比单元测试卷带答案

2024-08-15

比单元测试卷带答案(精选6篇)

比单元测试卷带答案 第1篇

(新人教)

一、选择题。(下列各题只有一个正确选项,请将它填入对应的答题栏内。每题2分,共24分)

1.2008年6月11日,抗震救灾英模事迹首场报告会在人民大会堂举行。催人泪下的先进事迹和模范人物感动了台下的每一位听众,人们泪流满面,甚至失声痛哭。这说明()

A.人的情绪是不相同的B.人的情绪是完全相同的C.人的情绪具有相通性和感染性

D.人的情绪状态不会影响他人

2.2008年9月4日,南京世茂滨江新城传出“最低7.5折售房”消息。面对此消息,欲购房者满心欢喜地前往观看、预定;已购房者则愤怒地找到相关负责人,要求退房。对此下列说法错误的是()

A.人们的情绪是多种多样的B.情绪与人们的需要是否得到满足有很大关系

C.面对同一情景,人们会有不同的情绪表现

D.上述人们的情绪都是消极的2008年9月23日,芬兰考哈约基一所职业高等学校的一名22岁的学生开枪向同学射击,造成11人死亡,多人受伤。据了解,此学生因琐事与同学发生激烈争吵,情绪失控的他便持枪向同学进行了射击。据此回答第3~4题。

3.上述材料说明()

①不良情绪会使人们冲动、消极,甚至做出一些违背道德与法律的事情

②有了不良情绪,就会走上违法犯罪的道路

③人不应该有消极的情绪

④有了不良情绪,要采取积极的措施进行调控

A.①②B.②③C.①③D.①④

4.要避免消极情绪带来的不良后果,我们就要采取措施进行调控,下列有利于消极情绪调控的方法有()

①在适当的场合大哭一场 ②提醒自己,遏制不良情绪

③采用注意力转移法调节不良情绪 ④随意发泄自己的不良情绪

A.①②③B.②③④C.①③④D.①②③④

5.“每次考试前,我都提醒自己保持良好的心态,这是我能超水平发挥的一个重要因素。”这说明()

A.只要放松,不要太认真,就会有好成绩

B.平时学习是次要的,临时发挥才是重要的C.不管功底牢不牢,考试时只要认为必胜就能取得胜利

D.良好的情绪是保证水平正常发挥,甚至超水平发挥的重要因素

6.2008年7月5日,首例“骂死人”案件审理。李周华因用极其淫秽的语言谩骂黄粱会而导致其情绪激动冠心病发作而死亡。黄梁会因情绪激动而导致冠心病发作,这告诉我们()

①人们要学会调控自己的消极情绪

②消极情绪不利于人的身心健康

③应当保持积极乐观的情绪

④要想身体健康,就要“当怒不怒,当喜不喜”,强压住不良情绪不让它泄出来

A.①②④B.①②C.②③D.①②③

7.下列对右边漫画《高考心态》评价正确的是()

A.两人面对高考有不同的心态

B.两人面对高考的心态不同,结果就不同

C.他们面对高考的心态是一样的

比单元测试卷带答案 第2篇

二、饶(富饶 ) 汤( 做汤) 膝(膝盖 ) 蔡(姓蔡 )

烧( 烧火) 肠(肠胃 ) 漆(漆黑 ) 葵(葵花 )

三、1、zhnɡ 2、sā sǎ 3、suí

四、聚津会神( 精 ) 吉详如意( 祥 ) 一生不响( 声 )

遥身一变( 摇 ) 恩将仇抱( 报 ) 区寒取暖( 驱 )

五、1、严肃 2、严格 3、严厉 4、即使……也……

5、因为……所以…… 6、不仅……而且……

六、1、她的脸红得像一个大红苹果。

2、把“和少先队员”去掉。

3、这是一次幸福的航行,一次终身难忘的航行,我怎么会忘记呢?

4、我们只有坚持锻炼身体,才能不断增强体质。

七、1、水滴石穿 2、砌墙的石头 3、关羽失荆州

4、一个愿打,一个愿挨

八、略

九、(一)1、《纪昌学射》

2、B bǎng 绞丝旁 6 绑定

3、划去“满足”“成功”

4、竟然

5、拜见 记住

6、他用一根长头发,绑住一只虱子,把它吊在窗口。然后每天站在虱子旁边,聚精会神地盯着它。那只小虱子,在纪昌的眼里一天天大起来,练到后来,大得竟然像车轮一样。

7、我体会到纪昌练习地非常刻苦,有恒心和毅力。

(二)1、滴水穿石

2、,,:“,,?!”

