高一随堂测试
2019外研版高一英语必修一unit1随堂练习题
必修一unit1 My First Day at Senior High随堂练习题一、单词拼写1. He is also a manager, but (级别高的)to me.2. When you are in senior high school, you will (探索)everything on campus with eagerness.3. Your performance gave me a deep .(印象)4. The school (组织)a collection exhibition and students presented their collections one by one.5. When a person is panicked or embarrassed, he may have difficulty in(呼吸).6. She got into a real (恐慌)when she didn't find her son in the supermarket.7. Babies are (好奇的)about everything around them.8. Working in such a famous firm is a (挑战)for graduates.9. He listens to music as an escape from the (压力)of work.10. Though surprised to meet her manager at the party, she pretended to be (镇静的).11. There's a (传统)in our family that we have a party on New Year's Eve.12. I feel much more (自信)about myself and my abilities these days.二、短语填空in panic, find out, one by one, depend on, pay attention to, a bit 1. The dress is short for you and the color is too bright. In a word, it isn't suitable for such a formal occasion.2. They will who did it, whether you tell them or not.3. Let's break up the project into smaller parts in order to deal with them .4. Most of the people were when the earthquake happened.5. People won't you when they still have a lot of ideas of their own crying for expression.6. Whether we will succeed or not whether we work hard or not.三、完成句子1. Mom explained that properly ironed clothes would help me .(留下好印象)2. When you (面对挑战) , you will feel pressure, but keep calm.3. They (正在劳作)in the fields (这时)it began to rain cats and dogs.4. It's (活到老, 学到老).5. The music was so loud that she could hardly (让自己被听到).四、短文填空三、challenge organise eager butterfly collect panic breath impression curious walkOn his first day in senior high school, Tom was 1 about everythingon campus . He was going to explore the unknown world with 2 . Despite the pressure and 3 in his future studies, Tom said he would not feel embarrassed or 4 . He should always stay calm . Later that day the school 5 a visit to the biology exhibition. Tom and his classmates entered the exhibition room one by one and watched the 6 of animal specimens such as insects including 7 . When he 8 past a specimen of a shark, he was in panic and felt difficult to9 . The exhibition made a deep 10 on Tom and his classmates.五、完形填空Making friends is a skill. Like most skills, it patience. If you want to meet people and make friends you must be willing to some action. You must first go where there are people. You won't make friends staying home .Joining a club or group talking to those who like the same things as you do is much easier. Or join some some activities.Many people are shy when talking to new people. all, meeting strangers means seeing the unknown. And it's human nature to feel a bit about the unknown. Most of fears about new people come from doubts about ourselves. We imagine other people are us -finding us too tall or too short, too this or too that. But don't forget that they must be feeling the same way. Try to accept yourself you are and try to put the other at ease. You will both feel more comfortable.Try to be self confident even if you don't feel that way when you a room full of strangers. Walk tall and straight look at other people directly and .If you see someone you'd like to say something. Don't wait for person to start a talk. Just meeting someone does not mean that you will make friends with that person. is based on mutual likings and "give and take". It takes time to develop friendship.1. A. applies B. makes C. spends D. requires2. A. improve B. make C. take D. attract3. A. lonely B. yourself C. by yourself D. actually4. A. in B. to C. on D. with5. A. At B. For C. From D. After6. A. unhappy B. worried C. usual D. unlucky7. A. meeting B. recognizing C. visiting D. speaking8. A. talking B. admiring C. judging D. laughing9. A. when