单选-学生版

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受力分析-学生版

受力分析-学生版

2018年12月31日高中物理作业学校:___________姓名:___________班级:___________考号:___________一、单选题1.下列“画阴影”物体受力分析图正确的是()A.接触面光滑B.竖直绳悬挂光滑球C.物体冲上粗糙斜面D.两物体一起向右匀速运动2.如图所示,物体静止在固定的斜面上,则对物体的受力分析,下列正确的是()A.重力、支持力、压力B.重力、支持力、摩擦力C.重力、下滑力、支持力、摩擦力D.重力、下滑力、支持力、压力、摩擦力3.如图所示,A、B两物体叠放在斜面上,物体B的上表面水平,斜面与A、B两物体均静止不动,下列关于A物体受力分析正确的是A.A物体受到重力、B的支持力、B的摩擦力作用B.A物体受重力、B的支持力、B的摩擦力和斜面的支持力作用C.A物体受重力、B的支持力和斜面的支持力作用D.A物体受重力、B的支持力作用4.如图所示,物体A靠在竖直的墙面C上,在竖直向上的力F作用下,A、B物体均保持静止,则物体A受力分析示意图正确的是()A.B.C.D.5.如图,重为200牛的重物由ON、OM绳悬挂在天花板上,已知(ONM=60(,(OMN=30(,请画出受力分析图并求绳ON和绳OM受到的拉力的大小?6.如图所示,一切摩擦不计,各物体的受力分析正确的有()7.下列关于在粗糙斜面上自由下滑物体的受力分析示意图中,正确的是()A. B.C. D.8.下列处于静止状态的物体的受力分析图示中,正确的是:( )9.一物体沿竖直墙面下滑,选择物体作为研究对象,其受力分析正确的是()10.如图所示,置于斜面上的物体M 在沿斜面向上的力F 作用下而处于静止状态,现对M 进行受力分析,下列说法中正确的是( )A .可能受三个力作用B .一定受四个力作用C .可能受四个力作用D .摩擦力方向一定沿斜面向上11.如图 所示,壁虎沿竖直墙面斜向上匀速爬行,速度为 v ,壁虎所受的重力为 G ,与墙面之间的摩擦力 为关于壁虎在竖直墙面内的受力分析,下列示意图中正确的是A .B .C .D .A B CDG12.足球运动员将足球踢出后在空中运动,下列对足球在向右下方运动过程中某时刻的受力分析图正确的是表示重力,f表示空气阻力,F表示运动员对球的作用力A.B.C.D.13.一物体沿粗糙的斜面以初速度v0向上滑动,在上滑的过程中,(G表示物体的重力,F N表示支持力,F f表示摩擦力),下面物体受力分析的示意图正确的是()14.当小车向右做匀加速运动时,两个小球的受力情况()A.A球受3个力作用,B球受2个力作用B.A球受2个力作用,B球受3个力作用C.A球受3个力作用,B球受3个力作用D.A球受2个力作用,B球受2个力作用15.对以下静止的物体受力分析正确的是 ( )16.图中,一个质量均匀的球放在互成120°的两块光滑平面上,保持静止,OA是水平的.关于球的受力分析,下面说法中正确的是( )A.球受重力、平面OA和OB的弹力B.球除了受重力外,只受到平面OA的弹力C.平面OA对球的弹力,方向向上偏左D.平面OA对球的弹力,方向竖直向上17.下列对圆锥摆的受力分析正确的是()18.如图所示足球运动员已将足球踢向空中,在下列描述足球在向斜上方飞行过程中某时刻的受力图中,F为脚对球的作用力,F f为空气阻力,则下列受力分析图正确的是A.B.C.D.19.如图所示,墙壁清洁机器人在竖直玻璃墙面上由A点沿直线匀速“爬行”到右上方B 点。

专业技能考试试题库-学生版

专业技能考试试题库-学生版

地图学A一、 单项选择题1. 图号为J53D012001的地图是( D )比例尺地形图。

A. 1:1万B. 1:2.5万C. 1:5万D. 1:10万2. 我国自2008年7年1日起启用新坐标系是以下哪个坐标系( D )。

A. 1985国家高程基准B. 1954年北京坐标系C. 1980年国家大地坐标系D. CGCS20003. 我国现行的1:50万地图,都采用( A )。

A.高斯-克吕格投影B.多圆锥投影C.墨卡托投影D.正轴等方位投影4. 在大地测量中关于经纬度的三种提法,其中不包括( D )。

A. 大地经纬度B.天文经纬度C.地心经纬度D.地理经纬度5. 数学要素是保证地图数学精确性的基础,以下不属于地图的数学要素是( D )。

A.地图投影B.坐标网C.比例尺D.接图表6. 我国1:10万的地形图,采用( B )分带投影以保证地图必要的精度。

A. 3°B. 6°C. 9°D. 12°7. 请指出右面地形图(图1)中的未出现的错误( D )。

A. 未加固陡坎缺少高程点B. 等高线穿过房屋符号C. 高程点注记压盖房屋符号D. 异常高程未剔除8. 根据图号J49D012012计算该图右边邻接的图幅图号为( A )A. J50D012001B. J49D012011C. J49D012001D. I50D0120019. 在等高线中,间曲线是按规定等高距的( A )高程加绘的长虚线。

