2017丰台政府工作报告

2017丰台政府工作报告篇一

丰台区2016～2017学年度第一学期期末练习

丰台区2016～2017学年度第一学期期末练习

高三英语

2017. 01

第二节（共10小题；每小题1.5分，共15分）

听下面4段对话或独白。每段对话或独白后有几道小题，从每题所给的A、B、C三个选项中选出最佳选项。听每段对话或独白前，你将有5秒钟的时间阅读每小题。听完后，每小题将给出5秒钟的作答时间。每段对话或独（本试卷满分共150分。考试时间120分钟）

注意事项：

1. 答题前，考生务必先将答题卡上的学校、年级、班级、姓名、准考证号用黑色字迹签字笔填写清楚，并认真核对条形码上的准考证号、姓名，在答题卡的“条形码粘贴区”贴好条形码。

2. 本次考试所有答题均在答题卡上完成。选择题必须使用2B铅笔以正确填涂方式将各小题对应选项涂黑，如需改动，用橡皮擦除干净后再选涂其它选项。非选择题必须使用标准黑色字迹签字笔书写，要求字体工整、字迹清楚。

3. 请严格按照答题卡上题号在相应答题区内作答，超出答题区域书写的答案无效，在试卷、草稿纸上答题无效。

4. 请保持答题卡卡面清洁，不要装订、不要折叠、不要破损。

第一部分 听力理解（共三节 30分）

第一节（共5小题；每小题1.5分，共7.5分）

听下面5段对话。每段对话后有一道小题，从每题所给的A、B、C三个选项中选出最佳选项。听完每段对话后，你将有10秒钟的时间来回答有关小题和阅读下一小题。每段对话你将听一遍。 1. When will the man have English classes? A. On Tuesdays. B. On Thursdays. C. On Saturdays. 2. What does the man like best? A. Food. B. Games. C. Music. 3. What is the woman doing? A. Washing a car.

B. Buying a car.

C. Repairing a car. 4. What’s wrong with the man?

A. He has bad eyesight. B. He has a headache. C. He feels dizzy. 5. What’s the relationship between the speakers? A. Teacher and student. B. Husband and wife. C. Brother and sister.

高三英语第1页（共16页） 白你将听两遍。

听下面一段独白，回答第6至7两道小题。 6. Who is the speaker? A. A shop keeper. B. A postman. 7. Which table is probably talked about?

A. B. 听下面一段对话，回答第8至9两道小题。 8. Why does the man make the call? A. Because the hotel is noisy. B. Because the room is small. C. Because the TV isn’t working. 9. How does the man feel at last? A. Satisfied. B. Puzzled. 听下面一段对话，回答第10至12三道小题。 10. Which library will the speakers go to？ A. The one near the shopping center. B. The one opposite the park. C. The one by the hospital. 11. How will they get to the library? A. By car. B. By bus. 12. What time will they meet? A. At 10:00. B. At 10:20. 听下面一段独白，回答第13至15三道小题。 13. What programme will be held on Monday? A. Barbecue. B. Quiz Night. 高三英语第2页（共16页）C. A waiter.

C.

C. Annoyed. C. On foot. C. At 10:30. C. Dancing Class.

14. Where will Film Club Night be held? A. At the Main Gate. B. In the Dining Hall.

C. In the Students’ Reading Room. 15. Why does the speaker give this speech? A. To tell the changes. B. To invite more students. C. To introduce new activities.