B. as C. what D. that10. A. design B. enter C. register D. quit11. A. smile B. contact C. compete D. laugh12. A. speak to B. sign up C. apply for D. come along13. A. another B. other C. the other D. others14. A. outgoing B. new C. confident D. suitable15. A. Impression B. Behavior C. Connection D. Friendship一、senior explore impression organised breathing panic curious challenge pressure calm tradition confident二、a bit find out one by one in panic pay attention todepends on三、make a good impression face challenges were working,when never too old to learn make herself heard四、curious eagerness challenges panicked organised collection butterflies walked breathe impression五、DCCAD BACBB AACBD。
(完整word)高一英语上册随堂练习题及答案和解析
高一英语上册随堂练习题及答案和解析课堂45分钟练习Ⅰ.语法和词汇知识 1(2010江西模拟,32)―Do you think we should accept that offer? ―Yes,we should,for we ______such bad luck up till now,and time ______ out. A.have had;is running B.had;is running C.have;has been run D.have had;has been run 解析:根据“such bad luck up till now”可知,第一个空应用现在完成时。
time is running out表示“时间快到了”,用现在进行时表示将来。
句意:――你认为我们应该接受他们的帮助吗?――是的,我们应该接受,因为我们近来运气不好,而且时间快到了。
答案:A 2Sam insisted that he ______ the law and ______. A.didn't break;mustn't be punished B.doesn't break;shouldn't punish C.hadn't broken;be not punished D.hadn't broken;not be punished 解析:句意:他说他没有犯法因而不该受到惩罚。
insist 后面的从句中,如果陈述的是事实,用陈述语气;如果表示“坚持认为应该”的含义,要用“(should)+动词原形”的虚拟语气形式。
答案:D 3______,I have to put it away and focus my attention on study this week. A.However the story is amusing B.No matter amusing the story is C.However amusing the story is D.No matter how the story is amusing 解析:句意:无论这个故事多么有趣,这周我必须要把它放起来专心学习了。
人教版高一地理必修一课堂随堂练习题:2.3 常见天气系统
2.3 常见天气系统读常见天气系统(图甲、图乙)示意图,完成1—2题。
1.下列关于图甲、图乙的叙述,正确的是A.图甲是暖锋示意图B.图甲天气系统产生的降水发生在锋前C.图乙是南半球反气旋D.图乙天气系统的中心气流在垂直方向下沉2.下列天气现象与其成因的组合中,正确的是A.长江中下游地区的梅雨—图甲B.我国东南沿海地区夏秋季节的台风—图甲C.重庆夏季的伏旱—图乙D.我国北方地区夏季午后的暴雨—图乙读某天气系统经过石家庄前后的气温、气压、降水、风速变化示意图,完成3—5题。
3.该天气系统是A.气旋B.反气旋C.冷锋D.暖锋4.该天气系统到达石家庄市的时间是A.29日 B.31日 C.1日D.3日5.该天气系统南下时形成的灾害性天气是A.寒潮B.洪涝C.锋面气旋D.干旱下图为某年12月11日某时海平面等压线图(单位:百帕)。
读图,完成6—8题。
6.此时A.甲地气压低于周边B.乙地风向为偏北风C.丙地风力大于乙地D.丁地盛行上升气流7.图中A.①锋面将会向西北方向移动B.②锋面过境时可能带来降水C.③锋面过境后气温会降低D.④线区域受到冷锋的控制8.下图中的天气系统与上图中甲地类型相同的是A.B. C.D.下图是我国某天气系统在某地过境时的气压与风速随时间的变化规律示意图。
读图完成9—10题。
9.该天气现象是A.冬天大风、寒潮天气B.东南沿海台风天气C.华北地区沙尘暴天气D.长江流域伏旱天气10.该天气系统是A.快行冷锋B.反气旋C.强热带气旋D.准静止锋形成于热带洋面的台风,登陆时伴随狂风、暴雨、风暴潮,是一种破坏力很强的天气现象。
读西北太平洋和南海平均生成和登陆我国的台风个数(1981—2010年)图,回答11—13题。
11.据图可知,A.台风只在夏秋季节才会形成B.夏秋季是防范台风的重点时段C.我国全年各地均会受到台风影响D.夏季生成个数多,登陆个数少12.下列关于台风造成损失的描述正确的是A.夏季台风给沿海带来丰沛降水B.秋季台风使南方水稻受到冻害C.大风翻江倒海,吸引鱼群聚集D.巨浪摧毁沿岸设施、掀翻渔船13.预防台风灾害的主要措施有①加强监测和预报②沿海渔船及时回港避风③出行建议乘坐飞机④及时转移低洼地区居民⑤农田夜间防御霜冻A.①②③B.①②④C.③④⑤D.②③⑤读中国东部雨带移动示意图和副热带高压(简称副高)季节活动图,回答14—15题。
高中必修一高一数学交集、并集随堂练习及答案
高中必修一高一数学交集、并集随堂练习及答案1.设A=(]3,1- ,B=[)4,2,求A ∩B2.设A=(]1,0,B={0},求A ∪B3.在平面内,设A 、B 、O 为定点,P 为动点,则下列集合表示什么图形(1){P|PA=PB} (2) {P|PO=1}4.设A={(x,y )|y=—4x+b},B={(x,y )|y=5x —3 },求A ∩B5.设A={x|x=2k+1,k ∈Z},B={x|x=2k —1,k ∈Z},C= {x|x=2k ,k ∈Z}, 求A ∩B ,A ∪C ,A ∪B[巩固提高]1. 设全集U={a ,b ,c ,d ,e},N={b ,d ,e}集合M={a ,c ,d},则C U (M ∪N ) 等于2.设A={ x|x <2},B={x|x >1},求A ∩B 和A ∪B3.已知集合A=[)4,1, B=()a ,∞-,若A B ,求实数a 的取值范围 ⊂ ≠4.求满足{1,3}∪A={1,3,5}的集合A5.设A={x|x 2—x —2=0},B=(]2,2-,求A ∩B6、设A={(x,y )| 4x+m y =6},B={(x,y )|y=nx —3 }且A ∩B={(1,2)},则m= n=7、已知A={2,—1,x 2—x+1},B={2y ,—4,x+4},C={—1,7}且A ∩B=C ,求x ,y 的值8、设集合A={x|2x 2+3px+2=0},B={x|2x 2+x+q=0},其中p ,q ,x ∈R ,且A ∩B={21}时,求p 的值和A ∪B9、某车间有120人,其中乘电车上班的84人,乘汽车上班的32人,两车都乘的18人,求:⑴只乘电车的人数 ⑵不乘电车的人数 ⑶乘车的人数 ⑷只乘一种车的人数10、设集合A={x|x 2+2(a+1)x+a 2—1=0},B={x|x 2+4x=0} ⑴若A ∩B=A ,求a 的值⑵若A ∪B=A ,求a 的值答案:1、[2,3]2、[0,1] 3、(1)直线(2)圆 4、{(1,2)} 5、A 或B ,Z ,A 或B[巩固提高]1、φ2、(1,2),R 3、 a ≥4 4、{5},{3,5},{1,5},{1,3,5} 5、A 6、1,5 7、3,21- 8、35-,{2,21,—1} 9、66,36,98,80 10、a=1或a ≤—1, a=1。
高一政治必修1第三课随堂测试及答案
高一政治必修1第三课随堂测试及答案政治必修1第三课讲的是有关消费的内容,高一学生可以通过随堂测试了解自己掌握的知识情况,下面是店铺给大家带来的高一政治必修1第三课随堂测试,希望对你有帮助。
高一政治必修1第三课随堂测试(一)1.在上海,汽车领域一种新的消费——“绿车”消费正在兴起,“绿车”是指那些开发过程无污染,使用健康且安全,不会破坏环境和生态,在特定的技术标准下生产出来的汽车产品。
