双语12质量检测2
唐山2024年11版小学第12次英语第二单元测验试卷
唐山2024年11版小学英语第二单元测验试卷考试时间：90分钟（总分:140）B卷考试人：_________题号一二三四五总分得分一、综合题(共计100题)1、填空题：My _______ (仓鼠) runs fast on its wheel.2、听力题：A __________ is formed through the accumulation of volcanic ash over time.3、What is the term for a young wolf?A. PupB. CubC. KitD. Whelp答案:A. Pup4、听力题：She is a talented ___. (musician)5、听力题：The parrot is ___ (talking).6、填空题：I have a toy ________ that can bounce.7、听力题：We have a _____ (晚会) planned for the end of the year.8、听力题：Animals that live in trees are called ______.9、填空题：We went ______ (露营) last summer.10、填空题：The ________ can jump high.The rain is ________ (下得很大).12、选择题：Which shape has four equal sides?A. TriangleB. CircleC. SquareD. Rectangle13、What is the name of the fairy tale character who had long hair?A. Snow WhiteB. CinderellaC. RapunzelD. Sleeping Beauty答案:C14、听力题：I want to ________ (run) a marathon.15、填空题：The _____ (大象) is a gentle giant of the animal kingdom.16、What do you call the study of the human body?A. AnatomyB. BiologyC. PhysiologyD. Ecology17、听力填空题：I love exploring new places. Traveling allows me to experience different cultures and meet new people. One place I dream of visiting is __________ because __________.18、听力题：The __________ is a region known for its biodiversity.19、填空题：My mom is my first _______ and best friend.20、听力题：I enjoy ______ (making) crafts at home.21、听力题：The rabbit is ________ in the garden.The _______ (大象) trumpets loudly.23、填空题：The __________ is a famous mountain range in Europe. (阿尔卑斯山)24、填空题：I can ______ (分析) my thoughts critically.25、选择题：What do we call a small, sweet dessert?A. CakeB. CookieC. PieD. All of the above26、填空题：The __________ is a famous mountain in Europe. (阿尔卑斯山)27、What is the capital city of Vietnam?A. Ho Chi Minh CityB. HanoiC. Da NangD. Nha Trang答案:B28、填空题：My uncle is a wonderful __________ (讲故事的人).29、What do we call a person who writes stories?A. AuthorB. ArtistC. MusicianD. Actor答案:A30、Which animal is known for building dams?A. BeaverB. OtterC. MuskratD. Raccoon答案: A31、选择题：What do we call a large animal that lives in the ocean and has a blowhole?B. SharkC. WhaleD. Seal32、填空题：A platypus has webbed ______ (脚).33、听力题：I ride my bike to ___ (school/home).34、选择题：What do we call the art of making sculptures?A. PaintingB. DrawingC. SculptureD. Photography35、听力题：The _____ (森林) is full of wildlife.36、填空题：The _____ (跳棋) game is fun.37、What do you call a long piece of material used for sewing?A. ThreadB. FabricC. YarnD. Wire答案:A38、听力题：The stars are ___ (fading/shining) brightly.39、听力题：We are making ______ (friends) at school.40、听力题：The chemical formula for iodine monochloride is _______.41、听力题：A ____ has a distinctive call and can be loud.42、What is the color of the sun?A. BlueB. YellowD. Purple43、听力题：It is raining ___. (hard)44、What do you call the person who teaches you in school?A. DoctorB. TeacherC. ChefD. Pilot答案:B45、填空题：We have a ______ (新鲜的) fruit stand in our neighborhood.46、听力题：Light takes time to travel across the vastness of _______.47、What is the name of the sweet treat made with cream and sugar?A. PuddingB. FlanC. CustardD. Whipped Cream答案: C48、What do you call a group of wolves?A. PackB. FlockC. GaggleD. Murder答案:A49、听力题：My