KB2下期中试卷
2022~2023年高二下册期中考试化学题带答案和解析(河北省保定市)
选择题化学在解决能源危机、保护环境和开发新材料等领域有重要作用。
下列做法不正确的是A.开发和使用可降解塑料B.煤燃烧时进行脱硫脱硝处理C.推广使用太阳能和风能D.就地焚烧秸杆还灰于田【答案】D【解析】A. 开发和使用可降解塑料，可减少“白色污染”，故A正确；B. 煤燃烧时进行脱硫脱硝处理，降低二氧化硫和氮氧化物的排放，减少酸雨，故B正确；C. 推广使用太阳能和风能，减少化石燃料的燃烧，减少二氧化碳排放，故C正确；D. 植物秸秆就地焚烧，会产生大量的烟，造成空气污染，故D错误；选D。
选择题用块状碳酸钙与稀盐酸反应制取二氧化碳气体，下列可以降低反应速率的措施是A. 加热B. 加入浓盐酸C. 加入蒸馏水D. 将块状碳酸钙固体粉碎【答案】C【解析】A. 加热反应速率加快，A错误；B. 加入浓盐酸增大氢离子浓度，反应速率加快，B错误；C. 加入蒸馏水氢离子浓度降低，反应速率减小，C正确；D. 将块状碳酸钙固体粉碎增大反应物接触面积，加快反应速率，D错误，答案选C。
选择题下列有机物的名称和结构简式都正确的是A.2－甲基丁烷：B.α－胺基丙酸：C.硬酯酸甘油脂：D.苯甲酸：【答案】A【解析】A. 2－甲基丁烷的结构简式是，故A正确；B. 的名称是α－氨基丙酸，故B错误；C. 的名称是硬脂酸甘油酯，故C错误；D. 苯甲酸的结构简式是，故D错误；选A。
选择题某化学研究小组探究外界条件（催化剂、压强、温度）对化学反应mA(g)+nB(g)qC(g)的速率和平衡的影响图像如图所示，下列判断正确的是A.由图可知，T1B.由图可知，该反应m+nC.图中，点3的反应速率：v正>v逆D.图中，若m+n=q,则曲线a一定使用了催化剂【答案】C【解析】A. 根据“先拐先平”，可知T1q，故B错误；C. 图中点3的转化率小于同温下的平衡转化率，说明点3反应正向进行，反应速率：v正>v逆，故C正确；D.曲线a速率加快、平衡没移动，若m+n=q，曲线a使用了催化剂或加压，故D错误；选C。
KB2期中测试题(马文婷80份周天要)
KB2期末考试题班级：姓名：第一部分：听力（25分）一．Listen and color the stars. （8分）二．Listen and tick the box. （4分）( )1. A. B. C.( )2. A. B. C.( )3. A. B. C.( )4. A. B. C.2. Listen and draw lines. （6分）第二部分：笔试（75分）一、选择填空。
（5分）1.（）Where’s bedroom？A. myB. mineC. ID. me2. ( ) T-shirt is that?A. WhoseB. Whose isC. Whose are3. ( ) The yellow .A. isB. thatC. one4. ( ) The book is .A . you B. your C. yours5. ( ) Is this T-shirt?A. SimonB. Simon isC. Simon’s二．Writ e“his”or“hers”. (10分)1.The long ruler is .2.The big bag is .3.The white jacket is .4.The grey jacket is .5.The clean shoes are .6.The short ruler is .7.The dirty shoes are .8.The small bag is .9.The skirt is .10.T he white trousers is .三、Read. Circle the toy words. Write. (10分)Suzy’s got a kite and a doll. Simon’s got a robot and a lorry. Lenny’s got a train and a monster. Meera’s got an orange camera and a car. Stella’s got a computer game. Alex has got a big yellow watch and a bike. 四、Write the words. (20分)sofa mummy plane bookcase teacher grandma baby kite desk lorry grandpa playground cousin bath robot board mirror boat lamp daddy bed ruler doll phone 家庭类：家人称呼：玩具类：学校：五、阅读短文，判断对错。
广东省广州市禺山高级中学2023-2024学年高一下学期期中考试数学试卷(含简单答案)
广州市禺山高级中学2023-2024学年高一下学期期中考试数学试卷注意事项：1、本试卷分第1卷（选择题）和第2卷（非选择题）两部分．答题前，考生务必将自己的姓名、考号、座位号、学校、班级等考生信息填在答题卡上．2、回答第1卷时，选出每个小题答案后，用铅笔把答题卡上对应题目的答案标号涂黑．如需改动，用橡皮擦干净后，再选涂其他答案标号，写在本试卷上无效．3、回答第2卷时，将答案写在答题卡上，写在本试卷上无效．4、考试结束后，将本试卷和答题卡一并交回．第1卷一、单选题：本题共8小题，每小题5分，共40分．在每小题给出的选项中，只有一项是符合题目要求的．1. 已知i 是虚数单位，复数，则的虚部为（）A. 1B. 2C. iD. 2. 已知条件，条件，则p 是q 的（ ）A. 充分不必要条件 B. 必要不充分条件C. 充分必要条件D. 既不充分也不必要条件3. 已知角的终边过点(4，－3)，则＝( )A.B. C.D. 4. 如图，在中，是的中点，若，则实数的值是A.B. 1C.D.5. 若，，，则大小关系是（ ）的2i z =+i z ⋅2i:240p x ->2:560q x x -+<θcos()πθ-3535-4545-ABC ∆12AN AC P = ，BN 14AP mAB AC =+m 1412321.20.9a =0.91.2b = 1.2log 0.9c =,,a b cA. B. C. D. 6. 已知单位向量满足，则与的夹角为A.B.C.D.7. 沙漏是我国古代的一种计时工具，是用两个完全相同的圆锥顶对顶叠放在一起组成的（如图）．在一个圆锥中装满沙子，放在上方，沙子就从顶点处漏到另一个圆锥中，假定沙子漏下来的速度是恒定的．已知一个沙漏中沙子全部从一个圆锥中漏到另一个圆锥中需用时1小时．当上方圆锥中沙子的高度漏至一半时，所需时间为（ ）A.小时 B.小时 C.小时 D.小时8. 已知函数，若，则实数的取值范围是（ ）A B. C. D. 二、多选题，本题共3小题，共18分．在每小题给出的选项中，有多项符合题目要求．9. 水平放置的的直观图如图所示，其中，，那么原是一个（ ）A. 等边三角形B. 等腰三角形C. 三边互不相等的三角形D.10. 的内角A ，B ，C 的对边分别为，则（ ）A. B. .a b c>>c b a >>b a c >>c a b>>,a b3a b +=a b 6π4π3π2π12783423()222,02,0x x x f x x x x ⎧+≥=⎨-<⎩()22()f m f m ->m (2,1)-(,1)(2,)-∞-⋃+∞(,2)(1,)-∞-+∞ (1,2)-ABC V 1B O C O ''''==A O ''=ABC V ABC V π,,,2,3a b c a b A ===3c =sin B =C. D.外接圆的面积为11. 已知函数（，，）的部分图象如图所示，下列说法正确的是（ ）A. 函数的最小正周期为B. 函数的图象关于直线对称C. 函数图象向右平移个单位可得函数图象D. 若方程在上有两个不等实数根，，则．第2卷三、填空题：本题共3小题，每小题5分，共15分．12. 已知，，则______．13. 已知中，，，，则__________．14. 圆锥被一平面所截得到一个圆台，若圆台的上底面半径为2cm ，下底面半径为3cm ，圆台母线长为4cm ，则该圆锥的侧面积为_______cm 2.四、解答题：本题共5小题，共77分．解答应写出文字说明，证明过程或演算步骤．15. 在中，角所对边分别为，，，且.（Ⅰ）求角的值；（Ⅱ）若，，求的面积.16. 已知：向量．的的sin C =ABC V 7π3()()sin f x A x =+ωϕ0A >0ω>π2ϕ<()f x π()f x 5π12x =-()f x π62sin y x =()()R f x m m =∈ππ,63⎡⎤-⎢⎥⎣⎦1x 2x ()121cos 2x x +=π,π2α⎛⎫∈⎪⎝⎭3sin 5α=sin 2α=ABC V 5a =8b =60C = BC CA ⋅=ABC V ,,A B C a b c 222a c b ac +=-B a =3b =ABC V (3,2),(1,2),(4,1)a b c ==-=（1）求；（2）求夹角的余弦值；（3）若，求实数值．17. 已知函数.（1）求的值；（2）判断函数在区间上的单调性，并用定义加以证明.18. 如图，在正四棱柱中，，是的中点.（1）求证：平面；（2）若正四棱柱的外接球的表面积是，求三棱锥的体积.19. 的内角，，的对边分别是，，，已知．（1）求；（2）若是锐角三角形，，求周长的取值范围．的a b c +-,a b()a kb c +∥k 1()2x f x x +=+[(1)]f f ()f x (2,)-+∞1111ABCD A B C D -12AA AD =M 1DD 1//BD MAC 24π1D MAC -ABC V A B C a b c sin cos c B b A =+B ABC V 3b =ABC V广州市禺山高级中学2023-2024学年高一下学期期中考试数学试卷简要答案第1卷一、单选题：本题共8小题，每小题5分，共40分．在每小题给出的选项中，只有一项是符合题目要求的．【1题答案】【答案】B【2题答案】【答案】B【3题答案】【答案】D【4题答案】【答案】C【5题答案】【答案】C【6题答案】【答案】C【7题答案】【答案】B【8题答案】【答案】A二、多选题，本题共3小题，共18分．在每小题给出的选项中，有多项符合题目要求．【9题答案】【答案】ABD【10题答案】【答案】ABD【11题答案】【答案】AB第2卷三、填空题：本题共3小题，每小题5分，共15分．【12题答案】【答案】##【13题答案】【答案】【14题答案】【答案】四、解答题：本题共5小题，共77分．解答应写出文字说明，证明过程或演算步骤．【15题答案】【答案】（Ⅰ）【16题答案】【答案】（1（2（3）【17题答案】【答案】（1）（2）函数在区间上单调递增，证明略.【18题答案】【答案】（1）证明略 （2）【19题答案】【答案】（1）（2）2425-0.96-20-36π120B ︒=59k =-58()f x (2,)-+∞433B π=(3,9⎤+⎦。
