综合作业题1
数控编程技术作业综合题目及答案(1)
第2章数控编程中的工艺分析五、综合题2、根据图2.2、图2.3所示零件的技术要求，分别填写零件的数控加工工艺卡片。
图2.3 典型铣削零件第3章数控编程中的数学处理三、计算题1、计算图3.1、图3.2所示零件的各基点坐标，并将结果填入表中。
图3.1 基点坐标计算1图3.2 基点坐标计算22、加工图3.3所示零件轮廓，材料毛坯尺为80×63×6mm，工件坐标系设定在零件的左下角，按图中所给条件，计算出X3、X4、X5和Y1、Y5的坐标值，若采用直径为8mm的立铣刀进行轮廓加工，计算刀位点轨迹各基点的坐标值。
R 34解:Y1=19×tan30°=10.97X3=(57-45)×tan40°=10.069X4=X5-(57-22-34×sin45°)=54.08X5=75-(34-34×sin45°)=65.042图3.3 典型轮廓铣削零件第5章常用准备功能指令的编程方法SS五、编程题1、根据图5.1所示零件的轮廓尺寸，分别在G90、G91方式，用G00、G01指令按刀具轨迹（虚线为快速移动轨迹）写出加工程序，并填入程序单中。
2、仔细阅读下列程序，根据程序单，在图5.2的坐标网格中画出刀具运行的轨迹和零件轮廓。
图5.2 坐标网格3、根据图5.3所示零件的轮廓尺寸，在G90方式，用G00、G01、G02/G03指令按刀具轨迹（虚线为快速移动轨迹）写出加工程序，并填入程序单中。
若用91方式编程，程序需做那些改动。
图5.3 试题3的零件轮廓4指令写出刀具运行轨迹的NC 程序，填入程序清单。
图5.4 题4的零件轮廓第6章 刀具补偿指令及其编程方法五、编程题1、刀具起点在（－40，0），法向切入（－20，0）点，切一个40 mm 的整圆工件，并法向切出返回点（－40，0），刀具轨迹如图1所示。
利用刀具半径补偿指令，编写零件的轮廓加工程序。
综合英语[一]第一次作业答案解析
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综合英语[⼀]第⼀次作业答案解析综合英语（⼀）第⼀次作业题⽬113.—“May I speak to your manager Mr. Williams at five o’clock tonight?”—“I’m sorry. Mr. Williams _______ to a conference long before then.”选择⼀项：a. had goneb. has gonec. will have goned. would have gone题⽬221. There's been a whole ________ of accidents on this roa选择⼀项：a. varietyb. seriesc. consequenced. set题⽬317.Beer is the most popular drink among male drinkers, _______ overall consumption is significantly higher than that of women.选择⼀项：a. thatb. whosec. whatd. which题⽬422. Doctors predicted that the baby would not survive with such ____ disabilities. 选择⼀项：a. severeb. strictc. slightd. mild题⽬53. —— My brother Jerry was promoted PR manager last month. —— _________.b. Good for youc. Oh, pleased. Ok, if you like题⽬616.Not until the game had begun _______ at the sports groun选择⼀项：a. would he have arrivedb. did he arrivec. should he have arrivedd. had he arrived题⽬715.______________ she realized it was too late to go home.选择⼀项：a. Scarcely had it grown dark thanb. No sooner it grew dark thanc. It was not until dark thatd. Hardly did it grow dark that题⽬840. A kind teacher always takes a very ____ attitude when correcting students’ mistakes.a. potentialb. partialc. negatived. positive题⽬929. They ____ a great deal in those difficult days.选择⼀项：a. soughtb. sufferedc. struckd. stuck题⽬1011. By the time he arrives in Beijing, we __________ here for tow days.选择⼀项：c. have been stayingd. will have stayed题⽬1132. The meeting was ______ to take place on Tuesday, but we've had to postpone it. 选择⼀项：a. imaginedb. assumedc. supposedd. guessed题⽬1224. Do you have anything ________ to this material but cheaper?a. familiarb. similarc. samed. alike题⽬1333. Global warming threatens the ____ of the whole human race.选择⼀项：a. survivalb. statusc. superiorityd. summit题⽬1435. The thought of seeing her again was all that ____ him.选择⼀项：a. maintainedb. obtainedc. retainedd. sustained题⽬1530. This summer, there is _____ rain for the crops to grow.选择⼀项：a. efficientb. potential19.Living in the western part of the country has its problems, _______ obtainingfresh water is not the least.选择⼀项：a. for whichb. of whichc. whichd. with which题⽬1710. ——Great party, isn't it?——_________选择⼀项：a. My friends are great.b. Yeah, really.c. Glad to meet you again.d. Have we met before?题⽬1812.She ought to stop work; she has a headache because she _____________ too long. 选择⼀项：a. readb. is readingc. had readd. has been reading题⽬194. ——Excuse me, where is the headmaster’s office? —— __________.选择⼀项：a. Pardon? Why ask me?b. Oh, you must know our headmasterc. Sorry I’m stranger here.d. You ask the wrong person题⽬2028. _____ while the iron is hot.选择⼀项：a. Beatb. Stick7. ——Nice to see you again, Mr. Smith. How are you?——_________选择⼀项：a. Fine. Thank you. And you?b. I miss you.c. This way, please.d. Are you OK?题⽬226. ——Can I ask you a few questions?——_________选择⼀项：a. It's a good ideb. Certainly.c. No, thanks.d. What do you do?题⽬2314.Although Anne is happy with her success she wonders _____________ will happen to her private life.选择⼀项：a. thisb. thatc. whatd. it1. —— Hello, may I talk to the headmaster now?—— ____________.选择⼀项：a. I don’t knowb. Sorry, he is busy at the momentc. Sorry, you can’td. No, you can’t题⽬2534. He has ____ Jimmy of lying for some time.选择⼀项：a. supposedb. suspectedc. sustained31. A ______ meeting of OPEC leaders was called to find a solution to the oil crisis. 选择⼀项：a. peakb. superiorityc. crownd. summit题⽬2736. Always ______ your computer when you've finishe选择⼀项：a. take offb. switch offc. put offd. send off8. ——Hello, I'd like to speak to Mark, please.——_____________________ 选择⼀项：a. It's me here.b. Yes, I'm Markc. This is me.d. This is Mark speaking.题⽬2938. The next tax law will affect everyone, but ___ those highly-paid.选择⼀项：a. uniquelyb. unusuallyc. particularlyd. specially题⽬3039. There’s no ____ in arguing with him—he won’t change his min选择⼀项：a. pointb. usec. spotd. end题⽬3127. The way a person is dressed may express his _____ or social position. 选择⼀项：c. statusd. post20. There are signs _______ restaurants are becoming more popular with families. 选择⼀项：a. whoseb. in whichc. whichd. that题⽬335. —— Good morning. Can I help you, sir? —— __________.选择⼀项：a. Sorry, you can’tb. No, I don’t need helpc. Yes, I want to buy some orangesd. Oh, that’s all right题⽬3425. The professor gave us a ______ example of alcohol's effect on the body.选择⼀项：a. sensitiveb. slightc. specificd. sensible题⽬359. ——May I have three tickets, please?——______________选择⼀项：a. It may have begun already.b. I'm sorry we've sold out.c. Please come tomorrow.d. You are too early.18.The professor could hardly find sufficient grounds _______ his arguments in favour of the new theory.选择⼀项：a. to base onb. to be based onc. on which to base23. Don't wash that sweater in the machine—it'll______.选择⼀项：a. condenseb. shrinkc. contractd. compress题⽬3826. His trousers _____ when he tried to jump over the wall.选择⼀项：a. splitb. burstc. crackedd. broke题⽬392. —— Henry, this is my sister-in-law, Jane. —— ___________.选择⼀项：a. Nice to meet youb. Your sister-in-law is so pretty!c. Nice to have talked to youd. Who is Jane?37. Tian’an Men is the _____ of Chin 选择⼀项：a. signb. sympathyc. symbold. signal。
一年级数学下册认识图形综合作业
认识图形综合作业（1）一、填一填。
1、长方形有（）条边，正方形有（）条边，三角形有（）边。
2、用（）根小棒可以摆一个长方形；用（）根小棒可以摆一个三角形。
3、硬币是（）形；红领巾是（）形；课桌面是（）形。
4、长方形相对的边（）；（）形四条边一样；平行四边形相对的边（）。
二、连线。
梯形三角形圆平行四边形正方形长方形三、算一算。
1、填方框。
□+7=16 15-□=5 8+□=14□-10=4 10+□=15 10-□=72、在○里填上“>”“<”或“=”。
5+9○14 9○18-10 7+8○1610-8○7 12○3+8 9+6○153、算一算。
8+7= 12-12= 6+10= 12+4=7+5= 2+8= 7+0= 8-3=19-9= 16-4= 2+7= 6+9=11-10= 9-0= 0+0= 9+9=识图形综合作业（2）一、我会判断。
1、两个一样大的正方形可以拼成一个长方形。
（）3、长方形就是正方形。
（）2、两个三角形可以拼成一个四边形。
（）二、填一填。
1、11个位上是（），表示（）个（）；十位上也是（），表示（）个（）。
2、由7个一和1个十合起来的数是（），读作（）。
3、最小的两位数是（），最大的一位数是（）。
它们的差是（）。
4、和19相邻的两个数是（）和（）；12在11的（）面。
5、我们排队，我的前面有6人，后面有7人，我们这一排一共有（）人。
6、（）点整时，时针和分针重合；（）点整时，时针和分针成一条直线。
7、18里面有（）个十和（）个一。
三、计算。
1、算一算。
3+6+4= 19-3-5= 17-7+3=6+7-2= 9-6+8= 7+3-8=2、列式算一算。
①一个加数是6，另一个加数是7，②减数是8，被减数昌9，差是多少？和是多少？□○□=□□○□=□四、解决问题。
1、我养了8条小金鱼，我养的和你同样多。
他们一共养了多少条小金鱼？□○□=□（条）答：一共养了（）条小金鱼。
八年级上册数学综合作业1
八年级上册数学综合作业1一．选择题（共5小题）1．图1所示的是一把木工台锯时使用的六角尺，它能提供常用的几种测量角度．在图2的六角尺示意图中，x的值为（）A．135B．120C．112.5D．1122．如图，在四边形ABCD中，∠B＝90°，BC＝3，连接AC，AC⊥CD，垂足为C，并且∠ACB＝∠D，点E是AD边上一动点，则CE的最小值是（）A．1.5B．3C．3.5D．43．如图，在△ABC中，边AB，AC的垂直平分线交于点P，连结BP，CP，若∠A＝50°，则∠BPC＝（）A．50°B．100°C．130°D．150°4．多项式77x2﹣13x﹣30可因式分解成（7x+a）（bx+6），其中a，b均为整数，则a+b等于（）A．6B．14C．16D．215．若关于x的分式方程有正数解，且关于x的一元一次不等式组有解，则所有满足条件的整数a的值之和是（）A．9B．6C．11D．14二．填空题（共5小题）6．一个多边形的内角和比四边形的内角和多720°，并且这个多形的各内角都相等，则这个多边形的每个外角等于度．7．如图，在△ABC中，∠BAC和∠ABC的平分线AE、BF相交于点O，AE交BC于点E，BF交AC于点F，过点O作OD⊥BC于点D，则下列三个结论：①∠AOB＝90°+∠C；②当AB+BC+CA＝2b时，AF+BE＝AB；③若OD＝a，则AB+BC+CA＝2b，则AB+BC+CA＝2b．其中正确的是．8．如图，在Rt△ABC中，∠ABC＝90°，AB＝5，BC＝12，AD是∠BAC的平分线，若M、N分别是AD和AB上的动点，则BM+MN的最小值是．9．若x+m与x2+2x﹣1的乘积中不含x的二次项，则实数m的值为．10．若关于x的方程﹣＝0无解，则m的值是．三．解答题（共2小题）11．A，B两地之间的国道的长度为180千米．（1）甲、乙两人均要从A地前往B地．乙乘公交车先走了20千米，甲才开车从A地出发，甲出发40分钟后刚好追上乙．已知甲开车的速度是乙所乘公交车速度的1.5倍，求乙所乘公交车的速度；（2）高速公路修通后，高速公路的全长比原来国道长减少了40千米，某长途汽车在高速公路上的行驶速度比在国道上提高了35千米/时，从A地到B地的行驶时间缩短了一半，求该长途汽车在原来国道上行驶的速度．12．如图，△ABC为等腰三角形，AB＝BC，点F是线段CB上一点，连接AF．（1）如图1，若AF⊥CB，AB＝10，BF＝8，求线段AC的长；（2）如图2，E为线段AB上一点，连接CE，使∠ACE＝∠B，且EA＝BF，D为AF的中点，连接CD，求证：∠ACD＝∠BCE．。