sister plays the _____ (钢琴).50、What is the name of the planet we live on?A. MarsB. EarthC. VenusD. Jupiter答案:B51、听力题：She can ___ (sing/dance) very well.My favorite thing to do on a sunny day is ______.53、填空题：A _______ (小马) trots along the path.54、Which ocean is the largest?A. AtlanticB. IndianC. ArcticD. Pacific答案:D. Pacific55、填空题：The _____ (生长速度) of plants varies widely.56、What is the main ingredient in a salad?A. FruitB. VegetablesC. MeatD. Bread答案: B57、听力题：There is a __________ in the sky.58、听力题：We will have a ___. (picnic) next week.59、听力题：A hamster is a small ______.60、Which of these is a primary color?A. PurpleB. OrangeC. GreenD. Red答案:D61、What is the capital of China?A. ShanghaiB. BeijingC. Hong KongD. Taipei答案:BChemical bonds can be broken and formed during ______.63、听力题：The state of matter with a fixed volume but no fixed shape is a ______.64、填空题：The flowers are ________ (香气扑鼻).65、听力题：She likes to ________ books in the library.66、ts can ______ (吸收) toxic substances from the soil. 填空题：Some pla67、Which fruit is yellow and curved?A. AppleB. BananaC. GrapeD. Cherry68、What do we call the phenomenon when the Moon blocks the Sun?A. Lunar eclipseB. Solar eclipseC. SupermoonD. Blue moon69、sustainable urban design) prioritizes ecological balance. 填空题：The ____70、填空题：My toy ____ is always ready to help me. (玩具名称)71、填空题：My favorite dessert is _______ (蛋糕).72、What do you call a baby koala?A. JoeyB. CubC. KitD. Pup73、听力题：Astronomers use spectroscopy to analyze the ______ of stars.A wave's speed is determined by the medium through which it ______.75、填空题：The ______ (青蛙) has long legs for jumping.76、听力题：The boy plays the ________.77、听力题：The cat watches the _____ fluttering butterfly.78、填空题：I take care of my _____ every day.79、填空题：My brother loves to __________ (参加) science fairs.80、What do you call a series of related events?A. HistoryB. TimelineC. SequenceD. Process答案: C81、填空题：My __________ likes gardening. (妈妈)82、选择题：What do we call a person who studies the ocean?A. Marine biologistB. GeologistC. MeteorologistD. Oceanographer83、填空题：I can ______ (唱) very well.84、填空题：The ______ (小鸡) peeps when it is hungry.85、How many continents are there?A. FiveB. SixC. SevenD. Eight答案：C86、填空题：My aunt is going to have a __________ (宝宝) soon.87、听力题：My aunt is a ______. She works in a hospital.88、听力题：The process of extracting aluminum from ore is called _______.89、听力题：The concept of ecological sustainability ensures the long-term health of ______.90、填空题：The ________ was a famous route for traders in the Middle Ages.91、听力题：We will ________ (travel) next week.92、Which instrument has strings and is played with a bow?A. FluteB. GuitarC. ViolinD. Piano答案:C. Violin93、What do we call the tool we use to measure length?A. RulerB. ScaleC. ProtractorD. Compass94、What is the capital of Thailand?A. BangkokB. PhuketC. Chiang MaiD. Pattaya95、填空题：The ________ (玩具) makes a funny sound when you press it.96、听力题：The building blocks of all matter are ______.97、填空题：I need to _______ (买) some groceries.98、What is the name of the planet known for its rings?A. SaturnB. JupiterC. MarsD. Neptune答案:A99、填空题：I have a toy _____ that can dance.100、听力题：Animals that have scales are typically __________.。