2023年四年级英语(下册)期中试卷及参考答案
2023年四年级英语(下册)期中试卷及参考答案题序一二三四五六七八总分得分（满分：100分时间：60分钟）一、从下列每组单词中选出不同类的一项。
（10分）1、（）A．first B．second C．thirty2．（）A．breakfast B．music class C．dinner3．（）A．horse B．rainy C．sunny4．（）A．coat B．umbrella C．shirt5．（）A．carrot B．cow C．hen二、选出下列各组单词中画线部分的读音不同的一项。
（10分）1．（）A．cake B．hat C．face2．（）A．not B．note C．lot3．（）A．use B．cute C．duck4．（）A．like B．rice C．big5．（）A．bed B．she C．we三、给下列图片选择对应的单词。
（10分）A．brush B．coffee C．socks D．Australia E. Canada 1．( )2．( ) 3.( ) 4．( )5．( )四、单项选择。
（20分）1、Welcome ________ our school.( )A．at B．to C．into2、_____ flying a kite in the park.( )A．His B．He C．He’s3、What subject do you like ________?( )A．well B．best C．good4、It’s time ______ get up. ( )A．to B．for C．on 5、—Would you like a sweet, Bobby?( )—_____.A．Yes, I would B．No, I don’t C．No, thank you 6、I want two _______ of milk. ( )A．boxs B．box C．boxes7、What _______ he want? ( )A．does B．do C．is8、Do you often have music lessons on ________?( ) A．weekend B．weekends C．this weekend 9、Look! We have ________ pencils.( )A．fivety B．fifty C．fourty10、You can use a ______ for soup. ( )A．fork B．spoon C．knife五、情景交际，选出正确的一项。
小学下册L卷英语第2单元期中试卷
小学下册英语第2单元期中试卷英语试题一、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.I like to play ______ (basketball) with my friends.2.The alligator lives in the _________. (沼泽)3.What do we call the movement of water in the ocean?A. CurrentB. WaveC. TideD. RipplesA4.The ocean is ________ (宽广).5.How many colors are in the rainbow?A. 6B. 7C. 8D. 9B6.He is wearing a cool ___. (jacket)7.I like to ______ my friends on weekends. (visit)8. A flamingo stands on one leg to ______ (平衡).9.During the holidays, I want to travel to _______ (地方). I will take lots of _______ (名词) and enjoy the _______ (活动).10.The process by which plants absorb carbon dioxide is called ______.11.Where does the President of the United States live?A. The White HouseB. The CapitolC. The PentagonD. The CourthouseA12.The elephant is the largest land ______ (动物).13.trial Revolution started in __________ (英国). The Iron14.What is the most common color of an orange?A. GreenB. YellowC. OrangeD. RedC15. A ________ (海洋) connects continents.16.What is the capital of Switzerland?A. BernB. ZurichC. GenevaD. LucerneA17.The fox is known for being ______ (狡猾).18.What is the color of an apple?A. OrangeB. PinkC. YellowD. Red19.I enjoy visiting the ________ (动物园) during summer.20.My uncle tells the best __________ (笑话).21.The __________ (历史的探讨) fosters collaboration.22.An oxidizing agent is a substance that ________ electrons.23.I love to bake ______ (饼干) with my mom. The kitchen smells ______ (香甜) when they are in the oven.24.What do we call a place where you can see many different kinds of animals?A. ZooB. AquariumC. MuseumD. ParkA25.What is the process of changing from a caterpillar to a butterfly called?A. MetamorphosisB. EvolutionC. TransformationD. Development26.The _____ (采摘) of fruits is a fun summer activity.27.My cousin is very __________ (适应性强).28.The __________ is a hot, dry area with sand and little rain.29.The cat is sleeping on the ______ (沙发). It looks very ______ (舒服).30.I enjoy _____ (写作) in my journal.31.The flower grows from a ______.32.What is the capital of Greenland?A. NuukB. SisimiutC. IlulissatD. QaqortoqA33.She is a _____ (设计师) who focuses on interior spaces.34.I enjoy ______ (与) my friends at school.35.What do you use to cut paper?A. KnifeB. ScissorsC. RulerD. Tape36.How many sides does a triangle have?A. 3B. 4C. 5D. 637.The athlete is very _____ (勤奋) and practices every day.38.What is the main ingredient in bread?A. WaterB. YeastC. FlourD. SugarC Flour39.At school, my favorite subject is __________ because I like __________.40.She is ___ (happy) today.41.How do you say "hello" in Arabic?A. BonjourB. SalamC. HolaD. Ciao42.The owl can rotate its head almost ______ (完全) around.43.The teacher cultivates ______ (创造力) in her classroom.44.The chemical symbol for sodium is ______.45.What is the sum of 2 + 2?A. 3B. 4C. 5D. 646.One thing I love about nature is __________. It is so beautiful to see __________ in the park. I enjoy going for walks and listening to the __________.47.What do you call the clothing worn on your head?A. HatB. ShirtC. PantsD. Shoes48.The __________ (历史的深刻) inspires thought.49.How many legs does an insect have?A. SixB. EightC. FourD. TwoA50.My sister's favorite animal is a ______ (海龟).51.What do we call a baby goat?A. KidB. LambC. PuppyD. Calf52.What is the most common gas in the Earth's atmosphere?A. OxygenB. NitrogenC. Carbon DioxideD. Argon53.What do you call the practice of keeping bees?A. HorticultureB. ApicultureC. SericultureD. AquacultureB54. A lizard can ______ its tail.55.I love _____ (admiring) the beauty of nature.56.I enjoy ______ new places. (exploring)57.I ride the bus to ___ (school/home).58.She has a ________ (cat) at home.59.My dad _____ the car every Sunday. (washes)60.The __________ is the second largest continent by land area.61.What is the sound of a dog?A. MeowB. BarkC. RoarD. MooB62.I see butterflies on the _____.63.What do you call a sweet, cold treat made from ice?A. SlushB. Snow coneC. Ice creamD. All of the aboveD64.The bumblebee buzzes around the ____.65.What is the capital of Argentina?A. Buenos AiresB. SantiagoC. LimaD. BogotaA66.My ________ (姐姐) loves to bake cookies and cakes.67.The blanket is very ___ (soft/hard).68.How many days are in March?A. 28B. 30C. 31D. 3269.What do you call a young female elephant?A. CalfB. JuniorC. PupD. KidA70.I like to listen to ________ (流行歌曲) on the radio.71. A _______ is a type of bond where electrons are shared between atoms.72.I can ___ (speak) Spanish.73.What do you call a group of wolves?A. PackB. FlockC. HerdD. Colony74.Certain plants can ______ (产生) natural fibers.75.What is the main purpose of the Hubble Space Telescope?A. To study the EarthB. To study the MoonC. To observe distant galaxiesD. To communicate with aliens76.ts grow best in ______ (潮湿) conditions. Some pla77.What type of animal is a dolphin?A. FishB. MammalC. ReptileD. BirdB78.The first country to adopt a national anthem was _______. (荷兰)79.I like to eat ______ for dinner.80.The _______ (Sikhism) is a religion founded in the Punjab region of India.81.We are having ________ (早餐) together.82.The ancient Egyptians used _____ for writing.83._____ (succulents) store water in their leaves.84.I enjoy ___ (watching) the sunset.85.What is the fastest land animal?A. CheetahB. LionC. HorseD. GazelleA86. A ____ is a loyal companion and loves to be around people.87.What is the term for the study of living organisms?A. BiologyB. ChemistryC. PhysicsD. EcologyA88.The ________ was a key treaty that marked the end of hostilities.89. A flower has _____ (花瓣) that are colorful.90.What is the name of the famous artist known for his "The Last Judgment"?A. MichelangeloB. RaphaelC. Leonardo da VinciD. TitianA91.What do we call the study of animal behavior?A. PsychologyB. SociologyC. EthologyD. EcologyC92.The __________ is the line that divides the Earth into eastern and western hemispheres.93.What do you call a person who writes books?A. ArtistB. AuthorC. MusicianD. ChefB94.Trees produce oxygen during the process of ______.95.The _____ (绿化) of cities is important for our health.96. A ____ is known for its hopping abilities and is often found in gardens.97.The _____ (紫罗兰) blooms in spring.98.I like to bake ______ (蛋糕) for special occasions. Decorating them is my favorite part!99.I like to volunteer at local ______ (慈善机构) to help those in need.100.The _______ (蜥蜴) can be very quick.。
邵阳市大祥区2023-2024学年英语四年级第二学期期中经典试题含答案
邵阳市大祥区2023-2024学年英语四年级第二学期期中经典试题（时间：90分钟分数：100分）学校_______ 班级_______ 姓名_______一、单项选择(每题2分,共20分)。
1.—Does Ginger eat cat food? ( )—Yes, it _______.A. eatsB. doesC. eat2.Let’s put ______ on. ( )A. theyB. themC. their3.—A wonderful view! Let’s take a photo! ( )—______A. Why not?B. Good idea!C. A and B.4.Can you write a letter _____ English? ( )A. onB. forC. in5.What subject___ you like best? ( )A. areB. doC. will6.I ________ at 11.30 am after school. ( )A. go back to schoolB. go back homeC. going home7.Those are bird’s eggs. Don’t touch ________. ( )A. itB. themC. they8.—How many ______ are there in a week? ( )—Seven.A. dayB. daysC. today9.Let’s go to the ________ to eat some food. ( )A. homeB. restaurantC. school10.There are twelve ______ in a ______. ( )A.months; yearB. days; yearC. years; month二、读单词，选出不同类的一项(每题2分,共10分)。
湖北省部分重点中学2022-2023学年高一下学期期中联考数学试题
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剑桥少儿英语KB2 期中试卷
蕲春县博宇剑桥英语培训学校期中测试试题姓名班级 KB2 教师占老师分数听力部分一、听录音，选出划线部分字母与其他读音不一样的选项。
(10’)( )1, A, father B, mother C, brother D, teeth( )2, A, horse B, nose C, mouse D, snake( )3, A, it B, six C, five D, big( )4, A, he B, desk C, seven D, elephant( )5, A, pen B, pencil C, pink D, spell二、听录音，将相应的人物名字填入相应的图片下方。
(10’)Mr Star , Mrs Star , Stella , Simon , Suzy .三、听录音，写颜色单词。
(10’)1, This is Suzy`s doll . it`s .2, This is a big apple . it`s .3, This is Simon`s jacket . it`s .4, There is a robot on the wall .5, There is a ruler on the table .笔试部分四、根据图片内容填写Yes或No（15’）1, This is a camera .2, This is a desk .3, These are teachers .4, These are watches .5, There are twelve pens .五、选择正确的答案。
(10’)( ) 1. How old are you ?A, I’m ten . B, I’m fine , thank you . C, I’m young.( ) 2. How many rulers are there?A, It`s purple . B, Eleven . C, Yes , I have.( ) 3. Whose lorry is it ?A, There are two . B, It`s Suzy . C, It`s Suzy`s.( ) 4. What are you doing?A, I can run . B, I’m running . C, Yes , I can.( ) 5. These are .A, robot . B, robot`s . C, robots.六、根据图片写出相应单词。