A. 1/2B.1/4C. 2D. 1/8二、 判断题1. 常用的1:2000地形图是国家基本比例尺地形图之一。

( F )2. 在高斯-克吕格坐标网中,为了避免横坐标出现负值,规定横坐标轴向西平移500km 。

( T )3. 在地貌表示中示坡线坡线与等高线相连的一端指向上坡方向,另一端指向下坡方向。

( T )4. 1956年黄海高程系和1985国家高程基准相差29mm 。

( T )5. 等高线表示中,最粗的等高线叫首曲线。

必要条件、充分条件与充要条件的判断·单选题50练(学生版)

必要条件、充分条件与充要条件的判断·单选题50练(学生版)

B. 必要不充分条件
C. 充分不必要条件
D. 既不充分也不必要条件
13.“ ൅ ”是“ ln
ሻ ൅ ”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
14.命题 ⣠
为锐角三角形,命题 ⣠
中, sin t cos . 则命题 是命题 的( )
A. 充分不必要条件
19.设 ,
,则“ ln t ln ”是“ ln t ”的( )
A. 充分不必要条件
20.设
,则“
A. 充分不必要条件
B. 必要不充分条件
C. 充要条件
൅ ”是“ ൅ ”的( )
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 D. 既不充分又不必要条件
21.已知 是
的内角,则“ cos t ”是“ sin t ”的( )
൅ 成立, ⣠ 函数 ሻ t
ሻ 是减函数, 则 是 的( )
A. 充分不必要条件
B. 必要不充分条件
C. 充要条件
D. 既不充分也不必要条件
9.下列命题为真命题的是( )
A. 若 ൅ ൅ ,则 ൅
B. 若 t t ,则 t
C. 若 t t t ,则 ൅
D. 若 t t t ,则 t
10.设
,则“ t ”是“ lg
ሻ t ”的( )
A. 充分不必要条件
B. 必要不充分条件
C. 充要条件
D. 既不充分也不必要条件
11.已知 :“函数 t
在 h ሻ 上是增函数”, :“ t ”,则 是 的( )
A. 充分不必要条件
B. 必要不充分条件

高中语法专项练习单选100题-主谓一致-学生版

高中语法专项练习单选100题-主谓一致-学生版

高中语法专项练习单选100题—— 主谓一致养成良好的答题习惯,是决定高考英语成败的决定性因素之一。

做题前,要认真阅读题目要求、题干和选项,并对答案内容作出合理预测;答题时,切忌跟着感觉走,最好按照题目序号来做,不会的或存在疑问的,要做好标记,要善于发现,找到题目的题眼所在,规范答题,书写工整;答题完毕时,要认真检查,查漏补缺,纠正错误。