唐山2024年小学第12次英语第2单元全练全测
唐山2024年小学英语第2单元全练全测考试时间：90分钟（总分:120）B卷考试人：_________题号一二三总分得分一、选择题(共计20题，共40分)1、What is the English word for "科学"?A, ScienceB, MathC, HistoryD, Art2、He plays the guitar. 他弹吉他。
A, PianoB, GuitarC, Drums3、What do we call a plant's protective outer cover?我们称植物的保护外层为？A, EpidermisB, CuticleC, BarkD, Leaf4、What is the color of an orange?A, RedB, BlueC, OrangeD, Green5、Which one is NOT a planet in our solar system?A, EarthB, MarsC, SunD, Jupiter6、Which plant is known for its colorful blooms?中文解释：哪种植物以其色彩斑斓的花朵而闻名？A, RoseB, BambooC, Pine7、What do we call the process of planting and growing crops? A, FarmingB, GardeningC, AgricultureD, All of the above8、Which plant is often used for making wine?哪种植物常用于酿酒？A, Grape vineB, OakC, PineD, Maple9、He is a strong swimmer. 他是一位优秀的游泳者。
A, WeakB, StrongC, Slow10、What do you call the first meal of the day?A, LunchB, DinnerC, Breakfast11、Which type of plant has thin and delicate leaves?哪种植物有薄而精致的叶子？A, CactusB, FernC, OakD, Pine12、What do we call a plant that is cultivated for food production?我们称为食物生产而栽培的植物为？A, CropB, WeedC, Ornamental plantD, Flowering plant13、Which animal can fly?A, FishB, BirdC, GoatD, Cat14、What is the English translation of "饭"?A, NoodlesB, RiceC, BreadD, Meat15、What does "姐妹" mean in English?A, BrothersB, SistersC, FriendsD, Relatives16、What is the main ingredient in a quiche?A,EggsB,CheeseC,MeatD,Vegetables17、What is the main color of grass?A, GreenB, BrownC, YellowD, Blue18、Which of these is a primary color?A, OrangeB, PurpleC, BlueD, Green19、What do you call a place where we keep animals? A, GardenB, FarmC, SchoolD, Library20、Which part of the plant is often used for making tea?植物的哪个部分通常用于制作茶？A, LeavesB, RootsC, FlowersD, All of the above二、听力题(共计20题，共40分)1、What is the name of the famous wizard in literature? A, Albus DumbledoreB, MerlinC, GandalfD, Harry Potter2、What is the name of our planet?A, MarsB, EarthC, JupiterD, Venus3、听力填空题：She ___ (write) a short story for her English class.4、What do you call a group of animals living together? A, FlockB, PackC, ColonyD, Herd5、听力填空题：We ___ (help) at the animal shelter.6、听力填空题：A car usually has ______ wheels.7、听力填空题：He ___ (not/finish) his homework on time.8、听录音，选出正确的数字。
成都2024年02版(小学)六年级第12次英语第二单元测验试卷
成都2024年02版(小学)六年级英语第二单元测验试卷考试时间:100分钟（总分:100）考试人：_________题号一二三总分得分一、(选择题)总分:20分(1分/题)1、How do you say "谢谢" in English?a) Welcomeb) Thank youc) Sorry2、What do we use to brush our teeth?A) ForkB) ToothbrushC) SpoonD) Knife3、Which of the following means "钥匙" in English?A. LockB. KeyC. HandleD. Bolt4、What is the English word for "枫树"?A) BirchB) MapleC) PineD) Ash5、Which of these is a sweet treat?A) BroccoliB) CakeC) ChickenD) Spinach6、What do you call the person who fixes cars?A) MechanicB) ElectricianC) CarpenterD) Plumber7、What is the name of the ocean next to the east coast of the USA?A) AtlanticB) PacificC) IndianD) Arctic8、Which fruit is red and round?A) BananaB) CherryC) GrapeD) Lemon9、Which of these is a type of pasta?A) RiceB) SpaghettiC) BreadD) Cereal10、What do you call the time when you eat in the evening?A) BreakfastB) LunchC) DinnerD) Snack11、Which one is a kind of tree?A) OakB) DaisyC) TulipD) Sunflower12、How do you say "家" in English?A) HouseB) HomeC) ApartmentD) All of the above13、阅读短文，根据短文内容，将物品下的序号填入相应的圈内。