第三节（共5小题；每小题1.5分，共7.5分） 

听下面一段对话，完成第16题至第20题五道小题，每小题仅填写一个词。听对话前，你将有20秒钟的时间阅读试题，听完后你将有60秒钟的作答时间。这段对话你将听两遍。

第二部分 知识运用（共两节 45分）

第一节 单项填空（共15小题；每小题1分，共15分） 

从每题所给的A、B、C、D四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。

21. My friend hasn’t answered my letter yet, and I _________ for a reply. A. waited B. have waited C. am waiting D. will wait

22. Everyone tried to help the family _________ house had burned down in the fire. A. why B. whose C. where D. which

23. Don’t worry about the work. By the time you get back from your vacation, we

_________ care of everything. A. will have taken B. take C. have been taking D. are taking

高三英语第3页（共16页） 24. We must do _________ we can in order to save oil, as it is an irreplaceable

natural resource. A. however B. wherever C. whoever

D. whatever

25. I _________ snow before I moved to Canada last year.

A. wasn’t seeing

B. don’t see

C. had never seen D. would not see

26. — Hello, this is Dan speaking.

— Hi, Dan. It’s Milly. I’m calling _________ about your guitar lessons. A. asked B. to ask C. ask D. asking 27. Take the mask with you _________ the air is bad.

A. so that B. as if C. in case

D. even though

28. Knocking loudly on the desktop, Mr. Brown made his anger _________.

A. knowing B. to know

C. having known D. known

29. One advantage of having a car is _________ you don’t need to rely on public

transportation. A. that

B. whether C. what

D. why

30. The coffee _________ when I walked into the kitchen. A. was being made B. had made C. has been made D. was making

31. “You _________ have a wrong number,” she said. “There is no one of that name here.”

A. would B. need

C. must

D. could

32. Newly-built wooden cottages line the street, _________ the old town into a

dreamland. A. turn B. turning C. to turn D. turned 33. _________ you paid for the taxi fare, please let me pay for our dinner. A. Since B. Until C. Unless D. Although 34. If we _________ a ticket earlier, we would have watched the film.

A. have booked

B. booked

C. book

D. had booked

35. An elephant _________ is the earth’s largest land animal has few natural enemies

other than human beings. A. what

B. which

C. when

D. where

高三英语第4页（共16页）

第二节 完形填空（共20小题；每小题1.5分，共30分） 

阅读下面短文，掌握其大意，从每题所给的A、B、C、D四个选项中，选出最佳选项，并在答题卡上将该项涂黑。

What I Regret

At lunchtime, Jimmy, Patrick, Devon, and I began our regular routine of that I like to read?

As I stared at the announcement, I knew I needed to to Joel––even if he did not want to become my friend again. I was certain that my three friends would not I was also certain that I losing them as well. However, I knew that I would lose myself if I did nothing.

As the dismissal bell rang, I gathered up my books, took (a) deep our lunches. I glanced across the busy cafeteria and saw the student, Joel. He was holding his plate and waiting in lines.

Patrick him too. “Why’s the new kid dressed like the headmaster?” he asked. Devon and Jimmy laughed.

“Joel’s cool. He’s in my English and history classes,” I said. However, I kept the that Joel and I had become friends when we worked on a project together. We that we were both enthusiastic readers––something I would never admit to Patrick, Jimmy, and Devon.

I saw that Joel was toward us. “Don’t do it,” I thought, but in seconds he was at our table. My friends raised their eyebrows. Jimmy, Devon and Patrick piled their backpacks on the table and chairs so that there was no left for another person to sit down. Patrick said, “I don’t think we have room.”

This situation froze the air. I could Joel looking at me, but I stared at my as if it contained precious pearls of wisdom instead of rice and beans. After a long, uncomfortable pause, Joel I have spoken up for him, but I couldn’t walk away from my three friends, could I? Joel didn’t speak to me after that . He was soon around with another group of kids. A few months later, I saw an announcement about Joel being chosen to be president of the class book club. I was for Joel’s achievements, but I realized I had made a big mistake I said nothing at the lunch table that day. Why was I so that my friends might find out

高三英语第5页（共16页） and went to find Joel.

