,左视图是圆的为( )A .B .C .D . 3.已知75A ∠=︒,则A ∠的补角为( )A .115︒B .105︒C .75︒D .15︒4.2023年我国出生人口约为9020000人,将9020000用科学记数法表示为( ) A .590.210⨯ B .70.90210⨯ C .69.0210⨯ D .79.0210⨯ 5.下列计算正确的是( )A .235x x x +=B .236x x x ⋅=C .()235x x =D .633x x x ÷=6.估计3+ )A .6到7之间B .7到8之间C .8到9之间D .9到10之间 7.若反比例函数() 0k y k x =≠经过点()1,2-.则一次函数y kx k =+的图像一定不经过( ) A .第一象限 B .第二象限 C .第三象限 D .第四象限 8.如图,AB 是O e 的直径,BC 为弦,D 是弧BC 的中点,连接AD 交BC 于E ,若30BAD ∠=︒,AB =EC =( )A .1 BC D .29.如图,在正方形ABCD 中,点E 在AB 上,F 在AD 的延长线上,BE DF =,连接、CE EF ,EF 交对角线AC 于点O ,G 为EF 的中点,连接DG ,若A C E α∠=,则DGF ∠的度数为( )A .2αB .302α︒- C .45α︒- D .752α︒-10.在多项式x y z m n -+-+中,先任意添加一个括号,再交换括号内首项和末项的符号,最后将所得式子化简,称之为“加换操作”.例如:()x y z m n x y z m n -+-+=-+--,()x y z m n x y z m n --+++=+--+,…给出下列说法:①存在某种“加换操作”,使其结果为x y z m n --+-;②不存在某种“加换操作”,使其结果与原多项式的和为0;③所有的“加换操作”共有8种不同的结果.以上说法中正确的个数为( )A .0B .1C .2D .3二、填空题11.因式分解:24ax a -=.12.一个正多边形的一个内角是它的一个外角的5倍,则这个多边形的边数是13.有三张完全一样正面分别写有字母A ,B ,C 的卡片.将其背面朝上并洗匀,从中随机抽取一张,记下卡片上的字母后放回洗匀,再从中随机抽取一张,则抽取的两张卡片上的字母相同的概率是.14.一辆汽车,新车购买价为20万元,以后每年的年折旧率为x ,如果该车购买之后的第二年年末折旧后的价值为14.45万元,那么可以列出关于x 的方程是.(列出方程即可,无需求解)15.如图,在三角形ABC 中,AC =BC =4,∠C =90°,O 是AB 的中点,以点O 为圆心,2为半径画弧分别与AC 、BC 相切于点D 、点E ,与AB 交于点F .则图中阴影部分面积为.16.如图,在矩形ABCD 中,点E 是边AD 上一点,连接BE ,EC .过点E 作BC 的垂线,垂足为F ,EBC ∠的角平分线分别交EF ,EC 于点G ,H .若12E C B E B C ∠=∠ ,5AE = ,12AB = ,则线段GH 的长为.17.若实数a 使关于x 的不等式组()3522541x x x a x -⎧-≥⎪⎨⎪+>+⎩无解,且使关于y 的分式方程1222a y y y -+=++的解为负数,则所有满足条件的整数a 的值之和为. 18.对于一个四位自然数,如果它满足千位数字与百位数字的和大于或等于十位数字,千位数字与百位数字的差的绝对值小于个位数字,且各个数位上的数字互不相等,那么我们称这个数为“三角数”.例如:3729,因为372+>,379-<,所以3729是“三角数”;又如4057,因为405+<,所以4057不是“三角数”.若M 是最小的“三角数”,则M =;若“三角数”101010040N a b c =+++(15a ≤≤,09b ≤≤,09c ≤≤,a ,b ,c 为整数),记N 的千位数字与十位数字的和为()H N ,当()2H N b -是4的倍数时,满足条件的N 的最大值和最小值的和为.三、解答题19.计算:(1)2()(2)a b b b a ---; (2)22121x x x x x x --⎛⎫÷- ⎪+⎝⎭. 20.如图,在四边ABCD 中,AD BC ∥,BD 是对角线.(1)用尺规完成以下基本作图:作线段BD 的垂直平分线EF ,EF 分别交BD ,AD BC ,于点O ,E ,F .连接BE DF ,.(只保留作图痕迹)(2)在(1)问所作的图形中,求证:四边形BFDE 为菱形.(请完成下面的填空) 证明:∵EF 垂直平分BD∴①______,EF BD ⊥∵AD BC ∥∴②______∵在EDO V 和FBO △中_____EDO FBO DO BO ∠=∠⎧⎪=⎨⎪⎩③ ()ASA EDO FBO ∴V V ≌∴OE OF =,∵DO BO =∴四边形BFDE 为平行四边形∵④______∴四边形BFDE 为菱形(对角线垂直的平行四边形为菱形)在作图过程中,进一步研究还可发现,夹在一组平行线间的线段的垂直平分线与平行线相交后,可以得到一个特殊四边形,请你依照题意完成下面命题:夹在一组平行线间的线段的垂直平分线与平行线相交后⑤______.21.2024年5月12日,是四川汶川地震16周年纪念日,也是我国第16个“防灾减灾日”.为了解学生对“防灾减灾知识的了解程度,某校随机抽取了八年级、九年级各20名学生进行网上问卷测试,并对得分情况进行整理和分析(得分用整数x 表示,单位:分),且分为A ,B ,C 三个等级,分别是:优秀为A 等级:90100x ≤≤,合格为B 等级:7590x ≤<,不合格为C 等级:075x ≤<.分别绘制成如下统计图表.其中八年级学生测试成绩数据的众数出现在B 等级,B 等级测试成绩情况分别为: 75,82,77,82,89,88,89,86,82,88,87;九年级学生测试成绩数据为B 等级共有a 个人.八年级、九年级两组样本的平均数、中位数、众数如表所示:根据以上信息,解答下列问题:(1)填空:=a_______,b=_______,c=_______;并补全八年级抽取的学生测试成绩频数分布方图;(2)根据以上信息,你认为该学校哪个年级的测试成绩更好,并说明理由(写出一条理由即可);(3)若该校八、九年级分别有1400名学生,请估计该校八、九年级学生中成绩为优秀的学生共有多少名?22.随着我国疫情管控的全面放开,近期旅游业逐渐回暖.今年元旦期间,重庆A级景区接待游客47万余人次.今年一月小明购买麻花和桃片这两种特产若干袋作为年货.已知每袋麻花的售价比每袋桃片的售价少4元,且购买麻花的数量是桃片数量的2倍,购买麻花用了280元,购买桃片用了160元.(1)求每袋麻花和每袋桃片的售价;(2)今年三月,小明再次购买一些和上次品质相同的麻花和桃片,恰逢特产店对两种产品的价格进行了调整,三月每袋麻花的售价比一月每袋麻花的售价高13a元,每袋桃片的售价比一月每袋桃片的售价低a元.三月购买麻花的数量比一月购买麻花的数量多50%,且购买桃片的数量是一月购买桃片数量的4倍.最终这次购买两种特产的总费用比一月购买的总费用多了575元,求a的值.23.如图,在矩形ABCD 中,5AD AE ==,4AB =,点P 从点B 出发沿着B E A →→方向运动,当点P 到达点A 时停止运动.设点P 运动的路程为x ,PCD V 的面积为y .(1)直接写出y 与x 之间的函数表达式,并写出x 的取值范围;(2)在给出的平面直角坐标系中,画出y 的函数图象,并写出一条该函数图象的性质:.(3)根据函数图象,直接写出当PCD V 的面积大于ABE V 的面积时,x 的取值范围:. 24.为进一步改善市民生活环境,某市修建了多个湿地公园.如图是已建成的环湖湿地公园,沿湖修建了四边形ABCD 人行步道.经测量,点B 在点A 的正东方向.点D 在点A 的正北方向,1000AD =米.点C 正好在点B 的东北方向,且在点D 的北偏东60︒方向,4000=CD 米.(参1.41 1.73)(1)求步道BC 的长度(结果保留根号);(2)体育爱好者小王从A 跑到C 有两条路线,分别是A D C →→与A B C →→.其中AD 和AB 都是下坡,DC 和BC 都是上坡.若他下坡每米消耗热量0.07千卡,上坡每米消耗热量0.09千卡,问:他选择哪条路线消耗的热量更多?25.如图1,抛物线2y x bx c =-++经过点52,4⎛⎫- ⎪⎝⎭,与y 轴交于点C ,直线l :34y x =-经过点C ,与抛物线交于点A ,与x 轴交于点B .(1)求抛物线的解析式;(2)点P 为直线l 上方抛物线上一点,作PQ l ⊥于点Q ,求42PQ QB +的最大值以及此时点P 的坐标.(3)如图2,将抛物线2y x bx c =-++沿着射线AB 方向平移2个单位得到抛物线y ',y '与x 轴分别交于点D 、点E ,与y 轴交于点F ,连接EF ,EF 与y '对称轴交于点N .点M 是抛物线y '对称轴上一点,当EFM EMN ∠=∠时,求点M 的坐标.26.如图,在ABC V 中,,120AB AC BAC =∠=︒,点F 在线段AC 上,连接BF ,延长CA 至点D ,连接BD ,满足ABF ABD ∠=∠,点H 是线段BC 上一动点(与点B ,C 不重合),连接DH 交BF 于点E ,交AB 于点G .(1)如图1,若2ABF FBC BD ∠=∠=,,求DC 的长;(2)如图2,若12C D H B F D D E F ∠+∠=∠,猜想AD 与CH 的数量关系,并证明你猜想的结论;(3)如图3,在(1)的条件下,点P 是BCD V 内一点,连接BP DP ,,满足150BPD ∠=︒,是否存在点P ,H ,使得2+PH CH 最小,若存在,请直接写出2+PH CH 的最小值.。