青书学堂大学英语(二)(专升本)综合作业1试题与答案
综合作业11. (单选题) ( )—Good-bye and thank you very much for a wonderful time.—_____. Hope to see you again.(本题1.5分)A、Thank youB、NotC、It was nothingD、Never mind学生答案： A标准答案：A解析：得分： 1.52. (单选题) ( )—Could you show me your passport?—_____.(本题1.5分)A、Yes, I couldB、SureC、I haven’t it with meD、I don’t want to学生答案： B解析：得分： 1.53. (单选题) ( )—Would you mind if I turned the radio up?—_____.(本题1.5分)A、Yes, pleaseB、No, go aheadC、No, thank youD、Yes, that’ll be right学生答案： B标准答案：B解析：得分： 1.54. (单选题) ( )—We are going to London for holiday next week. Would you mind taking care of my garden while we’re away?—Not at all. _____.(本题1.5分)A、Sorry, I have no timeB、 I’d rather notC、With pleasureD、No, I wouldn’t标准答案：C解析：得分： 1.55. (单选题) ( )—Please help yourself to the fish.—_____.(本题1.5分)A、Thanks, but I don’t like fishB、Sorry, I can’t helpC、Well, fish don’t suit forD、No, I can’t学生答案： A标准答案：A解析：得分： 1.56. (单选题) ( )—Would you like to have dinner with me this Saturday, Mr. Wang?—_____.(本题1.5分)A、Oh, no. Let’s notB、I’d rather stay at homeC、I’d love to, but I have a meeting that dayD、Thank you标准答案：C解析：得分： 1.57. (单选题) （）—Excuse me, is there a park here？—_____.—Thank you all the same.(本题1.5分)A、 I don’t want to tell youB、 Yes, there isC、No, there isn’tD、Sorry, I don’t know学生答案： D标准答案：D解析：得分： 1.58. (单选题) ( )—Mike, I am going to skate in the mountains tomorrow.—Oh, really? _____.(本题1.5分)A、Good luckB、Thank you。
大学英语综合作业第一学期试题答案
1. ( 单选题 ) — Thank you for your nice gift.— ____________________(本题2.0分)A、I’m glad you like it.B、No, thanks.C、It’s very kind of you.D、I’m sorry to hear that.标准答案：A2.( 单选题 ) Her manner of speaking was to the _________of elegance.(本题2.0分)A、wayB、pointC、shapeD、rank标准答案：B3. ( 单选题 ) ________—I’m 20.(本题2.0分)A、How are you?B、How old are you?C、Where are you from?D、May I have your name?标准答案：B4.( 单选题 ) — Your name again, please. ________.—It's Bell Green.(本题2.0分)A、I didn't quite catch youB、I couldn't quite catch youC、I don't hear youD、It's your name标准答案：A5.( 单选题 ) Knowing something as a whole is far from knowing all its _____.(本题2.0分)A、instanceB、characterC、itemsD、details标准答案：B6. ( 单选题 ) By local doctors and nurses, we hope more people. ( )(本题2.0分)A、train, helpB、training, helpingC、training, to helpD、train, helping标准答案：C7.( 单选题 ) With user-______ computer, people with little education can also learn how to use it.(本题2.0分)A、friendB、friendlyC、friendlinessD、friendship标准答案：B8.( 单选题 ) What really made me decide to buy the house was the beautiful ________ through the window.(本题2.0分)A、visionB、lookC、pictureD、view标准答案：B9.( 单选题 ) –What’s the news?–________________(本题2.0分)A、I don’t know.B、The president is going to visit the town tomorrow.C、Yes, it is interesting.D、It doesn't matter.标准答案：B10.( 单选题 ) –I wonder if you can come over tonight.–________________.(本题2.0分)A、I’d love to, but I am busy tonightB、No, you can’tC、Yes, but I am busyD、I don’t know标准答案：A11.( 单选题 ) — How is everything going?— _______________(本题2.0分)A、Everything is finished.B、Everything has been done.C、Not doing wrong, you know.D、Not so bad, you know.标准答案：D12.( 单选题 ) He took a taxi to the airport in a hurry ______ find that he forgot the ticket at home.(本题2.0分)A、toB、in order toC、only toD、as to标准答案：C13.( 单选题 ) The classroom is ________ on Saturday night.(本题2.0分)A、availableB、useC、usefulD、empty标准答案：A14.( 单选题 ) –It’s great that you got into such a good university.–________(本题2.0分)A、Oh, that’s nothing.B、Don’t mention it.C、I hadI had a large dose of good luck.D、It’s my pleasure.标准答案：C15.( 单选题 ) Many foreign tourists prefer to cut a check to _____ _ travel expenses.(本题2.0分)A、giveB、coverC、takeD、clean标准答案：B16.( 单选题 ) The Prime Minister says the research project is _________ of consideration.(本题2.0分)A、worthB、worthyC、worthwhileD、worthless标准答案：B17.( 单选题 ) The government is trying to do something to ____________ better understanding between the two countries.(本题2.0分)A、raiseB、enlargeC、heightenD、promote标准答案：D18.( 单选题 ) I didn't know what to do but then an idea suddenly _____ me.(本题2.0分)A、happened toB、happened uponC、occurred toD、occurred upon标准答案：C19.( 单选题 ) A wise mother never ______ her children to the slightest possibility of danger.(本题2.0分)A、exposesB、makesC、sendsD、lets标准答案：A20.( 单选题 ) A sore throat and running nose are __________ of getting cold.(本题2.0分)A、signsB、symptomsC、symbolsD、signals标准答案：A21.( 单选题 ) There has been a sudden drop in retail sales, _________?(本题2.0分)A、does itB、hasn’t thereC、has thereD、doesn’t there标准答案：B22.( 单选题 ) —Do you want to have a message?—No, thanks. I_________ in half an hour.(本题2.0分)A、will call againB、can callC、may phone himD、would call标准答案：A23.( 单选题 ) Flying across the ocean and far into the space has mainly brought people________.( )(本题2.0分)A、 service, convenience and informationB、fun, enjoyment and experienceC、nearer to the far-away planetsD、nearer to the moon and mars ion.标准答案：A24.( 单选题 ) – Could you show me the way to the nearest supermarket?–______________(本题2.0分)A、Sure. It’s just cross the street.B、That’s right.C、Don’t ask that.D、I forgot it.标准答案：A25.( 单选题 ) A pilot should be responsible ________ the safety of all the passengers on board.(本题2.0分)A、againstB、atC、forD、with标准答案：C26.( 单选题 ) —Can I use your tape recorder for a while?—Yes,_____________.(本题2.0分)A、go aheadB、you can't broke itC、all rightD、no, sorry标准答案：A27.( 单选题 ) All his energies are ____________ upon the job and he seems to have little time for his family.(本题2.0分)A、aimedB、guidedC、focusedD、directed标准答案：C28.( 单选题 ) —I will call you before I go. Well, I’ve got to run.— ____________________________(本题2.0分)A、I’m pleased to meet you.B、Yes, you can leave if you like.C、Oh, no, you can’t.D、All right. Hope to see you soon.标准答案：D29. ( 单选题 ) The old man should be treated with . ( )(本题2.0分)A、kindB、kindnessC、kindlyD、kinder标准答案：B30. ( 单选题 ) I hope we _______the documents ready before you come tomorrow.(本题2.0分)A、will getB、getC、have getD、will have got标准答案：D31. (阅读理解题)完形填空Good children must be good students at school. They should work hard at all subjects and do what is given to them __(16)__ time. They should develop the ability to care __(17)__ themselves, to try not to depend too much__(18)__ their parents, to think independently and to work in a planned way. They ought to respect teachers, have a cooperative attitude__(19)__schoolmates and always be ready to help others.At home, good children should be tidy and hard-working. Besides schoolwork they should help their parents with housework and be always ready to show respect and gratitude to their parents whenever their parents do something for them. They should also be very __(20)__ towards their entire family. They__(21)__to please their family with something that __(22)__ them happy and feel good instead of upsetting them with their personal worries. When it is absolutely necessary to talk to their parents about their personal problems, they should talk nicely and calmly,__(23)__ready to take advice from their parents since they are much more __(24)__ in life. If any disagreement occurs, good children should try to iron out (调停) the disagreement by listening to the parents' opinions. They never take it __(25)__granted that they are always in the right. On the contrary, good children learn quickly by listening to others.