小学下册第十二次英语第2单元测验卷(有答案)
小学下册英语第2单元测验卷(有答案)考试时间：80分钟（总分:120）B卷一、综合题(共计100题共100分)1. 填空题：The __________ (历史的对照) highlights contrasts between eras.2. 填空题：The __________ (湿地) is home to many birds.3. 选择题：What tool do astronomers use to observe distant stars?A. MicroscopeB. TelescopeC. BinocularsD. Camera4. 听力题：The smallest unit of an element is called an _______.5. 填空题：A flamingo can be seen standing on one ______ (腿).6. 听力题：I like to draw ______ (pictures).7. 选择题：What do we call the act of telling a story?A. NarrationB. DescriptionC. ExplanationD. Definition8. 选择题：What do we call a group of stars forming a pattern?A. GalaxyB. ConstellationC. NebulaD. Cluster答案: B9. 填空题：My favorite movie is ______.10. 填空题：The _______ (小鸦) is known for its intelligence.11. 选择题：How do you say "你好" in English?A. HelloB. GoodbyeC. PleaseD. Thank you12. 填空题：The first female pharaoh of Egypt was ________ (哈特谢普苏特).13. 填空题：The __________ were known for their impressive architecture. (古埃及人)14. 听力题：I like to eat _____ for lunch. (sandwiches)15. 听力题：My friend has a _____ (puppy/kittens).16. 听力题：A chemical that donates electrons is an ______.17. 选择题：What is the color of grass?A. BlueB. YellowC. GreenD. Purple18. 听力题：I can ______ (count) to .19. 填空题：The __________ (历史的价值) is recognized universally.20. 选择题：What is the name of the famous clock tower in London?A. Elizabeth TowerB. Big BenC. Tower BridgeD. London Bridge答案:B21. 选择题：How do you say "hello" in Spanish?A. BonjourB. CiaoC. HolaD. Olá22. 填空题：Please _______ (安静) in the classroom.23. 选择题：What do we call the plant that produces coffee beans?A. Tea plantB. Cocoa treeC. Coffee treeD. Sugarcane答案:C24. 听力题：The ____ is a big animal that enjoys swimming in rivers.25. 填空题：The _____ (日照) affects plant growth.26. 听力题：She is ___ (helping/ignoring) her friend.27. 选择题：What is the capital of France?A. RomeB. MadridC. BerlinD. Paris28. 选择题：What is the currency used in the UK?A. DollarB. EuroC. PoundD. Yen29. 选择题：What is the main ingredient in a smoothie?A. MilkB. YogurtC. FruitD. Ice答案:C30. community service project) addresses local challenges. 填空题：The ____31. 听力题：A _______ is a mixture where one substance dissolves in another.32. 填空题：My favorite pet is a ______ (狗) that enjoys going for walks.33. 选择题：What do we call a baby horse?A. CalfB. FoalC. KidD. Pup34. 选择题：What do we call a person who studies the psychological effects of trauma?A. Trauma PsychologistB. Clinical PsychologistC. PsychiatristD. Social Worker答案: A35. 听力题：My friend is a ______. He enjoys collecting stamps.36. 选择题：Which animal is known as "man's best friend"?A. CatB. DogC. RabbitD. Bird答案: BWhat do you call the person who cooks food?A. BakerB. ChefC. WaiterD. Server答案:B38. 选择题：Which sport involves a hoop and a ball?A. SoccerB. BaseballC. BasketballD. Tennis答案:C39. 填空题：We should always be ________ (尊重) to others.40. 听力题：My favorite animal is a _____ (lion/turtle).41. 听力题：The Orion constellation is best seen in ______.42. 选择题：What do you call the imaginary line that runs around the Earth at zero degrees longitude?A. EquatorB. Prime MeridianC. International Date LineD. Tropic of Cancer答案:B43. 