高一年级寒假作业答案汇总
数学寒假作业
湖滨高级中学高一数学寒假作业(9)答案
1、1125125(5e1?3e2) 2、2? 3、3个 4、① 5、(,)或(?,?) 2131313136、10 7、120°
8、解:????(1,k)?(2,3)?(?1,k?3)
??C为RT??????0?(1,k)?(?1,k?3)?0 ??1?k2?3k?0?k?
9、?3? 2???2e1?e2?e1?3e2?e1?4e2 ?
若A,B,D三点共线,则与共线,
?设?? 即2e1?ke2??e1?4?e2 由于e1与e2不共线可得:e1??e1
e2??4?e2
故??2,k??8
10、⑴若c∥d 得k?9
5
⑵若?得k??29
14
第十三天
一、BAACB AABAA DDDBC
二、1.Introduction 2.regularly 3.harm
7.expensive 8.serious 9.scientific
第十四天
一、ADCCB ACABC AADBB
二、DACBA DCCDB ACBAD DCCBA
第十五天
一、BDABA DADAD CCDCC
二、CDCB
英语寒假作业答案 4.trust/take 5.waste 6.like 10.balannce
历史寒假作业答案
一、单项选择题(30题,共计90分)
二、判断题(5小题共15分)
31-35:B A A A B
三、材料解析题(本大题共3小题,每题15分,共45分)
36. (1)秦实行君主专制,雅典则是民主政治。(2分)主要因素是雅典贸易经济发达,小国寡民;中国是以小农经济为主要特征的自然经济。(4分)
(2)《1787年美国宪法》。(1分)权力的制约与平衡;(2分)
(3)19xx年;第一届全国人民代表大会召开。(4分)
(4)随着社会发展与进步,政治民主化是历史发展的必然趋势;民主的范围越来越广泛,民主化程度越来越高;人类各阶级、各阶段民主能相互吸收、借鉴。(2分)(以上答案任答1点即可)
(A类)37. (1)内容:主权在民;三权分立;责任内阁。(6分)
意义:第一部资产阶级性质的宪法,具有反对封建专制制度的进步意义。(3分)
(2)不同:规定新中国的性质;规定了实现民族平等的原则和方法;规定了国家经济的构成和发展方向。(4分)
(3)启示:根据时代的变化而制定和修改宪法内容;民主化进一步发展;经济建设日益成为国家工作中心;经济发展方针对经济发展的推动作用日益显著;我国在20世纪民主政治生活经历了巨大变化。(任答1点即得2分)
(B类)37. (1)鸦片战争;中国新民主主义革命的胜利。(2分)
(2)辛亥革命。(1分) 功绩:1 2 3(6分)局限:1 2 (4分)
(3)体现了以经济建设为中心;思想进一步解放;近代史研究取得进展;对外文化交流扩大;吸收外国史学研究成果。(2分,任答1条)
38.
(1)民族危机加深;号召国民抵御外侮;抨击清政府的腐败;藉以唤醒国人的民族意识。(6分,任答三点)
(2)和平共处五项原则(2分)。万隆会议。(2分)
(3)是20世纪世界外交史上的重大事件; 为国际社会以和平方式解决争端和历史遗留问题提供了新的范例;是“一国两制”理论在外交领域的成功运作,等等(4分)
(4)从被列强瓜分到收回国家主权,国际地位日益提高。(2分)
政治寒假作业答案 政治寒假作业五
2010—2011学年度第一学期高一期末答案
41.
43.(1)漫画反映了该公司存在着收入分配不公的现象(学生若答出劳动报酬在初次分配中的比重偏低亦可以)(2分)。收入分配不公会挫伤劳动者积极性,影响经济发展和社会稳定和谐。(3分)
(2)①坚持和完善按劳分配为主体、多种分配方式并存的分配制度;(如答坚持按劳分配的原则亦可得分)(2分) ②提高劳动报酬在初次分配中的比重,维护劳动者利益;(2分)
42.①希望表姐树立正确的择业观,树立竞争就业观,职业平等观。(4分)
②建议表姐先解决就业问题,等有了从业经验后再做挑选;也可建议表姐多种方式就业,积极自主创业。(2分)
(2)①要转变经营战略,面对服装出口受阻,转为积极开拓国内市场。(2分)
②要提高自主创新力,培育自己的服装品牌。(2分)
③要依靠技术进步、科学管理等手段,提高劳动生产率,降低生产成本,形成自己的竞争优势。
地理寒假作业答案
一、单选
1~5 B C B B B 6~10 B B D B C
二、判断
11.B 12.B 13.B 14.A 15 B
三. 综合题
16.