(1). ( 单选题 )(本题1.5分)A、forB、 onC、withinD、by标准答案：B(2). ( 单选题 ) (本题1.5分)A、afterB、byC、forD、on标准答案：C(3). ( 单选题 ) (本题1.5分)A、onB、byC、 inD、at标准答案：A(4). ( 单选题 ) (本题1.5分)A、forB、withC、atD、towards标准答案：D(5). ( 单选题 ) (本题1.5分)A、considerableB、considerateC、considerD、consideration标准答案：B(6). ( 单选题 )(本题1.5分)A、shouldB、mustC、oughtD、may标准答案：C(7). ( 单选题 )(本题1.5分)A、makeB、madeC、makesD、to make标准答案：C(8). ( 单选题 ) 23. (本题1.0分)A、getingB、to getC、 gotD、getting标准答案：D(9). ( 单选题 ) (本题1.0分)A、experienceB、to experienceC、experiencedD、experiencing标准答案：C(10). ( 单选题 ) (本题1.0分)A、asB、forC、inD、 with标准答案：B32. (阅读理解题)（一）I’ve loved my mother’s desk since I was just tall enough to see above the top of it as mother sat doing letters. Standing by her chair, looking at the ink bottle, pens, and white paper, I decided that the act of writing must be the more wonderful thing in the world. Years later, during her final illness, mother kept different things for my sister and brother. “But the desk,” she’d said again, “it’s for Elizabeth.” I never saw her angry, never saw her cry.I knew she loved me; she showed it in action. But as a young girl, I wanted heart-to-heart talks between mother and daughter. They never happened. And a gulf opened between us. I was “too emotional(易动感情的)”. But she lived“on the surface(表面)”.As years passed I had my own family. I loved my mother and thanked her for our happy family.I wrote to her in careful words and asked her to let me know in any way she chose that she did forgive(原谅) me.I posted the letter and waited for her answer. None came.My hope turned to disappointment(失望), then little interest and, finally, peace— it seemed that nothing happened. I couldn’t be sure that the letter had even got to mother. I only knew that I had written it, and I could stop trying to make her into someone she was not.Now the present of her desk told, as she’d never been able to, that she was pleased that writing was my chosen work. I cleaned the desk carefully and found some papers inside —a photo of my father and a one-page letter, folded(折叠) and refolded many times. Give me an answer, my letter asks, in any way you choose. Mother, you always chose the act that speaks louder than words.(1). ( 单选题 ) The writer began to love her mother’s desk ______. (本题3.0分)A、after Mother diedB、before she became a writerC、when she was a childD、when Mother gave it to her标准答案：C(2). ( 单选题 ) The passage shows that ______. (本题3.0分)A、mother was cold on the surface but kind in her heart to her daughterB、mother was too serious about everything her daughter had doneC、mother cared much about her daughter in wordsD、mother wrote to her daughter in careful words标准答案：A(3). ( 单选题 ) The word “gulf” in the passage means ______.(本题2.5分)A、deep understanding between the old and the youngB、different ideas between the mother and the daughterC、free talks between mother and daughterD、part of the sea going far in land标准答案：B(4).( 单选题) What did mother do with her daughter’s letter asking forgiveness?(本题2.5分)A、She had never received the letter.B、For years, she often talked about the letter.C、She didn’t forgive her daughter at all in all her life.D、She read the letter again and again till she died.标准答案：D(5). ( 单选题 ) What’s the best title of the passage?(本题2.5分)A、My letter to MotherB、Mother and ChildrenC、My mother’s DeskD、Talks between Mother and Me标准答案：C33. (阅读理解题)AStudying abroad is an amazing experience, especially when you come to Australia as an overseas high school student. You can have a lot of fun here, especially on holidays. There are many festivals in Australia. The most important one is obviously Christmas. Each year, the summer holiday of every high school lasts about two months from the beginning of December to February, which covers the Christmas time. Since it is a long holiday, most overseas students love to fly back to their home countries to spend the time with their families and friends, but a few students still stay in Australia during the holiday to get part-time jobs. It is quite easy to find a part-time job at Christmas. Students often take part in another major social activity. They go to the beach to have fun in the sunshine. The summer in Australia is from December to February, so going to the beach in December is very popular among Australian. Easter in March is another important holiday in the year. It actually combines (使联合) "Good Friday"and "Easter Monday". Almost every shop closes on Good Friday. And people usually go to see Easter Show. The Chinese New year is not a public holiday in Australia, so every Chinese student still has to go to school to study and do his or her normal duties.(1). ( 单选题 )Summer holidays in Australia often begin in ______.(本题3.0分)A、SeptemberB、FebruaryC、 JulyD、December标准答案：D(2). ( 单选题 ) In Australia, you can spend Christmas ______.(本题2.5分)A、in JanuaryB、 in MarchC、in summerD、in winter标准答案：C(3). ( 单选题 ) Overseas students ______ in their summer holidays.(本题2.5分)A、go to the beach to find part-time jobsB、can do part-time jobsC、continue to study at schoolD、must do their normal duties标准答案：B(4). ( 单选题 ) Probably people seldom ______ on Good Friday in Australia.(本题2.5分)A、go to see Easter ShowB、spend the time with their friendsC、have funD、go shopping标准答案：D(5). ( 单选题 ) Students in Australia go to school ______.(本题2.5分)A、in the Chinese New YearB、at EasterC、at ChristmasD、on Easter Monday标准答案：A。
2022-2023学年苏科版七年级数学上册阶段性(1-1-2-8)综合作业题(附答案)
2022-2023学年苏科版七年级数学上册阶段性（1.1-2.8）综合作业题（附答案）一．选择题（共30分）1．的相反数是（）A．B．C．D．2．下列说法中错误的有（）①绝对值是它本身的数有两个，它们是0和1；②一个数的绝对值必为正数；③1的相反数的绝对值是1；④任何数的绝对值都不是负数．A．1个B．2个C．3个D．4个3．下列计算结果是72的是（）A．﹣9÷（﹣3）2B．（﹣9）2÷（﹣32）C．﹣（﹣2）3×（﹣3）2D．﹣（﹣22）×（﹣3）34．1月14日，长沙市的气温﹣5℃～﹣1℃，那么这天的温差（最高气温减最低气温，单位℃）是（）A．6B．4C．﹣4D．﹣65．下列式子可读作“负10、负6、正3、负7的和”的是（）A．﹣10+（﹣6）+（+3）﹣（﹣7）B．﹣10﹣6+3﹣7C．﹣10﹣（﹣6）﹣3﹣（﹣7）D．﹣10﹣（﹣6）﹣（﹣3）﹣（﹣7）6．下列各组运算结果符号不为负的有（）A．（+）+（﹣）B．（）﹣（）C．﹣4×0D．2×（﹣3）7．下列四个说法：①0到原点的距离为0；②0没有倒数；③0没有相反数；④0没有绝对值．其中正确的个数（）A．0B．1C．2D．38．下列各数中，数值相等的有（）①32和23；②﹣23与（﹣2）3；③23与（﹣2）3；④﹣22与（﹣2）2；⑤﹣（﹣3）与﹣|﹣3|；⑥与；⑦（﹣1）2021与﹣1；⑧﹣（﹣0.1）3与﹣0.001A．1组B．2组C．3组D．4组9．根据如图所示的程序计算，若输入x的值为1，则输出y的值为（）A．5B．﹣13C．﹣3D．310．观察图中三角形三个顶点所标的数字规律，可知数2021应标在（）A．第673个三角形的左下角B．第674个三角形的右下角C．第674个三角形的正上方D．第674个正方形的左下角二．填空题（共24分）11．某公交车上原有10个人，经过三个站点时乘客上下车情况如下（上车为正，下车为负）：（+2，﹣3），（+8，﹣5），（+1，﹣6），则此时车上的人数为．12．根据相关机构测算，未来15年，5G将为全球带来22000000个就业机会，将22000000用科学记数法表示为．13．比较大小：﹣﹣（填“＞”或“＜”）14．绝对值大于1.5并且小于3的整数之和是．15．计算：|﹣3|﹣5＝．16．|a|+（b+1）2＝0，则﹣4×a×b＝．17．按规律填写适当的数：2，﹣4，8．﹣16，，…18．如图是用围棋子摆成的一列具有一定规律的“山“字，仔细观察并找出规律：按照这种方式摆下去，则第n个“山”用枚围棋子．三．解答题（共66分）19．计算（1）﹣165+265﹣78﹣22+65；（2）；（3）；（4）32÷（﹣2）3+（﹣2）3×﹣22．20．把代表下列各数的序号填在相应的横线上．①；②﹣0.86；③π；④0；⑤﹣；⑥﹣；⑦2.7；⑧1.1010010001……（每两个1之间依次多一个0）属于正有理数的有：；属于整数的有：；属于负分数的有：；属于无理数的有：．21．画出数轴用数轴上的点表示下列各数，并用“＜”把它们连接起来．1，，022．某自行车厂一周计划生产1400辆自行车，平均每天生产200辆，由于各种原因实际每天生产量与计划量相比有出入，下表是某周的生产情况（超产为正，减产为负）；星期一二三四五六日增减+5﹣2﹣4+13﹣10+6﹣9（1）根据记录可知前三天共生产辆；（2）产量最多的一天比产量最少的一天多生产辆；（3）该厂实行计件工资制，每辆车60元，超额完成任务每辆奖15元，少生产一辆扣15元，那么该厂工人这一周的工资总额是多少？23．现规定一种运算“*”，对于a、b两数有：a*b＝（a+b）（a﹣b），试计算（﹣3）*2的值．24．如果a，b互为相反数，c，d互为倒数，x的绝对值是1，y是数轴负半轴上到原点的距离为1的数，求代数式﹣cd+y2021的值．25．如图，点A、B在数轴上表示的数分别为﹣12和8，两只蚂蚁M、N分别从A、B两点同时匀速出发，同向而行时间/秒015A点位置﹣12﹣9B点位置818（1）请填写表格；（2）若两只蚂蚁在数轴上点P相遇，求点P在数轴上表示的数；（3）若运动t秒钟时，两只蚂蚁的距离为10，求出t的值．26．已知数轴上顺次有A、B、C三点，分别表示数a、b、c，并且满足|b|＝|c|＝5，b＜c，点A在点B的左边且与点B距离8个单位长度．一只电子小蜗牛从A点向正方向移动，速度为3个单位/秒．（1）请求出A、B、C三点分别表示的数；（2）运动多少秒时，小蜗牛到点B的距离为2个单位长度？（3）设点P在数轴上点A的右边，且点P分别到点A、点B、点C的距离之和是20，那么点P所表示的数是多少？参考答案一．选择题（共30分）1．解：根据相反数的定义，的相反数是﹣．故选：D．2．解：①绝对值是它本身的数是非负数，故①说法错误；②一个数的绝对值必为非负数，故②说法错误；③1的相反数的绝对值是1，故③说法正确；④任何数的绝对值都不是负数，故④说法正确．所以说法中错误的有2个．故选：B．3．解：A、﹣9÷9＝﹣1，故本选项错误；B、81÷9＝9，故本选项错误；C、8×9＝72，故本选项正确；D、﹣4×9＝﹣36，故本选项错误．故选：C．4．解：（﹣1）﹣（﹣5）＝﹣1+5＝4（℃）．故选：B．5．解：可读作“负10、负6、正3、负7的和”的是﹣10﹣6+3﹣7．故选：B．6．解：A、原式＝﹣（﹣）＝﹣，不符合题意；B、原式＝﹣+＝﹣，不符合题意；C、原式＝0，符合题意；D、原式＝﹣6，不符合题意，故选：C．7．解：A、由数轴的定义可知0到原点的距离是0，正确；B、由倒数数的定义可知0没有倒数，正确；C、由相反数的定义可知0有相反数数，错误；D、由绝对值的定义可知0的绝对值还是0，错误．所以有2个正确．故选：C．8．解：∵32＝9，23＝8；﹣23＝﹣8，（﹣2）3＝﹣8；23＝8，（﹣2）3＝﹣8﹣22＝﹣4，（﹣2）2＝4；﹣（﹣3）＝3，﹣|﹣3|＝﹣3；＝≠；（﹣1）2021＝﹣1；﹣（﹣0.1）3＝0.001≠﹣0.001．