《第二章10科学记数法》作业设计方案-初中数学鲁教版五四制12六年级上册
《科学记数法》作业设计方案(第一课时)一、作业目标本作业旨在巩固学生对科学记数法概念的理解,掌握其应用方法,并能够正确运用科学记数法解决实际数学问题。
二、作业内容一、预习自测:1. 掌握科学记数法的概念及其基本形式(如:a×10^n)。
2. 理解科学记数法的应用场景及在生活中的实际意义。
3. 完成预习自测题,包括但不限于概念理解题、填空题和选择题,旨在检测学生对基础知识的掌握程度。
二、知识巩固:1. 复习教材中的例题,加深对科学记数法运用规则的理解。
2. 练习使用科学记数法表示不同大小数值的技巧,尤其是涉及较大或较小数值的表示。
3. 完成一定量的习题,包括正误判断、计算题等,以强化记忆。
三、实践应用:1. 结合生活中的实际例子,如天文学、地理学中的数据表示等,应用科学记数法进行表达。
2. 小组讨论并撰写报告,讨论科学记数法在日常生活中的应用场景及重要性。
3. 结合数学问题,如面积、体积等计算问题,使用科学记数法进行快速计算。
四、拓展延伸:1. 了解非十进制科学计数法(如二进制、十六进制等)的表示方法及其在计算机领域的应用。
2. 阅读相关数学读物或网络资源,深入了解科学记数法的历史渊源及其发展历程。
3. 探索不同学科领域中科学记数法的交叉应用案例,提高多学科交叉能力。
三、作业要求一、所有作业必须独立完成,不得抄袭他人作品或网上答案。
二、在自测题中如实反映自己对知识点的掌握程度,对于不熟悉或错误的部分需进行反思并寻求帮助。
三、在实践应用部分,需结合实际生活案例进行讨论和报告撰写,确保内容真实且具有现实意义。
四、拓展延伸部分鼓励创新思维和自主探索,将所学的知识进行更深入的探讨和思考。
五、作业格式清晰、字迹工整,解题步骤完整,思路清晰。
六、提交作业时需附上个人学习心得体会,总结本次作业的学习成果及对未来学习的展望。
四、作业评价一、教师将根据学生完成作业的准确度、完整性及创新性进行评价。
二、针对学生提交的个人学习心得体会进行评价,给予指导性意见和建议。
北邮质量管理学基础作业(一)
一、判断题(共10道小题,共100.0分)
1.产品质量的好坏,最终要通过用户的使用来评价。
A.正确
B.错误
2.QC小组活动是日本式质量管理的基础和重要支柱。
A.正确
B.错误
3.当p≥5时,二项分布与正态分布相近似。
A.正确
B.错误
4.适宜的质量体系应能满足现实质量目标的需要,同时也是经济而有效的。
A.正确
B.错误
5.标准偏差表示数据与质量标准的差异程度。
A.正确
B.错误
6.正态分布是一种离散型分布。
A.正确
B.错误
7.偶然因素是指对产品质量偶然起作用的因素。
A.正确
B.错误
8.排列图的主要作用是用来抓质量的关键性问题。
A.正确
B.错误
9.散布图是研究两个随机变量之间关系的方法。
A.正确
B.错误
10.直方图可以直观的反映出产品质量的分布情况。
A.正确
B.错误。
人教版高中生物必修第二册暑假作业10:人类遗传病(含答案解析)
暑假作业10:人类遗传病一、单选题(共60分)1.囊性纤维病是北美白种人常见的一种单基因遗传病。
下列关于该遗传病的叙述正确的是()A.分析异常基因的碱基种类可以确定变异的类型B.调查该病的发病率应在自然人群中随机取样调查计算C.该遗传病一定会传给子代个体D.基因突变可能造成某个基因的缺失,引起该遗传病2.甲病和乙病均为单基因遗传病。
如图为某家族有关甲病、乙病的遗传家系图。
下列叙述错误的是()A.甲病为常染色体显性遗传病,乙病为常染色体隐性遗传病B.图中表现正常的人都不携带甲病的致病基因C.Ⅱ7和Ⅲ10基因型相同的概率为11/18D.Ⅲ9的致病基因直接来自Ⅱ6和Ⅱ73.下列表述正确的有()①人类基因组测序是测定人的23条染色体的碱基序列;②通过人类基因组计划的实施,人类可以认识到人类基因的组成、结构和功能;③单基因遗传病是由一个致病基因控制的遗传病;④遗传病是由遗传物质改变引起的;⑤先天性疾病一定是遗传病,后天性疾病一定不是遗传病;⑥家族性疾病都是遗传病;⑦遗传病的发病与遗传因素有关而与环境因素无关.A.一项B.两项C.三项D.四项4.下列关于人类遗传病的检测和预测的叙述,正确的是A.患苯丙酮尿症的妇女与正常男性生育的后代适宜选择生女孩B.羊水检测是产前诊断的唯一手段C.产前诊断能有效地检测胎儿是否患有遗传病或先天性疾病D.遗传咨询的第一步就是分析确定遗传病的传递方式5.某班同学对一种单基因遗传病进行调查,绘制并分析了其中一个家系的系谱图。
下列说法正确的是A.该病为常染色体隐性遗传病B.Ⅱ5是该病致病基因的携带者C.Ⅱ5与Ⅱ6再生患病男孩的概率为1/8D.Ⅲ9与正常女性结婚,建议生女孩6.近年来,随着我国医疗技术及医疗条件的改善,传染性疾病逐渐得到了控制,但遗传病己成为威胁人类健康的一个重要因素,下面对遗传病的认识正确的是A.苯丙酮尿症是一种单基因遗传病,医学上常用DNA探针来诊断B.多基因遗传病不仅表现出家族聚集现象,还易受环境影响C.一个家族几代人中都出现过的疾病一定是遗传病D.一般选择有某个遗传病的家族来研究此病的发病率7.下图为甲种遗传病(基因为A、a)和乙种遗传病(基因为B、b)的家系图,其中Ⅱ2只携带一种致病基因,且正常女性人群中甲、乙两种遗传病基因携带者的概率分别是1/10000和1/100。
兰州“PEP”2024年10版小学四年级上册第10次英语第1单元暑期作业
兰州“PEP”2024年10版小学四年级上册英语第1单元暑期作业考试时间:60分钟(总分:140)考试人:_________题号一二三总分得分评级介绍:本试卷针对兰州“PEP”2024年10版小学四年级上册第1单元,难度适中,重点考查基础词汇和日常对话能力,旨在巩固学生的英语学习成果。
一、(选择题)总分:40分(1分/题)1、What is the opposite of "empty"?A, FullB, CleanC, DirtyD, Light2、What do you call a person who helps sick animals?中文解释:帮助生病动物的人叫什么?A, VetB, DoctorC, Trainer3、What do we call the process of a plant absorbing nutrients?我们称植物吸收养分的过程为?A, AbsorptionB, PhotosynthesisC, RespirationD, Germination4、What is the English word for "草药"?A, Herbal medicineB, SpiceC, FlowerD, Plant5、How many teeth does an adult human typically have?A, 20B, 24C, 28D, 326、What do we call the process where plants take in carbon dioxide?中文解释:我们称植物吸收二氧化碳的过程为?A, RespirationB, PhotosynthesisC, Germination7、What is the English translation of "沙子"?A, DustB, GravelC, SandD, Soil8、What is the English meaning of "地板"?A, CeilingB, FloorC, RoofD, Wall9、What is the main purpose of a comb?A, To cut hairB, To style hairC, To clean hairD, To dry hair10、This person is a dedicated researcher. 这个人是一位敬业的研究员。
小学上册第10次英语第四单元暑期作业(含答案)
小学上册英语第四单元暑期作业(含答案)英语试题一、综合题(本题有100小题,每小题1分,共100分.每小题不选、错误,均不给分)1.In summer, we like to swim in the ________ (泳池).2.I saw a ________ hopping along the path.3.Which holiday celebrates the new year?A. ChristmasB. HalloweenC. New Year's DayD. Thanksgiving答案: C4.The _______ (The Montgomery Bus Boycott) was led by Martin Luther King Jr.5.My grandma likes to tell ____.6.My brother is a __________ student. (优秀)7.