(1)略 (2) 冬至 ④ (3)0°
(4)D 从南回归线向南北两侧递减 (5)C
物理寒假作业答案
综合检测
1.B [物体的大小、形状对所研究问题的影响可以忽略不计时,可视物体为质点.如地球够大的,但地球绕太阳公转时,地球的大小就变成次要因素,我们完全可以把地球当作质点看待.当然,在研究地球的自转时,就不能把地球看成质点了.同样.准备接对手发出的旋转球时就不能把旋转的乒乓球看成质点.又如看一个同学的运动速度时,可以把人看成质点,但对他的起跑动作进行指导时,就不能看成质点.]
2.CD 3.A
4.B [小球自由下落时是一段匀加速直线运动,落入淤泥是一个匀减速的过程,落入淤泥底时速度恰好为零.]
5.AC 6.C 7.ABC 8.AB 9.AD
10.C [由μ=tan θ条件可知μmgcos θ=mgsin θ,即滑动摩擦力等于重力沿斜面向下的分力,在沿斜面向上的拉力作用下滑块匀速上滑,滑块沿斜面方向合力为零,即拉力F拉=mgsin θ+μmgcos θ=2mgsin θ当在沿斜面向下的拉力作用下滑块均速下滑时,滑块沿斜面方向合力为零,即F拉+mgsin θ=μmgcos θ,所以F拉=0.]
11.(1)中还应记下两细绳套的方向
(2)中根据F1和F2的大小及方向
(3)中用一个弹簧测力计通过细绳套拉橡皮筋,使它的结点也到O点.
2x2
3-x112.x1/2T g= 9.72±0.02 阻力 8x2T2
13.16 m/s
解析 设飞船在离地面1.6 m的速度为v,由v2=2ax得v=2ax=2×80×1.6 m/s=16 m/s.
14.(1)10 N (2)6 N
解析 (1)
取小球为研究对象,其受力分析如图.当车匀速行驶时,合力为零.
mgcos θ, FA
mg则FA==10 N, cos θ
由牛顿第三定律得,小球对绳AB的拉力为10 N.
F=tan θ,则FC=mgtan θ=6 N, mg
由牛顿第三定律得,小球对绳BC的拉力为6 N.
15.(1)0.4 (2)4.5 N
解析 (1)由题图乙可知,木块所受的滑动摩擦力
Ff=3.12 N
F3.12 N由Ff=μFN=μmg得,μ==0.4
mg0.78×10 N
(2)物体受重力mg、支持力FN、摩擦力Ff和拉力F作用.如右图所示.
将F沿水平和竖直两个方向分解.根据牛顿第二定律得
Fcos θ-Ff=ma
FN+Fsin θ=mg
又Ff=μFN
联立各式解得F=4.5 N
16.(1)1.5 m/s (2)10 N
解析
(1)
撤去外力后,小木块做匀减速直线运动从B运动到C,受力分析如右图所示,根据牛顿第二定律得
Ff+mgsin 30°=ma
FN-mgcos 30°=0
又Ff=μFN
解得:a=gsin 30°+μgcos 30°=7.5 m/s2
2由运动学公式得v2C-vB=-2ax
代入数据解得
vB=2ax=2×7.5×0.15 m/s=1.5 m/s.
(2)设外加恒力为F,受力分析如下图所示,由牛顿第二定律得
F-mgsin 30°-μFN=ma1
FN=mgcos 30°
则刚开始从A运动到B的加速度
F为a1=(gsin 30°+μgcos 30°) m
刚开始是匀加速直线运动,故有v2B=2a1x1
代入数据可求得F=10 N.
化学寒假作业答案
一、BDDBA DDCDC
二11(1)FeCl2 KCl (2)4Fe(OH)2+O2+2H2O=4Fe(OH)3
(3)Fe+SCN=Fe(SCN) 2Fe+Fe=3Fe3+-2+3+2+
12(1)钠浮在水面上融化成小球,小球迅速游动,发出“嘶嘶”声,最后消失,有红褐色沉淀生成。
(2)2Na+2H2O=2NaOH+H2↑,FeCl3+3NaOH=Fe(OH)3↓+3NaCl
第二篇:20xx年初一寒假作业答案汇总
20##年初一寒假英语作业答案
Keys:Unit 1
I. 汉译英(词组翻译)
1. write to sb. 2. match sth with sth 3. welcome to... 4. come / be from
5. live with... 6. close to 7. elder sister 8. be good at
9. make friends with sb. 10. all over the world 11. I have long hair
12. My dream is to be a ... 13. be friendly (nice, kind) to sb. 14. pay attention to
15. would like to do sth 16. on the Internet 17. be far (away) from…18. Best wishes 19. hear from sb. 20. ask sb to do sth
21. in one’s spare time 22. help sb (to) do sth.