3、容易 坚硬 白天

4、(2)后面打“√”

5、因为大浪觉得小水珠小得可怜,九百九十九天肯定不会滴穿石头,而自己的力气大着哩,别说能把石头打个洞,就是把石头摧毁也容易!

比单元测试卷带答案 第3篇

1. --- How do you usually come to school?

---___________ the school bus.

A. By B. With C. At D. On

2. ---Do you know ____________?

A. how old is Sam B. where he lives C. where is Tom D. how far does he live

3. The students in that village need to ________ a river to school.

A. across B. through C. cross D. crossing

4. We hope our dreams can ____________.

A. come out B. come true C. come up D. come through

5. ---________ does Cindy live from her offi ce?

--- Three kilometers.

A. How long B. How much C. How often D. How far

6. It takes him about 15 minutes _________ there.

A. walk B. walking C. to walk D. walks

7. James has ________ breakfast at home and play _____ guitar every day.

A. /, the B. the, / C. the, the D. a, the

8. We want people who are good _________ children.

A. at B. for C. in D. with

9. ---_________ do people usually eat dinner?

--- In the evening.

A. What time B. When C. What D. How

10. --- Can I borrow your bike?

---______________________.

A. I don’t have one. B. No, you can’t. C. Of course. D. Not at all.

11. Can you tell me what he _________ just now?

A. talked B. told C. spoke D. said

12. ---Must I do the dishes after dinner?

--No, you ______________.

A. can’t B. needn’t C. mustn’t D. have to

13. Please get up and ___________ your clothes.

A. dress B. put up C. wear D. get dressed

14. Either you or your brother __________ singing very much.

A. likes B. like C. don’t like D. dislike

15. ---How does Jack ___________ the museum?

---By bus.

A. get B. arrive C. arrive in D. reach

16. --- How far is your home from your uncle’s?

---________________________.

A. It’s 20 kilometers far. B. It’s 20 kilometers away.

C. It’s 20 minutes bus ride D. It takes 20 minutes.

17. He wants to fi nd a _______ in a music club.

A. jobs B. work C. works D. job

18. Lucy often ____________to the bus stop.

A. rides a bike B. rides bike C. by bike D. on her bike

19. Sally goes to the park after ________ her homework.

A. doing B. do C. does D. to do

20. ---_____________________?

--- It’s wonderful.

A. What do you think of the football game? B. Do you want to go on a trip?

C. Can you play chess D. What time do you go to bed

二、完形填空。 (10分)

21. A. and B. but C. or D. so

22. A. at B. in C. on D. to

23. A. with B. by C. of D. on

24. A. go B. get C. leave D. getting

25. A. in B. at C. about D. to

26. A. in B. at C. on D. of

27. A. his B. he C. he D. she

28.A. his B. he C. our D. their

29.A. look B. read C. watch D. look at

30. A. go to bed B. goes to bed C. sleeps D. get bed

三、阅读理解 (共20小题, 每小题2分, 共计40分)

A

I have a cousin. His name is Eric. He is 15. He likes music and he can play the guitar very well. But he doesn’t want to join the music club. He wants to join the art club. He wants to learn to paint. I don’t like music or art, I like sports. I can play tennis. I can also swim but I can’t swim well. I want to join the sports club. My friends are in that club. I want to play sports with them.

31. How old is the writer’s cousin?

A. Five B. Fifteen C. Fifty D. Fourteen

32. What does Eric like?

A. music B. art C. swim D. sports

33. What club does Eric want to join?

A. music club B. art club C. sports club D. chess club

34. What does the writer dislike?

A. sports B. tennis C. swim D. music

35.Why does the writer want to join the sports club?

A. He can play tennis. B. He can swim.

C. He doesn’t like music club. D. His friends are in that club, he wants to play with them.

B

Sue and Linda usually go to school by car. They drive past a cinema, a supermarket and a food shop. The food shop is next to the supermarket. Jack and Michael usually go to school by bus. They go past a bank and a post offi ce. The bank is next to the post offi ce. Mary usually goes to work by bike. She rides a bike past a police offi ce, a library and a swimming pool.