__________ (温室气体) contribute to climate change through chemical reactions in the atmosphere.8.The sun is ______ (setting) behind the hills.9.The drawer is ________.10.The _____ (rainbow/umbrella) is colorful.11.My _____ (姐姐) is a great cook.12.The ____ is a small creature that loves to eat leaves.13.My cousin is a ______. She enjoys solving problems.14.The ancient Greeks created ________ to tell stories about their gods.15.The _______ (Socrates) is considered one of the founders of Western philosophy.16.Which animal says "moo"?A. DogB. CatC. CowD. Duck答案: C. Cow17.What is the name of the famous bear in a children's story?A. Winnie the PoohB. Paddington BearC. BalooD. Yogi Bear答案:A18.The ______ (繁茂的) vegetation is beautiful in the spring.19.What is the name of the longest river in the world?A. AmazonB. NileC. YangtzeD. Mississippi答案:B20.The ________ (人工湖) provides water for irrigation.21.The _____ (植物文化遗产) enriches human history.22.I enjoy ______ in the garden.23.The Earth's climate is affected by its ______ and position in space.24.I want to _______ (学习)如何制作。
小学上册第10次英语第3单元暑期作业
小学上册英语第3单元暑期作业英语试题一、综合题(本题有100小题,每小题1分,共100分.每小题不选、错误,均不给分)1. (Columbus) Exchange refers to the trade between the Americas and Europe. The ____2.Pine trees have ______ (针叶) instead of broad leaves.3.What do you call the round fruit that is red or green?A. OrangeB. AppleC. BananaD. GrapeB4.Which planet is known as the Red Planet?A. EarthB. MarsC. VenusD. MercuryB5.What is the name of the spacecraft that took humans to the moon?A. DiscoveryB. ApolloC. GeminiD. Voyager6.The ______ (小鸭子) waddles after its mother to the ______ (水边).7.The __________ (Renaissance) was a period of great cultural revival in Europe.8.My best friend is very _______ (形容词). 她总是 _______ (动词).9.Where does the President of the United States live?A. The White HouseB. The CapitolC. The PentagonD. The CourthouseA10.Animals that hunt other animals for food are called __________.11.We learn about different ________ (洲) in geography class.12.The _______ of a wave can be visualized using a graph.13.What is the name of the famous American musician known for "Lose Yourself"?A. EminemB. Jay-ZC. Kanye WestD. 50 CentA14.The _______ (小狼) plays with its siblings in the den.15. A _____ (小马) loves to run and play in the pasture.16. A _______ is a reaction that produces sound energy.17.The ____ is an animal that loves to dig.18.The _____ (historical) records help us learn about the past.19.My favorite ________ is blue.20.My family goes camping in the ______.21.My cousin has a __________狗. (可爱的)22. A chemical that can donate a proton is called a ______.23.The __________ (历史的真实) can be difficult to face.24.The ancient Egyptians are known for their ________ (建筑成就).25.An alkali is a type of _____.26.The dog is ___ (barking) at the mailman.27.What is the capital of the Democratic Republic of the Congo?A. KinshasaB. LubumbashiC. KisanganiD. Mbuji-Mayi28.The chemical formula for docosahexaenoic acid is ______.29.What do we call the time it takes for the Earth to spin once?A. DayB. MonthC. YearD. Hour30.What do you call the sound a cow makes?A. BarkB. MeowC. MooD. Roar31.The __________ helps some animals to find food.32.Ants work together to build their ______ (巢).33.What is the main color of an orange?A. BlueB. OrangeC. GreenD. Purple34.The __________ (森林) is essential for clean air.35. A _______ is a material that resists electrical current.36.Where do fish live?A. TreesB. HousesC. WaterD. GroundC37.The __________ (全球合作) addresses common challenges.38.What is the capital city of Egypt?A. CairoB. AlexandriaC. LuxorD. Giza39.The __________ (园艺) hobby can be rewarding and enjoyable.40.The __________ was a major turning point in World War II. (诺曼底登陆)41.What is the main temperature unit?A. KelvinB. CelsiusC. FahrenheitD. All of the aboveD42.What do we call the season when flowers bloom?A. WinterB. SpringC. SummerD. Fall43.The badger digs a ______.44.中国的________ (Confucius) 是一位伟大的哲学家。
贵阳“PEP”2024年小学4年级第10次英语第四单元暑期作业(含答案)