36. A. good B. new C. lucky 37. A. noticed B. helped C. examined 38. A. words B. ideas C. truth 39. A. forgot B. argued C. discussed 40. A. nodding B. flying C. walking 41. A. book B. food C. time 42. A. awkward

B. dangerous

C. pleasant 43. A. taste B. smell C. hear 44. A. face B. lunch C. backpack 45. A. left B. laughed C. started 46. A. need B. should C. would 47. A. greeting B. change C. meeting 48. A. turning

B. looking

C. showing 49. A. happy B. sorry C. thankful 50. A. if B. until C. when 51. A. confused B. surprised C. excited 52. A. adapt B. apologize C. smile 53. A. refuse B. agree C. mind 54. A. risked B. permitted

C. tried

55. A. delight

B. silence C. breath

高三英语第6页（共16页）D. top D. promise D. discovered D. driving D. space D. comfortable D. feel D. table D. stopped D. must D. lesson D. hanging D. anxious D. where D. afraid D. refer D. choose D. suggested D. thought

D. called

第三部分 阅读理解（共两节 40分）

第一节：（共15小题；每小题2分，共30分）

阅读下列短文，从每题所给的A、B、C、D四个选项中，选出最佳选项，并在答题卡上将该项涂黑。

高三英语第7页（共16页） 56. Natasha bought her scooter ________. A. on a website B. at a supermarket C. in a second-hand store D. from a scooter factory 57. According to Natasha, the scooter _________. A. loses its front wheel B. makes a loud noise C. has no handlebars D. runs too slowly

58. Natasha felt _________ about her purchase. A. nervous B. pleased C. disappointed D. excited 59. Natasha wrote this letter to _________. A. buy a new scooter B. get her money back C. advertise the scooter D. ask how to use the scooter

B

Climbing in the Clouds

Edmund Percival Hillary

was one of the greatest explorers of the twentieth century. He was born in Auckland, New Zealand, in 1919. He discovered an interest in mountain climbing while he was still in high school and began climbing New Zealand’s Southern Alps.

Like his father, Hillary earned his living as a beekeeper. However, he continued to climb mountains. His goal was to climb Mt. Everest, which is the highest mountain in the world. By the early 1950s, several expeditions (探险队) had attempted to reach the summit

of Everest, but all had failed. Then, in 1953, Hillary and a Nepalese climber named Tenzing Norgay became the first two people to reach the top of the world.

Hillary’s spirit of exploration was not satisfied. He joined an expedition to Antarctica and reached the South Pole in 1958. He also made an expedition up the Ganges River to its source in the Himalayas. Sir Edmund Hillary was a brave adventurer. He went where no man or woman had gone before.

Although Hillary was best known as the young man who climbed to the

高三英语第8页（共16页）{2017丰台政府工作报告}.

summit of Mt. Everest in the 1950s, he continued his journeys to far-off places into his senior years. For instance, in his mid-sixites Hillary flew to the North Pole with Neil Armstrong, the first man on the moon. Moreover, Hillary authored many books. their skin. Skin cancer is on the rise among young people. Teens should make some basic lifestyle changes to help slow this trend.

Melanoma, a skin cancer, is the second most common form of cancer for However, his most lasting gift, perhaps, was the Sir Edmund Hillary Himalayan Trust (信托基金). It raised millions of dollars and contributed to schools, hospitals and many other public improvements in the Sherpa villages of Nepal. In January 2008, Sir Edmund Hillary died at the age of 88.

Despite being a great adventurer and known for the treasure he left, Sir Edmund Hillary always modestly referred to himself as a simple beekeeper from New Zealand.

60. Hillary was interested in _________ when he was in high school. A. mountain-climbing B. bee-keeping C. money-raising

D. story-writing

61. Hillary became well-known because _________. A. he reached both the South Pole and the North Pole B. he was the first to reach the top of Mt. Everest C. he lived in places where no humans had gone D. he made a lot of money as a beekeeper

62. _________ is the right order of Hillary’s expeditions.

a. He traveled to the source of the Ganges River. b. He climbed New Zealand’s Southern Alps. c. He reached the summit of Everest. d. He explored the North Pole. A. a-c-d-b