人教版2022--2023学年度第二学期三年级英语期中测试卷及答案
…○………………内………………○………………装………………○………………订………………○………………线………………○…………………○………………外………………○………………装………………○………………订………………○………………线………………○………………… 学校：______________姓名：_____________班级：_______________考号：______________________人教版2022--2023学年度第二学期期中测试卷三年级 英语本试卷总分100分，考试时间40分钟。
一、听录音，选出你听到的内容。
（10分） ( )1. A. forkB. sockC. soccer ( )2. A. green B. grapes C. glass ( )3. A. four B. your C. fork ( )4. A. tall B. ball C. small ( )5. A. watch B. what C. where ( )6. A. pear B. peach C. touch ( )7. A. nine B. my C. rice ( )8. A. brown B. blue C. balloon ( )9. A. cold B. clock C. color ( )10. A. whiteB. kiteC. nice二、听录音，按你所听到的内容给下列的图片标号。
（9分） 11.________________________ ________________ ________________ ________________三、听问句，选答语。
（9分） ( )12. A. Yes, they are.B. No, they are.C. They’re sad.( )13. A. Yes, we are. B. No, they don’t. C. Yes, they are. ( )14. A. No, they aren’t. B. Yes, they do. C. Yes, they can. ( )15. A. They’re on the bed. B. It’s in the box. C. No, it isn’t. ( )16. A. Yes, I can. B. Yes, we do. C. No, I’m not.( )17. A. Yes, he is.B. No, she isn’t.C. Yes, I am.四、听录音，根据你听到的内容判断下列图片(6分)( )18.题号一二三四五六七八九十十一得分得分……○………………内………………○………………装………………○………………订………………○………………线………………○…此卷只装订不密封……○………………外………………○………………装………………○………………订………………○………………线………………○…( )19.( )20.( )21.( )22.( )23.五、听对话，填上所缺的单词。
湖北省荆门市2023-2024学年英语四年级第二学期期中经典试题含答案
湖北省荆门市2023-2024学年英语四年级第二学期期中经典试题（时间：90分钟分数：100分）学校_______ 班级_______ 姓名_______一、单项选择(每题2分,共20分)。
1.—Where are they going? ( )—They are going to the _________.A. zooB. libraryC. park2.wr__te ( )A. yB. iC. h3.—Can I go outside? ( )—______A. No, you can.B. Yes, you are.C. No, you can't.4.I _______ thin then. Now I _______ fat. ( )A. am; amB. was; wasC. was; am5.—Do you like English? ()—________A. Yes, I do.B. Yes, I am.C. No, I'm not.6.—Is that the art room? ( )—_______A. Yes, he is.B. No, it is.C. Yes, it is.7.They have a basketball lesson after school.选出划线部分发音不同的选项。
( )A. haveB. basketballC. after8.—What time is it now? ( )—________A. What a pity!B. It’s eight o’clock.C. At nine.9.You can see the ______ in the sky. ( )A. boatB. mountainsC. moon10.It will _____ in Beijing tomorrow. ( )A. snowB. snowyC. snows二、读单词，选出不同类的一项(每题2分,共10分)。
2024年全新部编仁爱版小学五年级下册信息技术期中考试试卷
2024年全新部编仁爱版小学五年级下册信息技术期中考试试卷一、选择题（每题2分，共20分）1. 下列哪个选项不是信息技术的主要特点？A. 数字化B. 网络化C. 智能化D. 手工化2. 在计算机中，存储容量的基本单位是？A. 字节（Byte）B. 千字节（KB）C. 兆字节（MB）D. 吉字节（GB）3. 下列哪个选项不是电子邮件的组成部分？A. 收件人地址B. 主题C.D. 电话号码4. 在网络中，用来标识计算机的地址是？A. IP地址B. MAC地址C. 网络地址D. 网络名称5. 下列哪个选项不是计算机病毒的特点？A. 潜伏性B. 传染性C. 破坏性D. 易于删除6. 在计算机中，用来表示图形、图像、声音等信息的媒体是？A. 文本B. 图像C. 声音D. 视频文件7. 下列哪个选项不是网络通信协议？A. HTTPB. FTPC. TCP/IPD. HTML8. 在计算机中，用来表示数据的单位是？A. 字节（Byte）B. 千字节（KB）C. 兆字节（MB）D. 吉字节（GB）9. 下列哪个选项不是计算机硬件？A. CPUB. 内存C. 硬盘D. 程序10. 在计算机中，用来表示数据的单位是？A. 字节（Byte）B. 千字节（KB）C. 兆字节（MB）D. 吉字节（GB）二、填空题（每题2分，共20分）1. 信息技术是研究信息的产生、表示、存储、处理、传输和应用的学科。
2. 计算机硬件主要包括中央处理器（CPU）、内存、硬盘、输入设备、输出设备等。
3. 计算机软件分为系统软件和应用软件两大类。
4. 网络通信协议是计算机网络中各节点之间进行通信的规则和约定。
5. 计算机病毒是一种恶意程序，具有潜伏性、传染性、破坏性等特点。
6. 计算机网络分为局域网（LAN）、城域网（MAN）和广域网（WAN）。
7. 电子邮件是一种通过计算机网络进行传输的数字通信方式。
8. 计算机网络按照拓扑结构可分为星型、总线型、环型、树型等。
小学下册K卷英语第2单元期中试卷
小学下册英语第2单元期中试卷英语试题一、综合题(本题有50小题，每小题1分，共100分.每小题不选、错误，均不给分)1 The ________ is a little friend.2 My sister is a ______. She loves to read poetry.3 affordable housing) addresses housing shortages. The ____4 A sea turtle can live for _______ (很多年).5 What is the capital of Brazil?A. Rio de JaneiroB. BrasíliaC. São PauloD. Salvador答案: B6 I have a special box where I keep my favorite ________ (玩具名).7 What do we call the process of a liquid turning into a solid?A. MeltingB. FreezingC. EvaporatingD. Condensing答案:B8 What do we call the process of a plant producing flowers?A. GerminationB. PollinationC. FertilizationD. Blooming答案: D. Blooming9 My favorite musician is _______ (名字). 她的音乐很 _______ (形容词).10 What do you call a baby cat?A. PuppyB. KittenC. CubD. Foal答案: B11 The chemical symbol for selenium is _______.12 The cake is ______ (delicious)!13 What is the opposite of "happy"?A. JoyfulB. SadC. AngryD. Excited答案: B14 How many sides does an octagon have?A. 6B. 7C. 8D. 9答案:C15 The __________ (气候) here is warm in summer.16 My cat has soft ______ (毛).17 Planting cover crops can improve ______ (土壤健康).18 A _______ (金鱼) can be a lovely addition to your home.19 The United Kingdom is made up of England, Scotland, Wales, and ________.20 In a solution, the part that is dissolved is called the _____.21 What do you call the period of darkness in each 24-hour cycle?A. NightB. DayC. TwilightD. Dawn答案：A22 ts can grow in ______, while others prefer dry soil. (有些植物可以在潮湿的环境中生长，而另一些则喜欢干燥的土壤。