这种消费体现的消费观念是( )A.保护环境,绿色消费B.避免盲从,理性消费C.量入为出,适度消费D.勤俭节约,艰苦奋斗解析:A “开发过程无污染,使用健康且安全,不会破坏环境和生态”很明显体现的消费观念是保护环境,绿色消费,故A项符合题意入选。
2.[2015·四川成都高新区月考]试客是指那些走在消费者前沿的人群,在购物前,他们先从互联网上免费索取相关商家的使用赠品,经过仔细试用和与其他爱好者相互交流后才进行购买。
试客的行为( )①有利于企业的品牌推广②是攀比心理引发的消费③减少了商品的价值量④是求实心理引发的消费A.①④B.②④C.①③D.③④解析:A 题中他们先从互联网上免费索取相关商家的使用赠品,经过试用和其他人交流后才进行购买,这样的做法是求实心理引发的消费,对于企业来说,可以获得良好的口碑,有利于企业的品牌推广,因此①④符合题意;②和题意无关;商品的价值量由生产该商品的社会必要劳动时间决定,因此③不符合题意;答案A正确。
3.节俭是传统美德。
经济学家凯恩斯则提出了节俭悖伦,认为节俭对个人、家庭来说是美德,而对社会来说则意味着支出减少,导致有效需求不足,阻碍经济发展,造成失业增加,收入减少。
这启示我们( )A.个人应该坚持节俭,社会应该扩大消费B.艰苦奋斗已经过时,消费就是爱国C.既要勤俭节约,又要适度消费D.个人应积极进行贷款消费解析:C 勤俭节约并不意味着滞后消费,所以只要适度消费,节俭是有利于社会和个人的一种理智消费行为,故C项符合题意入选。
7925高一语文离骚随堂练习
六、离骚一、语言积累1、选出下列加点字的注音和释义都正确的一项()A.謇.(jiăn,古楚语中的句首语气词)朝谇.(suì建议)而夕替怨灵修之浩荡..(hào dàng,声势浩大)兮谣诼..(yáo zhuoï,造谣、诽谤)谓余以善经B.偭.(miăn背向、违背)规矩而改错忳.(dùn忧闷)郁邑余侘傺..(chà châ)兮宁溘.(kâ忽然,突然)死以流亡兮C.鸷.(zhì,凶猛)鸟之不群兮固.(gù,本来)前圣之所厚.(hîu,推重,推崇)延伫(yán zhù,久久站立)乎吾将反D.何方圜.(huán通“圆”)之能周兮驰椒丘且焉止息..(停下来休息)唯昭质..(zhào zhì,明洁光明的本质)其犹未亏(亏损)2、选出不含通假字的一句()A.忳郁邑余侘傺兮 B.何方圜之能周兮C.进不入以离尤兮 D.芳与泽其杂糅兮3、选出下列句子中不属于宾语前置的句子。
()A.岂余心之可惩B.句读之不知,惑之不解C.不吾知其亦已兮D.亦余心之所善兮4、选出下列句子中加点字意义相同(相近)的两句()A.固时俗之工巧兮B.汝心之固,固不可彻C.自前世而固然D.固前圣之所厚5、选出下列译文中有错的一项()A.固时俗之工巧兮,偭规矩而改错。
译文:世俗本来就是善于投机取巧啊,违背规矩而任意改变措施。
B.制芰荷以为衣兮,集芙蓉以为裳。
译文:裁剪荷叶做上衣啊,缝缀荷花花瓣做下装。
C.佩缤纷其繁饰兮,芳菲菲其弥章。
译文:佩戴上缤纷多彩的服饰啊,菲菲的芳香更加显著。
D.虽体解吾犹未变兮,岂余心之可惩?译文:即使是粉身碎骨我还是不会改变啊,难道有谁能挫败(动摇)我的志向吗?6、下列各句中,没有语病的一句是 ( )A.正是由于这个观点的改变,不仅使"国力牌名袜"在上海市场一鸣惊人,而且影响了上海人对袜品的消费观念,推动了上海袜品行业的革命.B.封龙山又名飞龙山,位于石家庄市区22公里处,早在战国时期就已见诸史册,汉唐以来一直是河北名山.C.在漫长的发展过程中,我国园林建筑与诗文,绘画等艺术紧密结合,形成了富有诗情画意的,在世界上独树一帜的艺术风格.D.俄罗斯著名人口专家鲍里斯·谢尔盖耶维奇·霍列夫断言,如果人口出生率世界最低的问题不重视,俄罗斯民族在21世纪末从地球上消失.7、依次填入下列两句中横线处的语句,与上下文语意连贯,音节和谐的一组是 ( )(1)有一次,听到了山林里的猿啼.那声音,忽远忽近,或呼或和,飞动如闪电,高亢如天风, ________,比人类伟大天才谱出的乐章更为神妙动听.(2)北平郊外, ___________,和时时吹来的几阵雪样的西北风,所给予人的印象,实在是深刻,伟大,神秘到了不可以语言来形容.①激越如奔泉,飘逸如闲云②飘逸如闲云,激越如奔泉③西山隐隐的不少白峰头,以及无数枯树林,一片大雪地④一片大雪地,无数枯树林,以及西山隐隐的不少白峰头A.①③B.①④C.②③D.②④二、课堂点击:1、下列有关文学常识的表述,不正确的一项是(1998年全国高考试题第12题)()A.“骚体”又称“楚辞体”,得名于屈原的《离骚》,特点之一是多用“兮”字。
高一英语人教版必修一随堂练习:Unit+3+Travel+journal(含答案)
Book 1 Unit 3随堂练习Part One: Warming Up →ComprehendingI. 单词拼写(每空一分,共10分)。
1.Think about the advantages and d________ of each form of transport and find which kind you p________.2.After________ from college,we got the chance to take a bike trip.3.She soon got them interested in________(骑车)too and now she is planning the________(计划表)for the trip.4.My sister's d________ look suggested that she was________(固执的).5.I've________(说服)her out of her foolish plan of________(组织)a long________(旅行).6.She________(弯腰)forward to pick up the newspaper.7.An a________ is what a person thinks about something.8.I want to walk to the station,but he i________ on driving me there.II. 词汇运用(10分)。
1.____________(n.)运送;运输(vt.)运输;运送2.____________(n.)不利条件;不便之处→____________(反义词)优点,有利条件3.____________(vt.)说服;劝说4.____________(vi.)毕业(n.)大学毕业生→____________(n.)毕业5.____________(adv.)最后;终于→____________(adj.)最终的;最后的6.____________(adj.)喜爱的;慈爱的;宠爱的7.____________(adj.)顽固的;固执的8.____________(vt.)组织;成立→____________(n.)组织;团体→____________(n.)组织者9.____________(vt.)决定;确定;下定决心→____________(adj.)坚决的;有决心的→____________(n.)决心,决定10.____________(vi.)缓慢而行;踱步(n.)一步;速度;步调III. 短语搜索(10分)1.be fond ________ 喜爱;喜欢2.ever ________ 从那以后3.dream ________ 梦想,梦见4. persuade sb.________ sth. 说服某人做某事5. after graduating ________ college 大学毕业之后6. change one’s ________ 改变主意7. care ________ 关心;忧虑;惦念8. make ________ one’s mind 下定决心;决定9. ________ an altitude of... 在海拔……的高度10. give ________ 投降;让步IV.用适当的介、副词填空(10分)1.Ever ________ middle school,my sister Wang Wei and I have dreamed ________ taking a great bike trip.st year,she visited our cousins Dao Wei and Yu Hang ________ their college ________ Kunming.3.They are Dai and grew ________ in western Yunnan Province near the Lancang River.4.It was my sister who first had the idea to cycle ________ the entire Mekong River________ where it begins ________ where it ends.5.Now she is planning our schedule ________ the trip.6.I am fond ________ my sister but she has one serious shortcoming.7.When I told her that our journey would begin ________ an altitude ________ more than 5,000 metres,she seemed to be excited ________ it.8.Several months ________ our trip,Wang Wei and I went to the library.9.We found a large atlas ________ good maps that showed details ________ world geography.10.It becomes rapids as it passes ________ deep valleys,travelling across western Yunnan Province.V. 根据括号中的提示将下列句子译成英语(10分)。