B. b-d-c-a

C. a-b-c-d

D. b-c-a-d

63. We can learn from the passage that Hillary is _________. A. outgoing and fearless B. talented and honest C. determined and caring

D. hardworking and careful

C

Throughout childhood, kids are encouraged to take good care of their bodies by getting enough rest, exercising regularly, eating healthful foods, and drinking plenty of water. But recently children and teenagers have been warned to protect

高三英语第9页（共16页） people aged 15 to 29. Unfortunately, the risk of developing it has increased in recent years. One of the most important causes of melanoma is UV radiation (辐射) damage. Scientists think that some of this damage is directly linked to the use of tanning beds (皮肤美黑床). Now they have found that these beds produce UVA radiation and UVB radiation, both of which are dangerous.

Clearly, avoiding tanning beds is one way teens can protect their skin, but they must do more. They need to protect themselves from too much sun exposure as well. They must learn to stay out of the sun in summer. Doctors say that to avoid the harmful rays of the sun, young people should stay indoors between 10 a.m. and 2 p.m., when the rays are the strongest. When teens have to be outdoors during these hours, they should use sunscreen that provides protection from both UVA and UVB rays.

Protection is the most effective weapon in the battle against melanoma, but paying close attention to the skin is also vital. Melanoma often begins as a mole (痣) on the skin. If it’s caught before it spreads below the skin’s surface, it’s highly curable. Therefore, teens should watch for both new moles and existing moles. If they see anything that looks unusual, they should visit a skin doctor right away.

Teens who continue to bake in the sun to achieve that perfect tan should realize the potential consequences of their behavior. Is a sun-kissed look really worth the risk of melanoma? It’s not too late to change your habits and reduce your exposure to harmful UV rays. Take action now to protect your skin and avoid this deadly disease later.

64. Teens are warned to protect their skin because _________. A. their lifestyles are not healthy B. skin helps slow the radiation damage C. skin cancer is growing among teenagers D. they spend longer time staying outdoors

高三英语第10页（共16页）

2017丰台政府工作报告篇二

丰台区2016-2017学年度第一学期期末练习

丰台区2016-2017学年度第一学期期末练习

一、选择题（本题共30分，每小题3分）

1. 如图，点D，E分别在△ABC 的AB，AC边上，且DE∥BC

， 如果AD∶AB=2∶3，那么DE∶BC等于 A. 3∶2 C. 2∶3

B. 2∶5 D. 3∶5

A

D

C

2. 如果⊙O的半径为7cm，圆心O到直线l的距离为d，且d=5cm，那么⊙O和直线l的位置关系是 A. 相交 A. 4∶9

2

B. 相切 B. 2∶3

C. 相离 C.

D. 不确定 D. 16∶81

3. 如果两个相似多边形的面积比为4∶9，那么它们的周长比为

2∶3

2

2

4. 把二次函数yx22x4化为yaxhk的形式，下列变形正确的是 A. yx13 C. yx15

2

B. yx23 D. yx13

2

5. 如果某个斜坡的坡度是1：3，那么这个斜坡的坡角为 A. 30° B. 45° C. 60° D. 90°

6. 如图，AB是⊙O的直径，C，D两点在⊙O上， A如果∠C=40°，那么∠ABD的度数为 A. 40° B. 50° C. 70° D. 80° 7. 如果A（2，y1），B（3，y2）两点都在反比例函数y大小关系是 A. y1y2

B. y1y2

C. y1y2

B

1

的图象上，那么y1与y2的x

D. y1y2

8. 如图，AB为半圆O的直径，弦AD，BC相交于点P，如果CD = 3，AB = 4， 那么S△PDC∶S△PBA等于 A. 16∶9

B. 3∶4

C. 4∶3 D. 9∶16

9. 如图，某校数学兴趣小组利用自制的直角三角形硬纸板DEF来测量操场旗杆AB的高度，他们通过调整测量位置，使斜边DF与地面保持平行，并使边DE与旗杆顶点A在同一直线上，已知DE=0.5米，EF=0.25米，目测点D到地面的距离DG=1.5米，到旗杆的水平距离DC=20米，则旗杆的高度为 A. 105米 C. 11.5米

B.（10+1.5）米 D. 10米

C

DB

10. 如图，在菱形ABCD中，AB=3，∠BAD=120°，点E从点B出发，沿BC和CD边

移动，作EF⊥直线AB于点F，设点E移动的路程为x，△DEF的面积为y，则y关于x的函数图象为

A. B. C.

D.