( ) 36. How many people are there in this passage?

A. Five B. Three C. Four D. Two

( ) 37. Where is the bank?

A. It’s next to a swimming pool. B. It’s on the right.

C. It’s next to a post offi ce. D. It’s on the left.

( ) 38. How does Linda go to school?

A. By bike B. By bus. C. By car. D. On foot.

( ) 39. Where does Sue drive past?

A. A cinema. B. A post offi ce. C. A park. D. A bank.

( ) 40. What do they do?

A. They are singers. B. They are football players.

C. They are students. D. They are reporters.

C

Hi! My name is Tom. I am a school boy. My school is far from school. I must get up early in the morning. I usually go to school by bus. It takes me half an hour to get there. I have no time to have breakfast at home. I often have some bread for breakfast on the bus. I don’t want to be late for the morning exercise. I have lunch at school. Sometimes I play football with my classmates after school. I often get home at half past six.

( ) 41. Tom lives______.

A. next to his school B. in his school

C. far from his school D. with his friends

( ) 42. Where does Tom eat breakfast?

A. In the school` B. At home C. on the bus D. near the school

( ) 43. Tom gets home______.

A. at 5:30 in the afternoon B. at noon

C. with his classmates D. at 6:30P.M

( ) 44. How long does it take Tom to go to school?

A. one hour B. 5.5 hours C. Half an hour D. A morning

( ) 45.What does Tom sometimes do after school?

A. Does morning exercise. B. Plays football with his classmates.

C. Plays the guitar. D. Does his homework.

D

Alex’s day

Hello! I’m Alex. I often get up at 6:30 a.m. Half an hour later I have my breakfast. At 7:30 a.m. I take a bus to school. We have Math, Chinese and English classes from 8.00 a.m. to 11.30 a.m. I have lunch and talk with my classmates at school. We have three classes from 1:40 to 4:10 in the afternoon. After school, I often play with my classmates. We often play soccer, tennis and ping-pong. I go home at about 5:00p.m. I usually have dinner at 6:00p.m. Then I do my homework and watch TV. At about 10:30, I go to bed.

( ) 46. Alex goes to school at half past six in the morning.

47. What time does Alex eat breakfast?

_______________________________________.

48. How long does it take Alex to have breakfast?

________________________________________.

49. Where does Alex eat lunch?

_____________________________________.

50. Alex usually _______ before he goes to bed.

四、词汇 (10分)

51.There is no ___________ ( 桥梁 ) above the rive.

52. _________ the rive to school is dangerous for the students. (横过、越过)

53.What do you_______________ the school trip? (认为…怎么样)

54.The bus ride ___________me about 20 minutes every day. (花费)

55. He _________________ at seven o’clock. (刷牙)

56. Lisa is good at ______________________ ( 讲故事 ) .

57.Peter likes ___________________ ( 拉小提琴 ) .

58.He either does homework or________________ ( 散步 ) after lunch.

59.I want to be ____________________ when I grow up. (音乐家)

60. The school needs help to teach children______________ ( 游泳 ) .

五、连词成句 (10分)

61. does, you, get, how, it, long, take, to, school, to

________________________________________________?

62. is, a, river, between, there, home, her, and, hospital, the

________________________________________________.

63. far, he, live, the, how, does, library, from

________________________________________________?

64. I, take, to, the, usually, subway, park, the

________________________________________________.

65. club, want, what, to, do, you, join

________________________________________________?

66. he, play, can, the, or, drums, basketball

________________________________________________?

67. do, usually, time, get, what, you, up

________________________________________________?

68. they, bus, take, the, do, work, to

________________________________________________?

69. knows, she, it, not, is, her, for, good

________________________________________________.

70. I, clean, sometimes, an, for, my, half, hour, room

________________________________________________.

六、写作 (10分)

请根据以下信息介绍你的朋友Jim的基本情况。80词左右。

擅长打篮球, 会弹钢琴, 想加入了游泳俱乐部学习游泳。

每天早上7:00起床, 穿好衣服, 吃过早饭后7:45去上学, 下午4点放学回家。

通常花15分钟骑自行车上学, 如果下雨会乘公交车。

晚饭后或者做作业或者锻炼。

______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

(答案见本期)

单项选择

1-5 DBCBD 6-10 CADBC 11-15 DBBAD 16-20 BDAAA

完形填空

21-25ABBCB 26-30AADCA

阅读理解

31-35 BABDC 36-40 ACCAC 41-45 CCDCB

46. F 47. At 7:00 48. 30 minutes

49. At school 50. Does homework and watches TV

词汇

51.Bridge 52.Crossing 53.think of 54.takes 55.brushes teeth

56.Telling stories 57.playing the violin 58.takes a walk 59.a musician 60.to swim

连词成句

61.How long does it take you to get to school?