高一下英语随堂练习题
高一下英语随堂练习题(选择)一、单项选择1.()Mrs. Green teaches English at middle school.[A]the; a[B]the; /[C]/; a2.()—What's the matter with Tom?—He caught bad cold and had to stay in bed.[A]/; a[B]a; /[C]/; the3.()Father's Day comes on third Sunday inJune.[A]the; /[B]the; a[C]/; the4.()Liu Wei goes to school on foot every day.[A]a[B]the[C]/5.()letter written in ink is hard to read.[A]A[B]An[C]The6.()She was playing violin while he was playing basketball.[A]a; /[B]the; /[C]a; an7.()young must look after old.[A]The; a[B]The; the[C]A; the8.()Great Wall is longest wall in the world.[A]The; the[B]A; a[C]A; the9.()I can see a little white sheep in the field. sheep is Nancy's.[A]A[B]The[C]An10.()—What are you going to do this afternoon, Jack?—I am going to play football.[A]a[B]the[C]/11.()There is “U” and “S” in the word “use”.[A]an; an[B]an; a[C]a; an12.()Alice is amazing actress. She has lots of fans.[A]a[B]an[C]the13.()—Does Zhang Min love playing piano?—No, he doesn't. He is fond of listening to music.[A]a; the[B]the; /[C]/; /14.()—Do you like color of this coat?—Yes, I do. It looks nice.[A] a[B] an[C] the15.()There is old bike. old bike is Mr.Zhao's.[A]an; The[B]the; An[C]a; The16.()At that time Tom was oneyearold baby.[A]a[B]an[C]the17.()We can't see sun at night.[A]the; the[B]the;/[C]a;/18.()useful book it is![A]What an[B]How a[C]What a19.()One afternoon he found handbag. There was “s” on the corner of handbag.[A]a; an; the[B]a; a; the[C]an; an; an20.()old lady with white hair spoke English well at meeting.[A]An; an; a[B]The; /; an[C]The; /; the21.()________ Great Wall is ________ longest wall in the world.[A]A; a[B]The; the[C]A; the22.()new bridge has been built overHuangpu River.[A]The; a[B]A; /[C]A; the23.()woman over there is popular teacher in our school.[A]A; an[B]The; a[C]The; the24.()They made him king.[A]a[B]the[C]/25.()Is he American boy?[A]an[B]a[C]one26.()They passed our school day before yesterday.[A]an[B]one[C]the27.()She has orange skirt. skirt is nice.[A]a; The[B]an; The[C]an; A28.()This is apple. It's big apple.[A]an; a[B]a; the[C]a; an29.()The museum is quite far. It will take you half hour to get there by bus.[A]an;/[B]an; a[C]a;/答案一、单项选择1.C2.B3.A4.C5.C6.B7.B8.A9.B10.C【提示】本题考查冠词。
高一语文诗两首随堂练习
第二课诗两首一、语言积累1.给下列加点字注音。
⑴彷徨..()⑵彳亍..()⑶凄婉.()⑷颓圮..()⑸青荇.()⑹长篙.()⑺漫溯.()⑻笙箫..()2.选出没有错别字的一项()A.悠长有尝寂寥寥廓愁怨B.忧愁惆怅泠漠凄清迷茫C.迷惘河畔艳影映射榆荫D.浮躁浮藻装载揣摩幽雅3.解释下列词语。
⑴彷徨:⑵彳亍:⑶太息:⑷颓圮:⑸漫溯:⑹斑斓:4.根据所提供的语句中划线的部分各仿写两个句子。
例句一:丁香一样的颜色,丁香一样的芬芳,丁香一样的忧愁,在雨中哀怨,哀怨又彷徨。
仿句(1):仿句(2):例句二:悄悄的我走了,正如我悄悄的来;我挥一挥衣袖,不带走一片云彩。
仿句(1):仿句(2):5.文学常识填空⑴戴望舒,浙江杭州人,中国(时代)著名诗人,诗集有《我底记忆》《望舒诗稿》《灾难的岁月》等。
《雨巷》是作者的成名作和早期代表作,诗歌发表后产生了较大影响,诗人也因此被人称作“”。
⑵徐志摩(1897—1931),浙江海宁人。
现代诗人、。
诗集有《志摩的诗》和散文集《巴黎的鳞爪》《自剖》《落叶》等。
二、课堂点击6.怎样理解和欣赏《雨巷》中的两个主要意象?7.《雨巷》一诗中重叠和反复手法的运用有怎样的表达效果?8.如何解读“但我不能放歌,/悄悄是离别的笙箫;/夏虫也为我沉默,/沉默是今晚的康桥!”这几行诗?9.《再别康桥》一诗的形式美主要表现在哪些方面?三、选段在线阅读下面两小节诗,完成10—12题。
那河畔的金柳,是夕阳中的新娘;波光里的艳影,在我的心头荡漾。
软泥上的青荇,油油的在水底招摇;在康河的柔波里,我甘心做一条水草!10.诗人把“河畔的金柳”比作“夕阳中的新娘”,你认为这个比喻好吗?为什么?11.如果将“软泥上的青荇,油油的在水底招摇”中的“招摇”改为“摇动”,你认为效果有什么不同?12.“甘心”一词有什么深刻含义?试谈谈你的理解。
四、延伸拓展13.对下列这首诗的赏析,不恰当的一项是偶成戴望舒如果生命的春天重到,古旧的凝冰都哗哗地解冻,那时我会再看见灿烂的微笑,再听见明朗的呼唤棗这些迢遥的梦。
高中必修一高一数学集合复习课随堂练习及答案