总之,在最后的复习阶段,学生们不要加大练习量。

在这个时候,学生要尽快找到适合自己的答题方式,最重要的是以平常心去面对考试。

英语最后的复习要树立信心,考试的时候遇到难题要想“别人也难”,遇到容易的则要想“细心审题”。

越到最后,考生越要回归基础,单词最好再梳理一遍,这样有利于提高阅读理解的效率。

另附高考复习方法和考前30天冲刺复习方法。

1. I am watching TV while my mother ______.A. cooksB. cookingC. will cookD. is cooking2. Food and medical supplies________ to all the residents after the hurricane last Sunday.A. distributeB. distributedC. are distributedD. were distributed3. A survey carried out last year showed that 80% of the middle-aged in this city ______ in favour of theproposal on health care reform.A. isB. areC. wasD. were4. The fact is that there is only one correct answer to this question. Either you or I _______ wrong.A. amB. isC. areD. have been5. Tom's father as well as his mother ________ that he ______ at home.A. suggest; stayB. suggests; staysC. suggest; staysD. suggests; stay6. The peaceful landscape as well as many green counties _______a true feast for eyes, with its green hills_____with sheep and cattle.A. are, dottedB. is, dottedC. is, dottingD. are, dotting7. WeChat (微信) as well as telephones ________ an important part in our daily communication.A. are playingB. have playedC. is playingD. play8. Generally, students' inner motivation with high expectations from others ______ essential to their development.A. isB. areC. wasD. were9. Years of te aching experience as a volunteer has made him convinced that for studentsˈ development timely encouragement along with careful instructions_______.A. countingB. countedC. countsD. count10. Two-fifths of the highway ______ so far.A. has been completedB. was completedC. have been completedD. has completed11. About sixty percent of the students______ from the south; the rest of them ______from the north and foreign countries.A. are; isB. are; areC. is; isD. is; are12. Thousands of the people______dead or injured and two thirds of the food______ lost.A. were, isB. were, wasC. are, areD. were, are13. He hurriedly left, and the rest of the work ______ left to me.A. isB. areC. wasD. were14. In the school gym, where the opening ceremony _________, some teachers and students were making preparations.A. is being heldB. will be heldC. has been heldD. was to be held15. Mr. Johnson, our teacher and friend, ________ invited to attend the meeting, ________ he would deliver a speech to the students.A. was; whichB. were; thatC. were; whereD. was; where16. This is one of the best films ________.A. that has shown this yearB. that have shown this yearC. that has been shown this yearD. that have been shown this year17. The pen ______ so well and I think it is worth ______. To be honest, you will regret it if you don't take it.A. is written; buyingB. writes; to be boughtC. writes; buyingD. wrote; being bought.18. Facial recognition technology employed in office buildings ______ the time it takes the security staff ______ routine safety check.A. have reduced; performingB. has reduced; performingC. has reduced; to performD. have reduced; to perform19. It ______ that the house ______ his brother.A. has been confirmed; is belonged toB. has confirmed; is belonged toC. has been confirmed; belongs toD. has confirmed; belongs to20. ——Excuse me, would you please tell me if the sports meeting_____on time?——If it_______tomorrow, we will have to put it off.A. will hold; snowsB. will be held; snowsC. will be held; snowD. holds; will snow21. My friend Tom said that he would come to my birthday party tonight, but he _________ so far.A. doesnˈtB. isnˈt comingC. hasnˈt comeD. didnˈt come22. The League secretary and monitor _______ asked to clean the meeting room _______other day.A. are; eachB. is; eachC. is; everyD. are; every23. Look! The building which _____ now will be used as a library.A. is being builtB. to be builtC. is builtD. being built24. Listening to loud music at rock concerts ______ caused hearing loss in some teenagers.A. isB. areC. hasD. have25. Those people _____ a general understanding of the present situation.A. lack ofB. are lacking ofC. lackD. are in lack26. This is the first time that I ______at the meeting.A. had spokenB. amC. wasD. have spoken27. At the foot of the mountain _____ many lakes. Some are large enough to hold several towns.A. liesB. lieC. lyingD. lay28. The ancient church ______ the 13th century.A. is dating fromB. is dated fromC. dates back toD. is dated back to29. Some of the rescue workers and doctors______ in the ruins.A. trapB. trappedC. were trappedD. traps30. Large quantities of solid fuel ________ consumed every day and too much carbon dioxide is sent into the air, which in turn ________ the going up of temperature.A. is; results inB. are; results inC. is; leads toD. are; results from31. China's first anti-corruption TV show In the Name of People ______ over 350 million times.A. has viewedB. has been viewedC. have viewedD. have been viewed32. Our class ________ 55 lively boys and girls, and Mr. Yu is strict with each of us.A. makes upB. is made up ofC. is built upD. builds up33. The workers demanded that they ______ more rest.A. haveB. hadC. will haveD. would have34. _________ you or the principal _________ the prizes to these gifted students at the meeting?A. Is…presentingB. Are…presentingC. Is… to presentD. Are…to present35. He is the only one of the students who _______ the winner of scholarship for 3 years.A. have beenB. has beenC. isD. are36. —Hi, let’s go skating.—Sorry, I’m busy right now. I __________ in an application form for a new job.A. fillB. am fillingC. have filledD. will fill37. — I really want to relax myself. Could we see City Danger tonight?— Sure! The actor_______ a hero used to be a schoolteacher. I like him very much.A. who playB. which playsC. who playsD. that play38. The number of foreign students attending Chinese universities ________increasing since 2003.A. isB. areC. has beenD. have been39. One or two days _______ enough to visit the city.A. isB. areC. amD. be40. _____ either she or I going to Hongkong this week?A. AreB. IsC. WasD. Am41. Either you or he my umbrella by mistake. I can't find it anywhere.A. takeB. takesC. has takenD. have taken42. Neither Tom nor his sisters ______ going abroad for further study.A. areB. isC. wasD. were43. Not only Tom but also his wife ______ fond of watching television.A. areB. wereC. beD. is44. There_______a football match next Sunday. If it_________ ,we'll have to put it off.A. is going to have; will rainB. is going to have; rainsC. is going to be; rainsD. is going to be; will rain45. There ______ a folk music concert in Xinjiang Opera Theater next month.A. is going to haveB. will haveC. isD. is going to be46. Look, there ______ an apple, a computer and three notebooks on the desk.A. areB. haveC. isD. has47. Linda, comes to my office, please. There ______ a few things I need to discuss with you.A. isB. areC. hasD. have48. There ______ hundreds of people in the park.A. isB. areC. amD. be49. There ______ a pen, two books and many pencils on the desk.A. areB. haveC. hasD. is50. There ______ a telephone call for my sister yesterday.A. isB. areC. wasD. were51. There ______ on the wall. They are very beautiful.A. are photoesB. are photosC. is a photoD. is photos52. QQ (微信) as well as telephones ______ an important part in our daily communication.A. are playingB. have playedC. is playingD. play53. I feel it is you as well as your wife that ______ for your son's bad performance at school.A. is going to be blamedB. are to blameC. are to be blamedD. is to be blamed54. The famous magician, as well as his assistants, ________ to perform at the Chinaˈs Got Talent in 2015.A. were invitedB. was invitedC. have been invitedD. has been invited55. Actually, the garden, as well as the trees around it, a man living across the street.A. is belonged toB. are belonged toC. belongs toD. belong to56. Nowadays, cycling, along with jogging and swimming, ______ as one of the best all-round forms of exercise.A. regardB. is regardedC. are regardedD. regards57. James with his friends____fond of playing the guitar.A. isB. doC. areD. does58. I was told that your father, together with his two students, ______ going to Japan for a visit.A. wouldB. wasC. wereD. had decided59. I was told that your father, together with his two students,______ going to Japan for a visit.A. wouldB. wasC. wereD. had decided60. --Have you seen Steven this morning?--Yes! Steven, together with his classmates, ______ around the campus now.A. jogsB. joggingC. is joggingD. are jogging61. From the point of my view, it was some of the players, rather than the coach, that _______ responsible for the loss of the game.A. areB. isC. wereD. was62. —Volunteering is becoming increasingly popular in China.—Yeah, people ______ now aware that helping others is helping themselves.A. isB. wasC. wereD. are63. Our class________made up of 60 students. The class________very friendly.A. is; areB. are; isC. is; isD. are; are64. The number of students in the high school ______ over 1500.A. haveB. hasC. isD. are65. The family _________ early risers, who often __________ morning exercises in the park.A. are; doesB. is; doesC. are; doD. is; do66. Three hours with your girlfriend ______ to be a short time.A. seemB. seemsC. is seemingD. has seemed67. The wounded ________ sent to the hospital at once yesterday.A. wereB. areC. isD. was68. On the table she found a piece of paper ____ some puzzling secret codes.A. which was writtenB. that was writtenC. on which were writtenD. on that was written69. —Tom, how many women teachers are there in your school?—In our school, ______ of the teachers ______ women teachers.A. third fourth; areB. third fourth; isC. three fourths; isD. three fourths; are70. ---What's wrong with you? You look unhappy.---Three fourths of my apples________stolen.A. areB. isC. wereD. was71. As a result of the serious flood, two-thirds of the buildings in the area ______.A. need repairingB. needs to repairC. needs repairingD. need to repair72. As is reported, many a military medical worker ______ in Wuhan to help fight the deadly epidemic.A. has been stationedB. has stationedC. have stationedD. have been stationed73. ______ Li Lei ______ Wei Fang speak English well.A. Both; andB. Neither; norC. Either; orD. Not only; but also74. Professor James will give us a lecture on the Western culture, but when and where yet ______.A. hasn't been decidedB. haven't decidedC. isn't being decidedD. aren't decided75. Opposite to the park ______ two bookstores.A. isB. areC. beD. have76. The wonderful life in high school you look forward to _______A. comingB. is comingC. cameD. was coming77. The number of extra-curricular activities and teachers _____ my interest ______ increasing.A. which attract; areB. who attracts; isC. that attracts; areD. that attract; is78. In the last few years, China ______ great achievements in environmental protection.A. has madeB. had madeC. was makingD. is making79. My parents ______ the news on TV at this time yesterday.A. watchedB. were watchingC. are watchingD. was watching80. Where ______ the twins ______?A. are; fromB. are; come fromC. is; fromD. does; come from81. ______ your brother ______ housework on Sunday?A. Does; doesB. Does; doC. Do; doesD. Do; do82. The teacher said the earth ______ around the sun.A. wentB. goesC. has goneD. go83. This song sounds very pleasant. Letˈs go upstairs and see who____.A. is singingB. singsC. has sungD. sang84. So absorbed _______ he in the novel that he did not notice his father at the door.A. isB. wasC. didD. does85. —Lily and Jane aren't home, are they?—No, they ______ to England on business.A. has goneB. have goneC. have beenD. has been86. Listening to loud music at live rock concerts______caused hearing loss in some teenagers.A. areB. isC. haveD. has87. Surfing the Internet ________a way of________for information.A. is. lookB. are, lookC. is, lookingD. are, looking88. Eating more fruits and vegetables ______ good to your health.A. doesB. areC. isD. do89. Here is a guide that gives information on exercise for beginners who ______ interested in getting into shape.A. areB. wereC. beD. is90. Such athletes as Li Na ______ widely know, of whose achievements some ______ really amazing.A. are; areB. is; isC. are; isD. is; are91. One of the presents which ______ by my sister ______ on my way home.A. was sent; were lostB. were sent; was lostC. was sent; lostD. were sent; loses92. As our teacher often puts it, ________ to key universities ________ those who will never give up halfway.A. being admitted; areB. admitting; isC. admitted; areD. to be admitted; is93. I who ______ blind can give some advice to those who ______ .A. am, seeB. is, seeC. are, seeD. am, sees94. One of the presents which ______ by my sister ______ on my way home.A. was sent; were lostB. were sent; was lostC. was sent; lostD. were sent; loses95. What she bought yesterday ______ a few apples and some clothes.A. areB. isC. wasD. were96. How close parents are to their children ______ a strong influence on the development of the children’scharacters.A. havingB. hadC. hasD. have97. It is what you do rather than what you say that ______.A. matterB. mattersC. to matterD. mattering98. It was only at the very end of the 19th century that this practice _______.A. abolishedB. was abolishedC. had abolishedD. has been abolished99. —Now Nanjing is so beautiful that I can’t recognize it when I came back.— Yes. Great changes ________in the past ten years.A. has taken placeB. took placeC. take placeD. have taken place100. It is reported that more than 70% of water ______ in the past five years.A. was pollutedB. were pollutedC. have been pollutedD. has been polluted对高三学生而言,就是要通过训练转化为学生的答题能力。