二、填空题（本题共18分，每小题3分）

11. 二次函数y2x15的最小值是__________．

2

12. 已知

x4xy

，则__________．

yy3

13. 已知一扇形的面积是24π，圆心角是60°，则这个扇形的半径是． 14. 请写出一个符合以下两个条件的反比例函数的表达式：

①图象位于第二、四象限；

②如果过图象上任意一点A作AB⊥x轴于点B，作AC⊥y轴于点C，那么得到的矩形ABOC的面积小于6．

15. 如图，将半径为3cm的圆形纸片折叠后，劣弧中点C恰好与圆

心O距离1cm，则折痕AB的长为 cm．

16. 太阳能光伏发电是一种清洁、安全、便利、高效的新兴能源，因而逐渐被推广使用．如

图是太阳能电池板支撑架的截面图，其中的粗线表示支撑角钢，太阳能电池板与支

cm，AB的倾斜角为30°，BE=CA=50 3

cm，支撑角钢CD，EF与底座地基台面接触点分别为D，F，CD垂直于地面，FE⊥AB于点E．两个底座地基高度相同（即点D，F到地面的垂直距离相同），均为 30 cm，点A到地面的垂直距离为50 cm，则支撑角钢CD的长度是 cm，AB的长度是 cm．

撑角钢AB的长度相同，支撑角钢EF长为

三、解答题（本题共35分，每小题5分） 17. 计算：6tan 30°+cos245°-sin 60°． 18. 如图，在Rt△ABC中，∠C=90°，tanA

求AB的长．

A19. 已知二次函数yxxc的图象与x轴只有一个交点．

2

3

，BC=12， 4

B{2017丰台政府工作报告}.

C

A

（1）求这个二次函数的表达式及顶点坐标； （2）当x取何值时，y随x的增大而减小．

20. 如图，已知AE 平分∠BAC，

ABAD

． 

AEAC

B

C

（1）求证：∠E=∠C；

（2）若AB=9，AD=5，DC=3，求BE的长．

21. 如图，在平面直角坐标系xOy中，反比例函数

y图象的一个交点为A（-1，m）．

（1）求这个反比例函数的表达式；

（2）如果一次函数yx1的图象与x点B（n，0），请确定当x＜nk

比例函数y的值的范围．

x

k

的图象与一次函数yx1的

22. 如图，已知AB为⊙O的直径，PA，PC是⊙O的切线，A，C为切点，∠BAC=30°． （1）求∠P的度数； （2）若AB=6，求PA的长．

23. 已知：△ABC． （1）求作：△ABC的外接圆，请保留作图痕迹； （2）至少写出两条作图的依据．

A

BC

四、解答题（本题共22分，第24至25题，每小题5分，第26至27题，每小题6分） 24. 青青书店购进了一批单价为20元的中华传统文化丛书．在销售的过程中发现，这种

图书每天的销售数量y（本）与销售单价x（元）满足一次函数关系：

，那么销售单y3x10820x36．如果销售这种图书每天的利润为p（元）

价定为多少元时，每天获得的利润最大？最大利润是多少？

25. 如图，将一个Rt△BPE与正方形ABCD 叠放在一起，并使其直角顶点P落在线段CD

上（不与C，D两点重合），斜边的一部分与线段AB重合． E（1）图中与Rt△BCP相似的三角形共有________个，分别是

______________；

（2）请选择第（1）问答案中的任意一个三角形，完成该三角

形与△BCP相似的证明． F

AD

P

B 26. 有这样一个问题：探究函数y

对函数y（1）函数y

x2

的图象与性质．小美根据学习函数的经验，x

x2

的图象与性质进行了探究．下面是小美的探究过程，请补充完整： x

x2

的自变量x的取值范围是___________； x

（2）下表是y与x的几组对应值．

求m的值；

（3）如下图，在平面直角坐标系xOy中，描出了以上表中各对对应值为坐标的点.