∴①中两数的数值不相等；②中两数的数值相等；③中两数的数值不相等；④中两数的数值不相等；⑤中两数的数值不相等；⑥中两数的数值不相等；⑦中两数的数值相等；⑧中两数的数值不相等．∴数值相等的有②⑦共2组故选：B．9．解：依据题中的计算程序列出算式：y＝12﹣4＝﹣3；∵﹣3＜0，∴应该按照计算程序继续计算，（﹣3）2﹣4＝5，∴y＝5＞0．故选：A．10．解：每个三角形有三个角，三个数的顺序是上、左下、右下．∵2021÷3＝673…2，∴2021这个数在第674个三角形的正上方顶点处．故选：C．二．填空题（共24分）11．解：10+2﹣3+8﹣5+1﹣6＝10+2+8+1﹣3﹣5﹣6＝7（个），故答案为：7．12．解：22000000＝2.2×107．故答案为：2.2×107．13．解：|﹣|＝，|﹣|＝，∵＜，∴﹣＞﹣．故答案为：＞．14．解：∵绝对值大于1.5并且小于3的整数的绝对值等于2，∴绝对值大于1.5并且小于3的整数是﹣2，2，∴绝对值大于1.5并且小于3的整数之和是0．故答案为：0．15．解：原式＝3﹣5＝﹣2故答案为：﹣2．16．解：∵|a|+（b+1）2＝0，|a|≥0，（b+1）2≥0，∴a﹣＝0，b+1＝0，解得a＝，b＝﹣1，∴﹣4×a×b＝﹣4××（﹣1）＝2．故答案为：2．17．解：∵一列数为：2，﹣4，8．﹣16，…，∴这列数第n个数为（﹣1）n+1•2n，∴当n＝5时，这个数为：（﹣1）5+1•25＝32，故答案为：32．18．解：图①中围棋子的个数为：1+2×3＝7，图②中围棋子的个数为：1+3×3+1×2＝12，图③中围棋子的个数为：1+4×3+2×2＝17，图④中围棋子的个数为：1+5×3+3×2＝22，…，则第n个“山”所用的围棋子个数为：1+（n+1）×3+（n﹣1）×2＝1+3n+3+2n﹣2＝5n+2，故答案为：5n+2．三．解答题（共66分）19．解：（1）﹣165+265﹣78﹣22+65＝（﹣165+265）﹣（78+22）+65＝100﹣100+65＝65；（2）＝﹣×××3＝﹣1；（3）＝×（﹣）﹣×（﹣）﹣×（﹣）＝﹣2+1+＝﹣；（4）32÷（﹣2）3+（﹣2）3×﹣22＝9÷（﹣8）﹣8×﹣4＝﹣1+6﹣4＝．20．解：属于正有理数的有：①⑦，属于整数的有：④，属于负分数的有：②⑤，属于无理数的有：③⑥⑧．故答案为：①⑦；④；②⑤；③⑥⑧．21．解：如图：﹣5＜﹣4＜﹣2.5＜0＜1．22．解：（1）200×3+5﹣2﹣4＝599（辆）；故答案为：599辆．（2）13﹣（﹣10）＝23（辆）；故答案为：23辆．（3）5﹣2﹣4+13﹣10+6﹣9＝﹣1（辆），（1400﹣1）×60+（﹣1）×15＝83925（元）．答：该厂工人这一周的工资总额是83925元．23．解：根据题中的新定义得：原式＝（﹣3+2）×（﹣3﹣2）＝﹣1×（﹣5）＝5．24．解：根据题意得：a+b＝0，cd＝1，x＝±1，y＝﹣1，∴﹣cd+y2021＝0+1﹣1+（﹣1）＝﹣1．25．解：（1）根据两只蚂蚁行驶的时间和路程，可以求出速度，再根据行驶时间计算出路程，进而填写表格，（2）设相遇时间为x秒，由题意得，3x﹣2x＝8﹣（﹣12），解得：x＝20，20×3﹣12＝48答：点P在数轴上表示的数为48．（3）设运动时间为t秒，①在相遇之前距离为10时，有3t+10﹣2t＝8﹣（﹣12），解得t＝10秒，②在相遇之后距离为10时，有3t﹣10﹣2t＝8﹣（﹣12），解得t＝30秒，答：当两只蚂蚁的距离为10，两只蚂蚁行驶的时间为10秒和30秒．26．解：（1）∵|b|＝|c|＝5，b＜c，∴b＝﹣5，c＝5，又∵点A在点B的左边且与点B距离8个单位长度，∴a＝﹣5﹣8＝﹣13，即A、B、C三点分别表示的数为﹣13，﹣5，5；（2）当小蜗牛运动到点B前，与点B相距2个单位长度时，设运动时间为x秒，∵AB的距离为|﹣13﹣（﹣5）|＝8，∴3x+2＝8，解得：x＝2；当小蜗牛运动到点B后，与点B相距2个单位长度时，设运动时间为y秒，依题意得：3y＝8+2，解得：，综上所述：经过2秒或秒时，小蜗牛到点B的距离为2个单位长度；（3）设点P表示数为z，∵AC的距离是|﹣13﹣5|＝18，BC的距离为|5﹣（﹣5）|＝10，∴点P只能在AC之间，不可能在点C的右边，又∵|P A|+|PB|+|PC|＝20，|P A|+|PC|＝|AB|+|BC|＝18，∴|PB|＝2，∴|z﹣（﹣5）|＝2，解得：z＝﹣7或z＝﹣3，即点P所表示的数是﹣7或﹣3．。
一轮复习人教A版专题二不等式专题综合作业
专题综合检测一、单项选择题1.(2022石家庄二中月考,9)下列命题为真命题的是( )A.若a>b>0,则ac2>bc2B.若a>b,则a2>b2C.若a<b<0,则a2<ab<b2D.若a<b<0,则1a >1b答案D2.(2022辽宁丹东五校联考,9)设1a <1b<0,则( )A.a2>b2B.ab>b2C.a+b≥2√abD.2a+2b>2√2a·2b 答案D3.(2022河北曲阳一中月考,4)已知函数f(x)=log2x2·log2x8,若f(x1)=f(x2)(其中x1≠x2),则1 x1+9x2的最小值为( )A.34B.32答案B4.(2022石家庄二中月考,6)若正数x,y满足x+3y=5xy,当3x+4y取得最小值时,x+4y的值为( )答案B5.(2022重庆涪陵实验中学期中,6)已知x>0,y>-1,且4x +1y+1=3,则x+y的最小值为( )答案C二、多项选择题6.(2022广州执信中学月考,11)设a,b∈R,则下列结论正确的是( )A.若a<b<0,则(a-1)2<(b-1)2B.若a+b=2,则2a+2b≥4C.若2a-2b>2-a-2-b,则a>bD.若a>b>0,且a+b=1,则a b>b a答案BCD7.(2022辽宁六校协作体期中,10)下列说法正确的是( )A.当xÎ(0,1)时,x√1−x2≤122x+2sin2x的最小值为2√2C.x 2x4+2≤√24D.若a>1,b>12,则2√(log2a)·[log2(2b)]1+log2(ab)≤1答案ACD8.(2022辽宁省部分中学期末,11)三元均值不等式:“当a、b、c均为正实数时,a+b+c3≥√abc3,即三个正数的算术平均数不小于它们的几何平均数,当且仅当a=b=c时等号成立.”利用上面结论,判断下列不等式成立的有( )A.若x>0,则x2+2x≥3B.若0<x<1,则x2(1-x)≤19C.若x>0,则2x+1x2≥3D.若0<x<1,则x(1-x)2≤19答案AC三、填空题9.(2022重庆七中期中,13)正数a,b满足1a +9b=1,若不等式a+b≥m对任意实数m恒成立,则实数m的最大值是.答案1610.(2022沈阳三十一中月考,15)已知a>b,关于x的不等式ax2+2x+b≥0对于一切实数x恒成立,又存在实数x0,使得a x02+2x0+b=0成立,则a 2+b2a−b的最小值为.答案2√211.(2022广东深圳实验学校月考,14)已知log2(a+4b)=2log2(2√ab),则a+b的最小值是.答案9412.(2022广东阳春一中月考,16)已知不等式ax2+bx+c<0的解集为{x|2<x<3},则b c =,b+c+25a+2的最小值为.答案-56813.(2022河北曲阳一中月考,14)已知a,b∈R,且a>b2>0,则a2+1(2a−b)b的最小值是. 答案2。
河北省唐山市丰润区2021-2022学年一年级下学期期末综合性作业语文试题含答案
2022-2023学年河北省唐山市丰润区一年级（下）期末语文试卷一、基础积累与运用。
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棉花shìqing检查yǎn jing事情cháo shī眼睛wēn nuǎn潮湿yǒng gǎn温暖mián huā勇敢jiǎn chá4．给加点的字选择正确的读音，用“√”标出。
有空．（kōng kòng）天空．（kōng kòng）快乐．（yuèlè）音乐．（yuèlè）种．（zhǒng zhòng）子种．（zhǒng zhòng）地5．按原文填空。
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（1）夜来声，花落知。
（2）举头望，头思乡。
（3）莺歌对燕舞，对。
（4）小荷才露，早有蜻蜓上头。
6．看拼音，写词语。
guówáng huǒbàn zhāo huzuǒyòu fēi cháng gāo xìng7．《小猴子下山》中，小猴子扔了（），去追兔子。
A．玉米B．桃子C．西瓜8．《动物王国开大会》中，老虎让（）把开会的消息通知大家。
A．狐狸B．狗熊C．大灰狼D．梅花鹿9．《夏夜多美》中，（）把小蚂蚁送回了家。
A．睡莲B．蜻蜓C．微风10．从《要下雨了》中，我们知道，燕子在下雨前，小鱼下雨前，蚂蚁下雨前。
①在搬东西②飞得很低③游到水面上二、阅读。
11．阅读短文，回答问题。
荷叶圆圆的，绿绿的。
小水珠说：“荷叶是我的摇篮。
”小水珠躺在荷叶上，眨着亮晶晶的眼睛。
《生产与作业管理》第一阶段综合练习题
【生产与作业管理】第一阶段综合练习题【生产与作业管理】综合练习题〔一〕一、单项选择题1．用户购置产品的第一需要是〔 D 〕P3A．数量B．交货期C．价格D．质量2．以下属于生产与作业系统结构化要素的是〔 A 〕P5A．生产技术B．库存控制C．人员组织D．质量管理3．在市场经济体制下，企业管理的核心是进行经营决策、制定经营方针和确定〔 B 〕P12A．经营方案 B．经营目标C．经营方案D．经营方法4．企业战略的构成要素包括经营范围、竞争优势、协同作用和〔 A 〕P22A．增长向量B．经营战略C．职能范围D．市场优势5．生产与作业战略中，属于组织与管理方面战略决策的是〔D 〕P26-27A．管理人员的选择B．车间内部布置C．管理监督形式 D．组织形式6．在产品加工过程中，变换加工对象时，如果设备调整的工作量大，适宜采用〔 C 〕P47A．平行移动方式B．横向移动方式C．顺序移动方式D．纵向移动方式7．从一个工作地承当的工序数目来看，大量生产的工序数目(m1)与单件生产的工序数目(m2)之间的关系为〔 D 〕P41A．m1≥m2B．m1>m2C．m1≤m2D．m1<m28．与流程式生产相比，加工装配式生产〔 C 〕P40A．产品品种数较少B．在制品库存较低C．产品品种数较多D．副产品较多9．大型水轮发电机的生产与作业类型属于〔 B 〕P39A．补充存货生产类型B．订货生产类型C．连续生产类型D．备货生产类型10．假设某产品的工时定额为5分钟／件，那么其产量定额为〔 A 〕P114 A．12件／小时B．14件／小时C．16件／小时D．20件／小时11．在生产与作业方案体系中，产品方案处于〔 C 〕P119A．短期方案层B．中期方案层C．长期方案层D．近期方案层12．以适时适量生产为核心的生产方式是〔 B 〕P163A．敏捷制造B．准时生产C．备货型生产D．流程式生产13．以下属于综合生产方案主要指标的是产品的〔 D 〕P120A．本钱指标B．利润指标C．销售额指标D．质量指标14．在生产间隔期固定的情况下，产品生产批量与平均日产量的关系是〔 B 〕P139 A．正比关系B．反比关系C．非线性关系D．不相关关系15．物料需求方案的根本原理主要来自〔 C 〕P150A．独立需求B．替代需求C．相关需求D．互补需求16．产品产量指标是指企业在一定时期内生产并符合产品质量要求的实物〔 A 〕P120-121A．数量B．品种C．价值D．本钱17．精益生产方式结构体系的三大支撑是零库存、多品种和〔 B 〕P137A．零本钱B．零缺陷C．多工种D．多批次18．在箭线式网络图中，某结点的最早开始时间取决于该结点各紧前活动的〔C 〕P194?A．最早开始时间中的最小值B．最迟结束时间中的最小值C．最早开始时间中的最大值D．最迟结束时间中的最大值19．设备维护保养等级的划分依据是维护保养的工作量大小和〔 D 〕P269A．本钱B．时间C．人员D．难易程度20．在生产控制与其他活动的关联图中，起中心作用的是〔 C 〕P174A．订货订单B．物料采购C．生产方案D．会计核算21．生产调度组织的总原那么是〔 B 〕P182A．统一领导、统一管理B．统一领导、分级管理C．分级领导、统一管理D．分级领导、分级管理22．工程管理目前已开展为三维管理。
2024年秋江苏开放大学生活中的经济学060057综合作业一
2024年秋江苏开放大学生活中的经济学060057综合作业一试题列表单选题题型：单选题客观题分值2分难度：简单得分：21消费者预期房子的价格将来会上升，则对房子当前的需求会A增加B减少C不变D不能确定学生答案：A老师点评：题型：单选题客观题分值2分难度：一般得分：22如果其它各种条件均保持不变，当猪肉的价格上升时，对鸡肉的需求A增加B减少C不变D无法确定学生答案：A老师点评：题型：单选题客观题分值2分难度：一般得分：2 3建筑工人工资提高将使A新房子供给曲线左移并使房子价格上升B新房子供给曲线右移并使房子价格下降C新房子需求曲线左移并使房子价格下降D新房子需求曲线右移并使房子价格上升学生答案：A老师点评：题型：单选题客观题分值2分难度：一般得分：2 4当其它生产要素不变，而劳动投入不断增加时A总产量会一直增加B总产量会一直减少C总产量会先增加后减少D总产量会先减少后增加学生答案：C老师点评：题型：单选题客观题分值2分难度：中等得分：2 5经济学上所说的稀缺性是指A资源的相对有限性B欲望的无限性C资源的绝对稀缺性D欲望的相对有限性学生答案：A老师点评：题型：单选题客观题分值2分难度：一般得分：2 6产出与生产要素之间的关系称之为A收益函数B消费函数C成本函数D生产函数学生答案：D老师点评：题型：单选题客观题分值2分难度：中等得分：2 7在微观经济学中，厂商生产的主要动机是A获得最大收益B获得最大利润C获得最大产量D获得最高价格学生答案：B老师点评：题型：单选题客观题分值2分难度：较难得分：28下列说法中错误的一种说法是A只要边际产量减少，总产量也一定减少B只要总产量减少，边际产量一定是负数C边际产量曲线一定在平均产量曲线的最高点与之相交D只要平均产量增加，边际产量就大于平均产量学生答案：A老师点评：题型：单选题客观题分值2分难度：一般得分：29汽车和汽油是互补关系，汽油涨价，若其它条件不变，则汽车的需求量A增加B减少C不变D难以确定学生答案：B老师点评：题型：单选题客观题分值2分难度：一般得分：210均衡价格是（）。
应用概率统计综合作业一
《应用概率统计》综合作业一一、填空题（每小题2分，共20分） 1．已知随机事件A 的概率5.0）（=A P ，事件B 的概率6.0）（=B P ，条件概率8.0）｜（=A B P ，则事件B A 的概率=）（B AP ．2．设在三次独立试验中，随机事件A 在每次试验中出现的概率为31，则A 至少出现一次的概率为 19/27 ． 3．设随机事件A ，B 及其和事件B A的概率分别是，和，则积事件B A 的概率=）（B A P ．4．一批产品共有10个正品和两个次品，任意抽取两次，每次抽一个，抽出后不再放回，则第二次抽出的是次品的概率为 1/5 ．5．设10件产品中有4件不合格品，从中任取2件，已知所取2件产品中有一件是不合格品，则另1件也是不合格品的概率为 ． 6．设随机变量）,3（～2σN X ，且3.0)53(=<<X P ，则=<)1(X P ．7．设随机变量X 绝对值不大于1，且81)1-(==X P ，41)1(==X P ，则=<<)11-(X P 7/16 ．8．设随机变量X 的密度函数为⎩⎨⎧<<=，其他，010，x 2)(f x x 以Y 表示对X 的三次独立重复观察中事件⎭⎬⎫⎩⎨⎧≤21X出现的次数，则{}2=Y P 9/64 ． 9．设随机变量X 的概率分布为2.0)1(==X P ，3.0)2(==X P ，5.0)3(==X P ，则随机变量X 的分布函数=)(x F f （x ）= （x=1)（x=2) （x=3)0 (x 不为1、2、3之中的任一个） ．10．设随机变量X 的密度函数为)1(1)(f2x x +=π，求随机变量31X-=Y 的密度函数=)y (Y f 3/π[1+(1?y )3]. ．二、选择题（每小题2分，共20分）1．同时抛掷3枚均匀对称的硬币，则恰有2枚正面向上的概率为（ D ） （A ） （B ） （C ） （D ）2．某人独立地投入三次篮球，每次投中的概率为，则其最可能失败（没投中）的次数为（ A ） （A ）2 （B ）2或3 （C ）3 （D ）13．当随机事件A 与B 同时发生时，事件C 必发生，则下列各式中正确的是（B ） （A ）1)()()(-+≤B P A P C P （B ）1)()()(-+≥B P A P C P （C ）)()(AB P C P = （D ）)()(B A P C P =4．设1)(0<<A P ，1)(0<<B P ，1)|()|(=+B A P B A P ，则（B ）（A ）事件A 和B 互不相容 （B ）事件A 和B 互相对立 （C ）事件A 和B 互不独立 （D ）事件A 和B 相互独立 5．设A 与B 是两个随机事件，且1)(0<<A P ，0)(>B P ，)|()|(A B P A B P =，则必有（ C ） （A ）)|()|(B A P B A P = （B ）)|()|(B A P B A P ≠（C ）)()()(B P A P AB P = （D ）)()()(B P A P AB P ≠6．设随机变量X 的密度函数为)(fx ，且)(f )(f x x =-，)(F x 为X 的分布函数，则对任意实数a ，有（B ） （A ）dx x f a⎰-=0)(1)-a (F （B ）dx x f a⎰-=0)(21)-a (F （C ）)a (F )-a (F= （D ）1)a (F 2)-a (F -= 7．设随机变量X 服从正态分布）,（2σμN ，则随着σ的增大，概率{}σμ<-XP为（ C ）（A ）单调增大 （B ）单调减少 （C ）保持不变 （D ）增减不定8．设两个随机变量X 和Y 分别服从正态分布）4,（2μN 和）5,（2μN ，记{}41-≤=μX P P ，{}52+≥=μX P P ，则（ A ）（A ）对任意实数μ，都有21P P =（B ）对任意实数μ，都有21P P <（C ）只对μ的个别值，才有21P P = （D ）对任意实数μ，都有21P P >9．设随机变量X 服从正态分布）4,0（N ，则=<)1(X P （ B ） （A ）dxx e81221-⎰π（B ）dxxe41041-⎰ （C ）2121-eπ（D ）dxx e221221-∞-⎰π10．设随机变量X 的分布函数为⎪⎪⎩⎪⎪⎨⎧≤<≤<=,5,1,50,251,0x ，0)(F 2x x x x 则=<<)53(X P （ C ） （A ）254 （B ）259 （C ）2516（D ）1 三、（10分）摆地摊的某赌主拿了8个白的、8个黑的围棋子放在一个签袋里，并规定凡愿摸彩者每人交一元钱作手续费，然后一次从口袋口摸出5个棋子，中彩情况如下：摸棋子 5个白 4个白 3个白 其他彩金20元2元纪念品（价值5角） 同乐一次（无任何奖品）试计算：①获得20元彩金的概率； ②获得2元彩金的概率； ③获得纪念品的概率；④按摸彩1000次统计，赌主可望净赚多少钱？解：1.2.3.4.净赚大哟为1000-692=308元．四、（10分）已知连续型随机变量X 的密度函数为⎩⎨⎧<≥=-,0,0,0,)(22x x e Ax x f x 试求：（1）常数A ；（2）);20(，)2(<<=X P X P （3）X的分布函数。