2024年高考真题分类专项(解析几何)(学生版)

2024年高考真题分类专项(解析几何)(学生版)

2024年高考真题分类专项(解析几何)一、单选题1.(2024年北京高考数学真题)圆22260x y x y +-+=的圆心到直线20x y -+=的距离为( )A B .2C .3D .2.(2024年天津高考数学真题)双曲线22221()00a x y a b b >-=>,的左、右焦点分别为12.F F P、是双曲线右支上一点,且直线2PF 的斜率为2.12PF F △是面积为8的直角三角形,则双曲线的方程为( )A .22182y x -=B .22184x y -=C .22128x y -=D .22148x y -=3.(2024年新课标全国Ⅱ卷数学真题)已知曲线C :2216x y +=(0y >),从C 上任意一点P 向x 轴作垂线段PP ',P '为垂足,则线段PP '的中点M 的轨迹方程为( ) A .221164x y +=(0y >)B .221168x y +=(0y >)C .221164y x +=(0y >)D .221168y x +=(0y >)4.(2024年高考全国甲卷数学(文)真题)已知直线20ax by a b +-+=与圆2241=0C x y y ++-:交于,A B 两点,则AB 的最小值为( )A .2B .3C .4D .65.(2024年高考全国甲卷数学(理)真题)已知双曲线的两个焦点分别为()()0,4,0,4-,点()6,4-在该双曲线上,则该双曲线的离心率为( )A.4 B .3C .2D6.(2024年高考全国甲卷数学(理)真题)已知b 是,a c 的等差中项,直线0ax by c 与圆22410x y y ++-=交于,A B 两点,则AB 的最小值为( ) A .1B .2C .4D.二、多选题7.(2024年新课标全国Ⅱ卷数学真题)抛物线C :24y x =的准线为l ,P 为C 上的动点,过P 作22:(4)1A x y +-=⊙的一条切线,Q 为切点,过P 作l 的垂线,垂足为B ,则( ) A .l 与A 相切B .当P ,A ,B三点共线时,||PQ = C .当||2PB =时,PA AB ⊥D .满足||||PA PB =的点P 有且仅有2个8.(2024年新课标全国Ⅱ卷数学真题)设计一条美丽的丝带,其造型可以看作图中的曲线C 的一部分.已知C 过坐标原点O .且C 上的点满足:横坐标大于2-,到点(2,0)F 的距离与到定直线(0)x a a =<的距离之积为4,则( )A .2a =- B.点在C 上C .C 在第一象限的点的纵坐标的最大值为1D .当点()00,x y 在C 上时,0042y x ≤+三、填空题9.(2024年上海夏季高考数学真题)已知抛物线24y x =上有一点P 到准线的距离为9,那么点P 到x 轴的距离为 .10.(2024年北京高考数学真题)抛物线216y x =的焦点坐标为 .11.(2024年北京高考数学真题)若直线()3y k x =-与双曲线2214x y -=只有一个公共点,则k 的一个取值为 .12.(2024年天津高考数学真题)圆22(1)25-+=x y 的圆心与抛物线22(0)y px p =>的焦点F 重合,A 为两曲线的交点,则原点到直线AF 的距离为 .13.(2024年新课标全国Ⅱ卷数学真题)设双曲线2222:1(0,0)x y C a b a b-=>>的左右焦点分别为12F F 、,过2F 作平行于y 轴的直线交C 于A ,B 两点,若1||13,||10F A AB ==,则C 的离心率为 .四、解答题14.(2024年上海夏季高考数学真题(网络回忆版))已知双曲线222Γ:1,(0),y x b b-=>左右顶点分别为12,A A ,过点()2,0M -的直线l 交双曲线Γ于,P Q 两点. (1)若离心率2e =时,求b 的值.(2)若2b MA P =△为等腰三角形时,且点P 在第一象限,求点P 的坐标. (3)连接OQ 并延长,交双曲线Γ于点R ,若121A R A P ⋅=,求b 的取值范围.15.(2024年北京高考数学真题)已知椭圆E :()222210x y a b a b +=>>,以椭圆E 的焦点和短轴端点为顶点的四边形是边长为2的正方形.过点()(0,t t >且斜率存在的直线与椭圆E 交于不同的两点,A B ,过点A 和()0,1C 的直线AC 与椭圆E 的另一个交点为D . (1)求椭圆E 的方程及离心率; (2)若直线BD 的斜率为0,求t 的值.16.(2024年天津高考数学真题)已知椭圆22221(0)x y a b a b+=>>椭圆的离心率12e =.左顶点为A ,下顶点为B C ,是线段OB 的中点,其中ABC S △. (1)求椭圆方程.(2)过点30,2⎛⎫- ⎪⎝⎭的动直线与椭圆有两个交点P Q ,.在y 轴上是否存在点T 使得0TP TQ ⋅≤.若存在求出这个T 点纵坐标的取值范围,若不存在请说明理由.17.(2024年新课标全国Ⅱ卷数学真题)已知(0,3)A 和33,2P ⎛⎫ ⎪⎝⎭为椭圆2222:1(0)x y C a b a b+=>>上两点.(1)求C 的离心率;(2)若过P 的直线l 交C 于另一点B ,且ABP 的面积为9,求l 的方程.18.(2024年高考全国甲卷数学(理)真题)已知椭圆2222:1(0)x y C a b a b+=>>的右焦点为F ,点31,2M ⎛⎫⎪⎝⎭在C 上,且MF x ⊥轴.(1)求C 的方程;(2)过点()4,0P 的直线交C 于,A B 两点,N 为线段FP 的中点,直线NB 交直线MF 于点Q ,证明:AQ y ⊥轴.。

(完整版)50道中考代词单选真题(学生版)