贵阳“PEP”2024年小学4年级英语第四单元暑期作业(含答案)考试时间:90分钟(总分:120)A卷一、综合题(共计100题共100分)1. 选择题:What do we call a group of whales?A. PodB. SchoolC. FlockD. Pack2. 听力题:I need to _____ (buy/sell) some groceries.3. 填空题:A cat has excellent ______ (视力) at night.4. 选择题:What do we call the collection of stars that forms a pattern?A. ConstellationB. GalaxyC. NebulaD. Cluster答案: A. Constellation5. 听力题:The __________ of a solution can affect how fast a reaction occurs.6. 听力题:The ____ has a spiny back and curls up when scared.7. 听力题:A _______ can be used to measure the intensity of sound in a room.I like to play with my toy ________ (玩具名称) at the park.9. 填空题:My favorite _________ (玩具) helps me learn new words.10. 选择题:What do we call the time when you wake up?A. MorningB. AfternoonC. EveningD. Night11. 填空题:The ________ (风景) from the mountain top is beautiful.12. 选择题:What is the name of the famous American singer known for "Like a Prayer"?A. MadonnaB. Lady GagaC. Britney SpearsD. Janet Jackson答案:A13. 填空题:A hedgehog can travel up to ______ (三公里) in a night.14. 选择题:What is the name of the famous American singer known as the "King of Rock and Roll"?A. Elvis PresleyB. Chuck BerryC. Little RichardD. Buddy Holly答案:A15. 听力题:The puppy is _____ in the yard. (playing)16. 填空题:I like to play with my ________ when it's sunny outside.17. 填空题:I saw a _______ (狐狸) in my backyard last night.My brother is playing ________.19. 填空题:My favorite sport is _______ (运动). I like to play it with my _______ (朋友).20. 填空题:A ______ (植物分类) helps identify species.21. 填空题:My _______ (兔子) is curious about everything.22. 选择题:What is the national language of China?A. JapaneseB. MandarinC. KoreanD. Thai23. 填空题:I can ______ (有效地沟通) with others.24. 听力题:The pizza is _______ (hot) and cheesy.25. 听力题:The ____ has a sharp sense of smell and likes to hunt.26. 听力题:The road is _______ (bumpy).27. 听力题:The __________ is known for its diverse ecosystems.28. 填空题:The ancient Persian Empire was known for its _____ network.29. 听力题:I like to ________ my friends.30. 选择题:What is the capital of Iceland?A. ReykjavikB. AkureyriC. KeflavikD. Egilsstadir答案:A. Reykjavik31. 填空题:It’s important to be ______ (尊重) towards others and listen to their opinions. Everyone has something valuable to share.32. 听力题:I have _____ (one/two) pet cats.33. 听力题:A mountain range is a series of _______ connected together.34. 填空题:The invention of ________ revolutionized transportation.35. 听力题:Telescopes help us see objects that are very _______ away.36. 听力题:A chemical reaction can release energy in the form of _____.37. 选择题:What do we call the study of weather?A. MeteorologyB. BiologyC. ChemistryD. Geography答案:A38. 听力题:Chemical safety is important to prevent _____.39. 选择题:What do we call the science of studying the stars and planets?A. BiologyB. ChemistryC. AstronomyD. Physics答案: C40. 听力题:The city of Nuku'alofa is the capital of _______.41. 填空题:A hamster runs on its ______ (跑轮).In the fall, the leaves turn ________ (红色) and ________ (黄色). It looks very ________ (美丽).43. 选择题:What do you call the part of the plant that grows underground?A. StemB. LeafC. RootD. Flower答案:C44. 选择题:What is the capital city of Germany?A. BerlinB. MunichC. FrankfurtD. Hamburg45. 听力题:The cat is ______ on the couch. (sleeping)46. 听力题:The Sun is about ______ times larger than the Earth.47. 听力题:The ______ helps fish to swim.48. 选择题:What is the main diet of a panda?A. MeatB. FishC. BambooD. Fruits答案: C49. 选择题:What do we call the act of speaking in front of an audience?A. Public speakingB. PresentationC. OratoryD. All of the above答案: D50. 填空题:George Washington was the first __________ of the United States. (总统)The chemical formula for ammonium phosphate is _______.52. 选择题:How many colors are in a rainbow?A. FiveB. SixC. SevenD. Eight53. 听力题:A _______ can bring joy to your home.54. 选择题:What do we call the main meal of the day?A. BreakfastB. LunchC. DinnerD. Snack答案:C55. 填空题:The first photograph was taken in the ______ (19世纪).56. 选择题:What is the capital of Mongolia?a. Ulaanbaatarb. Erdenetc. Darkhand. Choibalsan答案:a57. 填空题:We visit the ______ (科技馆) to learn about robots.58. 选择题:What is the capital of Rwanda?A. KigaliB. ButareC. GisenyiD. Musanze59. 听力题:She is ___ her lunch. (packing)What is the currency used in the United States?A. EuroB. DollarC. YenD. Pound61. 选择题:Which season is coldest?A. SummerB. AutumnC. WinterD. Spring答案: C62. 听力题:The tree is ______ in the wind. (swaying)63. 听力题:Organic chemistry focuses on compounds containing _____.64. 填空题:The _____ (种植者) takes care of the plants daily.65. 听力题:The concept of black holes was popularized by ______.66. 