综合英语(1)-国家开放大学电大学习网形考作业题目答案1
综合英语（1）（科目代码：01878）1.After he finished his homework, he his pen and stretched himself.A. put downB. put offC. put upD. put in正确答案：A2.He the technical skill in computer while working in the company.A.brought upB.picked upC. made upD.took up正确答案：B3.The plane at 10:45. There is still an hour to go.A.takes overB.takes offC.takes downD. takes up正确答案：B4.The student always an excuse for his being late.A.made upB.set upC.put upD.took up正确答案：A5.I've got to going now,otherwise I will miss the opening of the show.A.getB.putC.cutD.Set正确答案：D6.The research center a new plan and decided to carry it out immediately.A.came outB.put outC.worked outD.stood out正确答案：C7.On their way to school they a high wind.A.broken intoB.put ine intoD.run into正确答案：D8.We haven't got any news from you.Tell me what in the world you areA.away withB.across asC.up toD.far from正确答案：C9.When he moved to Canada,the children to the change very well.A.adjustedB.adheredC.adoptedD.Appeared正确答案：A10.The result of the experiment was quite from what I expected.A.differentB.awayC.sameD.Similar正确答案：A11.These new products will before long.A.make oute outC.set outD.take out正确答案：B12.All the children listened to his with eager attention.A.advantageB.advertisementC.advanceD.Adventures正确答案：D13.This dance is with young people all over the region.A.sameB.popularC.welcomeD.Favorite正确答案：Bnguages,English and French,are not difficult to learn for him.A.such asB.as well asC.in addition toD.in spite of正确答案：A15.He is the European for many Japanese companies.A.actorC.agentD.Waiter正确答案：C16.I hope we will a business relationship to benefit both of our companies.A.stick upB.strike upC.make upD.bring up正确答案：B17.It was really very good you to help me that heavy suitcase.A.to...forB.for...byC.of...withD.for...with正确答案：C18.There were many people outside the building,in line for the concert ticketsA.waitingB.waitedC.waitD.to wait正确答案：AGrammarChoose the best answer for each of the following items.19.That woman had some difficulties her heavy luggage.A.to carryB.carriedC.carryD.Carrying正确答案：D20.The government spent a lot of money make this land better.A.to helpB.helpingC.helpedD.help正确答案：B21.They enjoyed a ride on horseback and spent the day in the mountains.A.to takeB.tookC.takingD.take正确答案：C22.Do you still remember the Great Barrier Reef?You were so scared.A.to diveC.divingD.dive正确答案：C23.Make a list of different places you've to.A.goingB.wentC.goneD.Been正确答案：D24.When talking about the trip,he was very.A.tiring…excitedB.tired…excitingC.tiring…excitingD.tired…excited正确答案：A25.There a lot of trees around our village,but now they are all gone.ed to beinged to beC.would beD.had been正确答案：B26.I went to London business last year.A.onB.forC.byD.To正确答案：A27.—Let me help you get the books back.—A.Yes.I can get them myselfB.I’m all set.But thanks anyway.C.Really?Could you tell me why?正确答案：B28.—I hear you've been to Tokyo.—A.Yes.I've gone there many times.B.No.I enjoyed it a lot.C.Yes.I went there last month.正确答案：C29.—How long have you worked at New Wave?—A.For about5years.B.Since about5years.C.In about5years正确答案：A30.—How do you like the film on TV last night?—A.I really enjoyed it.B.Yes.I heard about itNo,I didn't go to the cinema.正确答案：A31.—Have you been to Sydney?—.A.No,I didn't go there last year.B.No,but I hope to go there sometime next year.C.No,I wouldn't go with them.正确答案：BReading Read the following passages and choose the best answer for each of the following questions.Passage 1Successful Language LearnersIf we take a close look at successful language learners we may discover a few techniques which make language learning easier for them.First of all, successful language learners are independent learners. They do not depend on books or teachers; they discover their own way to learn the language. Instead of waiting for the teacher to explain everything, they try to find the patterns and the rules for themselves. They are good guessers who look for clues and form their own conclusions.Successful language learning is active learning. Therefore, successful learners do not wait for a chance to use the language; they look for such a chance. They find people who speak the language and ask these people to collect them when they make a mistake. They will try anything to communicate. When communication is difficult, they can accept information that is inexact or incomplete. It is more important for them to learn to think in the language than to know the meaning of every word. Finally, successful language learners are learners with a purpose. They want to learn a language because they are interested in the language and the people who speak it. It is necessary for them to learn the language in order to communicate with these people and to learn from them.32.What is the purpose of this passage?A.To explain the importance of language learning.B.To teach people to speak English.C.To introduce some useful techniques of language learning.D.To compare language learning with language teaching.正确答案：C33.Which one of the following statements is true about successful language.A.They are more intelligent than others.B.They use special techniques.C.They have good teachers and good books.D.They spend much more time learning than others.正确答案：B34.According to the passage, when successful language learners meet some new words, they usually.A.pay no attention to themB.look them up in tile dictionary at onceC.ask their teachersD.try to guess their meanings正确答案：D35.Successful language learning is active,so successful learners.A.look for a chance to use the languageB.wait for a chance to use the languageC.try to avoid using the languageD.only use the language in class正确答案：A36.Successful language learners want to learn the language because.A.they have to pass the examinationB.they have interest in the languageC.they think it's very easy to learn the languageD.they want to find better jobs正确答案：B二1.He graduated from the university 10 years ago and still kept in with several classmates.A.touchB.trackC.searchD.line正确答案是：A第2题2.Please john that my house is not about to fall down.A.make sureB.sureC.ensureD.assure正确答案是：D3.I have been waiting for him for the last twenty minutes,but he hasn't yet.A.shown offB.shown upC. shown throughD.shown around正确答案是：B4. today's newspaper,we shall have cold weather next week.A.With regard toB.In spite ofC.According toD.In sight of正确答案是：C5.I was riding my bicycle along the road when a car me.A.overloadedB.overlookedC.overtookD.overheard正确答案是：C6.Some people use their superior to gain an advantage.A.ranksB.conditionsC.termsD.situations正确答案是：A7.Hold the ladder while I stand on it,or I'll fall off.A.stuckB.steadyC.smoothD.slow正确答案是：B8.Their earnings are in to their skill.A.rankB.shareC.touchD.Proportion正确答案是：D9.The standard of people's life shows that their economy is.A.sinkingB.droppingC.fallingD.declining正确答案是：D10.,more than70percent of the surface of our planet is covered by water.A.OverallB.GenerallyC.EntirelyD.Ordinarily正确答案是：A11.M