62.There is a river between her home and the hospital.

63.How far does he live from the library?

64.I usually take the subway to the park..

65.What club do you want to join?

66.Can he play the drums or basketball?

67.What time do you usually get up?

68.Do they take the bus to work?

69.She knows it is not good for her.

70. I sometimes clean my room for half and hour.

写作

单元测试卷——附加题 第4篇

2.已知M=12

21,β=1

7,计算M5β.

3.在直角坐标系xOy中,直线l的参数方程为

x=12t,

y=22+32t(t为参数),若以直角坐标系xOy的O点为极点,Ox为极轴,且长度单位相同,建立极坐标系,得曲线C的极坐标方程为

ρ=2cos(θ-π4).

(1)求直线l的倾斜角;

(2)若直线l与曲线C交于A,B两点,求AB.

4.已知x,y,z均为正数.求证:xyz+yzx+zxy≥1x+1y+1z.

5.已知(12+2x)n.

(1)若展开式中第5项、第6项与第7项的二项式系数成等差数列,求展开式中二项式系数最大项的系数.

(2)若展开式前三项的二项式系数和等于79,求展开式中系数最大的项.

6.已知边长为6的正方体ABCDA1B1C1D1,E,F为AD、CD上靠近D的三等分点,H为BB1上靠近B的三等分点,G是EF的中点.

(1)求A1H与平面EFH所成角的余弦值;

(2)设点P在线段GH上,且GPGH=λ,试确定λ的值,使得C1P的长度最短.

7.某次考试共有8道选择题,每道选择题有4个选项,其中只有一个是正确的;评分标准为:“每题只有一个选项是正确的,选对得5分,不选或选错得0分.”某考生每道题都给出一个答案,已确定有5道题的答案是正确的,而其余3道题中,有一道题可判断出两个选项是错误的,有一道题可以判断出一个选项是错误的,还有一道题因不了解题意而乱猜,试求该考生:

(1)得40分的概率;

(2)所得分数ξ的数学期望.

8.已知△ABC的三边长为有理数.

(1)求证:cosA是有理数;

(2)求证:对任意正整数n,cosnA是有理数.

9.对称轴为坐标轴,顶点在坐标原点的抛物线C经过两点A(a,2a)、B(4a,4a),(其中a为正常数).

(1)求抛物线C的方程;

(2)设动点T(m,0)(m>a),直线AT、BT与抛物线C的另一个交点分别为A1、B1,当m变化时,记所有直线A1B1组成的集合为M,求证:集合M中的任意两条直线都相交且交点都不在坐标轴上.

10.已知函数f(x)=(2x+1)ln(2x+1)-a(2x+1)2-x(a>0).

(1)若函数f(x)在x=0处取极值,求a的值;

(2)如图,设直线x=-12,y=-x将坐标平面分成Ⅰ、Ⅱ、Ⅲ、Ⅳ四个区域(不含边界),若函数y=f(x)的图象恰好位于其中一个区域内,判断其所在的区域并求对应的a的取值范围;

(3)比较32×43×54×…×20122011与23×34×45×…×20112012的大小,并说明理由.

11.已知an=(1+2)n(n∈N*).

(1)若an=a+b2(a,b∈Z),求证:a是奇数;

(2)求证:对于任意n∈N*,都存在正整数k,使得an=k-1+k.

12.已知函数f0(x)=sinxx(x>0),

设fn(x)是fn-1(x)的导数,n∈N*.

(1)求2f1(π2)+π2f2(π2)的值;

(2)证明:对于任意n∈N*,等式

|nfn-1(π4)+π4fn(π4)|=22都成立.

参考答案

1.解:证明:如图,连结AD.

∵AB是圆O的直径,

∴∠ADB=90°.