(完整版)50道中考代词单选真题(学生版)

50道中考代词单选真题1. —Mum, I’m hungry. Is thereto eat?—Yes, you can have some bread on the table.A. somethingB. nothingC. anything2. I have two sisters, but_________of them is a teacher.A. allB. neitherC. bothD. none3. He invited some classmates to come to his party,but _______ came.A. a littleB. littleC. a fewD. few4. —The teachers in that school speak either English or French, or even _________.—That's so cool!A. allB. bothC. neitherD. none5. —What kind of house would you like? ,—I'd like __________with a garden in front of__________.A. It, oneB. one, oneC. one, itD. it, it6. A smile costs ________, but gives so much.A. somethingB. anythingC. nothingD. everything7. No matter how difficult things seem to be, you should say to _____ “Never mind!” A positive attitude is the key to success.A. themselvesB. ourselvesC. yourselves8. ______ was born being good at all things. You can do well in things through hard work. As an English learner, you can’t be excellent without enough practice.A. EverybodyB. SomebodyC. Nobody9. —Does your English teacher chat with you on QQ?—Yes, sometime s, It’swe enjoy doing at weekends.A. anythingB. somethingC. everythingD. nothing10. —Your tea smells great!—It’s from India. Would you like ______?A. itB. thisC. someD. little11. —Which magazine do you like bet ter, Crazy Reading or Teen’s space?—I like ___of them. They are useful for English lessons.A. noneB. neitherC. allD. both12. I've got several novels written by MoYan. You can borrow ________ if you like.A. itB. oneC. everyD. Either13. — Have you got anything to do this afternoon, Lucy and Lily?—Yes. ________ of us are going to the home for the elderly.A. EachB. EitherC. BothD. All14. My friend Jenny often helps ______ with ______ English.A. I; meB. me; myC. my; meD. I; my15. My parents showed ________ some old pictures that brought back sweet memories.A. IB. meC. myD. mine16. Many people think Peng Liyuan is the most beautiful First Lady. And ________ songs are also well-known.A. hisB. herC. their17. —Jim, please help ______ to some bread.—Thank you.A. himselfB. yourselfC. herselfD. myself18. The man has _____ friends in this city, so he often stays at home.A. a fewB. fewC. littleD. a little19. We need to go shopping. There is_________ juice left in the fridge.A. littleB. fewC. manyD. much20. —Which of the two T-shirts will you take?—I’ll take. One is for my brother and the other is for myself.A. eitherB. bothC. neitherD. all21.—Don't be angry with your kid when he makes a mistake again, will you?—No. I won't. I know that ______of us are perfect after all.A. noneB. neitherC. eachD. all22. —Would you like some juice or coffee?—_______ is OK. I really don’t care.A. BothB. EitherC. AllD. Neither23. —Excuse me, is this _______ iPad mini?—No, it isn’t. _______ is at home.A. your; MineB. your; MyC. yours; MyD. yours; Mine24. —What do you think of the movie by Zhao Wei?—Terrific. I like ______ very much.A. itB. himC. herD. you25. —I am a little hungry, Mom.—There are some cakes on the plate. You can take__________.A. itB. oneC. thatD. this26. —Who helped Betty tidy up the bedroom just now?—_________. She cleaned it all by herself.A. SomebodyB. NobodyC. EverybodyD. Anybody27. —Who helped you clean the bedroom yesterday, Kitty?—_______. I cleaned it all by myself.A. NobodyB. EverybodyC. SomebodyD. Anybody28. This is not my Walkman. It's ________. Mine is over there.A. ourB. hersC. yourD. my29. After Mo Yan won the Nobel Prize, more people began to read ________ books.A. heB. himC. hisD. himself30. —Everyone should learn to say “I love you” to their parents often.—I think so. _______ in life is more important than family.A. SomethingB. EverythingC. AnythingD. Nothing31. —Which do you prefer, a CD player or a walkman?—___________. I prefer a portable computer.A. BothB. EitherC. NoneD. Neither32. My host family tried to cook _____ for me when I studied in New Zealand.A. different somethingB. different anythingC. something differentD. anything different33. My family has two dogs. One is white, ____ is black.A. otherB. anotherC. the other D others34. —It snowed heavily last night. Is everyone in our class here today?—Yes, and of us was late for school this morning.A. noneB. neitherC. allD. either35. —All the volunteers were very tired, butof them took a rest.—They were busy looking for the missing people.A. neitherB. allC. bothD. none36. —Is your friend Michael still in Australia?—I don't know. I have ______ information about him because we haven't seen each other for ____ years.A. a little ; a fewB. little; a fewC. a few; a littleD. few; a little37. 一Who teaches ________ music?一Nobody. I teach ________.A. you; mineB. your; myselfC. you; myself38.—Have you read today’s newspaper?—No, I haven’t. Is therein it?A. something importantB. anything specialC. new anything39. China is larger thanin Africa.A. the other countriesB. any countryC. any of the other countriesD. any other country40. Is that bike?A. sheB. hersC. herD. she's41. Lost in Thailand is a ve ry successful comedy. It’sfavorite movie.A. meB. mineC. ID. my42.They are able to talk openly to each other whenever _________ of them feels hurt.A. eitherB. bothC. someD. all43. —Mike,is that new bike_______?—Yes.My mother bought it for me yesterday.A.you B.your C. yours D. yourself44. —Is New Zealand a big country?—No, New Zealand only has two islands. One is North Island;is South Island.A. otherB. the otherC. another45. —Would you like _____ to eat?—No, thanks.A. somethingB. anythingC. nothing46. _______ is waiting for at the gate. He wants to say thanks to you.A. SomebodyB. AnybodyC. EverybodyD. Nobody47. The song I Believe I Can Fly tells us that believing in_________ is very important.A. themselvesB. itselfC. ourselvesD. yourselves48. My parents gave _________a nice toy bear for my birthday.A. IB. mineC. myD. me49. — Wow! You've got so many clothes.—But ________ of them are in fashion now.A. allB. bothC. neitherD. none50.You have just read the newspaper. Did you find_____in it?A. interesting anythingB. anything interestingC. interesting something。