2023年小学四年级英语下册期中考试及答案【可打印】
2023年小学四年级英语下册期中考试及答案【可打印】题序一二三四五六七八总分得分（满分：100分时间：60分钟）一、从下列每组单词中选出不同类的一项。
（10分）1、（）A．uncle B．basketball C．aunt2．（）A．spoon B．father C．mother3．（）A．fork B．bowl C．light4．（）A．her B．his C．parents5．（）A．bathroom B．kitchen C．sofa二、选出下列各组单词中画线部分的读音不同的一项。
（10分）1．（）A．cake B．date C．map2．（）A．hope B．lost C．not3．（）A．study B．cute C．use4．（）A．bike B．big C．nice5．（）A．me B．get C．let三、给下列图片选择对应的单词。
（10分）A． B． C． D． E.( ) 1. balloons ( ) 2. hamburger ( ) 3. rabbit ( ) 4. bear ( ) 5. eraser四、单项选择。
（20分）1、—What are you doing, Dad? ( )—I’m _______.A．cooking B．cook C．run2、Can I _______ a bottle of juice? ( )A．have B．has C．had3、Miss White will ________ to our school today.( ) A．come B．coming C．to come4、We’re going ______ a picnic on Saturday.( )A．to have B．have C．having5、Where _______ Mary and John? ( )A．am B．is C．are6、—________ are they?( )—They are music and art.A．What B．How many C．Who7、How many ____________ do you have?( )A．a horse B．horse C．horses8、This is Miss Brown. ________ our new doctor.( ) A．He’s B．she is C．She’s9、It’s time _______ PE class. ( )A．for B．to C．on10、—Is she in the living room? ( )—__________A．No, he is. B．No, she isn’t. C．Yes, she isn’t. 五、情景交际，选出正确的一项。
小学下册K卷英语第2单元期中试卷
小学下册英语第2单元期中试卷英语试题一、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 __________ (历史的交互) fosters engagement.2. A physical property of water is that it is ______.3.What do we call water in a solid state?A. LiquidB. GasC. IceD. Steam4.urban sprawl) refers to uncontrolled expansion of cities. The ____5.The ________ (train) is coming to the station.6.My friend is very __________ (好奇的) about science.7.What is the capital of Azerbaijan?A. BakuB. GanjaC. LankaranD. MingachevirA8.I like to visit the ______.9._____ (农田) are filled with crops.10.What is the name of the famous pyramid in Egypt?A. Pyramid of GizaB. Pyramid of KhufuC. Pyramid of DjoserD. All of the above11.I like to _____ (eat/see) ice cream.12.I have _____ (三) pets.13.They are _____ (playing) outside.14.The __________ (历史的演变) shows how cultures adapt and change.15.The Great Wall is a massive structure of galaxies in the _______.16.I can pretend to be a chef with my toy ________ (玩具名称).17.What do you call the act of making a choice?A. DecidingB. ChoosingC. SelectingD. PickingA18.What is the main ingredient in a taco?A. RiceB. ShellC. MeatD. Cheese19.ts can survive in very ______ (极端) conditions. Some pla20.What is a star's life cycle primarily dependent on?A. Its sizeB. Its temperatureC. Its distance from EarthD. Its color21.The ______ is a source of light for our planet.22.The __________ (文化遗产) of a country is important to preserve.23.The soup is _____ (hot/cold) today.24. A solution that can conduct electricity is called an ______ solution.25.The main function of chlorophyll is to capture _____ energy.26.When I meet someone new, I say, "Hello, my name is __." (当我遇到新朋友时，我会说：“你好，我叫。
小学下册K卷英语第2单元期中试卷
小学下册英语第2单元期中试卷英语试题一、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. A substance that can accept protons is called a ______ agent.2.What do we call the study of the mind and behavior?A. BiologyB. PsychologyC. SociologyD. AnthropologyB3.I turned my room into a ________ (玩具名称) playground.4.The apples are ___ (green).5. A ________ (高原) is a flat area at a high elevation.6.What is 12 + 8?A. 18B. 19C. 20D. 217. A _______ grows in clusters.8.The ______ helps us learn about theater.9. A __________ has a long neck and legs, often found in Africa.10.小鸭子) splashes in the water. The ___11.I love to read ______ (故事书) that spark my imagination.12.What do you call a collection of stories in one book?A. AnthologyB. NovelC. MagazineD. JournalA13.The _______ (骆驼) can survive in the desert.14. A chemical bond is the force that holds ______ together.15. A __________ is an example of a chemical change.16.The _______ (The Great Depression) led to widespread economic hardship.17.What is the color of the sun?A. BlueB. YellowC. GreenD. RedB18.小马) grazes in the field. The ___19.My mom enjoys going to ____ (yoga) classes.20. A rabbit's strongest sense is ________________ (嗅觉).21. A collection of atoms bonded together is called a ______.22.The __________ is a major geographical feature of the United States.23.What do you call the process of making something using heat?A. CookingB. FreezingC. BoilingD. Baking24.The ancient Greeks believed in many ________ (神祇).25.Plants are essential for __________ (生态平衡和稳定).26.We sing ________ (songs) at the concert.27. A mixture that contains particles that can be seen is called a _______ mixture.28.Which of these animals can fly?A. FishB. BirdC. DogD. Cat29.What is the name of the famous clock tower in London?A. Big BenB. Eiffel TowerC. Leaning Tower of PisaD. ColosseumA30. A __________ is formed by the accumulation of sediments in a coastal area.31.My little brother always wants to _______ (动词) with me. 