选择题：What is the name of the famous American singer known for "Crazy"?A. Patsy ClineB. Dolly PartonC. Whitney HoustonD. Carrie Underwood答案:A44. 填空题：I want to have a pet _______ (我想养一只_______).45. 听力题：Spacecraft are designed to withstand the harsh conditions of _______.Which animal says 'meow'?哪种动物会“喵喵”叫？A. DogB. CatC. CowD. Sheep答案: B47. 选择题：What do we call a large mammal that lives in the cold?A. Polar BearB. LionC. GiraffeD. Monkey答案:A48. 选择题：What is 15 + 5?A. 20B. 21C. 22D. 2349. 选择题：What is the capital city of the USA?A. New YorkB. Washington, D.C.C. Los AngelesD. Chicago答案:B50. 填空题：The __________ in summer is often very hot and dry. (天气)51. 填空题：I like to help my dad ________ (洗车).52. 选择题：What is the term for a story that is told to teach a lesson?A. FableB. FolkloreC. MythD. Legend答案：AA baby cat is called a ______.54. 听力题：The city of Manila is the capital of _______.55. 听力题：The chemical formula for copper(II) sulfate is ______.56. 听力题：I want to be a ___ when I grow up. (doctor, run, big)57. 选择题：What is the primary ingredient in sauerkraut?A. CabbageB. CarrotC. OnionD. Beet58. 填空题：I have a toy ________ that can roll.59. 填空题：The butterfly is colorful and _______ (蝴蝶色彩斑斓且_______).60. 听力题：He is a good ________ player.61. 选择题：What do we call the time when the sun is highest in the sky?A. MorningB. NoonC. EveningD. Night62. 填空题：An indoor garden can improve your ______ (空气质量).63. 听力题：The children are playing ________.64. 选择题：What is the opposite of love?A. HateB. LikeC. AdmireD. Appreciate答案:A65. 听力题：The Earth's rotation causes day and ______ (night).66. 选择题：What is the capital of Thailand?A. BangkokB. PhuketC. Chiang MaiD. Pattaya答案:A67. 选择题：What is the capital of Tanzania?A. DodomaB. Dar es SalaamC. ArushaD. Mbeya答案: A68. 听力题：The chemical symbol for scandium is ______.69. 选择题：阅读对话，完成表格。
【九年级】2021-2021初三英语12月质量检测(人教新目标附答案)
【九年级】2021-2021初三英语12月质量检测（人教新目标附答案）2021-2021初三英语12月质量检测（人教新目标附答案）请同学们注意：1、考试卷分试题卷和答题卷两部分，试题卷满分为120分，考试时间为90分钟。
2、所有答案都必须做在答题卷标定的位置上，务必注意试题序号与答题序号对应。
3、考试结束后，只需上交答题卷。
祝同学们取得成功！I．听力部分（25分）一、听短对话，回答问题（每小题1分，共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，并标在试题的相应位置。
听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题。
每段对话仅读一遍。
( )1. What will the weather be like in Shanghai tomorrow?A. Rainy.B. Cloudy.C. Sunny.( )2. When was John born?A. May 7th, 1992.B. May 7th, 1987.C. May 7th, 1997.( )3. Where does the conversation take place?A. At a hospital.B. At a restaurant.C. At a hotel.( )4. How much did the woman pay for the dress?A. $ 250.B. $ 375.C.. $ 355.( )5. Why is the woman having a hard time?A. Food costs more than before.B. Her children eat a lot.C. She has to feed the children.二、听较长对话，回答问题(共6小题，计12分)听下面一段对话，回答第6至8三个小题。
现在，你有15秒的时间阅读这三个小题。
高二12月质检(英语)
时遁市安宁阳光实验学校湛江一中十二月质量检测高二级英语试题第一部分：听力（共两节，满分20分）第一节：听力理解（共15小题；每小题1分，满分15分）请听下面5段对话或独白，选出最佳选项。
请听第1段对话，回答第1至3题。
1. What did the man do last night?A. He drank at a restaurant.B. He saw a film.C. He went toAlice’ house.2. What does the woman suggest the man do at last?A. Go to cinema early.B. Buy a ticket for her.C. Take some tissues with him.3. What can we know from the conversation?A. The man doesn’t like drinking.B. The woman lost her cell phone last night.C. The woman will probably see a film this evening.请听第2段对话，回答第4至6题。