高中必修一高一数学集合复习课随堂练习及答案1.已知A={x|x<3},B={x|x<a}(1)若B ⊆A ,求a 的取值范围(2)若A ⊆B ,求a 的取值范围(3)若C R A C R B ,求a 的取值范围2.若P={y|y=x 2,x ∈R},Q={y| y=x 2+1,x ∈R },则P ∩Q =3.若P={y|y=x 2,x ∈R},Q={(x ,y )| y=x 2,x ∈R },则P ∩Q =4.满足{a ,b} A ⊆{a ,b ,c ,d ,e}的集合A 的个数是[巩固提高]1.已知集合M={x|x 3—2x 2—x+2=0},则下列各数中不属于M 的一个是 ( )A .—1B .1C .2D .—22.设集合A= {x|—1≤x <2},B={ x|x<a },若A ∩B ≠φ,则a 的取值范围是( )A .a <2B .a >—2C .a >—1D .—1≤a ≤23.集合A 、B 各有12个元素,A ∩B 中有4个元素,则A ∪B 中元素个数为4.数集M={x|N k k x ∈+=,41},N={ x|N k k x ∈-=,412},则它们之间的关系是 5.已知集合M={(x,y )|x+y=2 },N={(x,y )|x —y=4},那么集合M ∩N=6.设集合A={x|x 2—px+15=0},B={x|x 2—5x+q=0},若A ∪B={2,3,5},则A= B=7.已知全集U=R ,A={x|x ≤3},B={ x|0≤x ≤5},求(C U A )∩B8.已知集合A={x|x 2—3x+2=0},B={x|x 2—mx+(m —1)=0},且B A ,求实数m 的值⊂ ≠ ⊂ ≠ ⊂ ≠9.已知A={x|x 2+x —6=0},B={x|mx+1=0},且A ∪B=A ,求实数m 的取值范围10.已知集合A={x|—2<x <—1或x >0},集合B={ x|a ≤x ≤b},满足A ∩B={x|0<x ≤2},A ∪B={x|x >—2},求a 、b 的值答案:1、(1)a ≤3 ,(2)a ≥3,(3)a <32、{y|y ≥1}3、φ4、7个[巩固提高]1、 D2、C3、20个4、M N5、{(3,—1)}6、{3,5},{2,3} 7、]5,3( 8、2 9、0,31或21- 10、—1,0⊂ ≠。
《百合花》《哦,香雪》随堂演练语文试题及答案 统编版高一必修上
《百合花》《哦,香雪》随堂演练语文试题及答案统编版高一必修上3 百合花哦,香雪随堂演练一、夯实基础1.下列加点字注音正确的一组是( )A.褶皱(zhě) 执拗(niù)挟持(xié) 夹生饭(jiá)B.碾轧(yà) 木讷(nè)抿嘴(mǐn) 轧朋友(ɡá)C.翘楚(qiáo) 兴奋(xīnɡ)撇嘴(piē) 鹿寨(zhài)D.迟钝(dùn) 笨拙(zhuó)搭讪(shàn) 不接茬(chá)答案B解析A项,“夹”应读“jiā”;C项,“撇”应读“piě”;D项,“拙”应读“zhuō”。
2.下列各句中加点成语的使用,全都正确的一项是( )①保护知识产权是一项复杂的工程,不可能一蹴而就,政府还面临着法律执行、机制、资源、教育等问题,仅仅通过几个法律文件还不够。
②南昌一生产酱油的厂家在酱油中添加了人工色素和黏稠剂,却大肆宣扬“保证不添加人工色素”,这简直是掩耳盗铃。
③随着人类社会的不断进步,新事物脱颖而出,语言作为日常交际的工具,也会相应地产生新词语来表达这些新事物。
④贝多芬晚年听力衰退,对外界的一切充耳不闻,但是,他能扼住命运的咽喉,忍受住强烈的苦痛,给世界创造了欢乐。
⑤一位老科学家指出,从事科学研究的青年人太急于求成,沉不下心来坐冷板凳,这样很难取得有重大影响力的科研成果。
⑥黄山之美绝无仅有。
描写黄山的诗文不少,在这些作品中,《黄山记》是一篇自出机杼的佳作。
A.①⑤⑥B.②③⑤C.①④⑥D.②③④答案A解析①一蹴而就:形容事情轻而易举,一下子就能完成。
②掩耳盗铃:比喻自己欺骗自己,明明掩盖不了的事偏要设法掩盖。
与句意不符。
③脱颖而出:比喻人的才能全部显示出来。
对象有误。
④充耳不闻:指塞住耳朵不听,形容不愿听取别人的意见。
不合语境。
⑤坐冷板凳:比喻长期受冷遇或因不受重视而担任清闲的职务;也比喻长期做寂寞清苦的工作;还比喻长期等待工作或长久等待接见。
高一语文随堂小测试(选择题)
高一语文随堂小测试(选择题)一、选择题(在每小题列出的四个备选答案中,只有一个是符合题目要求的。
)1.填入下面文字横线处的语句,最恰当...的一项是()整个草地都沉浸在一片迷蒙的雨雾里,看不见人影,听不到人声;被暴雨冲洗过的荒草,,光滑地躺在烂泥里,连路也看不清了。
A.像镰刀割过似的B.像用脚践踏过似的C.像用梳子梳理过似的D.像用碾子压过一遍似的2.填入下列横线处的句子,表达效果最好..的一项是()古今中外的诗人,常喜欢将珍珠与眼泪比。
阿拉伯的诗人说,牡蛎在海滩上赏月,天使的一滴眼泪,刚巧滴落在它心上,。
A.就像一颗晶莹的珍珠B.变成了一颗晶莹的珍珠C.就是一颗晶莹的珍珠D.俨然一颗晶莹的珍珠3.下列句子与“皎洁的月亮从云缝后面向下窥探着”所使用的修辞方法相同..的一项是()A.朵朵浪花托起一个个美丽的传说。
B.休闲是人生一枚甘甜的果实。
C.他委屈的泪水像开了闸似的哗哗流了出来。
D.在这时代的主旋律中,偶尔也有几声不和谐的音符。
4.下列与例句修辞方法使用相同..的一项是()例句:“我把天地拆封,将长江水掏空……我右拳打开了天化身为龙,把山河重新移动填平裂缝。
”(周杰伦《龙拳》)A.说好普通话,“知音”遍华夏。
(普通话宣传标语)B.农民卖鲜红的血,血站赚黑心的钱。
(《南方周末》)C.心飞白云深处,爱在天上人间。
(中国南方航空)D.眼睛一眨,东海岸变成西海岸。
(某航空公司广告)5.对下面文段中所使用的修辞方法及作用理解有误..的一项是()①吴越古道,处处佳景。
②或古树参天,或落英缤纷,或瀑布飞挂,或石桥横卧。
③蓊蓊郁郁的古道是那么长,长得看不到尽头;斑斑驳驳的古道是那么深,深得听不见外界的声音。
④既有大自然随处可见的鬼斧神工,又有人类千百年来的巧夺天工。
⑤一束极细的阳光从遥远的天际投射过来,抚摸着那历经悠悠岁月的古道刻痕,似乎也在驻足凝思。
⑥荒凉,有时呈现另类美丽;静默,或许倾诉别样情怀。
⑦我们仿佛在穿越古今,忽然一声清脆的鸟鸣,让我们收住思绪,又迈步前行。
高一上英语随堂测试题
高一上英语随堂测试题一、单项选择1.()—Is there a bus to the zoo?—I'm afraid there is bus to the zoo.[A]no[B]some[C]any2.()—Tom, don't throw the rubbish on the floor. We should keep the classroom .—Oh, sorry, Miss Wang.[A]clean[B]quiet[C]dirty3.()Running Man is such a(n)TV program that many young people like towatch it.[A]exciting[B]quiet[C]boring4.()The best things in life are , such as the clean air and sunshine wehave in Hangzhou.[A]free[B]old[C]expensive5.()—Can you get on well with your new classmates?—Yes. They are all me.[A]afraid of[B]angry with[C]friendly to6.()How beautifully Catherine sings! I have never heard a voice.[A]good[B]better[C]best7.()—It's one of the things in the world to stay with friends.—I agree. It always makes us relaxed.[A]worst[B]happiest[C]busiest8.()All the students in the classroom do their homework .[A]enough careful[B]careful enough[C]carefully enough9.()Look! This house is as as that one.[A]the most beautiful[B]more beautiful[C]beautiful10.()Qomolangma is about 8,844 metres high. It ismountain in the world.[A]highest[B]the highest[C]higher11.()—Have you heard the news of the traffic accident?—Yes, many people have lost their lives and the situation isbecoming .[A]worse and worse[B]better and better[C]more and more12.()—Do you know that China is one of countries in the world?—Yes, I do. It's much than the US.[A]older; older[B]the oldest; older[C]the oldest; elder13.