∴AD⊥BD.

又∵BD=DC,

∴AD是线段BC的中垂线.

∴AB=AC.

∴∠B=∠C.

又∵D,E为圆上位于AB异侧的两点,

∴∠B=∠E.

∴∠E=∠C.

2.解:矩阵M的特征多项式为

f(λ)=λ-1-2

-2λ-1=λ2-2λ-3.

令f(λ)=0,解得λ1=3,λ2=-1,从而求得它们对应的一个特征向量分别为

α1=1

1,α2=1

-1.

令β=mα1+nα2,所以求得m=4,n=-3.

M5β=M5(4α1-3α2)=4(M5α1)-3(M5α2)

=4(λ51α1)-3(λ52α2)

=4·351

1-3(-1)51

-1=975

969.

3.解:(1)设直线l的倾斜角为θ,则cosθ=12

sinθ=32,且θ∈[0,π),

∴θ=π3,即直线l的倾斜角为π3.

(2)l的直角坐标方程为y=3x+22,

ρ=2cos(θ-π4)的直角坐标方程为

(x-22)2+(y-22)2=1,

∴圆心(22,22)到直线l的距离d=64,

∴AB=102.

4.证明:因为x,y,z都为正数,

所以xyz+yzx=1z(xy+yx)≥2z.

同理,可得yzx+zxy≥2x,zxy+xyz≥2y.

将上述三个不等式两边分别相加,并除以2,

得xyz+yzx+zxy≥1x+1y+1z.

5.解:(1)∵C4n+C6n=2C5n,∴n=7或n=14.

当n=7时,展开式中二项式系数最大的项是T4和T5

T4的系数=C37(12)423=352;

T5的系数=C47(12)324=70

当n=14时展开式中二项式系数最大是项是T8,

T8的系数=C714(12)727=3432.

(2)由C0n+C1n+C2n=79,可得n=12,设Tk+1项的系数最大.

∵(12+2x)12=(12)12(1+4x)12,

∴Ck124k≥Ck-1124k-1

Ck124k≥Ck+1124k+1,∴9.4≤k≤10.4即k=10,

故展开式中系数最大的项为T11.T11=(112)12·C1012·410·x10=16896x10.

6.解:如图建系:可得E(2,0,6),F(0,2,6),H(6,6,4),A1(6,0,0).

(1)设n=(1,x,y),EF=(-2,2,0),EH=(4,6,-2),

则-2+2x=0

4+6x-2y=0n=(1,1,5),A1H=(0,6,4),

cos<n,A1H>=n·A1H|n||A1H|=262752=399,

设A1H与平面EFH所成角为θ,则cosθ=429.

(2)由题知G(1,1,6),C1(0,6,0),GH=(5,5,-2),设GP=λGH=(5λ,5λ,-2λ)

P(5λ+1,5λ+1,-2λ+6),C1P2=(5λ+1)2+(5λ-5)2+(2λ-6)2=54λ2-64λ+62,

当λ=1627时,C1P的长度取得最小值.

7.解:(1)某考生要得40分,必须全部8题做对,其余3题中,有一道做对的概率为12,有一道题目做对的概率为13,有一道做对的概率为14,所以得40分的概率为P=12·13·14=124.

(2)依题意,该考生得分的范围为{25,30,35,40}.

得25分是指做对了5题,其余3题都做错了,所以概率为P1=12·23·34=14,

得30分是指做对5题,其余3题只做对1题,所以概率为

P2=12·23·34+12·13·34+12·23·14=1124,

得35分是指做对5题,其余3题做对2题,所以概率为

P3=12·13·34+12·23·14+12·13·14=14,

得40分是指做对8题,所以概率为P4=124.

得ξ的分布列为:

ξ25303540

p14112414124

所以E(ξ)=25·14+30·1124+35·14+40·124=73024=30512.

8.证明:(1)由AB,BC,AC为有理数及余弦定理知

cosA=AB2+AC2-BC22AB·AC是有理数.

(2)用数学归纳法证明cosnA和sinA·sinnA都是有理数.

①当n=1时,由(1)知cosA是有理数,

从而有sinA·sinA=1-cos2A也是有理数.

②假设当n=k(k≥1)时,coskA和sinA·sinkA都是有理数.