4. What’s the matter with the man’s father?A. He can’t look after himself.B. His left hand can’t be movedC. He feels very lonely.5. What can make the man’s father happy? A. Money. B. Mike’s visit. C. Convenient life.6. Why doesn’t the man’s father come to live with him?A. He doesn’t want to bother his son.B. He can’t often talk with his friends and the villagers.C. It isn’t convenient to live here.请听第3段对话，回答第7至9题。
浙江省台州市双语高级中学2023-2024学年高二上学期12月月末阶段性测试物理试卷2
B.当导体棒速度达到 时加速度大小为
C.导体棒达到稳定状态时，a端电势比b端电势高
D.导体棒达到稳定状态后再下滑的过程，电阻R产生的焦耳热等于导体棒重力所做的功
6.如图所示为回旋加速器的示意图．两个靠得很近的D形金属盒处在与盒面垂直的匀强磁场中，一质子从加速器的A处开始加速，已知D型盒的半径为R，磁场的磁感应强度为B，高频交变电源的电压为U、频率为f，质子质量为m，电荷量为q，下列说法正确的是（）
（4）若某次实验过程中，与光电门1连接的数字计时器先后两次记录的遮光时间分别为 和 ，与光电门2连接的数字计时器先后两次记录的遮光时间分别为 和 ，则验证动量守恒定律的表达式为__________（以向右为正方向，用题目中的物理量符号表示）。
13.如图所示，曲面光滑的轨道 固定在水平地面上，轨道底端的切线方向水平。质量 的小车 紧靠轨道右侧静止于光滑水平地面上，其上表面与轨道底端在同一水平面上。一个质量 可视为质点的物体 由静止从轨道顶端滑下，冲上小车 后经一段时间与小车相对静止并一起运动。已知轨道顶端与底端的高度差 ，物体与小车板面间的动摩擦因数 ，取 ，求：
A.改装的是电压表，接A、C两点量程大
B.改装的是电压表，接A、B'两点量程大
C.改装的是电流表，接A、C两点量程大
D.改装的是电流表，接A、B两点量程大
5.如图所示，相距为L的两根足够长的光滑平行金属导轨与水平面的夹角为θ，上端接有阻值为R的定值电阻，其余电路电阻都不计，匀强磁场垂直于导轨平面向下，磁感应强度大小为B。现将质量为m的导体棒由静止释放，当棒下滑到稳定状态时，速度为v。下列说法正确的是（ ）
A.输电线上通过的电流为25 AB.降压变压器的输入电压为4000 V
金科大联考高二12月质量检测英语
金科大联考高二12月质量检测英语The 12th of December marked a significant milestone for the students of the Gold Science University as they participated in the high school year two quality assessment examination. This comprehensive assessment was designed to evaluate the students' academic progress and identify areas for improvement. The examination covered a wide range of subjects, with English being a crucial component.As the students entered the examination hall, a sense of anticipation and nervousness filled the air. They knew that this assessment would not only test their knowledge but also their ability to apply it in various contexts. The English section of the examination was particularly challenging, as it required the students to demonstrate their proficiency in reading comprehension, writing, and language usage.The reading comprehension portion of the exam challenged the students to analyze and interpret a variety of texts, ranging from academic articles to literary works. The students were required todemonstrate their understanding of the main ideas, supporting details, and the author's purpose. They were also asked to make inferences and draw conclusions based on the information provided in the passages.The writing section of the exam tested the students' ability to compose well-structured and coherent essays. The prompts covered a wide range of topics, from personal experiences to societal issues. The students were expected to organize their thoughts, develop their ideas, and use appropriate language and conventions to convey their message effectively.The language usage section of the exam assessed the students' knowledge of grammar, vocabulary, and sentence structure. The students were required to identify and correct errors in sentences, as well as demonstrate their understanding of idiomatic expressions and word choice.Throughout the examination, the students were challenged to apply their critical thinking skills, problem-solving