()—This apple watch is expensive. Do you have anyones?—Yes, madam. Look, this one is¥4,188,and that one costs only¥2,588.[A]cheap[B]cheaper[C]cheapest14.()He is than the other boys in his class.[A]more taller[B]tallest[C]taller15.()Though he lives in the countryside, he never feels .[A]afraid of[B]lonely[C]sad16.()Japan and Germany are countries.[A]developed[B]developing[C]develop17.()Zhang Ping jumps in his class.[A]high[B]most high[C]the highest18.()The rain was very yesterday.[A]large[B]strong[C]heavy19.()Lily thinks foreign languages are as as science subjects.[A]important[B]most important[C]more important20.()Which is , the sun, the moon or the earth?[A]the biggest[B]big[C]bigger21.()I borrowed two books. One is in English, is in Chinese.[A]the other[B]another[C]other22.()Mrs. Jones was poor. She didn't have money.[A]much[B]many[C]little23.()The cake smells , I'd like to try some.[A]terrible[B]nice[C]badly24.()The two pictures are so that I can't tell one from the other.[A]same[B]similar[C]different25.()We have a tour plan for you.[A]threedays[B]three days[C]threeday26.()The smile on my father's face showed that he waswith me.[A]sad[B]pleased[C]angry27.()—Would you mind staying in such a noisy room?—No, but my son needs a place to study in.[A]cleaner[B]quieter[C]safer28.()She is very because she hardly does exercise.[A]health[B]unhealthy[C]healthy29.()It tastes . I like it very much.[A]well[B]bad[C]good30.()As we know, “ you rise, you fall.”[A]Faster; harder[B]The faster; the harder[C]The faster; the more hardly31.()Of the two dictionaries, the one with a brown coveris .[A]more valuable[B]the more valuable[C]the most valuable32.()Not robot in the future will look like human.[A]all[B]every[C]both33.()—What do you think of smoking?—It's . Not only for yourself but for others.[A]useful[B]harmful[C]beautiful34.()—What should I do if I don't want to be heavy?—It's easy. Just remember to exercise more and .[A]eat nothing[B]eat less[C]eat more35.()I feel really and sweat a lot when I practice yoga.[A]hurry[B]sad[C]tired36.()—Hi, Kate, you are a person, now. How's it going?—I keep on running for several weeks, and I've learned much about how to keep fit.[A]good[B]nice[C]different37.()Which do you think is important, money or health?[A]much[B]more[C]most38.()Travelling by plane is and convenient.[A]slow[B]fast[C]quickly39.()—How do you like the talk show?—I think it's , but some people think it's so .[A]wonderful enough; bored[B]enough wonderful; boring[C]wonderful enough; boring40.()Water is the cheapest drink. And it's also .[A]healthier[B]healthiest[C]the healthiest41.()Today's trains are than before.[A]more faster[B]more fastest[C]much faster42.()The Yellow River is the second river in China.[A]long[B]longest[C]the longer43.()The look on his face suggested that the news was .[A]excited; exciting[B]exciting; exciting[C]exciting; excited44.()—Would you mind staying in such a noisy room?—No, but my son needs a place to study in.[A]cleaner[B]quieter[C]safer45.()Recycling paper helps to stop from being cut down.[A]more forests[B]less forests[C]the forest46.()Using hands is really as as using brains in our daily life.[A]more important[B]less important[C]important47.()Mrs. Green is a bad dancer, but her husband is even .[A] better[B] worse[C] bad48.()—Is she older than you?—Yes, she is two years than me.[A] old[B] older[C] oldest49.()The Caspian Sea, a salt lake, is any other lake in the world.[A] largest[B] the largest[C] larger than50.()It's time for class. Please keep .[A] quite[B] quit[C] quiet51.()He has little education that he finds it impossible for him to be equal to important a task.[A] so; such[B] such; so[C] so; so52.()—What do you think of French?—In my opinion, French is English.[A] as difficult a subject as[B] as a subject difficult as[C] difficult as subject as53.()I am good at math, but his English is than mine.