他是个很 _______ (形容词)的人.32.The gopher digs tunnels in the ______ (土壤).33.I found a _______ (小鸡) in the barn.34.The _______ (Amendments) to the Constitution are the changes made to the original document.35.What is the name of the tallest building in the world?A. Empire State BuildingB. Burj KhalifaC. CN TowerD. Eiffel TowerB36.I see a _____ (car/bike) on the road.37.What is the capital of Guam?A. HagåtñaB. DededoC. YigoD. MangilaoA38.I like to ___ with my friends. (play)39. A rabbit loves to munch on fresh ______ (蔬菜).40.What is the capital city of Armenia?A. YerevanB. GyumriC. VanadzorD. Vagharshapat41.What is the name of the famous theme park in California?A. DisneylandB. Universal StudiosC. SeaWorldD. LegolandA42. A _______ can measure the amount of energy consumed by different devices.43.The movie starts at ________.44.The chemical formula for sodium thiosulfate is _____.45.The capital of Kyrgyzstan is _______.46.The chairs are ___ (comfortable).47.The ________ (热带气候) supports diverse wildlife.48.My sister is a ______. She loves to read books.49.What is the opposite of rich?A. PoorB. WealthyC. AffluentD. Abundant50.__________ is a gas that we breathe in.51.She has a cute ___. (puppy)52.We can create a ______ (美丽的花园) at home.53. A _______ is the measure of the amount of energy in a substance.54.ssance was marked by advancements in ________ (科学). The Rock55.ta Stone helped decipher __________ (埃及象形文字). The Rose56. A reaction that occurs without outside energy is called a ______ reaction.57.What is the name of the famous wall in China?A. Great WallB. Berlin WallC. Hadrian's WallD. Wall StreetA Great Wall58. A ____(national park) preserves natural beauty and wildlife.59.What is 7 × 3?A. 21B. 18C. 24D. 27A60.The _______ (老虎) has beautiful stripes.61.What do you call a book with stories?A. NovelB. DictionaryC. EncyclopediaD. Journal62.The __________ (金字塔) were built as tombs for pharaohs.63. A __________ is shaped by the action of wind and water over time.64.The ______ can be found in almost every habitat.65.Planets move around the sun in ______.66.The weather is ________ today.67.The capital of Myanmar is _______.posting is a great way to recycle ______ matter for your garden. (堆肥是回收有机物质以供花园使用的好方法。
2023年人教版四年级英语下册期中考试及完整答案
2023年人教版四年级英语下册期中考试及完整答案题序一二三四五六七八总分得分（满分：100分时间：60分钟）一、从下列每组单词中选出不同类的一项。
（10分）1、（）A．took B．tell C．eat2．（）A．great B．picnic C．nice3．（）A．milk B．juice C．food4．（）A．poster B．farmer C．teacher5．（）A．listen B．picture C．make二、选出下列各组单词中画线部分的读音不同的一项。
（10分）1．（）A．fish B．pig C．kite2．（）A．cold B．hot C．fox3．（）A．potato B．orange C．not4．（）A．music B．but C．sunny5．（）A．student B．cute C．lunch三、给下列图片选择对应的单词。
（10分）A．volleyball B．wait C．purple D．guitar E. science1． ( ) 2． ( ) 3．( )4．( )5．( )四、单项选择。
（20分）1、—This is _____ elephant, Sam.( )—Oh, what _____ lovely elephant!A．a; a B．an; a C．a; an2、—______ in the classroom?( )—Some desks and chairs.A．What B．Where C．What’s3、There are __________ seasons in a year.( )A．three B．five C．four4、My father works (工作) in a car. He is a ________. ( ) A．doctor B．cook C．driver5、—Are they on the table? ( )—______ They are in the fridge.A．Yes, they are. B．No, they aren’t. C．No, it isn’t.6、I have a ________ and some ________. ( ) A．keys; candy B．keys; candies C．key; candies7、—_____ animal friends do you have?( )—I have three.A．How old B．What C．How many8、I __________ a ca t. She’s cute. ()A．have B．has C．am9、The big box is _______ the book. ( )A．in B．on C．at10、—_______ red skirt is this? ( )—It’s Jenny’s skirt.A．Whose B．Where C．What五、情景交际，选出正确的一项。
小学下册K卷英语第2单元期中试卷(有答案)
小学下册英语第2单元期中试卷(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.What is the primary color that mixes with red to create orange?A. BlueB. YellowC. GreenD. Purple答案:B2.The ______ (花卉) can attract beneficial insects.3.What is the capital of Vietnam?A. Ho Chi Minh CityB. HanoiC. Da NangD. Hue答案:B.Hanoi4.My favorite fruit is ________ (柠檬) in the spring.5.What do we call the study of ancient civilizations?A. AnthropologyB. ArchaeologyC. HistoryD. Sociology答案:B.Archaeology6.What is the term for water vapor in the air?A. HumidityB. PrecipitationC. EvaporationD. Condensation答案:A7. A ________ (水獺) loves to swim and catch fish.8.My mom loves to _______ (动词) to relax. 她觉得这个很 _______ (形容词).9.What do we call a scientist who studies rocks?A. BiologistB. GeologistC. ChemistD. Physicist答案:B10.My _______ (狗) loves to bark at the mailman.11.What do we call the place where you can watch movies?A. TheaterB. MuseumC. ZooD. Gym答案: A. Theater12.The ________ is a colorful flower that attracts butterflies.13.I enjoy drawing landscapes and ______ (人物). Art allows me to express my imagination.14.We will go to the ________ (水族馆) next week.15.My little brother always wants to _______ (动词) with me. 