abilities, and attention to detail. They were required to work efficiently and effectively under the pressure of a timed assessment.As the students completed the examination, a sense of relief and accomplishment washed over them. They knew that their hard workand dedication had paid off, and they were eager to receive their results.The 12th of December quality assessment examination was a testament to the high standards and academic excellence of the Gold Science University. The students' performance on the English section of the exam demonstrated their commitment to their studies and their ability to rise to the challenge.The results of the examination will be used to identify areas where the students need additional support and to develop targeted interventions to help them improve. The university's faculty and staff are dedicated to ensuring that each student reaches their full potential and is prepared for the next stage of their academic journey.In conclusion, the 12th of December quality assessment examination was a significant event in the academic lives of the high school year two students at the Gold Science University. The English section of the exam challenged the students to demonstrate their proficiency in a variety of skills, and their performance on the exam will be used to guide their future learning and development. The university's commitment to academic excellence and student success is evident in the way it approaches these assessments, and the students can be proud of their accomplishments.。
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14.函数 f x sin 2 x 3 cos x
3 （ x 0, ）的最大值是 4 2
。
） C． 24 种 D． 36 15.等差数列 an 的前 n 项和为 S n ， a3 3 ， S 4 10 ，则
2
B． 18 种
海水养殖场进行某水产品的新、 旧网箱养殖方法的产量对比， 收获时各随机抽取了 100 个网箱， 测量各箱水产品的产量 （单 位：kg）某频率分布直方图如下：
x2 y 2 1 上，过 M 作 20.（12 分）设 O 为坐标原点，动点 M 在椭圆 C： 2
x 轴的垂线，垂足为 N，点 P 满足 NP (1) 求点 P 的轨迹方程； (2)设点 Q 在直线 x 3 上，且 OP PQ 1 。证明：过点 P 且垂直于 OQ 的直线 l 过 C 的左焦点 F。
2018-2019 兰州碧桂园国际学校
双语 12 年级学情质量检测（2）
一、选择题：本题共 12 小题，每小题 5 分，共 60 分。在每小题给出的四个选项中，只有一项是符合题目要求的。
A．乙可以知道四人的成绩 C．乙、丁可以知道对方的成绩
B．丁可以知道四人的成绩 D．乙、丁可以知道自己的成绩 ） D．5
2 NM 。
21.（12 分）已知函数 f x ax ax x ln x ，且 f x 0 。
2
(1)求 a ； （1） 设两种养殖方法的箱产量相互独立， 记 A 表示事件： “旧养殖法的箱产量低于 50kg, 新养殖法的箱产量不低于 50kg”， 估计 A 的概率； （2） 填写下面列联表，并根据列联表判断是否有 99%的把握认为箱产量与养殖方法有关： 箱产量＜50kg 旧养殖法 新养殖法 箱产量≥50kg （二）选考题：共 10 分。请考生在第 22、23 题中任选一题作答。如果多做，按所做的第一题计分。 22. [选修 4-4：坐标系与参数方程]（10 分） 在直角坐标系 xOy 中，以坐标原点为极点， x 轴的正半轴为极轴建立极坐标系，曲线 C1 的极坐标方程为 (2)证明： f x 存在唯一的极大值点 x0 ，且 e
（1）求 cos B ； （2）若 a c 6 ， ABC 的面积为 2 ，求 b 。 18.（12 分）
1 AD, BAD ABC 90o , E 是 PD 的中点。 2
（1）证明：直线 CE / / 平面 PAB； （2）点 M 在棱 PC 上，且直线 BM 与底面 ABCD 所成角为 45o ， 求二面角 M AB D 的余弦值。
） B． 3 C．
2.设集合 1, 2, 4 ， x x 4 x m 0 。若 1 ，则 （ A． 1, 3 B． 1, 0 C． 1,3
2
D．
2 3 3
3.我国古代数学名著 《算法统宗》 中有如下问题： “远望巍巍塔七层， 红光点点倍加增， 共灯三百八十一， 请问尖头几盏灯？” 意思是：一座 7 层塔共挂了 381 盏灯，且相邻两层中的下一层灯数是上一层灯数的 2 倍，则塔的 顶层共有灯（ A． 1 盏 ） B．3 盏 C．5 盏 D．9 盏
10.已知直三棱柱 C 11C1 中， C 120 ， 2 ， C CC1 1 ，则异面直线 1 与 C1 所成
角的余弦值为（ A．
） B．
3 2
15 5
x 1
C．
10 5
）
D．
3 3
4.如图，网格纸上小正方形的边长为 1，粗实线画出的是某几何体的三视图，该几何体由一平面 将一圆柱截去一部分所得，则该几何体的体积为（ A． 90 B． 63 C． 42 ） D． 36
11.若 x 2 是函数 f ( x ) ( x ax 1)e A. 1 B. 2e 3
的极值点，则 f ( x ) 的极小值为（ C. 5e 3
D.1
12.已知 ABC 是边长为 2 的等边三角形，P 为平面 ABC 内一点，则 PA ( PB PC ) 的最小是（ A. 2 B.