当n=k+1时,由

cos(k+1)A=cosA·coskA-sinA·sinkA,

sinA·sin(k+1)A=sinA·(sinA·coskA+cosA·sinkA)

=(sinA·sinA)·coskA+(sinA·sinkA)·cosA,

由①及归纳假设,知cos(k+1)A与sinA·sin(k+1)A都是有理数.

即当n=k+1时,结论成立.

综合①②可知,对任意正整数n,cosnA是有理数.

9.解:(1)当抛物线焦点在x轴上时,设抛物线方程y2=2px,

∵4a2=2pa

16a2=8pa,∴p=2a,

∴y2=4ax

当抛物线焦点在y轴上时,设抛物线方程x2=2py

∵16a2=8pa

a2=4pa,∴方程无解,∴抛物线不存在.

(2)设A1(as2,2as)、B1(at2,2at)、T(m,0)(m>a),

∵kTA=kTA1,∴2aa-m=2asas2-m,

∴as2+(m-a)s-m=0,

∵(as+m)(s-1)=0,∴S=-ma,

∴A1(m2a,-2m),

∵kTB=kTB1,∴4a4a-m=2atat2-m,

∵2at2+(m-4a)t-2m=0,∴(2at+m)(t-2)=0,

∴t=-m2a,∴B1(m24a,-m),

∴lA1B1的直线方程为y+2m=-2m+mm2a-m24a(x-m2a),

∵直线的斜率为-4a3m在(a,+∞)单调,

∴所以集合M中的直线必定相交,

∵直线的横截距为-m22a,纵截距为-2m3在(a,+∞)单调,

∴任意两条直线都相交且交点都不在坐标轴上.

10.解:(1)f(x)=(2x+1)ln(2x+1)-a(2x+1)2-x(a>0),

f′(x)=2ln(2x+1)-4a(2x+1)+1.

∵f(x)在x=0处取极值,

∴f′(0)=-4a+1=0.

∴a=14(经检验a=14符合题意).

(2)因为函数的定义域为(-12,+∞),

且当x=0时,f(0)=-a<0.

又直线y=-x恰好通过原点,

所以函数y=f(x)的图象应位于区域Ⅳ内,

于是可得f(x)<-x,

即(2x+1)ln(2x+1)-a(2x+1)2-x<-x.

∵2x+1>0,∴a>ln(2x+1)2x+1.

令h(x)=ln(2x+1)2x+1,∴h′(x)=2-2ln(2x+1)(2x+1)2.

令h′(x)=0,得x=e-12.

∵x>-12,∴x∈(-12,e-12)时,h′(x)>0,h(x)单调递增;x∈(e-12,+∞)时,h′(x)<0,h(x)单调递减.

∴hmax(x)=h(e-12)=1e.

∴a的取值范围是(1e,+∞).

(3)由(2)知,函数h(x)=ln(2x+1)2x+1在

x∈(e-12,+∞)时单调递减,

函数p(x)=lnxx在x∈(e,+∞)时单调递减.

∴ln(x+1)x+1<lnxx,

∴xln(x+1)<(x+1)lnx.

∴ln(x+1)x<lnx(x+1),即(x+1)x<x(x+1).

∴令x=3,4,…,2011,则43<34,54<45,…,20122011<20112012,又32×43<23×34,

所以32×43×54×…×20122011<23×34×45×…×20112012.

11.证明:(1)由二项式定理,得

an=C0n+C1n2+C2n(2)2+C3n(2)3+…+Cnn(2)n,

所以a=C0n+C2n(2)2+C4n(2)4+…=1+2C2n+22C4n+…,

因为2C2n+22C4n+…为偶数,所以a是奇数.

(2)由(1)设an=(1+2)n=a+b2(a,b∈Z),

则(1-2)n=a-b2,

所以a2-2b2=(a+b2)(a-b2)=(1+2)n(1-2)n=(1-2)n.

当n为偶数时,a2=2b2+1,存在k=a2,

使得an=a+b2=a2+2b2=k+k-1,

当n为奇数时,a2=2b2-1,存在k=2b2,

使得an=a+b2=a2+2b2=k-1+k,

综上,对于任意n∈N*,都存在正整数k,

使得an=k-1+k.