听力填空题:My dream vacation would be to __________ where I could __________.67. 听力题:The capital city of Norway is __________.68. 听力题:The __________ is a famous national park in the United States.69. 听力题:My brother is _____ (young/old).70. 选择题:What is the capital of Thailand?A. BangkokB. Chiang MaiC. PhuketD. Pattaya答案:A. BangkokThe unit of force is the ______.72. 填空题:A parrot can mimic human ______ (语言).73. 填空题:The _____ (兔子) is quick on its feet.74. 填空题:My friend loves to explore __________ (新想法).75. 听力题:Light travels at a speed of approximately ______ kilometers per second.76. 填空题:I have a special ________ that makes me feel happy.77. 填空题:My favorite outdoor activity is _______ (钓鱼).78. 听力题:A chemical change cannot be easily _____ back.79. 填空题:I saw a _____ (鳄鱼) at the zoo.80. 填空题:The ______ (鲸鱼) can be seen swimming in the ocean.81. 填空题:A ________ (生物多样性保护) is crucial for health.82. 听力题:The fish are swimming in the ___ (pond/aquarium).83. 选择题:What is the opposite of 'happy'?A. JoyfulB. SadC. ExcitedD. Angry答案:BI love to drink __________ on a cold day. (热饮)85. 选择题:What do you call a tree that loses its leaves in the fall?A. EvergreenB. DeciduousC. ConiferousD. Palm答案:B86. 填空题:The __________ (文化交流) fosters understanding and cooperation.87. 听力题:My aunt enjoys baking ____ (cookies) for the holidays.88. 选择题:What is the term for a group of fish?A. SchoolB. PackC. FlockD. Colony答案:A89. 选择题:What is the color of an apple?A. PurpleB. RedC. YellowD. All of the above90. 填空题:My aunt is a very talented ____.91. 听力题:Lunar modules were used during the Apollo missions to land on the ______.92. 听力题:I want to ________ (enhance) my knowledge.93. 听力题:A solid has a __________ shape.94. 听力题:I like to _____ my lunch at school. (eat)What do you call the place where you go to borrow books?A. BankB. LibraryC. SchoolD. Park答案: B96. 选择题:How many Earth years does it take for Neptune to orbit the sun?A. 15B. 84C. 165D. 25097. 填空题:The chemical formula for table sugar is __________ (C12H22O11).98. 听力题:In a chemical reaction, reactants are transformed into ______.99. 听力题:Chemicals can change state from solid to liquid through _____ (melting).100. 填空题:I saw a ________ making a nest in the bushes.。
2024年08版小学三年级下册第10次英语第4单元暑期作业(含答案)
2024年08版小学三年级下册英语第4单元暑期作业(含答案)考试时间:90分钟(总分:100)B卷考试人:_________题号一二三四五总分得分一、综合题(共计100题共100分)1. 填空题:The __________ (文化对话) fosters peace.2. 听力题:A solution that can conduct electricity is called an ______.3. 选择题:What do we call the study of insects?A. EntomologyB. EcologyC. BiologyD. Zoology答案:A. Entomology4. 选择题:What is the name of the fairy tale character who lived in a glass castle?A. CinderellaB. RapunzelC. Sleeping BeautyD. Elsa答案:D5. 选择题:What is the name of the largest ocean on Earth?A. AtlanticB. IndianC. ArcticD. Pacific答案: D6. 选择题:What is the opposite of full?A. EmptyB. HalfC. WholeD. Complete7. 听力题:We are going to a ______ (birthday) party this weekend.8. 填空题:I saw a ________ chasing a squirrel.9. 听力题:My dad is ______ (working) from home today.10. 选择题:What is the name of the famous space telescope?A. HubbleB. KeplerC. GalileoD. James Webb答案:A11. 听力题:The child is ___ a song. (singing)12. 填空题:Cats often like to _______ (玩耍) with yarn.13. 选择题:Which animal is famous for having a long neck?A. ElephantB. GiraffeC. LionD. Zebra答案:B. Giraffe14. 听力题:__________ is the substance that dissolves in a solution.15. 选择题:What is the fastest land animal?a. Cheetahb. Lionc. Horse答案:a16. 选择题:Which holiday celebrates the new year?A. ChristmasB. HalloweenC. New Year's DayD. Thanksgiving答案: C17. 填空题:I love my ________ (玩具名称) because it’s so cute.18. 听力题:Galaxies can be spiral, elliptical, or ______.19. 填空题:The _____ (植物适应) can reveal insights into evolution.20. 填空题:A _____ (植物教学) can engage students in science.21. 听力题:A ______ has a pouch for carrying its baby.22. 填空题:A dolphin is a playful _______ that loves to swim and leap through the waves.23. 填空题:My _______ (金鱼) swims gracefully.24. 听力题:The ______ is known for its strength.25. 填空题:The __________ (人际关系) are important for happiness.26. 填空题:A ____(tsunami) is a large ocean wave caused by underwater earthquakes.27. 