根据描出的点，画出该函数的图象；

y（4）结合函数的图象，写出该函数的一条性质：

5

4321

-5-4

-3-2

-1

-1-3-4-5

O

12345

27. 如图，以△ABC的边AB为直径作⊙O，与BC交于点D，点E是⌒BD

的中点，连接

AE交BC于点F，ACB2BAE．

（1）求证：AC是⊙O的切线；

2

（2）若sinB，BD=5，求BF的长．

3

五、解答题（本题共15分，第28题7分，第29题8分）

28. 已知抛物线G1：yaxh22的对称轴为x = -1，且经过原点． （1）求抛物线G1的表达式；

（2）将抛物线G1先沿x轴翻折，再向左平移1个单位后，与x轴分别交于A，B两

点（点A在点B的左侧），与y轴交于C点，求A点的坐标； （3）记抛物线在点A，C之间的部分为图象G2（包含A，C两点），如果直线

m：ykx2与图象G2只有一个公共点，请结合函数图象，求直线m与抛物线G2的对称轴交点的纵坐标t的值或范围．

29. 如图，对于平面直角坐标系xOy中的点P和线段AB，给出如下定义：如果线段AB

上存在两个点M，N，使得∠MPN=30°，那么称点P为线段AB的伴随点．

5（1）已知点A（-1，0），B（1，0）及D（1，-1），E , ，F（0，， 2）2①在点D，E，F中，线段AB的伴随点是_________；

②作直线AF，若直线AF上的点P（m，n）是线段AB的伴随点，求m的取值范围；

（2）平面内有一个腰长为1的等腰直角三角形，若该三角形边上的任意一点都是某

条线段a的伴随点，请直接写出这条线段a的长度的范围．

2017丰台政府工作报告篇三

2017年丰台区期末数学试题及答案

丰台区2016-2017学年度第一学期期末练习

初 三 数 学

2017.01

一、选择题（本题共30分，每小题3分）下列各题均有四个选项，其中只有一个是符合题意的． ．．1. 如图，点D，E分别在△ABC 的AB，AC边上，且DE∥BC， 如果AD∶AB=2∶3，那么DE∶BC等于 A. 3∶2

C. 2∶3

2

C

B. 2∶5 D. 3∶5

AD

2. 如果⊙O的半径为7cm，圆心O到直线l的距离为d，且d=5cm，那么⊙O和直线l的位置关系是

A. 相交 A. 4∶9

B. 相切 B. 2∶3

C. 相离 C.

D. 不确定 D. 16∶81

B

3. 如果两个相似多边形的面积比为4∶9，那么它们的周长比为

2∶3

2

2

4. 把二次函数yx22x4化为yaxhk的形式，下列变形正确的是 A. yx13 C. yx15

2

B. yx23 D. yx13

2

5. 如果某个斜坡的坡度是1：3，那么这个斜坡的坡角为 A. 30° B. 45° C. 60° D. 90°

6. 如图，AB是⊙O的直径，C，D两点在⊙O上，如果∠C=40°，那么∠ABD的度数为 A. 40° B. 50° C. 70° D. 80°

7. 如果A（2，y1），B（3，y2）两点都在反比例函数yA. y1y2

8. 如图，AB为半圆O的直径，弦AD，BC相交于点P，如果CD = 3，AB = 4， 那么S△PDC∶S△PBA等于 A. 16∶9

9. 如图，某校数学兴趣小组利用自制的直角三角形硬纸板DEF来测量操场旗杆AB的高度，他们通过调整测量位置，使斜边DF与地面保持平行，并使边DE与旗杆顶点A在同一直线上，已知DE=0.5米，EF=0.25米，目测点D到地面的距离DG=1.5米，到旗杆的水平距离DC=20米，则旗杆的高度为 A. 105米 C. 11.5米