y shirt has so much after washing that I can't wear it any more.B.decreasedC.shrunkD.fallen正确答案是：C12.T he old man was retired and became bored for lack of.A.proportionB.occupationC.qualificationcation正确答案是：B13.The house gives no of having been occupied.A.evidenceB.sightC.chanceD.share正确答案是：A14.The museum had several paintings the artist's early style.A.respectingB.standingC.meaningD.representing正确答案是：De your seat belt to the danger of injury in an accident.A.enlargeB.shrinkC.decreaseD.increase正确答案是：C16.The new book was the biggest cultural of the year.A.thingB.eventC.matterD.fact正确答案是：B17.My older sister has taken on the of wife and mother.A.workB.jobC.occupationD.role正确答案是：D18.You will not make a good teacher,unless you feel teaching is your.A.vocationB.vacationD.vigor正确答案是：A19.Many of the students are working to help their college tuition.A.charge forB.pay forC.bargain forD.sale for正确答案是：B20.In the countryside I had some interesting that are memorable for me.A.expressionsB.expansionC.experiencesD.expenses正确答案是：C1.They want a house,we would rather live in a flat.A.as thoughB.althoughC.asD.whereas正确答案是：C2.A number of occupations the rise are lawyers,computer analysts and psycholog ists.A.atB.onC.inD.by正确答案是：B3.We were surprised at the news that Paul was married Lucy.A.toB.byC.atD.with正确答案是：A4.Bill has much experience sales,so he has a qualification the job.A.on…forB.in…atC.in…forD.for…in正确答案是：C5.He has much experience an engineer.A.asB.atC.byD.for正确答案是：A6.The job gave me a chance with the scientists in their research.A.livingB.liveC.to liveD.lived正确答案是：C7.No agreement was reached in the discussion as neither side would give way to.A.the otherB.AnotherC.any otherD.other正确答案是：A8.I did not choose any of the offerings,because I found of them satisfactory.A.neitherB.no oneC.ratherD.none正确答案是：D9.They be sleeping because the lights are out.A.canB.mustC.shouldD.need正确答案是：B10.Ray's been in the hairstyling business20years he graduated.A.since…forB.for…sinceC.since…sinceD.for…for正确答案是：BIII.Choose A, B or C to complete each conversation.11.—Why don't you come with us?—A.Yes,I really can't go with you.B.I'd love to,but I need to go pick up the kids.C.When did you go to that restaurant?正确答案是：B12.—How did you miss your train?—A.Well,I was caught in the traffic jam.B.What's your opinion?C.Don't worry about that.正确答案是：A13.—What do you do in Seattle?—A.I did nothing but stayed at home.B.I'll visit a friend of mine.C.I'm a tour guide in a travel agency.正确答案是：C14.—Are you free this weekend?—A. No, it costs about 200 yuan.B.It shouldn't be that expensive.C.I'm not sure yet.Maybe not.正确答案是：C15.—Have you visited Hong Kong?—A.Sorry,I'm planning to go to New YorkB.No,but I've heard it's an exciting city.C.Yes,it's a long way to my hometown正确答案是：BReadingRead the following passages and choose the best answer for each of the following questions.Passage1How to Present Business CardsBusiness cards are less important in American culture than they are in Asian culture. But knowing the right way to handle business cards is a useful skill wherever you are.Requesting someone's business card is a straightforward（直截了当的、坦率的）process. You need only say: "Do you have a business card?" or "May I have your business card?"When you want to present your own card, you can say, "Here's my card. Feel free to call me if you have any other questions." Or, you might say, "Please send the information to this address. I look forward to hearing from you soon."It's not polite to directly refuse a request from someone for your business card. Instead, you can say, "Sorry, but I'm afraid I'm all out at the moment." or "l forgot to bring them with me."When you do receive a card, say "Thank you" and examine it briefly before puttingit away.16.In America,.A.one does not use business cardsB.one uses business cards everywhereC.one uses business cards but not as often as one does in AsiaD.one uses business cards much more often than one does in Asia正确答案是：C17.If you know how to handle business cards,you will.A.be absolutely successfulB.get help from othersC.make everybody happyD.find the knowledge helpful正确答案是：D18.To politely refuse a request for business cards,you may say the following except .A."Sorry,but I can't satisfy you."B."Sorry,but I'm afraid I’m all out at the moment."C."I forgot to bring them with me."D."Sorry,but I don't have a business card."正确答案是：A19.From the passage we can infer that.A.business cards are the key to successB.business cards should be beautifully designedC.you should always carry your business cardsD.handling business cards skillfully is important正确答案是：D20.The word“examine”(Line1,Para.5)is closest in meaning to.A.search forB.testC.look atD.research正确答案是：C三1.I have heard two of the accident,which are different from yours.A.versionsB.translationsC.directionsD.techniques正确答案是：A2.The young man lives in a world of and refuses the real facts.A.appearanceC.mindD.exhibit正确答案是：B3.,I like his literary works,but many people do not.A.GenerallyB.PubliclyC.PersonallyD.Considerably正确答案是：C4.There was a in the shop when a fire started.A.fantasyB.soundexcitementD.panic正确答案是：D5.Buying so big a house will a fortune.A.takeB.spendC.makeD.cost正确答案是：D6.David has a new for cooking delicious meat and fish.A.techniqueB.agentC.influenceD.experience正确答案是：A7.They waited in to hear the end of the story.A.realismB.suspenseC.dreamD.trouble正确答案是：B8.Can you provide any evidence that he was of the crime?A.typicalB.possibleC.innocentD.probable正确答案是：C9.All the people in the country have the serious accident.A.heard fromB.heard outC.heard of正确答案是：C10.Are you to do homework every day?A.supposedB.believedC.thoughtD.ought正确答案是：A11.I don't know the number–I'll look in the telephone book.A.make sureB.as sureC.of sureD.for sure正确答案是：D12.She made up her to start her own company.A.brainB.mindC.ideaD.thought正确答案是：B13.The boy will be punished if he gets into at school.A.influenceB.appearanceC.societyD.trouble正确答案是：D14.He knew he did something wrong.As he waited,his fearsA.heightenedB.raisedC.influencedbined正确答案是：A15.If you don't want to get into difficult situation,you'd better some money.A.riseB.ariseC.raiseD.steal正确答案是：C16.The story in today's newspaper is told from different points ofA.wayB.viewC.thoughtD.mind17.Though he was dressed in working clothes,I him at once.A.realizedB.spottedC.understoodD.considered正确答案是：B18.This town is for its beautiful buildings.A.famousB.unknownC.innocentD.different正确答案是：A19.What children read in books and see on TV their thinking and behaviors.binesB.raisesC.heightensD.influences正确答案是：D20.I have seen all his films,the last.A.containingbiningC.includingD.having正确答案是：CII.Structure:(1) It is better to ask him______he should refuse.A. even thoughB.ifC.in caseD. until正确答案是：A(2)He mentioned the film, the title______is memorable for all of us.A. of itB. of whichC. whichD. whose正确答案是：B(3)When______, the TV set will be immediately sent to your house.A. buyingB. to buyC. boughtD. buy(4) Not______his, they couldn't get in touch with him.A. knownB. knewC. to knowD. knowing正确答案是：D(5) I______the Picasso exhibit yet. How about you?A. didn't visitB. wasn't visitingC. hadn't visitedD. haven't visited正确答案是：C(6)I wrote down his , so that I______remember it.A. needB. had toC. mightD. must正确答案是：C(7)My friends in Boston invited me______them.A.visitingB. to visitC. visitD. visited正确答案是：B(8) Is there any good film______Channel 8 tonight?A. onB. inC. byD. for正确答案是：A(9)The film soon became known______the world.A. betweenB. amongC. duringD. throughout正确答案是：D(10)It is a wonderful show based______traditional Mexican dances.A. onB. byC. withD.at正确答案是：AIII.Choose A, B or C to complete each conversation.11.—Have a good time on your holiday！