选择题:What do you call a person who makes bread?A. BakerB. ChefC. Cook答案:A28. 填空题:A ______ (植物标本) can teach us about biodiversity.29. 听力题:In a chemical reaction, the total number of atoms of each element must be the same on both _____.30. 填空题:The ______ (蟋蟀) is often heard at night.31. 填空题:The ancient Greeks held ________ to celebrate athletic competition.32. 选择题:Which animal is known as the "king of the jungle"?A. ElephantB. LionC. TigerD. Bear答案:B33. 填空题:My teacher has a __________ (特别的) way of teaching.34. 选择题:What is 10 3?A. 7B. 6C. 5D. 4答案:A35. 听力题:The pH scale measures how acidic or ______ a substance is.36. 选择题:What is the visible surface of the sun called?A. CoreB. AtmosphereC. PhotosphereD. ChromosphereWhat do we call a scientist who studies the earth’s crust?A. GeologistB. ArchaeologistC. PaleontologistD. Environmental Scientist38. 选择题:Which animal is known as the king of the jungle?A. ElephantB. LionC. TigerD. Bear39. 填空题:The _____ (果实) from trees can be harvested in fall.40. 选择题:Which of these is a large body of water?A. RiverB. LakeC. OceanD. Pond41. 选择题:Which animal has a long neck?A. ElephantB. GiraffeC. DogD. Cat答案:B42. 听力题:Chemical changes often involve the formation of _____ or new substances.43. 填空题:The _____ (植物生长阶段) varies from species to species.44. 选择题:What do you call a young dog?A. KittenB. PuppyC. CubD. Calf答案: BWhat is the capital city of Mongolia?A. UlaanbaatarB. ErdenetC. DarkhanD. Choibalsan答案: A46. 填空题:I enjoy learning about different ______ (文化习俗). It helps me understand the diversity of our world.47. 选择题:What do we call the act of achieving proficiency?A. MasteryB. SkillC. CompetenceD. All of the Above答案:D48. 填空题:The capital of Gabon is ________ (利伯维尔).49. 填空题:The capital of Austria is ________ (维也纳).50. 填空题:My cousin loves to play ____.51. 听力题:Saturn's rings are made of ice and small ______.52. 听力题:The __________ of an atom is determined by its protons.53. 填空题:She is a _____ (志愿者) who helps at animal shelters.54. 听力题:I write stories in my ___ (notebook).55. 小鸽子) coos softly in the morning. 填空题:The ___56. 听力题:A __________ is a characteristic that can be measured.This girl, ______ (这个女孩), is passionate about wildlife conservation.58. 听力题:The __________ is the area where most geological activity occurs.59. 填空题:The ________ (生态系统保护) is paramount.60. 选择题:What is 8 x 2?A. 12B. 14C. 16D. 18答案:C61. 填空题:The _______ (猪) is known for its intelligence.62. 听力题:My brother likes to solve ____ (math problems).63. 选择题:What is the name of the famous American singer known for "Ain't No Mountain High Enough"?A. Diana RossB. Aretha FranklinC. Tina TurnerD. Whitney Houston答案:A64. 填空题:The city of Venice is known for its ________ (运河).65. 听力题:We will go _____ the fair next week. (to)66. 填空题:The country known for its festivals is ________ (印度).67. 填空题:I like to visit the ______ with my family.We enjoy _____ (reading) stories.69. 填空题:My dog loves to _______ (游泳) in the lake.70. 填空题:_____ (aloe) is great for soothing skin.71. 填空题:Did you see that _____ (小鸟) singing in the tree?72. 听力题:A __________ can occur when the ground becomes saturated with water.73. 选择题:What do we call a young bear?A. CubB. FawnC. CalfD. Kid答案:A74. 听力题:The baby is _______ (crawling) on the floor.75. 听力题:I enjoy ________ at the beach.76. 填空题:The tarantula spins silk for its _________ (网).77. 选择题:What shape has four equal sides?A. TriangleB. RectangleC. SquareD. Circle答案: C78. 选择题:How many strings does a typical guitar have?A. FourB. FiveC. SixD. Seven答案:C79. 选择题:What do you call the study of living things?A. GeographyB. BiologyC. ChemistryD. Physics80. 填空题:I learned about different _____ (植物类型) in science class.81. 填空题:The _____ (电子玩具) makes sounds.82. 选择题:What is the capital of Uzbekistan?A. TashkentB. SamarkandC. BukharaD. Fergana83. (Norse) mythology features gods like Odin and Thor. 填空题:The ____84. 选择题:What is the capital of Burundi?a. Gitegab. Bujumburac. Ngozid. Rumonge答案:a85. 听力题:A chemical that helps to speed up a reaction is called a ______.86. 填空题:A _____ (种植) is when we put seeds in the ground.87. 选择题:What color is an orange?A. BlueB. OrangeC. GreenD. Purple88. 填空题:I like to ______ (参与) in academic clubs.89. 