B.（10+1.5）米 D. 10米

CB

B. y1y2 C. y1y2

1

的图象上，那么y1与y2的大小关系是 x

D. y1y2

B. 3∶4

C. 4∶3 D. 9∶16

D

10. 如图，在菱形ABCD中，AB=3，∠BAD=120°，点E从点B出发，沿BC和CD边移动，作EF⊥直线AB

于点F，设点E移动的路程为x，△DEF的面积为y，则y关于x的函数图象为

A. B. C. D.

二、填空题（本题共18分，每小题3分）

11. 二次函数y2x15的最小值是__________．

2

12. 已知

x4xy

，则__________．

yy3

13. 已知一扇形的面积是24π，圆心角是60°，则这个扇形的半径是．

14. 请写出一个符合以下两个条件的反比例函数的表达式：

①图象位于第二、四象限；

②如果过图象上任意一点A作AB⊥x轴于点B，作AC⊥y轴于点C，那么得到的矩形ABOC的面积小于6．

15. 如图，将半径为3cm的圆形纸片折叠后，劣弧中点C恰好与圆心O

距离1cm，则折痕AB的长为cm．

16. 太阳能光伏发电是一种清洁、安全、便利、高效的新兴能源，因而逐渐被推广使用．如图是太阳能电池板

支撑架的截面图，其中的粗线表示支撑角钢，太阳能电池板与支撑角钢AB的长度相同，支撑角钢EF长3

cm，AB的倾斜角为30°，BE=CA=50 cm，支撑角钢CD，EF与底座地基台面接触点分别为D，3

F，CD垂直于地面，FE⊥AB于点E．两个底座地基高度相同（即点D，F到地面的垂直距离相同），均为 30 cm，点A到地面的垂直距离为50 cm，则支撑角钢CD的长度是 cm，

AB的长度是．

为

三、解答题（本题共35分，每小题5分） 17. 计算：6tan 30°+cos245°-sin 60°．

18. 如图，在Rt△ABC中，∠C=90°，tanA

求AB的长．

3

，BC=12， 4

B

AC

19. 已知二次函数yx2xc的图象与x轴只有一个交点．

（1）求这个二次函数的表达式及顶点坐标； （2）当x取何值时，y随x的增大而减小．

20. 如图，已知AE 平分∠BAC，

A

ABAD

． 

AEAC

B

（1）求证：∠E=∠C；

（2）若AB=9，AD=5，DC=3，求BE的长．

21. 如图，在平面直角坐标系xOy中，反比例函数y（-1，m）．

（1）求这个反比例函数的表达式；

（2）如果一次函数yx1的图象与x轴交于

点B（n，0），请确定当x＜n时，对应的反

k

比例函数y的值的范围．

x

C

k

的图象与一次函数yx1的图象的一个交点为Ax

22. 如图，已知AB为⊙O的直径，PA，PC是⊙O的切线，A，C为切点，∠BAC=30°．

（1）求∠P的度数；

（2）若AB=6，求PA的长．

23. 已知：△ABC．

（1）求作：△ABC的外接圆，请保留作图痕迹； （2）至少写出两条作图的依据． A

BC

四、解答题（本题共22分，第24至25题，每小题5分，第26至27题，每小题6分）

24. 青青书店购进了一批单价为20元的中华传统文化丛书．在销售的过程中发现，这种图书每天的销售数量

y（本）与销售单价x（元）满足一次函数关系：y3x10820x36．如果销售这种图书每天的利

润为p（元），那么销售单价定为多少元时，每天获得的利润最大？最大利润是多少？

25. 如图，将一个Rt△BPE与正方形ABCD 叠放在一起，并使其直角顶点P落在线段CD上（不与C，D两点

重合），斜边的一部分与线段AB重合．

（1）图中与Rt△BCP相似的三角形共有________个，分别是______________；

（2）请选择第（1）问答案中的任意一个三角形，完成该三角形与△BCP相似的证明．

E

F

AD

P B{2017丰台政府工作报告}.