—________________________A.Thank you,and you too.B.That's all right.C.Good.Why not?正确答案是：A12.—I've always wanted to swim in that lake.—________________________A.What do you think of the coach?B.Really?Could you tell me why?C.The weather forecast says it is going to rain soon.正确答案是：B13.—I hear you've got a new house.—________________________A.No news is good news.B.Please tell me where it is.C.Yes.I just bought it last month.正确答案是：C14.—Hi,Peter!How was your tour?—________________________A.Why didn't you come with me?B.It took me a whole week.C.Oh,it was really a lot of fun.正确答案是：C15.—Let me help you open that bottle.—________________________A.Never mind.I have no idea about it.B.Thanks.I really appreciate it.C.Thank you for telling me about it正确答案是：BReadingRead the following passages and choose the best answer for each of the following questions.Passage 1MannersLearning the language of a country isn't enough. If you know the manners of your foreign friends, you will probably be surprised just how different they can be from your own.A visitor to India should remember it is impolite there to use the left hand for passing food at the table. The left hand is for washing yourself. Also in India, you mightsee a man shaking his head at another to show that he is disagreeing. But in many parts of India a side-to-side movement of the head is to show agreement. In Bulgaria you shake your head to show "yes"—a nod shows "no".In Europe it is quite usual to cross your legs while sitting and talking to someone, even at an important meeting. But doing this could cause offence to a Thailander. Touching the head of a grown-up is also not done in Thailand.Knowing about manners is useful when you are traveling, and you also need to know the language used to express the customs.16.If you are staying in India,you'd better______.A.not use your left hand to pass food at the tablee your left hand to pass food at the tableC.not use your left hand to wash yourselfe your left hand at all times正确答案是：A17.To shake your head means“Yes”______.A.in IndiaB.in EuropeC.in BulgariaD.in Thailand正确答案是：C18.You can easily make a Thailander angry by______.A.touching his headB.crossing your legs while talking to himC.shaking your headD.nodding your head正确答案是：B19.The writer thinks that to know about a country well one must______.A.know the language of the countryB.know the manners of the countryC.know the manners better than the languageD.know both the language and the manners正确答案是：D20.We can learn from the passage that______.A.different countries have different mannersB.the manners in Thailand are the same as those in IndiaC.one should be careful not to cross legs in EuropeD.one should not touch a grown-up's head in India正确答案是：A四(1)The sign X______an unknown number.A. stands forB. takes place ofC. stands byD. looks up正确答案是：A(2)He likes the picture at the first sight, though it is not______ .A.faithfulB. fluentC. fatefulD. famous正确答案是：D(3)He______with the view around as soon as he was at the top of the hill.A. fell uponB. fell in loveC. fell behindD. fell in正确答案是：B(4)The performance was so boring that some of the audience______asleep.A. hadB. tookC. fellD. got正确答案是：C(5)The dog went in the water and now it's wet______.A. all thereB. all outC. all overD. all through正确答案是：C(6)Have you______what job you are going to do?A. thought aboutB. believed inC. taken careD. considered about正确答案是：A(7)She could not______a decision about what to wear in the party.A. doB. makeC. arriveD. decide正确答案是：B(8)Perhaps this sweater will fit you if you______it a bit.A. expandB. increaseC. enlargeD.stretch正确答案是：D(9)The letters were sent to him______a big parcel.A. along withB. all alongC. after allD. all over正确答案是：A(10)My new way to solve the problem is not exactly same, but______ the one you have.A. likeB. alikeC. similar toD. same to正确答案是：C(11) This scientist has been______this problem for about ten years.A. working outB. working onC. working offD. working up正确答案是：B(12)The statue in the small town______back to 1870s.A. catchesB. getsC. returnsD. dates正确答案是：D(13)While standing in line for the football match tickets we______a conversation.A. worked upB. made upC. struck upD. picked up正确答案是：C(14)They______him stealing the public property.A. discoveredB. recoveredC. uncoveredD. covered正确答案是：A(15)We can______meat in tins so that it does not go bad.A. pressB. preserveC. presentD. pray正确答案是：B(16)The______among the two parties was blown up by the newspapers.A. controversyB. settlementC. controlD. decision正确答案是：A(17)This is a good copy of the painting. The______is in the National Gallery.A. earlierB. previousC. formerD. original正确答案是：D(18) The idea to travel by bike began to______in his mind.A. moldB. formC. makeD. build正确答案是：B(19)Have you______all the expenses of moving house?A. took outB. put outC. figured outD. turned out正确答案是：C(20) It is John who first______with the good idea of going to visit the museum.A. came acrossB. came afterC. came downD. came up正确答案是：DGrammarChoose the best answer for each of the following items.(1)It's hard to get a word out______them.A.fromB.inC.atD.of正确答案是：D(2)We don't doubt______he can do a good job of it.A.thatB.whetherC.ifD.about正确答案是：A(3)I have heard both teachers and students______well of him.A.to speakB.spokenC.to have spokenD.speak正确答案是：D(4)At first he found______what he wanted to.A.that it hard to doB.it hard to doC.hard to doD.to do it正确答案是：B(5)He moved away from his parents, and missed them enjoy the exciting life in New York.A.too much toB.enough toC.very much toD.much so as to正确答案是：A(6)He is the man______I suppose was capable of doing such a thing.A.whoB.to whomC.of themD.whom正确答案是：A(7)______might be expected,the response to the question was very mixedA.ItB.ThatC.AsD.What正确答案是：C(8)Some members of the staff couldn't handle the condition,hard______they tried.A.whenB.enough toC.very much toD.much so as to正确答案是：C(6)He is the man______I suppose was capable of doing such a thing.A.whoB.to whomC.of themD.whom正确答案是：A(7)______might be expected,the response to the question was very mixedA.ItB.ThatC.AsD.What正确答案是：C(8)Some members of the staff couldn't handle the condition,hard______they tried.A.whenB.althoughC.asD.even if正确答案是：C(9)I bought a new house last year,but I______my old house yet.A.did not sellB.have not soldC.had not soldD.do not sell正确答案是：B(10)It was not until he arrived at the station______he realized that he had forgotten hi s ticket.A.beforeB.thatC.whenD.after正确答案是：BIII.Choose A, B or C to complete each conversation.11.—I've started my own computer company.—________________________A.No kidding!Congratulations!B.If I had the money,I'd buy itC.Could you tell me who owns it?正确答案是：A12.—Do you live in Chicago now?—________________________A.Chicago is a busy and noisy city.B.Chicago is far away from here.C.Well,I'm thinking of moving here.正确答案是：C13.—Tell me,what's new with you?—________________________A.I've bought a new car.B.It's on the film channel at20:30.C.Yes,it's really interesting.正确答案是：A14.—May I give you a hand?—________________________A.How many hands do you have?B.Thank you.You are so kind.C.I don't need a lift nowadays.正确答案是：B15.—I've got2tickets for the match.Would you like to go with me?—________________________A.How about the match last night?B.The match must be exciting.C.Why not?Let's go together.