[A] much better[B] more better[C] very better54.()In this exam, you're asked to write a composition ofabout .[A] 90words[B] 90word[C] 90 words55.()My sister's picture is than mine, but not asas my brother's.[A] better; good[B] good; better[C] better; well56.()—There was thick haze(雾霾) in our city this spring. What do you think of it?—I think cars we drive, pollution our city will have.[A] the fewer; the fewer[B] the fewer; the less[C] the more; the fewer57.()John is a heavy smoker. His room is always smoke.[A]covered with[B]full of[C]filled in58.()I love that book, and I've read it times.[A]few[B]lots[C]several59.()You look so . Is there anything wrong with you?[A]fine[B]good[C]bad60.()Mrs. Poole is a bad dancer, but her husband is even .[A]better[B]worse[C]bad61.()These oranges taste so ________. Would you like to have one?[A]good[B]well[C]better62.()Young girls like colors while old women enjoy dark[A]bright[B]deep[C]new63.()I think the dance by Group A is better that by Group B.[A]than[B]as[C]and64.()There are cars on the streets at weekends than during the weekdays.[A]few[B]fewer[C]fewest65.()The two pictures are so that I can't tell one from the other.[A]same[B]similar[C]different66.()It was cold yesterday, but it's colder today.[A]more[B]even[C]very67.()We haven't got enough money to buy such a big and[A]expensive[B]cheap[C]similar68.()Of the four books, this one is .[A]better[B]the best[C]the better69.()China is 40 times Britain.[A]bigger[B]as big as[C]as bigger as70.()I don't want to throw them away because they are good books.[A]such[B]much[C]too71.()The price of the computer is very .[A]costly[B]expensive[C]high72.()The yellow shirt is as as the blue one.[A]cheap[B]cheaper[C]the cheapest73.()The experiment was easier than we had expected.[A]more[B]much more[C]much74.()It's time for class. Please keep .[A]quite[B]quit[C]quiet75.()My sister is three years than me.[A]younger[B]youngest[C]young76.()—Who can reach the book on the top shelf?—Jack can. He is boy of us all.[A]taller[B]a tall[C]the tallest77.()Mrs. Green is a bad dancer, but her husband is even .[A]better[B]worse[C]bad78.()He is than the other boys in his class.[A]more taller[B]tallest[C]taller79.()The bag books mine.[A]full of; are[B]full of; is[C]full in; are80.()—Is she older than you?—Yes, she is two years than me.[A]old[B]older[C]oldest81.()The beef is delicious. Would you like some ?[A]more[B]many[C]much82.()Ba Jin is one of in China.[A]best writers[B]the best writers[C]the best writer83.()—What's wrong with the book?—One page is .[A]disappeared[B]losing[C]missing答案一、单项选择1.A2.A3.A4.A5.C6.B7.B8.C9.C10.B11.A12.B13.B14.C【提示】本题考查比较级。
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1.如图所示,汽车在一段弯曲水平路面上匀速率行驶,关于它受到的水平方向的作用力方向的示意图(如右图),可能正确的是(图中F 为地面对它的静摩擦力,F 1为它行驶时所受阻力( )2.如图所示,一玻璃筒中注满清水,水中放一软木做成的小圆柱体R (圆柱体的直径略小于玻璃管的直径,轻重大小适宜,使它在水中能匀速上浮).将玻璃管的开口端用胶塞塞紧(图甲).现将玻璃筒倒置(图乙),在软木塞上升的同时,将玻璃管水平向右加速移动,观察木塞的运动.将会看到它斜向右上方运动.经过一段时间,玻璃管移至图丙中虚线所示位置,软木塞恰好运动到玻璃管的顶端.在下面四个图中,能正确反映软木塞运动轨迹的是( )3.如图所示,一条小船位于200 m 宽的河正中A 点处,从这里向下游1003m 处有一危险区,当时水流速度为4 m/s,为了使小船避开危险区沿直线到达对岸,小船在静水中的速度至少是( ) A .334 m/sB .338 m/sC .2 m/sD .4 m/s4.(2009·贵阳模拟)如图所示,两小球a 、b 从直角三角形斜面的顶端以相同大小的水平速率v 0向左、向右水平抛出,分别落在两个斜面上,三角形的两底角分别为30°和60°,则两小球a 、b 运动时间之比为( )A .1∶3B .1∶3C .3∶1 D .3∶15.如图所示,从一根内壁光滑的空心竖直钢管A 的上端边缘,沿直径方向向管内水平抛入一钢球.球与管壁多次相碰后落地(球与管壁相碰时间不计),若换一根等高但较粗的内壁光滑的钢管B ,用同样的方法抛入此钢球,则运动时间( )A .在A 管中的球运动时间长B .在B 管中的球运动时间长C .在两管中的球运动时间一样长D .无法确定6.执行救灾任务的飞机,逆风做水平匀速直线飞行,相隔0.5 s 先后释放形状和质量完全相同的两箱救灾物资1号箱和2号箱.假设风力保持不变,这两箱物资在空中下落时,地上的人沿着飞机飞行的方向看( )A .1号箱在2号箱的正下方B .两箱间的水平距离保持不变C .两箱间的水平距离越来越大D .两箱间的水平距离越来越小7.如图所示的塔吊臂上有一可以沿水平方向运动的小车A ,小车下装有吊着物体B 的吊钩,在小车A 与物体B 以相同的水平速度沿吊臂方向匀速运动的同时,吊钩将物体B 向上吊起,A 、B 之间的距离以d =H -2t 2(SI )(SI 表示国际单位制,式中H 为吊臂离地面的高度)规律变化,则物体做( )A .速度大小不变的曲线运动B .速度大小增加的曲线运动C .加速度大小方向均不变的曲线运动D .加速度大小方向均变化的曲线运动8.(2009·海淀区模拟)民族运动会上有一个骑射项目,运动员骑在奔驰的马背上,弯弓放箭射击侧向的固定目标.假设运动员骑马奔驰的速度为v 1,运动员静止时射出的弓箭速度为v 2.直跑道离固定目标的最近距离为d .