26. 有这样一个问题：探究函数y

x2

的图象与性质．小美根据学习函数的经验，对函数yx

象与性质进行了探究．下面是小美的探究过程，请补充完整：

x2

的图x

x2

的自变量x的取值范围是___________； x

（2）下表是y与x的几组对应值．

（1）函数y

求m的值；

（3）如下图，在平面直角坐标系xOy中，描出了以上表中各对对应值为坐标的点.

根据描出的点，画出该函数的图象；

y（4）结合函数的图象，写出该函数的一条性质：

5

4

3

2

1

-5-4-3-2-1O12345 -1

-3

-4

-5

⌒ 的中点，连接AE交BC于点F，27. 如图，以△ABC的边AB为直径作⊙O，与BC交于点D，点E是BD

ACB2BAE．

（1）求证：AC是⊙O的切线；

（2）若sinB

2

，BD=5，求BF的长． 3

2017丰台政府工作报告篇四

2016-2017年丰台高三语文期末试卷及答案 - 11

丰台区2016～2017学年度第一学期期末练习

高 三 语 文 2017.01

本试卷满分共150分。考试时间150分钟。

一、本大题共8小题，共24分。

阅读下面的材料，完成1—8题。

材料一

1962年美国正式投入使用第一台电子可编程序的工业机器人，标志着第一代机器人诞生，从此机器人开始进入人类生活领域。有人认为机器人是引领全球经济变革的颠覆性技术，它可能极大程度地改变甚至颠覆人们现在的生活方式和理念。如工业机器人造就了“黑灯工厂”，即不需开灯的全机器人工厂；医学上，达•芬奇机器人已经能帮助医生完成更高质量、低创伤的手术，且能进行远程操作；家庭生活中，多款家庭机器人已经能够帮助看家、与人聊天、陪小孩学习。机器人正逐步实现智能化，以满足人类更高层次的需求。

微电子、大数据、云计算、移动互联网等信息技术的发展为机器人智能化程度的提高奠定了坚实基础。通过摄像头、传感器感知外部环境变化，凭借强大的计算机处理能力和大数据、云计算技术获得超强的运算处理能力，甚至模拟人类解决问题的能力，机器人正从依赖嵌入程序或输入指令执行命令向自主学习、自主决策和自主作业的方向发展。近年来，国际商业机器公司（IBM）、谷歌、微软、亚马逊等信息技术企业大举进入机器人产业，带来强大的信息网络技术，进一步推动了机器人的智能化。

此外，机器人产业发展趋势还包括以下几个方面。（1）人形机器人快速发展。谷歌旗下波士顿动力公司的阿特拉斯类人机器人身高1.9米，重150公斤，能够两足行走，上肢举起和搬运重物。日本软银公司的人形机器人拥有自己的表情且“健谈”。（2）机器人概念从传统的机械臂扩展到更广泛的范围。随着中央处理器、传感器的微型化和产品的智能化、联网化，多台机器人间能实现数据共享和协作，汽车、家电、手机、住宅、无人机等产品也具备了机器人的特征。（3） 。传统上工业机器人往往被铁栅隔离以防止伤及工人，新一代机器人与人在同一个空间内紧密接触、密切配合，安全地并肩工作。例如库卡轻型智能工业助手机器人在接触到人体时，受力传感器会及时限制机器人的运行力量，自动与人保持安全距离。（4）机器人成本持续下降。随着机器人数字化零部件的增加，兼之技术和工艺日益成熟，其成本比雇佣工人低的拐点正在到来。

（取材于《迎接机器人时代的到来》）

1.下列对“材料一”内容