正确答案是：CReadingRead the following passages and choose the best answer for each of the following questions.How man first learnt to invent words is unknown; in other words, the origin of language is a mystery. All we really know is that man, unlike animals, somehow invented certain sounds to express thoughts and feelings, actions and things, so that they could communicate with each other; and that later they agreed upon certain signs, called letters, which could be combined to stand for those sounds, and which could be written down. Those sounds, whether spoken or written in letters, we call words.The power of words, then lies in their association which the things they bring up before our minds. Words became filled with meanings for us by experience; and the longer we live, the more certain words recall to us the glad and sad events of our past; and the more we read and learn, the more the number of words that mean something to us increases.Great writers are those who not only have great thoughts but also express these thoughts in words which appeal powerfully to our minds and emotions. We should therefore learn to choose our words carefully and use them exactly, or they will make our speech silly and impolite.16.The origin of language is______.A.clearly explained in this passageB.a matter that can not be or has not been explained or understoodC.a question that was difficult to answerD.a problem already solved正确答案是：B17.One of the reasons why men invented certain sounds to express thoughts and actio ns was that they could______.A.agree with certain signsB.write them downC.make themselves understand each otherbine them正确答案是：C18.What is true about the words?A.They are used to express feeling onlyB.They can't be written downC.They are spoken or written soundsD.They are soundless signs正确答案是：C19.A great writer is one who______.A.has great thoughtsB.is good at deeply impressing us with the power of correct wordsC.is careful in choosing correct wordsE.both A and B正确答案是：D20.It is necessary to choose our words carefully when we speak or write in order____ __.A.to show that we are politeB.to show that we are good at using themC.to express exactly what we meanD.to prove that we are not silly正确答案是：C五(1)Can you tell me which place you?A.have in mindB.think overC.have out of mindD.have in the mind正确答案是：D(2)Don’t try to do everything at once; take it a bitA.at timesB.at a timeC.at other timesD.at the time正确答案是：B(3)I saw her walking in the courtyard.A.back and forthB.down and upC.in and outD.back and front正确答案是：A。
《管理学基础》作业一(参考答案)
揭阳电大管理学基础科（专科）综合作业（一）年级专业学号姓名评分一、单项选择题1．“管理就是决策”是（A）的观点。
A．西蒙 B．泰罗 C．法约尔 D．韦伯2．“凡是预则立，不预则废”，说的是（C）的重要性。
A．组织 B．预测 C．计划 D．预防3．在管理的各项职能中,最具有规范性、技术性的职能是（A）。
A．控制 B．计划 C．协调 D．领导4．人们常说，“管理是一门艺术”，强调的是（C）。
A．管理的科学性 B．管理的复杂性 C．管理的实践性 D．管理的变动性5．组织是管理的基本职能之一,它由（B）三个基本要素构成。
A．目标、原则和结构 B．目标、部门和关系C．目标、部门和效率 D．目标、部门和人员6．为了保证计划目标得以实现，就需要有控制职能，控制的实质就是使（C）。
A．实践活动具有指标约束性 B．计划接近实践活动C．实践活动符合于计划 D．计划得以严格执行7．当管理者接待来访者、参加剪彩仪式等社会活动时，他扮演的是（A）的角色。
A．精神领袖 B．发言人 C．领导者 D．组织联络者8．对于基层管理者来说，具备良好的（C）是最为重要的。
A．人际技能 B．概念技能 C．技术技能 D．管理技能9．对于高层管理者来说，掌握良好的（B）是最为重要的。
A．人际技能 B．概念技能 C．技术技能 D．管理技能10．西方早期的管理思想中，（A）是最早研究专业化和劳动分工的经济学家。
A．亚当﹒斯密 B．查尔斯﹒巴比奇C．费雷德里克﹒泰罗 D．大卫﹒李嘉图11．泰罗科学管理理论的中心问题是（C）。
A．科学技术 B．加强人的管理C．提高劳动生产率 D．增加责任感12．“经营管理理论之父”法约尔提出的五项职能或要素是（B）。
A．计划、组织、决策、协调和控制 B．计划、组织、决策、领导和控制C．计划、组织、指挥、协调和控制 D．计划、组织、激励、协调和控制13．在组织中存在着正式组织与非正式组织，二者之间的一个重大的区别就是正式组织是以（B）为重要标准。
急救护理学综合作业一
综合作业1. (单选题) 下列患者应优先处理的是:( )(本题2.0分)A、窒息B、腓骨骨折C、头皮挫伤D、尿道损伤E、轻度脑外伤学生答案：C标准答案：A解析：得分：02. (单选题) 心肺复苏时首选的给药途径是:( )(本题2.0分)A、静脉给药B、吸入给药C、骨内给药D、心内给药E、皮下注射学生答案：C标准答案：A解析：得分：03. (单选题) 防治脑水肿最常采用的脱水剂是:( )(本题2.0分)A、阿托品B、右旋糖酐C、20%甘露醇D、50%葡萄糖E、0.9%生理盐水学生答案：B标准答案：C解析：得分：04. (单选题) 关于抢救药品及设备的管理,错误的是:( )(本题2.0分)A、专人管理B、定位放置C、定期检查D、定品种数量E、外借时要登记学生答案：D标准答案：E解析：得分：05. (单选题) 胸外心脏按压最易发生的并发症是:( )(本题2.0分)A、胃破裂B、肝破裂C、胃扩张D、肋骨骨折E、锁骨骨折学生答案：C标准答案：D解析：得分：06. (单选题) 脊柱骨折的正确搬运方法是:( )(本题2.0分)A、扶持法B、抱持法C、背负法D、平抱法E、平卧式学生答案：C标准答案：E解析：得分：07. (单选题) 敌百虫中毒时洗胃液忌用:( )(本题2.0分)A、清水B、碳酸氢钠C、生理盐水D、温开水E、0.9%盐水学生答案：D标准答案：B解析：得分：08. (单选题) 对重症患者进行肾功能检测时,最直接和可靠的指标是:( )(本题2.0分)A、尿量B、血肌酐C、血尿素氮D、尿渗透压E、内生肌酐清除率学生答案：D标准答案：A解析：得分：09. (单选题) 收住在急诊科观察室的患者留观时间一般不超过:( )(本题2.0分)A、1天B、2天C、3天D、4天E、5天学生答案：C标准答案：C解析：得分：210. (单选题) 患儿4岁,进食豆粒时不慎呛咳,随即出现呼吸困难,面色发绀,神志不清。
应采取的护理措施是:( )(本题2.0分)A、给予吸氧B、人工呼吸C、将患儿平卧头偏向一侧D、立即用吸痰器清理呼吸道E、立即行环甲膜穿刺术学生答案：D标准答案：E解析：得分：011. (单选题) 123治疗药物监测常用方法不包括( )(本题2.0分)A、HPLB、酶免疫法C、PCRD、荧光偏振免疫法。
2021年全国技能大赛：现代物流综合作业赛项赛题职业技能考核：职业素养考核赛题(01)
职业素养考核 (一)一、单项选择题（本大题共40小题，每小题1分，共40分）1.职业道德中,“谨慎认真地做好本职工作，承担好本职工作应负的责任”称为（）。
A.忠诚信实B.爱岗敬业C.恪尽职守D.团结协作2.因为质量问题，T品牌汽车被厂家召回，此物流活动是（）。
A.供应物流B.生产物流C.销售物流D.回收物流3.物流运输、仓储、装卸搬运、包装、流通加工、配送、信息处理活动属于物流要素中的（）。
A.一般要素B.功能要素C.支撑要素D.物质基础要素4.“六顶思考帽”中代表情绪、直觉和情感的是（）。
A.白色思考帽B.红色思考帽C.黑色思考帽D.黄色思考帽5.相邻摆放旋转90度，一层横向放置，另一层纵向放置，层次之间交错的堆码方式是（）。
A．纵横交错式 B. 旋转交错式 C. 正反交错式 D. 重叠式6. 下列不属于．．．验收作业中可能处理的问题是（）。
A．数量方面 B. 退货方面 C. 资料方面 D. 质量方面7.按照“四号定位法”，某货物的存储编号是：3-4-5-6，其中“4”代表（）。
A．仓位顺序号 B. 货架层号 C. 库房号 D. 货架号8. 在配送作业流程中，集货作业的前一个流程是（）。
A．分货作业 B. 包装作业 C. 装车交接 D. 拣选作业9. 即时配送可满足的送货要求控制在（）。
A．90分钟内 B.60分钟内 C.45分钟内 D.30分钟内10. 下列不．属．于．包装作业中常见差异的环节是（ )。
A．装箱 B. 单证 C. 填充物 D. 点货11. 货物运输费用中由收货方承担运费的是（）。
A. 运费预付B. 协议结算C.回单付D. 运费到付12. 铁路运输中，货物运输合同的责任终止时间是（）。
A. 票据交接完毕B. 货物卸车完毕C. 运费缴交完毕D. 货物交付完毕13.安全标志分为禁止标志、警告标志、指令标志和提示标志，下图中属于警告标志的是（）。
①②③④A.①B.②C.③D.④14. 下列属于公路运输技术与装备的是（）。
现代汉语语法专题综合作业
现代汉语语法专题综合作业1. ( 单选题 ） “杂"与“闸”的区别在于发音时声母的( ）。
（本题1.0分)A 、 发音部位不同B 、 气流受阻碍的方式不同C 、 声带是否颤动D 、 气流的强弱不同标准答案：A 2。
( 单选题 ) 普通话的舌面音声母j 、q 、x 只能和（ ）韵母相拼。
(本题1。
0分）A 、 开口呼和齐齿呼B 、 齐齿呼和撮口呼C 、 齐齿呼D 、 开口呼、齐齿呼和合口呼标准答案:B 3. ( 单选题 ） 下列音节中都属于零声母音节的是( )。
（本题1。
0分)A 、 哎哟B 、 午后C 、 圆圈D 、 流水标准答案：A 4。
( 单选题 ) “小孩儿的声音很尖”表现的是语音四要素的（ ).（本题1.0分）A 、 音强B 、 音长C 、 音色D 、 音高标准答案:D 5。
（ 单选题 ） “你来瞧啊”中的“啊”应读( )。
(本题1。
0分)A 、 n ɡɑ啊B 、 w ɑ哇C 、 n ɑ哪D 、 y ɑ呀标准答案：B 6。
（ 单选题 ) “工农商学兵，本是职业的划分，为什么‘农民’永远要被加上特定的标签呢？”是疑问句中的（ ）。
（本题1.0分）A 、 是非问B 、 选择问C 、 正反问D 、 特指问标准答案：D 7。
( 单选题 ） “字"的造字法是 （ ）.（本题1.0分）A 、 象形B 、 指事C 、 会意D 、 形声标准答案:C 8. （ 单选题 ) 下列联绵词中属于双声词的是( )。
(本题1。
0分)A 、 流连B 、 混沌C 、 芙蓉D 、 嗫嚅标准答案：A 9. （ 单选题 ) “王治郅很高啊!”“有姚明高吗?"这种现象反映出词义具备的性质是（ ）。
(本题1。
0分)A、模糊性B、概括性C、民族性D、客观性标准答案：A10。
( 单选题）“革命斗争的烈火映红了安源，映红了井冈山,映红了华北,映红了全中国”，该句运用的修辞格是( )（本题1.0分）A、排比B、对比C、映衬D、层递标准答案：D11. ( 单选题）“革命斗争的烈火映红了安源,映红了井冈山，映红了华北，映红了全中国”，该句运用的修辞格是（）(本题1.0分）A、排比B、对比C、映衬D、层递学生答案：标准答案:D12。
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一、计算
1、用简便方法计算。
365-199 183+98 25×48 360÷5÷6 247-43–57 298×34 101×87 3500÷125 135×54－35×54 8×72×125 102×36 49×99＋49 900÷25 4．脱式计算。
3500-25×36 2000÷25×4 2091÷（806-789） 224÷56＋256 203×（86－16） 62×（300－135÷15） 760－480÷20×6 1386÷(112－49) 658－(928＋728)÷23 （160－48÷12）×24 342÷（86－29）×16 二、列式计算
1、305减去121与79的和，差是多少?
2、675除以25的商再加上2740，和是多少?
3、360减去25乘4的积，差是多少?
4、27个326相加的和是多少？
5、602的29倍是多少？
6、比32的17倍少56的数是多少？
7、什么数除以25，商是136？
8、一个数除以25，商是最大两位数，余数是最小的两位数，这个数是多少？
9、一个数的62倍是2356,这个数是多少？ 10、38除一个数,商27,余35,求这个数 11、48除一个数得16，这个数是多少？ 12、一个数的38倍是1560，这个数大约是多少？ 13、一个数的34倍是884，这个数是多少？ 14、18除4120与3148的差，商是多少？ 15、一个数缩小56倍得140，这个数是多少？ 三、画一画，算一算。
1、过直线外一点作已知直线的垂线和平行线。
2、已知∠1＝43° ∠2＝（ ） ∠3＝（ ）。
3. 用量角器画一个65º和
105º的角。
4. 画出平行四边形底边上的高。
5、下图中∠1=30°, ∠2=（ ）
6、过O 点画射线AB 的平行线。
再过O 点画射线AC 的垂线。
7、分成一个平行四边形和一个梯形。
8、过A 点作直线L 的垂线，过B 点作直线L 的平行线。
.A
.
B
（1）图书馆有故事书7260本，是文艺书的6倍，文艺书有多少本？
（2）农场有一块长方形的水稻田，长250米，宽80米，每公顷要施化肥120千克，这块地要施肥多少千克？ （3）育红小学有一块长方形操场，它的面积为4800平方米，宽40米，它的周长是多少？
（4）食堂运来一批煤，原计划每天烧60千克，可以烧12天；由于改进了烧煤的装置， 结果每天只烧了45千克，这批煤可以烧多少天？
（5）王平沿着60米的直道走了4次，第一次走了101步，第二次走了100步，第三次走了99步，第四次走了101步，他从家到学校走了650步，他家离学校有多远？
O A
B
●
底 底
五、解决问题。
1、
2、王叔叔骑摩托车从家到县城听农业科技讲座。
8:30出发，10:30到县城，速度是24千米/小时。
15:00返程，18:00到家，王叔叔返程的平均速度是多少？
3、我国在第24～28届奥运会上获金牌和银牌的情况如下图。
（1）我国在第24届奥运会上获得金牌、银牌各多少块？
（2）我国在哪两届奥运会上获得的金、银牌总数相同？
（3）我国在哪届奥运会上获得的金牌、银牌数相差最
大？
4、下面这块长方形绿地的宽要增加24米，长不变。
扩
大后的绿地面积是多少？
5、学校用630元钱买了15个篮球和3个足球，每个篮
球30元，每个足球多少钱？
6、下面是一种饮料的三种不同销售方式，185元钱最多
可以买多少瓶这种饮料？
1．今年植树节，向阳小学四至六年级的同学一共栽了
704棵杨树和64棵松树，栽的杨树是松树的多少倍？
2．李叔叔开货车从佛山运货到东莞用了3小时，货车的
速度是40千米/时，返回时只用了2小时，李叔叔返回
时平均每小时行多少千米？
3．新和小学组织四年级381个同学到市影剧院观看演
出。
（1）用8辆48座的客车能一次载完吗？
（2）市影剧院每排有25个座位，四年级的同学可以坐
满几排？还剩几人？（4分）
4．何老师要用900元帮学校篮球队购买12个训练用球，
飞跃体育用品店有3种不同价格的篮球，请你帮何老师
设计至少两种购买方案，并算一算每种方案剩下多少
钱？
5．下面是某校四年级男女同学参加兴趣小组人数统计
（1）请根据上表数据完成统计图。
（5分）
某校四年级男女同学参加兴趣小组人数统计图
（2）（）班参加兴趣小组的人数最多，（）班
最少。
（2分）
（3）你还能提出什么数学问题？并解答。
（2分）小强
单位：块
人数
401402 403 404 405。