要想在最短的时间内射中目标,则运动员放箭处离目标的距离应该为( )A .21222v v v -d B .22221vv v +d C .21vv dD .12v v d9.如图所示,A 、B 为两个挨得很近的小球,并列放于光滑斜面上,斜面足够长,在释放B 球的同时,将A 球以某一速度v 0水平抛出,当A 球落于斜面上的P 点时,B 球的位置位于( )A .P 点以下B .P 点以上C .P 点D .由于v 0未知,故无法确定10.一阶梯如图所示,其中每级台阶的高度和宽度都是0.4 cm ,一小球以水平速度v 飞出,欲打在第四台阶上,则v 的取值范围是( ) A .6m/s <v <22 m/sB .22m/s <v ≤3.5 m/sC .2m/s <v <6m/s D . 22 m/s <v <6m/s11.质量为60 kg 的体操运动员,做“单臂大回环”,用一只手抓住单杠,伸展身体,以单杠为轴做圆周运动.如图所示,此过程中,运动员到达最低点时手臂受的拉力至少约为(忽略空气阻力,g =10 m/s 2) ( )A .600 NB .2 400 NC .3 000 ND .3 600 N12.如图所示为A 、B 两质点做匀速圆周运动的向心加速度随半径变化的图象,其中A 为双曲线的一个分支,由图可知( ) A .A 物体运动的线速度大小不变 B.A 物体运动的角速度大小不变 C .B 物体运动的线速度大小不变D .B 物体运动的角速度与半径成正比13.如图所示,M 、N 是两个共轴圆筒的横截面,外筒半径为R ,内筒半径比R 小很多,可以忽略不计,筒的两端是封闭的,两筒之间抽成真空.两筒以相同的角速度ω绕其中心轴线(图中垂直于纸面)做匀速转动.设从M 筒内部可以通过窄缝S (与M 筒的轴线平行)不断地向外射出两种不同速率v 1和v 2的微粒,从S 处射出时的初速度的方向都是沿筒的半径方向,微粒到达N 筒后就附着在N 筒上.如果R 、v 1和v 2都不变,而ω取某一合适的值,则( )A .有可能使微粒落在N 筒上的位置都在a 处一条与S 缝平行的窄条上B .有可能使微粒落在N 筒上的位置都在某一处如b 处一条与S 缝平行的窄条上C .有可能使微粒落在N 筒上的位置分别在某两处如b 处和c 处与S 缝平行的窄条上D .只要时间足够长,N 筒上将到处都落有微粒14.如图所示,将完全相同的两小球A 、B 用长为L =0.8 m 的细绳悬于以v =4 m/s 向右运动的小车顶部,两小球与小车前后竖直壁接触,由于某种原因,小车突然停止,此时悬线中张力之比T B ∶T A 为(g =10 m/s 2) ( ) A .1∶1B .1∶2C .1∶3D .1∶415.(2009·西宁模拟)如图所示,放置在水平地面上的支架质量为M ,支架顶端用细绳拴着的摆球质量为m ,现将摆球拉至水平位置,然后释放,摆球运动过程中,支架始终不动,以下说法中正确的是( ) A .在释放瞬间,支架对地面压力为(m+M )gB .在释放瞬间,支架对地面压力为MgC .摆球到达最低点时,支架对地面压力为(m+M )gD .摆球到达最低点时,支架对地面压力为(3m+M )g16.在光滑的圆锥漏斗的内壁,两个质量相同的小球A 和B ,分别紧贴着漏斗在水平面内做匀速圆周运动,其中小球A 的位置在小球B 的上方,如图所示.下列判断正确的是( ) A .A 球的速率大于B 球的速率B .A 球的角速度大于B 球的角速度C .A 球对漏斗壁的压力大于B 球对漏斗壁的压力D .A 球的转动周期大于B 球的转动周期17.如图所示,一轻杆一端固定质量为m 的小球,以另一端O 为圆心,使小球做半径为R 的圆周运动,以下说法正确的是( ) A .小球过最高点时,杆所受的弹力可以等于零B .小球过最高点时的最小速度为gRC .小球过最高点时,杆对球的作用力可以与球所受重力方向相反D .小球过最高点时,杆对球作用力一定与小球所受重力方向相反18.质量为m 的小球由轻绳a 和b 分别系于一轻质木架上的A 点和C 点,如图所示,当轻杆绕轴BC 以角速度ω匀速转动时,小球在水平面内做匀速圆周运动,绳a 在竖直方向,绳b 在水平方向,当小球运动到图示位置时,绳b 被烧断的同时杆子停止转动,则 ( )A .小球仍在水平面内做匀速圆周运动B .在绳b 被烧断瞬间,a 绳中张力突然增大C .若角速度ω较小,小球在垂直于平面ABC 的竖直平面内摆动D .若角速度ω较大,小球可能在垂直于平面ABC 的竖直平面内做圆周运动19.如图所示,两个内壁光滑、半径不同的半球形碗,放在不同高度的水平面上,使两碗口处于同一水平面,现将质量相同的两个小球(小球半径远小于碗的半径),分别从两个碗的边缘由静止释放,当两球分别通过碗的最低点时 ( )A .两球的速度大小相等B .两球的速度大小不相等C .两球对碗底的压力大小相等D .两球对碗底的压力大小不相等20.(2009·成都模拟)一圆盘可以绕其竖直轴在水平面内转动,圆盘半径为R ,甲、乙两物体的质量分别为M 与m (M>m ),它们与圆盘之间的最大静摩擦力均为正压力的μ倍,两物体用一根长为l (l <R )的轻绳连在一起,如图所示,若将甲物体放在转轴的位置上,甲、乙之间轻绳刚好沿半径方向拉直,要使两物体与转盘之间不发生相对滑动,则转盘旋转的角速度最大值不得超过( )A .mlg m M)(-μ B .Mlg m M)(-μC .Mlg m M )(+μD .mlg m M )(+μ21.如图甲所示,在一端封闭、长约1 m的玻璃管内注满清水,水中放一个蜡烛做的蜡块,将玻璃管的开口端用胶塞塞紧.然后将这个玻璃管倒置,在蜡块沿玻璃管上升的同时,将玻璃管水平向右移动.假设从某时刻开始计时,蜡块在玻璃管内每1 s上升的距离都是10 cm,玻璃管向右匀加速平移,每1 s通过的水平位移依次是2.5 cm、7.5 cm、12.5 cm、17.5 cm.图乙中,y表示蜡块竖直方向的位移,x表示蜡块随玻璃管通过的水平位移,t=0时蜡块位于坐标原点.(1)请在图乙中描绘出蜡块4 s内的轨迹.(2)求出玻璃管向右平移的加速度a..(3)求t=2 s时蜡块的速度v2抛出一22.如图所示,M和N是两块相互平行的光滑竖直弹性板.两板之间的距离为L,高度为H.现从M板的顶端O以垂直板面的水平速度v个小球.小球在飞行中与M板和N板分别在A点和B点相碰(假设碰撞时无能量损失),并最终在两板间的中点C处落地.求:(1)小球抛出的速度v与L和H之间满足的关系.(2)OA、AB、BC在竖直方向上的距离之比.23.如图所示为车站使用的水平传送带的模型,它的水平传送带的长度为L=8 m,传送带的皮带轮的半径均为R=0.2 m,传送带的上部距地面=10 m/s的初速度水平地滑上水平传送带.已知旅行包与皮带之间的动摩擦因数为μ=0.6.g 的高度为h=0.45 m,现有一个旅行包(视为质点)以v取10 m/s2.试讨论下列问题:(1)若传送带静止,旅行包滑到B端时,人若没有及时取下,旅行包将从B端滑落.则包的落地点距B端的水平距离为多少?(2)设皮带轮顺时针匀速转动,并设水平传送带长度仍为8 m,旅行包滑上传送带的初速度恒为10 m/s.当皮带轮的角速度ω值在什么范=围内,旅行包落地点距B端的水平距离始终为(1)中所求的水平距离?若皮带轮的角速度ω140 rad/s,旅行包落地点距B端的水平距离又是多少?(3)设皮带轮以不同的角速度顺时针匀速转动,在右图所示的坐标系中画出旅行包落地点距B端的水平距离s随皮带轮的角速度ω变化的图象.24.如图所示,细绳长l,吊一个质量为m的铁球,绳受到大小为2mg的拉力就会断裂,绳的上端系一质量不计的环,环套在光滑水平杆上.起初环带着球一起以速度v=gl向右运动,在A处环被挡住而停下的瞬间,绳子所受拉力为多少?在以后的运动过程中,球是先碰墙还是先碰地?第一次的碰撞点离B点的距离是多少?(已知A处离墙的水平距离为l,球离地的高度h=2l)25.如图所示,小球从光滑的圆弧轨道下滑至水平轨道末端时,光电装置被触动,控制电路会使转筒立刻以某一角速度匀速连续转动起来.转筒的底面半径为R ,已知轨道末端与转筒上部相平,与转筒的转轴距离为L ,且与转筒侧壁上的小孔的高度差为h ;开始时转筒静止,且小孔正对着轨道方向.现让一小球从圆弧轨道上的某处无初速滑下,若正好能钻入转筒的小孔(小孔比小球略大,小球视为质点,不计空气阻力,重力加速度为g ),求:(1)小球从圆弧轨道上释放时的高度H . (2)转筒转动的角速度ω.25.(2009·海淀区模拟)如图所示,左图是游乐场中过山车的实物图片,右图是过山车的原理图.在原理图中半径分别为R 1=2.0 m 和R 2=8.0 m 的两个光滑圆形轨道,固定在倾角为α=37°斜轨道面上的Q 、Z 两点,且两圆形轨道的最高点A 、B 均与P 点平齐,圆形轨道与斜轨道之间圆滑连接.现使小车(视作质点)从P 点以一定的初速度沿斜面向下运动.已知斜轨道面与小车间的动摩擦因数为μ=241,g =10m/s 2,sin 37°=0.6,cos 37°=0.8.问:(1)若小车恰好能通过第一个圆形轨道的最高点A 处,则其在P 点的初速度应为多大? (2)若小车在P 点的初速度为10 m/s ,则小车能否安全通过两个圆形轨道?。