Java选择题(学生版)

Java选择题(学生版)

1111111111111Java练习题一、单选题1. Java程序的执行过程中用到一套JDK工具,其中java.exe是指()(p5 表1.1)A. Java文档生成器B. Java解释器C. Java编译器D. Java类分解器2. 编译Java程序的命令文件名是()(p5 表1.1)A. java.exeB. javac.exeC. javacD. appletviewer.exe3. 编译Java程序filename.java后生成的程序是()(p2 图1.3)A. filename.htmlB. FileName.classC. filename.classD. filename.jar4. 已知JavaDemo.class是一个独立应用程序的class文件,下面的执行语句中正确的是()。

(p2 图1.3,p5 表1.1,p5例1.1)A. java JavaDemo.classB. java JavademoC. javac JavaDemoD. java JavaDemo5. 设JavaAppletDemo.java是一个Applet程序,如果要执行这个Applet(假定其web 文件是JavaAppletDemo.html),正确的操作语句是()。

(p5 表1.1,p7例1.2)A. appletviewer javaAppletDemo.javaB. appletviewer JavaAppletDemo.classC. appletviewer JavaAppletDemo.htmD. appletviewer JavaAppletDemo.html6. 编译Java的Application或Applet 源程序文件将产生相应的字节码文件,这些字节码文件的扩展名为()。

(p2 图1.3)A. javaB. classC. htmlD. exe7. Java编译器将源代码翻译成独立于平台的格式是()。

商业银行经营学题库(学生版)

商业银行经营学题库(学生版)

一、单选题库:1.商业银行利用其吸收的存款,通过发放贷款的方式,创造出更多的存款,体现了商业银行如下职能中的哪一项职能(C)A.信用中介B.支付中介C.信用创造D.金融服务职能2.《巴塞尔协议》对核心资本充足率的要求(C)A.大于8%B.小于8%C.大于4%D.小于4%3.在活期存款的各种取款方式中,最传统的是支票取款,因此,活期存款又称为(B )A.交易账户 B.支票存款 C.可转让支付凭证账户 D.货币市场存款账户4.在商业信用证业务中,第一付款人是(A)A.开证银行B.进口商C.议付行D.出口商5.票据发行便利属于商业银行的一项什么业务(D )A.担保业务B.贷款业务C.负债业务D.承诺业务6.商业银行作为交易的一方,其参与远期利率协议交易的目的在于(C )A.规避汇率风险B.规避操作风险C.规避利率风险D.规避市场风险7.从套期保值的角度看,外汇期货的买房参与外汇期货交易的目的在于(B )A.规避利率风险B.规避汇率风险C.规避国家风险D.规避信用风险8.从套期保值的角度看,交易者从事利率期货交易的目的在于(A)A.规避利率风险B.规避汇率风险C.规避国家风险D.规避信用风险9.期权的买方预测未来标的物的价格发生怎样的变化时会买进看涨期权(B )A.下降B.上升C.不变D.视情况而定10.当融资缺口为正时,敏感比率(A)A.大于1B.小于1C.等于1D.不确定1. 根据《巴塞尔协议》具体实施要求,国际大银行的资本对风险资产比率应达到(C ) 以上。

A. 1.2 5 % B. 4% C . 8% D. 50%2. 如某银行在2月7日(星期四)至13日(星期三)期间的非交易性存款平均余额为50 000万元,按照8%的存款准备金率,问该行在2月21日到27日这一周中应保持的准备金平均余额为多少万元。