我觉得他很 _______ (形容词).16.The _____ (peony) is a favorite among gardeners.17.What is the first month of the year?A. JanuaryB. FebruaryC. MarchD. April答案:A18.She is ___ (drawing/painting) a picture.19.I saw a _______ (小狼) playing with its siblings.20.The _____ (window) is open.21.My ________ (舅舅) works at a bank and always helps me with money.22.My _____ (舅舅) is a police officer.23.What is the largest animal in the ocean?A. SharkB. WhaleC. DolphinD. Octopus答案: B24.The ______ (根茎的生长) supports nutrient uptake.25.The _____ (植物) needs water to survive.26. A ______ (田野) can be colorful with wildflowers.27.I enjoy _______ (参加) sports activities.28. A suspension is a mixture that contains large ______.29.The _____ (rain) is pouring.30.Did you see that _____ (小鸟) fly by?31.What do you call the female counterpart of a rooster?A. HenB. DuckC. GooseD. Chicken答案:A32.He ___ to school every day. (walk, walks, walking)33.The _______ (老虎) is very powerful.34.What do you call the place where you go to learn?A. SchoolB. LibraryC. GymD. Office答案: A35. A butterfly is colorful and ______.36.I learned a lot from my last _______ (经历). It taught me many important _______ (教训).37.They _____ (like/likes) to play outside.38.She is reading a story to ___. (her brother)39.Flowers can be enjoyed for their beauty, but they also have ______. (花朵不仅因其美丽而受到喜爱，还有它们的用途。
河南省驻马店市蔡县2023-2024学年四年级英语第二学期期中达标检测模拟试题含答案
河南省驻马店市蔡县2023-2024学年四年级英语第二学期期中达标检测模拟试题（时间：90分钟分数：100分）学校_______ 班级_______ 姓名_______一、选出不同类的一项(每题2分,共10分)。
1.( )A. kite B. ball C. girl2.( )A. big B. aunt C. sister3.( )A. gloves B. close C. look4.( )A. bad B. city C. big5.( )A. living room B. name C. bedroom二、选出最恰当的一项，完成下列各小题(每题2分,共20分)。
6.It’s five o'clock. Let’s _____ home. ( )A. go toB. goC. to go7.It’s time _____ watch TV. ( )A. forB. toC. at8.John: Is it warm in Beijing today? ( )Sarah: ______ It’s cold.A. Yes, it is.B. No, it isn’t.C.No, he isn’t.9.Don’t shout. The kid is _____ in the bedroom. ( )A. get upB. sleepingC. eating10.T his is Tingting. She’s a __________ shy. （）A. goodB. cleverC. bit11.Do you _________ music? ( )A. likeB. likesC. to like12.---Do you have a new teacher? ( )---.A. Yes, I am.B. No, I do.C. No, I don’t.13.—_______ house is it? ( )—It’s my house.A. WhoB. WhoseC. Where14.( )A. We often have a class meeting on Monday.B. We often raise our national flag on Monday.C. We often play the violin on Monday.15.—A wonderful view! Let’s take a p hoto! ( )—______A. Why not?B. Good idea!C. A and B.三、按要求完成下列句子(每题2分,共10分)。
江西省南昌市第五高级中学2023-2024学年高一下学期期中考试数学试卷
江西省南昌市第五高级中学2023-2024学年高一下学期期中考试数学试卷学校:___________姓名：___________班级：___________考号：___________一、单选题1．已知向量()13,,1,3a m b ⎛⎫==- ⎪⎝⎭r r .若a r P b r，则实数m =（ ）A ．1B ．1-C ．9D ．9-2．已知扇形面积为38π，半径是1，则扇形的圆心角是（ ） A ．316π B ．38π C ．34π D ．32π3．已知向量a r 与b r 的夹角为120︒，且2=r a ，4b =r ，则向量a r在向量b r 上的投影数量为（ ）A ．1B ．1-C ．2D ．2-4．已知点P 是ABC V 的重心，则（ ）A ．1166AP AB AC =+u u u r u u u r u u u rB ．1144AP AB AC =+u u u r u u u r u u u rC ．2133AP AC BC =+u u u r u u u r u u u rD ．2133AP AB BC =+u u u r u u u r u u u r5．已知πsin 12α⎛⎫+= ⎪⎝⎭，则πsin 23α⎛⎫-= ⎪⎝⎭（ ）A ．23B ．13C ．23- D ．13-6．点P 是ABC V 所在平面上一点，若1123AP AB AC =+u u u r u u u r u u u r，则ABP V 与ACP △的面积之比是（ ） A ．32B ．3C ．13D ．237．若x 是三角形的最小内角，则函数sin cos sin cos y x x x x =+-的最小值是A ．12B ．12-C ．1D 8．已知向量(2cos ,1)m x =-r，πsin ,sin 23n x x ⎛⎫⎛⎫=+- ⎪ ⎪⎝⎭⎝⎭r ，函数()f x m n =⋅u r r .则下列关于()f x 的说法正确的是（ ）A ．函数的最小值为B ．π12f ⎛⎫-= ⎪⎝⎭C ．函数的最小正周期为2πD ．()f x 在π,02⎡⎤-⎢⎥⎣⎦上单调递减二、多选题9．（多选）关于平面向量a b c r r r，，，下列说法中错误的是（ ）A ．若//a b rr 且//b c r r ，则//a c r r B ．()+⋅=⋅+⋅r r r r r r ra b c a c b cC ．若a b a c ⋅=⋅r r r r ，且0a ≠r r ，则b c =r rD ．()()a b c a b c ⋅⋅=⋅⋅r r r r r r10．函数()()ππ02,22f x x ωϕωϕ⎛⎫+<≤-<< ⎪⎝⎭的部分图象如图所示，则下列说法中正确的是（ ）A ．()f x 的表达式可以写成()5π24f x x ⎛⎫+ ⎪⎝⎭B ．()f x 的图象向右平移3π8个单位长度后得到的新函数是奇函数 C ．()π14g x f x ⎛⎫=++ ⎪⎝⎭的对称中心ππ,1,82k k ⎛⎫-+∈ ⎪⎝⎭ZD ．若方程()1f x =在()0,m 上有且只有6个根，则5π13π,24m ⎛⎫∈ ⎪⎝⎭11．引入平面向量之间的一种新运算“⊗”如下：对任意的向量()11,m x y =u r ，()22,n x y =r，规定1212m n x x y y ⊗=-u r r ，则对于任意的向量a r ，b r ，c r，下列说法正确的有（ ）A ．a b b a ⊗=⊗r r r rB ．()()a b a b λλ⊗=⊗r r r rC ．()()a b c a b c ⋅⊗=⊗⋅r r r r r rD ．||||||a b a b ⋅≥⊗r r r r三、填空题12．函数cos sin2xy x =+的值域为 ． 13．已知平面向量,a b r r 满足1,a b a ==r r r 与b r 的夹角为60°，若a b +r r与ta b -r r 的夹角为钝角，则满足条件的t 的取值范围为 .14．如图，在ABC V 中，已知2,3,60,AB AC BAC M ==∠=︒是BC 的中点，23AN AC =u u u r u u u r，设AM 与BN 相交于点P ，若BP BN μ=uu r uu u r ，则μ= ，BP AM ⋅=u u u r u u u u r．四、解答题15．已知3sin(3)cos(2)sin 2()cos()sin()f ααααααπ⎛⎫π-π-- ⎪⎝⎭=π--π-.（1）化简()f α；（2）若α是第二象限角，且1cos 23απ⎛⎫+=- ⎪⎝⎭，求()f α的值.16．已知a r ，b r ，c r是同一平面内的三个不同向量，其中()1,2a =r .