II. 根据句子的意思,用所给单词的适当形式填空。
1. German; 2. age; 3. hobbies; 4. mountains; 5. friendly; 6. thinnest; 7. to be;
8. engineer;9. playing; 10. scientists; 11.to go; 12. running; 13. sounds; 14. yourself; 15. Japanese; Chinese; 16. travelling; 17. Germany; 18. to ride; 19. completes; 20. twice
III. 选择填空: 1-5 D B A C A 6-10 D A C B D 11-16 B C B A B A
IV. 完形填空: 1-5 A B D D B 6-10 C A C C B
V. 阅读理解: A篇--- B C D C D B篇--- B D C A D
Keys to Unit 2
I. 汉译英
1. a junior high school student
2. go… on foot
3. from…to…
4. run to the playground
5. the morning break
6. take part in
7. have a good time
8. enjoy doing sth.
9. know about
10. the school band
11. make music
12. after-school activities
13. daily life
14. ride a bicycle
15. keep a diary
16. be late for…
17. after dinner
18. between…and…
19. prepare one’s lesson
20. arrive at (小) / arrive in (大)
21. help sb. with sth.
22. in the end=at last/finally
II. 根据句子的意思,用所给单词的适当形式填空
1. are 2.daily 3.talk 4. bells 5.gives 6. guitar 7 takes 8.has
9.usually 10.cooks 11.is 12.rang 13.goes 14.practice 15.daily
16.being 17.usually 18.our 19.watching 20.do 21.learn / to learn
22.to go 23.singing 24.friends
III. 选择填空:1-5 ABAAC 6-10 BABBA
IV. 完形填空:1-5 CADBC 6-10 ABCDA
V. 阅读理解: (1) ADBDC (2)BBCAD
VI. 书面表达
One possible version:
Pleasant Goat and Force Goat are good friends. They both help Slow Goat a lot. But they aren’t the same. Pleasant Goat runs faster than other goats. He is happy and outgoing. He always has smiles on his face. Force Goat is stronger but more careless than others. He exercises every day to keep healthy, but he gets angry easily. He always disagrees with others.
Keys:Unit3
I. 汉译英(词组翻译)
1. on Earth 2. on the land 3. in the sky 4. under the water 5. put… into 6. throw… into…
7. on the beaches 8. in the sea 9. throw away 10. take a trip 11. get warm
12. turn green 13. be covered by 14. a glass of water 15. make energy
16. one quarter 17. protect the Earth 18. provide…with… 19. stop doing…
20. ask sb. to do sth.
II. 根据句子的意思,用所给单词的适当形式填空。
1. sunny 2. to have 3. kites 4. brightly 5. talking 6. Is 7. go 8. pollution
9. interesting 10. snowmen 11. interesting 12.. are 13. women
14. to have 15. funny
III. 选择填空: 1-5 B B D A B 6-10 A C B D C 11-15 C A C B D
IV. 完形填空: 1-10 A D A B C D C C B A
V. 阅读理解: A) AB D C C B) C D A C B
Keys: Unit 4
Ⅰ汉译英
- in spring 2.start to get warm 3 The wind blows gently.
- turn green 5. take a trip 6. The sun shines brightly.
7. like to go to the beach 8.in a hot weather 9.Everything changes.
- start falling from trees 11.go on a picnic 12. at this time of year
13.make snowmen 14.spend … with sb. 15.during the Spring festival
Ⅱ 用所给词的适当形式填空
1. sunny 2.to have 3.kites 4. strongly 5.talking
6. go 7.interested 8.snowmen 9.windy 10.boring
11. windy wind 12. kind to help 13.amazing to read
14. colourful funny 15.dangerous 16.problems to understand
17.gently gentle 18.sunny 19.to have 20.heavily
Ⅲ 单选:1-5 BBAAC 6-10 DBBDA
11-15 DCAAC 16-20 CCDBA
Ⅳ.完形填空 1-5 ACADD 6-10 BCBDA
Ⅴ阅读理解 1-5 CBCAD 6-10 BADCC
Ⅵ书面表达
It is important for us to protect the Earth. As students, what can we do?
First, we shouldn’t throw waste paper on the ground. Second, we should turn off the lights when we leave the room. Third, we should save water. For example, we should turn off the tap when we brush our teeth. Fourth, we can go to school on foot or by bike.
We have only one Earth. Let’s do our best to protect it!
Keys:Unit5
I.汉译英(词组翻译):
1. more than 2. one of the first students 3. leave sp.