12.(1)解:由已知f1(x)=f′0(x)=(sinxx)′=cosxx-sinxx2,

故f2(x)=f′1(x)=(cosxx)′-(sinxx2)′=-sinxx-2cosxx2+2sinxx3,

所以f1(π2)=-4π2,f2(π2)=-2π+16π3,

即2f1(π2)+π2f2(π2)=-1.

(2)证明:由已知得:xf0(x)=sinx,等式两边分别对x求导:f0(x)+xf′0(x)=cosx,

即f0(x)+xf1(x)=cosx=sin(x+π2),类似可得:

2f1(x)+xf2(x)=-sinx=sin(x+π),

3f2(x)+xf3(x)=-cosx=sin(x+3π2),

4f3(x)+xf4(x)=sinx=sin(x+2π).

下面用数学归纳法证明等式nfn-1(x)+xfn(x)=sin(x+nπ2)对所有的n∈Ν都成立.

(ⅰ)当n=1时,由上可知等式成立;

(ⅱ)假设当n=k时等式成立,

即kfk-1(x)+xfk(x)=sin(x+kπ2).

因为[kfk-1(x)+xfk(x)]′=kf′k-1(x)+fk(x)+xf′k(x)=(k+1)fk(x)+xfk+1(x),

[sin(x+kπ2)]′=cos(x+kπ2)(x+kπ2)′=sin[x+(k+1)π2],

所以(k+1)fk(x)+xfk+1(x)=sin[x+(k+1)π2].

因此当n=k+1时,等式成立.

综合(ⅰ),(ⅱ)可知等式nfn-1(x)+xfn(x)=sin(x+nπ2)对所有的n∈Ν都成立.

令x=π4,可得nfn-1(π4)+π4fn(π4)=sin(π4+nπ2)(n∈Ν).

四个认同测试卷带答案 第5篇

一、填空题。(每题5分,共计50分)

1、是中国共产党解决民族问题的基本原则和根本政策,是我国各项民族政策的基础。

2、新疆是祖国不可分割的一部分,是多民族聚居的地方,影

3、新疆除东南联接甘肃、青海,南部联接西藏外,从东北至西南与蒙古、、哈萨克斯坦、吉尔吉斯斯等八国接壤,边境线长 公里,是中国边境线最长、对外开放口岸最多的省区。

4、世界四大文化体系是、、、。

姓名:

响新疆社会的主要危险是

坦、、阿富汗、巴基斯坦及

5、汉代,新疆开始被称为

6、依法管理宗教事务的要旨是、、。

7、从 年开始进行“民族团结教育月”活动。2012年5月是第 个民族团结教育月。

8、中央政府重视少数民族地区的经济社会发展,从政治上看是为了。

9、所谓“三股势力”是指、、、。

10、民族团结的“五个互相”指、、、。

二、简答题(每题10分,共计50分)

1、“四个认同”指什么?

2、“四个人人” 指什么?

3、什么是民族团结?

4、当前做好新疆工作的关键是什么?

5、三山夹两盆地,是新疆最突出的地形地貌特征,三山和两盆具体指的是什么?

民族团结教育试题答案

一、填空题

1、民族区域自治制度;

2、民族分裂主义。

3、俄罗斯、塔吉克斯坦、印度; 4、5600;

5、西域;

6、保护合法、制止非法、抵御渗透、打击犯罪.;

7、1983年,30;

8、促进民族团结和繁荣;

9、民族分裂势力、宗教极端势力、暴力恐怖势力.;

10、互相信任、互相尊重、互相学习、互相帮助、互相合作。

二、简答题

1、“四个认同”内容:对祖国、中华民族、中华文化、中国特色社会主义道路的认同

2、“四个人人”指:人人讲民族团结、人人有民族团结的思想、人人懂得民族政策、人人做有利于民族团结的事。

3、民族团结是指不同民族在社会生活和交往联系中的和睦、友好和互相、联合的关系。

4、处理好发展和稳定的关系。

第一单元测试卷及答案 第6篇

二、得数分别是0、2、3、5、0、3、5、2,连线略

三、1.(1)4 2 0 (2)0 2 4

2.4 2 2 3 1

四、4 5 4 5 2 1 5 3 0 5

五、1.1 1 5>4 4<5

2.2 2 5>3 3<5

六、= >< = >= = <

七、1.4+1=5

2.4-4=0

3.3+0=3

4.5-5=0

八、3 2 0

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