(A)A.4000 B. 50000 C . 46000 D. 20003.某商业银行总资产1000万元,负债800万元,其财务杠杆比例是(B )。

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( )1. ---What _____ useful program it is!---Yeah. It tells us how to play ______ violin.A. an; /B. an; theC. the; aD. a; the( )2 Mr. Han is _____ teacher. He teaches _____ math.A. our;usB. our; ourC. ours; usD. us; us( )3. I ______ follow you. Would you please repeat it?A. can’tB. mustn’tC. needn’tD. shouldn’t( )4. They______TV in the evening. They do their homework.A are watchingB can't watchingC don't watchD don't watching( )5. ---How do you go to school everyday? ---I go to school ______ .A. on taxiB. by subwayC. take a taxiD. on the subway ( )6. My sister ____ home at 5:00 every day.A. getsB. gets toC. getD. get to( )7. There are _____ people shopping in the new supermarket, because it is on sale.A. four hundredsB. four hundred ofC. hundred ofD. hundreds of ( )8. I don’t know _____ . Can you tell me?A. where he livesB. where does he liveC. he lives whereD. does he live where( )9. ---_____ is it from Zunyi to Guiyang. Hope we can arrive in 2 hours.---About 150 kilometers.A.How soonB. How longC. How farD. How about ( ) 10. ----Excuse me, I left my book at home. May I borrow ______, please?-----Sure, no problem. Here you are.A. YouB. YoursC.YourD. their( )1. There are ______ rules in my house.A. too manyB. much tooC. too muchD. many too ( )2. ---______ I finish my homework now?---No. you _____ . Your work is over today.A. Can’t; mustB. Must; don’t have toC. May; couldn’tD. Couldn’t; could( )3. ---What are you listening to?---A song by Huo Zun. It _____ beautiful.A. tastesB. soundsC. looksD. smells ( )4. --- Do you know there are many different ______ animals in the zoo?---Yes, I do. And I also know that some of them are _____ scaring. A. kinds of; kind of B. kinds of; kinds ofC. kind of; kinds ofD. kind of; kind of() 5. He often _________ supper at 6:00 in the evening.A. haveB.is havingC. hasD. is eating ( )6. ---Hello, may I speak to Jane? ---_______A. Who are you?B. What’s wrong?C. This is Jane speaking.D. She’s Jane.( )7. Look! Li Lei is _____.A. runningB. ranC. to runD. run( ) 8. ---How’s it going? ---_________.A. Long time no seeB. I’m drawing a pictureC. It’s going to rainD. Pretty good( ) 9. ---What’s the weather like in your hometown? ---_______A. Yes, I like it.B. It’s warm in winter.C. Why not?D. Yes, very much.( )10. She doesn’t like pop music, _____ ?A.does sheB. is sheC. doesn’t sheD. isn’t she( )1. Alice is a beautiful girl _____ big eyes and dark hair.A. inB. onC. atD. with( )2. ---Is there _____ beef in the fridge? ---No, there isn’t. There is _____ pork.A. some; anyB. any; anyC. some; someD. any; some ( )3. ---How many girls are there in your class?---________ them ______ over twenty.A. A number of; areB. The number of; areC. The number of; isD. A number of; is( )4. Andrew usually has fruit _____ dinner.A. ofB. forC. atD. with( )5. Jim’s school trip was very _________ and he had a great time.A. interestingB. terribleC. difficultD. boring( )6. It’s too cold. Let’s make a fire ____ us warm.A. keepB. keepsC. to keepD. keeping ( ) 7. She didn’t _________ her homework last night because she was ill.A. didB. doC. doesD. doesn’t do( )8. Mr. Read on the bike is ___________ build.A. mediumB. of mediumC. from mediumD. a little( ) 9. ---__________? --- He has big eyes and a small nose.A. What does he look likeB. What does he doC. How old is heD. How is he( ) 10. She _____medium height and ______ short hair.A. is; is ofB. has; is ofC. has; has ofD.is of; has( ) 1. _____ cold the weather is!A. What aB. How aC. HowD. What ()2. “___________ your mother __________ (cook)?”“Yes, she is.”A. Is, cookingB. Does, cookC. Is, cookD. Does, cooking ()3 He often _________ supper at 6:00 in the evening.A. h aveB. hasC. is havingD. is eating()4. ---When is Jay’s concert?---It’s _____ three o’clock ______ the afternoon of July 18th.A. at; inB. at; onC. on; inD. in; on ( ) 5. Now many animals are _____ danger. We must protect them.A. atB. onC. out ofD. in( )6. Did you _________ at the party last night?A. sing and danceB. sing and dancedC. sang and dancedD. singing and dancing( )7. Tom was very angry with his sister, so he ______ her.A. shoutedB. shouted toC. shouted withD. shouted at ( ) 8. The post office is across from the bank, next _______a restaurant.A. to b. from C. and D. of( ) 9. ---- Excuse me, is there a school near here?---- Yes, there _____. It’s on the Center Street.A. areB. isC. wasD. Were( ) 10. Mr. Han has a ______ son.A. 3 year oldB. 3-years-oldC. 3-year-oldD. 3 years old( )1.It’s ___________ outside. Let’s make a snowman later.A.rainingB. snowingC. cloudyD. Windy( ) 2. People usually _________ sweaters in the winter.A.wearingB. wearsC. wearD. Wore( ) 3. __________ there a hospital near here?A.AreB. IsC. WasD. Were( ) 4. The supermarket is behind the bank. So the bank is ______ the supermarket.A.in front ofB. across fromC. onD. next to ( ) 5. There aren’t ______ flowers in the garden.A.someB. aC. muchD. any( ) 6. -----Is there any meat in the egg soup?----- _________________. There are only tomatoes and eggs.A.Yes, there is.B. No, there isn’t.C. Yes, it is.D. No, it isn’t. ( ) 7. Before blowing out the candles, the birthday person must _____ a wish.A.cutB. takeC. makeD. Do( ) 8. His class was very ____________ and all of us were interesting in it.A. interestingB. boringC. difficultD. Fast( ) 9. ----_________ did you go last summer vocation?---- I went to visit the Great Wall in Beijing.A.HowB. WhenC. WhatD. Where( ) 10.The book is _________ difficult _______ I can’t finish reading it.A. so, thatB. such, thatC. too, toD. very, that。

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