4. leave sp. for sp. 5. do exercises 6. get to sp.
7. get there 8. in space 9. in the/a spaceship
10. float around 11. have to do sth. 12. tie… to…
13. so that 14. as many/much…as 15. that is
16. be able to do sth. 17. take photos/pictures 18. solve the problem
19. a large amount of air 20. keep diaries/keep a diary 21. get weak
22. a trip to space 23. such as 24. space hotels
25. as…as 26. on the moon
II. 根据句子的意思,用所给单词的适当形式填空:
1. be able to, 2. breathe, 3. without, 4. themselves, 5. books, 6. to get,
7. to do 8. to have 9. move/to move 10. to give 11. telling 12. machines 13. ourselves
14. important, 15. leaves 16. to finish 17. doesn’t 18. fails
III. 选择填空:
1-5 DCBCD 6-10 DCBBC 11-15 CACBB 16-20 BCCBC21-22 BD
IV. 完形填空: 1-5 ABDCA 6-10 CBCAD
V. 阅读理解: 1-5 DBCAD 6-10 BADBC
Keys to Unit6
Ⅰ. 汉译英
1.travel guide 2. walk along 3. in the centre of 4. in every direction 5. light up 6. have a good time 7. such as 8. in the north-west of 9. place of interest 10. one of 11. the Bund 12. Ocean Park 13. a traditional garden 14. natural beauty 15. across the Huangpu River 16.outside the park
Ⅱ. 1.beauty 2.sightseeing 3.to have 4. friends 5.bridges 6. places 7.take 8. beauty 9. building 10.directed 11. tourists 12. direction 13. built 14. traditional 15. beautiful 16. natural 17. Asia 18. Asian 19. traditional 20. to make 21.riding 22. Visitors 23. nature 24. watching 25. easily 26. to do 27. shopping
Ⅲ. CDDAA BACDB ADCAC CD
IV. ABDCD BCAAD
Ⅵ.ABCDD BCCBA
Keys:Unit7
I. 汉译英(词组翻译)
1. last month 2. attend the fair 3. teach you how to do sth
4. launch into the sky 5. all the way 6. of course
7. disappear into the sky 8. join the Solar Power Club
9. learn about 10. take… from … 11. can’t wait to do sth / can’t wait for sth
12. make a machine 13. use … to do … 14. all around
15. at the fair 16. It’s time for sth / It’s time to do sth.
17. listen to a talk 18. give a talk 19. look sth up in the library
20. go for a walk 21. go on an adventure 22. hurry to school
23. leave for
II. 根据句子的意思,用所给单词的适当形式填空。
1. to play, 2. amazing, 3. to write, 4. to begin 5. water, 6. surprised,
7. unusual 8. studying 9.came, 10. joined, 11. sent 12. was, 13. had, 14. stay, 15. left
III. 选择填空: 1-5 BDBDB 6-10BADDD 11-15 DBBCD
IV. 完形填空: 1-5 DABCA 6-10 DBDBC
V. 阅读理解 1-5 DABAC 6-10 DCBCD
Keys to Unit 8:
I.
1. attend an interview 2. interview sb. (about sth.) 3. a pile of newspapers
4. follow sb. (into… ) 5. hardly any = almost not/no 6. a long time ago
7. the front door/ garden 8 . in front of 9. in the front of 10. as soon as
11. unusual collections 12. three days/weeks/years ago 13. go inside 14.(be)bad for
15. (be)good for 16. (be)interested in 17. work of art 18. almost everything
19.on the front door 20. collect sth. / a collection of sth. 21.have some tea
22.both… and… 23. have sth to do 24. spend time/money (in) doing …
25.send…to sb. 26.make sb. interested in 27. be educational
28.as a result 29.introduce sb. to…
II. 1. hers 2. interviewing 3. amazing 4. hard; hardly 5. to begin
6. follow 7. surprised 8. usually 9. collection 10. studying
11. make 12. to do 13. unusual 14. cutting 15. collection
16. to sail 17. Riding 18. to learn 19. places 20. sentences
III.1-5 DBBDC 6-10 ACAAC 11-15 CABAA
16-20 CADCD 21-25 BABDA
VI.1-5 ABDBC 6-10 DBCAA
V. (A) CADAB (B) BCBBA
VI. My hobby is collecting stamps. I have many kinds of stamps. How do I get them? First, I save the money to buy stamps from the shop. Second, my parents bring me stamps from many countries of the world. Third, I have friends who send me stamps in return for the ones which I send to them. In this way, my collection becomes larger and larger. Each stamp has a story and you can learn a lot from it.