选择题:What do you call the natural satellite of Earth?A. StarB. MoonC. PlanetD. Comet90. 填空题:A rabbit has long _______ to hear well.91. 填空题:I like to draw ______ (漫画人物) and create my own ______ (故事).92. 听力题:The chemical symbol for selenium is _____.93. 选择题:What is the name of the famous landmark in Egypt?A. Great WallB. Eiffel TowerC. Pyramids of GizaD. Colosseum答案:C94. 填空题:The ________ is a tiny bird that sings beautifully.95. 填空题:The invention of the airplane revolutionized ________.96. 填空题:My ________ (玩具名称) makes funny sounds when I shake it.97. 填空题:I enjoy _______ (骑马) on weekends.98. 选择题:What do we call a picture made by placing pieces of colored paper together?a. Drawingb. Paintingc. Collaged. Sculpture答案:C99. 听力题:The boy plays the ________.100. 填空题:A ___ (小兔) has long ears and a fluffy tail.。
小学上册第10次英语第1单元暑期作业(含答案)
小学上册英语第1单元暑期作业(含答案)英语试题一、综合题(本题有100小题,每小题1分,共100分.每小题不选、错误,均不给分)1.What is the term for the imaginary line that runs parallel to the equator?A. LatitudeB. LongitudeC. MeridianD. Tropic答案:A2.Carbon is essential for all living _____.3.The rabbit has long ______ (耳朵) for good hearing.4.Nebulas are often the birthplace of ______.5.How many sides does a hexagon have?A. 4B. 5C. 6D. 7答案:C6.What is the name of the toy cowboy in "Toy Story"?A. Buzz LightyearB. WoodyC. RexD. Hamm答案:B7.What is the chemical symbol for hydrogen?A. OB. HC. HeD. N答案:B8.The __________ is a famous mountain range in Italy. (阿尔卑斯山)9.What do we call a young person in school?A. StudentB. ScholarC. LearnerD. Pupil10.My mom grows ______ (草莓) in the garden. They taste very ______ (甜).11.I can ______ (适应) to new situations easily.12.Which insect is known for making honey?A. antB. beetleC. beeD. fly答案:C13.我的朋友喜欢 _______ (活动). 她觉得这很 _______ (形容词)14.Which month comes after March?A. FebruaryB. AprilC. MayD. June答案:B15.Oxygen is essential for __________ to occur.16.What do you call a young kangaroo?A. CalfB. JoeyC. KidD. Pup17.The process of saponification produces ______.18.We like to listen to ___. (music)19.The ______ (蓝鲸) is known to be the largest animal ever.20.The Earth is about ______ billion years old.21.What is the main purpose of a seed?A. To grow into a plantB. To produce fruitC. To attract animalsD. To store water答案:A22.The forest is very _______ (神秘的).23.The ________ is a delightful friend to have.24.Australia is known for its _______ animals.25.My cat has a favorite _______ (玩具).26.I have a toy _______ that spins and plays music when you press a button.27.The ancient Romans used _______ for their buildings.28.I enjoy creating games for my toy ____. (玩具名称)29.I love _______ (制作)手工艺品.30.The sun is shining ___. (brightly)31.The ______ (植物分类) helps identify species.32. A ____ lives in a den and is very cunning.33. A __________ is formed when two or more elements combine.34. A panda's diet consists mostly of ______.35.We see a _____ (movie) tonight.36.The _____ (购物) is enjoyable.37.What is the main topic of a story called?A. SettingB. PlotC. ThemeD. Character答案:C38.What is the name of the famous race car driver known for his success in Formula 1?A. Michael SchumacherB. Lewis HamiltonC. Ayrton SennaD. Sebastian Vettel答案:B39. A lizard can change its ______ (颜色) depending on its mood.40.The puppy is very ___ (adorable).41.They are watching a _____ (movie/show) together.42.The _____ (cake/pie) is delicious.43.The process of combustion requires __________ and fuel.44.My favorite hobby is ______ (游戏).45.What do you call a place where you keep animals?A. ZooB. FarmC. ParkD. Garden答案:A46. A __________ is a geological feature that can impact local ecosystems.47.What do we call the application of mathematics to solve real-world problems?A. AlgebraB. GeometryC. CalculusD. Applied Mathematics答案:D48.Keeping my ________ (名词) organized helps me find my toys easily.49. A ________ (海洋) connects continents.50.The chemical symbol for oxygen is ______.51.What is the sum of 2 + 2?A. 3B. 4C. 5D. 652.I love _______ (我的家) because it is very _______ (舒适).53.The falcon swoops down to catch its _________. (猎物)54.The formula for the reaction between an acid and a base is called a ______ equation.55. A mixture that appears uniform throughout is called a ______ mixture.56.The man is very ________.57.The ______ helps fish to swim.58.Road connected ________ (中国与欧洲). The Silk59.I enjoy playing with my ________ blocks.60. A __________ is a major geological feature of the earth.61. A chemical reaction requires a change in ______.62.The teacher is _____ the students. (helping)63.The ______ (植物观察) requires patience and knowledge.64.Which fruit is known as a citrus fruit?A. AppleB. BananaC. OrangeD. Grape65.In a chemical reaction, substances are transformed into new _____ (substances).66.The __________ is a major desert in Australia. (大沙漠)67.My ________ (玩具名称) helps me understand emotions better.68.What do we call the study of the mind and behavior?A. SociologyB. PsychologyC. PsychiatryD. Neurology答案:B Psychology69.What is the currency used in the USA?A. EuroB. YenC. DollarD. Pound70.The sun sets in the _______ (西边).71.I love learning languages. It opens up opportunities to connect with more people. I am currently learning __________ and enjoy practicing it with others.72.What is the capital of the United States?A. New YorkB. Washington,C. Los AngelesD. Chicago答案:B Washington, D.C.73.I made a race track for my ________ (玩具名称).74.What do we call the part of a plant that attracts pollinators?A. PetalB. LeafC. StemD. Root答案:A75.Road was an important trade route between ________ and Europe. The Silk76.__________ are used in the paper industry.77.The children are ___ at the park. (running)78.Can you __________ this word?79.What is the capital of the Philippines?A. ManilaB. CebuC. DavaoD. Iloilo80.I saw a ______ (小马) running in the field. It looked very ______ (快乐).81.The chemical formula for sodium thiocyanate is ______.82.I have a plant that needs a lot of _____ to grow.83.I like to ___ puzzles. (solve)84.What is the main source of energy for the Earth?A. The MoonB. The SunC. The StarsD. The Wind85.I found a ______ (蝴蝶) in the garden yesterday.86.Which animal is known for its long neck?A. ElephantB. GiraffeC. LionD. Kangaroo答案:B87.The process of a solid turning directly into a gas is called _______.88.The owl hunts for ______ (小动物) at night.89.In a reaction, the activation energy is the minimum energy required to start the _____.90.I can ______ (sing) all the lyrics to my favorite song.91.I like to call my teacher . (我喜欢称呼我的老师为)92. A ____ has sharp spines and can protect itself.93.My sister loves to listen to __________ (音乐).94.The chemical formula for aluminum chloride is ______.95. A _____ is a group of stars that is visible in the night sky.96.The ancient Romans had a complex system of ________ (法律).97. A _______ is a large body of saltwater.98.My friend is a ______. He enjoys playing video games.99.What is the term for the amount of space an object occupies?A. MassB. VolumeC. WeightD. Density答案:B100.What do you call a person who makes bread?A. BakerB. CookC. ChefD. Pastry chef 答案:A。
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组长:李涛升 组员:王锐 王文婷 周生强 周子龙 贺志春 王健
单元机组停机前的准备工作有哪些?
高压电动油泵及交直流润滑油泵实 验 做好盘车和顶轴系统的实验 做好主气阀和电动主闸阀的活动等实验 对锅炉受热面进行全面检查和吹扫 按规定进行必要的实验和检查如油枪、重 要的调整门和电动门校对汽包水位计、备 用蒸汽管道预暖等
单元机组停机方法分类
事故停机:在运行中机组发生故障, 危及人身或设备安全而不能继续运 行的停机。 额定参数停机:停运过程中蒸汽参 数随机组负荷的减少。 滑参数停机:可以使机组有快有均 匀的冷却对于停运后需要检修的机 组可缩短从停机到汽轮机开缸的时 间,但锅炉在低负荷燃烧时的稳定 性较差。
单元机组停机方法分类
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严重故障停机:当发生的故障对设备、系 统构成严重威胁时必须立即打闸解列并破 坏真空进行紧急故障停机。 一般故障停机:按规程规定将机组停下来, 不必破坏真空。
单元机组停机前为
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单元机组停机方式有哪些?
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单元机组停运过程可分为正常停机和故障停 机两大类 正常停机分为备用停机、检修停机、额定参 数停机、滑参数停机
故障停机分为一般事故停机、紧急事故停机
单元机组停机方法分类
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备用停机:由于外界负荷减小,经计 划调度,要求机组处于备用状态时的 停机称为备用停机,根据备用时间的 长短备用停机又可分为热备用停机和 冷备用停机。 检修停机:按预定计划进行机组大小 检修以提高或恢复机组运行性能的停 机。
welcome to use these PowerPoint templates, New
处于全开状态有可能会出现卡涩、拒
动等状况,导致机组不能顺利降负荷。
机组停机前准备操作票
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接到机组停机命令后,做好停机前的准备工作: 对锅炉本体及空预器进行一次全面吹灰。 锅炉停运超过7天,应烧空各原煤仓存煤。 上下校对水位一次。 将辅汽联箱汽源切至其它运行机组。 试转交流润滑油泵、直流润滑油泵、顶轴油泵和 盘车电机,确认正常。 检查高低压旁路系统处于热备用状态。 全面检查系统,统计机组缺陷。 停机过程有试验时做好准备工作。