(1)若c =r a c ∥r r ，求c r ；(2)若2b =r，且()0ka b kb k ->=+r r r ，求a b ⋅r r 的最小值，并求出此时a r 与b r夹角的余弦值.17．已知函数π()2sin cos 3f x x x ⎛⎫=- ⎪⎝⎭，x ∈R .(1)求()f x 的最小正周期；(2)求()f x 在区间π[,π]2上的最小值并指出此时x 的取值；(3)若00ππ7π(),2448f x x ⎡⎤+=∈⎢⎥⎣⎦，求0cos2x 的值.18．已知函数π()sin (0,π)2f x A x A ϕϕ⎛⎫=+>< ⎪⎝⎭的图象如图所示，点B ，D ，F 为()f x 与x轴的交点，点C ，E 分别为()f x 的最高点和最低点，而函数()f x 在12x =-处取得最小值.(1)求参数φ的值；(2)若1A =，求向量2BC CD -u u u r u u u r 与向量3BC CD +u u u r u u u r夹角的余弦值；(3)若点P 为()f x 函数图象上的动点，当点P 在C ，E 之间运动时，1BP PF ⋅≥u u u r u u u r恒成立，求A的取值范围.19．由倍角公式2cos22cos 1θθ=-，可知cos 2θ可以表示为cos θ的二次多项式．对于cos3θ，我们有cos3cos(2)cos2cos sin 2sin θθθθθθθ=+=- ()222cos 1cos 2sin cos θθθθ=--()322cos cos 21cos cos θθθθ=--- 34cos 3cos θθ=-可见cos3θ也可以表示成cos θ的三次多项式． (1)利用上述结论，求sin18︒的值；(2)化简()()cos 60cos 60cos θθθ︒︒-+；并利用此结果求sin 20sin 40sin60sin80︒︒︒︒的值； (3)已知方程314302x x --=在(1,1)-上有三个根，记为123,,x x x ，求证：33312334442x x x ++=.。
江苏省木渎高级中学2022～2023学年高二下学期期中考试化学试题
江苏省木渎高级中学2022～2023学年高二下学期期中考试化学试题学校:___________姓名：___________班级：___________考号：___________一、单选题该历程中反应速率最慢步骤的化学方程式为下列分析不合理的是A ．状态Ⅰ为2N 吸附并发生解离，N N ≡键发生断裂并吸收能量B ．状态Ⅲ反应的方程式为232LiNH 3H 2LiH 2NH ++=C ．“TM-LiH”能降低合成氨反应的H∆D ．合成3NH 总反应的原子利用率是100%8．利用生物燃料电池原理研究室温下氨的合成，电池工作时2MV /MV ++在电极与酶之间传递电子，下列说法不．正确的是A ．相比现有工业合成氨，该方法条件温和，同时还可提供电能B ．负极区，在氢化酶作用下发生反应：22H 2MV 2H 2MV +++++=C ．正极区电极反应式为2MV e MV +-++=，固氮酶表面2N 发生还原反应生成3NH D ．当外电路通过1mol 电子时，有1mol 质子通过交换膜由正极区向负极区移动9．下列实验事实不能证明醋酸是弱电解质的是A ．常温下，测得0.1mol ⋅L 1-醋酸溶液的pH 约为3B ．常温下，测得0.1mol ⋅L 1-醋酸钠溶液的pH 约为8C ．常温下，pH 1=的醋酸溶液和pH 13=的()2Ba OH 溶液等体积混合，溶液呈酸性D ．相同pH 的醋酸溶液和盐酸分别与同样颗粒大小的锌反应，产生2H 的起始速率相等10．常温下，用0.100mol ⋅L 1-的NaOH 溶液滴定20.00mL0.100mol•L 1-醋酸溶液，滴定曲线如图所示，下列说法正确的是A ．a 点溶液中，()()33CH COO CH COOH c c ->B ．b 点溶液中，()()()()332HCH COOH CH COO 2OH c c c c +--+=+C ．c 点溶液中，()()3Na CH COO c c +-<D ．d 点溶液中，()()()332CH COOH 2CH COO Na c c c -++<11．25℃时，取浓度均为10.1000mol L -⋅的醋酸溶液和氨水各20.00mL ，分别用K CH COOHA．根据滴定曲线可得，25℃时(a3B．当NaOH溶液和盐酸滴加至20.00mL时，曲线Ⅰ和Ⅱ刚好相交C．曲线表示的滴定过程一般选择甲基橙作指示剂D．在逐滴加入NaOH溶液或盐酸至40.00mL12．用一定浓度的NaOH标准溶液滴定未知浓度的醋酸溶液，溶液物质的量浓度偏低的是A．碱式滴定管用蒸馏水洗净后，直接注入B．锥形瓶用蒸馏水洗净后，直接装入未知浓度的醋酸溶液C．滴定到终点读数时，俯视刻度线(滴定前平视D．碱式滴定管尖端滴定前有气泡，滴定后气泡消失13．已知H2C2O4是一种二元弱酸。
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启扬国际英语2014年秋季Kids Box二级（下）
期中测试卷
（答题时间：50分钟总分：100分出卷人：孙琴伟）
Name________ Class________ Grade_____
A. Listening Test Part 40%
I.Listen and colour .(10%)
II. Listen and number.(10%)
（）（）（）（）
（）（）（）（）
( ) ( )
III. Listen and circle.（10%）
1. sheep flat shop dress
2. jeans shirt hat cafe
3. frog goat duck park
4. spider snake street glasses
5. burger chips rice hospital
IV. Listen and choose.（10%）
1. ( ) He is running. ( ) She is jumping.
2. ( ) There are ten ducks. ( ) There are five cows.
3. ( ) Yes, I have. ( ) So do I.
4. ( ) Yes, she has. ( ) No, he hasn’t.
5. ( ) On the sofa. ( ) Three books.
B. Written Test Part40%
V. Classify the words.（15%）
Toys Fruit Town Animals Clothes ________ ________ ________ ________ ________ ________ ________ ________ ________ ________ ________ ________ ________ ________ ________ VI. Look ,read and choose. （10%）
1. There are three bananas. ( )
A. B. C. D.
2. I’v got socks. ( )
A. B. C. D.
3. This is a pets’ shop. There is a dog the shop.( )
A. D.
4. What is Maskman doing? ----- He is playing football. ( )
A. B. C. D.
5. There is a street in front of the flat. ( )
A. B. C.
6. How many bikes are there? ( )
A. Three cars
B. Twelve dogs
C. Nine babies
D. Two bikes
7. Where is Stella? ( )
A. He is behind Suzy.
B. She is flying kite.
C. She is in the car.
D. He is sitting.
8. Has Simon got a black shirt?( )
A. Yes, she has.
B. Yes, he hasn’t.
C. No, he has.
D. No, he hasn’t.
9. How are you? ( )
A. I’m fine, thank you.
B. I’m eight.
C. It’s green.
D. Bye.
10. What colour is the banana? ( )
A. It’s red.
B. It’s yellow.
C. It’s pink.
D. It’s grey. VII. Read and match. （10%）
( )1. What’s grandpa doing? A. Yes, I like.
( )2. Where ’s the shop? B. Yes, I have.
( )3. Do you like water melon? C. There are four dogs.
( )4. How many dogs are there? D. It’s next to the park.
( )5. Have you got a hat? E. He’s flying a kite.
VIII. Write the letters.（5%）
Bb _____ Ff______ Hh ______ Ll______ Qq ______ ——————————————————————————————————————————————————————————————————
C. Speaking Test Part 20%
IX.Read the words.（5%）
frog lizard spider cafe park shirt dress cow water street duck goat sheep flat hospital shop handbag glasses
X. Read the sentences.(5%)
○1Where is the hospital?
○2How many cars are there?
○3There are six blue books
○4Have you got a red hat?
○5I’ve got black glasses.
XI. Talk with the teacher by the pictures.（10%）
○1Who’s she/he?
○2How many cakes/ bananas are there?
○3Where is the hospital/ cafe/ lorry?
○4What colour is th e flat/Suzy’s dress？
○5Has Alex/Suzy.. got a black shirt/ an orange hat?
○2
○3○5。