S
k 1
n
1
k
。
16.已知 F 是抛物线 C : y 8 x 的焦点， M 是 C 上一点， FM 的延长线交 y 轴于点 N 。若 M 为 FN 的中点， 则 FN 。
三、解答题：共 70 分。解答应写出文字说明、解答过程或演算步骤。第 17~21 题为必做题，每个试题考生都 必须作答。第 22、23 题为选考题，考生根据要求作答。
）
2 x 3 y 3 0 5. 设 x ， y 满足约束条件 2 x 3 y 3 0 ，则 z 2 x y 的最小值是 y 3 0
（ ） B．9 C．1 D．9
3 2
C.
4 3
D. 1
二、填空题：本题共 4 小题，每小题 5 分，共 20 分。 13.一批产品的二等品率为 0.02 ，从这批产品中每次随机取一件，有放回地抽取 100 次， 表示抽到的二等品 件数，则 D 。
5 5
3
3
第 3页/共 4 页
第 4页/共 4 页
8.执行右面的程序框图，如果输入的 a 1 ，则输出的 S （ A． 2 B．3 C．4
3i 1. （ 1 i
A． 1 2i
） B． 1 2i C． 2 i
2
9.若双曲线 C : D． 2 i ） D． 1,5 离心率为（ A． 2
x2 y2 2 2 1 （ a 0 ， b 0 ）的一条渐近线被圆 x 2 y 2 4 所截得的弦长为 2，则 C 的 2 a b
A．15
6.安排 3 名志愿者完成 4 项工作，每人至少完成 1 项，每项工作由 1 人 完成，则不同的安排方式共有（ A． 12 种 种 7.甲、乙、丙、丁四位同学一起去向老师询问成语竞赛的成绩。老师说： 你们四人中有 2 位优秀，2 位良好，我现在给甲看乙、丙的成绩，给乙 看丙的成绩，给丁看甲的成绩。看后甲对大家说：我还是不知道我的成 绩。根据以上信息，则（ ）
第 2页/（共 4 页）
（一）必考题：共 60 分。 17.（12 分）
19.（12 分）如图，四棱锥 P-ABCD 中，侧面 PAD 为等比三角形且垂直于底面 ABCD，
AB BC B ， 2
ABC 的内角 A、B、C 所对的边分别为 a, b, c ，已知 sin A C 8sin 2
（3） 根据箱产量的频率分布直方图，求新养殖法箱产量的中位数的估计值（精确到 0.01） 23.[选修 4-5：不等式选讲]（10 分） 附 ：
K2
n(ad bc)2 (a b)(c d )(a c)(b d )
已知 a 0, b 0, a b 2 。证明： （1） ( a b)( a b ) 4 ； （2） a b 2 。
2
f x0 22 。
cos 4 。
（1） M 为曲线 C1 上的动点， 点 P 在线段 OM 上， 且满足 | OM | | OP | 16 ,求点 P 的轨迹 C2 的直角坐标方程； （2）设点 A 的极坐标为 (2,
) ，点 B 在曲线 C2 上，求 △OAB 面积的最大值。 3