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四川省成都树德中学2014届高三3月阶段性考试英语试题 Word版含答案

四川省成都树德中学2014届高三3月阶段性考试英语试题 Word版含答案
四川省成都树德中学2014届高三3月阶段性考试英语试题 Word版含答案

高2011级第六期3月阶段性考试英语试题

第I卷

第一部分英语知识应用

第一部分单项填空(共10小题;每小题1分,共10分)

1.——Why did I make such a silly decision? I really feel upset.

——_______. Even the wise are not always free from error.

https://www.wendangku.net/doc/5c11462543.html,e on

B. Cheers

C. That’s all right

D. No problem

2. A Nepal plane crashed in bad weather, ________ all 18 on board.

A.killing

B. killed

C. having killed B. to kill

3.An important feature of consumer society is that we gain self-confidence through

______ we own.

A.that

B. what

C. which

D. /

4.Outdoor activities are as much a part of childhood for this generation of Chinese

children as they __________ for their parents and grandparents.

A.are

B. will be

C. were

D. have been

5.Since her only child passed away a few years ago, family has been a ________ topic

for her.

A.forbid

B. forbade

C. forbidding

D. forbidden

6.Most volunteers are from universities, _________ it is not uncommon to see middle

and primary school students too.

A.though

B. however

C. since

D. even if

7.The research also raises the question ________ children from low-income, less

educated families need earlier aid.

A.what

B. that

C. when

D. whether

8.——Where did President Xi Jinping have steamed dumplings?

——It was at the Qing Feng Steamed Dumpling Shop ___________ he lined up with other customers.

A.that

B. in which

C. where

D. when

9.If the government takes measures to enrich senior citizens' social and spiritual life, it

________ help develop a truly harmonious society.

A.can

B. must

C. shall

D. should

10.Nowadays, ________ growing number of Chinese students are going abroad to seek

________ better future.

A.the, a

B. a, the

C. a, a

D. the, the

第二部分完形填空(共20小题,每小题1.5分,共30分)

Our tolerating ability is indeed beyond our imagination. But not until the very critical moment will we realize our 1l tolerating ability.

There was a woman in the countryside who had to 12 with her children wherever she could at the age of 26 due to the Japanese army’s 13. Many people could not bear the 14 and wanted to commit suicide. After she knew about it, she would come to those

people and 15 them by saying, ―Don’t do that silly thing. There are no such setbacks that we could not overcome. The Japanese armies are sure to be 16 one day!‖Finally she insisted until the day when all the Japanese armies were kicked out of China. However, her son died of disease without 17 medicine and nutrition in those days of hardships. Her husband lay in bed for two days without eating and drinking 18. She teared to her husband and said, ―We have a tough 19, but however tough our lives will be, we should never 20. Though our son has passed away, we can have another. There are no such setbacks that we could not overcome.‖

After giving birth to the second son, her husband died of edema(水肿), which 21 blew her away. But eventually, she 22 and hugged the three young children, saying, ―My sweet hearts, don’t feel scared. You still have me, your dear mum!‖It took her painstaking efforts to raise her children up and the life of her family was getting 23. She was aging 24 and could not do the farm work any more. 25 she stayed at home and did some housework. Nevertheless, the Heaven 26 to show no affection to her who had undergone a rough life. She lived until 86. Before she went to Heaven, she said to her children, ―You all should live 27 your best. There are no such setbacks that we could not o vercome!‖

We will 28 get to realize our own iron will and strong tolerating 29 after getting stricken heavily. Therefore, no matter what you are suffering from now, do not merely complain about the 30 of our destiny.

11. A. potential B. partial C. beneficial D. influential

12. A. fight B. live C. escape D. hide

13.A.arrival B. attack C. activity D. invasion

14. A. trouble B. sorrow C. starvation D. suffering

15. A. persuaded B. informed C. comforted D. warned

16. A. killed B. defeated C. punished D. blamed

17. A. sufficient B. effective C. satisfactory D. proper

18. A. nothing B. everything C. anything D. something

19. A. destiny B. environment C. period D. future

20. A. break away B. break down C. give away D. give up

21. A. immediately B. exactly C. almost D. slowly

22. A. struggled B. cured C. weakened D. recovered

23. A. better B. sadder C. worse D. richer

24. A. eventually B. gradually C. healthily D. unluckily

25. A. But B. And C. Then D. So

26. A. seemed B. happened C. attempted D. intended

27. A. for B. to C. at D. with

28. A. only B. never C. even D. still

29. A. effort B. will C. desire D. ability

30. A. arrangement B. unfairness C. appointment D. unhappiness

第三部分阅读理解(共两节,满分50 分)

第一节阅读下列短文,并选出最佳选项。(共20小题;每小题2分,共40分)

A

More than two decades ago, a 10-year-old schoolgirl threw a bottle into the sea off the coast of Hull as she went on a ship on a family holiday, hoping to get a response from a stranger in a faraway land. Inside the bottle was a scrawled letter from Zoe Lemon, a youngster with a love of "ballet, playing the flute and the piano", who had just boarded a ship heading for a holiday in Germany.

She told her expected recipients of her pet hamster and fish, both called Sparkle, and her parents who were both teachers.

Miss Lemon, of Salford, Greater Manchester, soon forgot about her act of fantastic, eventually marrying and having a child herself.

But this Christmas she was extremely surprised to receive a reply after 23 years.

It turned out to be a reply to her letter from Piet and Jacqueline Lateur from near Rotterdam. Mr Lateur was walking his dog in the Oosterschelde dykes(坝), near where he and his wife live in Serooskerke, when he found the bottle with Zoe’s letter inside.

Mrs Averianov, 33, who works in a jewellery shop, said: ―It’s been a bit crazy really. My parents came to visit on Christmas day and they had this letter from Europe addressed to my maiden name, Lemon.

Since receiving the letter, Mrs Averianov has been in contact with Mr Lateur via email and asked to see photographs of where the bottle was found.

He told her: ―I am keeping your little letter on my piano. I know you are no longer a little girl but you asked me to write you so I have.‖

Mrs Averianov’s father, John Lemon, 68, had encouraged his daughter to throw the message into the sea on a family holiday and now she is considering doing the same for her five-year-old son Maksim.

She said: ―I’ll probably wait until he’s a bit older and can understand and write a letter, but maybe we’ll do it by attaching it to a balloon.‖

From https://www.wendangku.net/doc/5c11462543.html,, (Jan,2014)

31.When did Zoe Lemon write the letter?

A.In 1990.

B. In 1991.

C. In 2013.

D. In 2014

32.What does the underlined phrase in paragraph 6 mean?

A. her given name

B. her nick name

C. family name used before marriage

D. family name used after marriage

33.What can we know about the letter written 23 years ago?

A.Its reply was received by Zoe herself.

B.It is still carefully kept by Mr Lateur.

C.Zoe was sure it would be replied one day.

D.Zoe’s father discouraged her from writing it.

34.Which of the following can be the best title of the passage?

A. An Unexpected Letter

B. A Reply Waited for Long

C. A Reply from a Stranger

D. A Letter from a Faraway Land

B

America's child movie star Shirley Temple Black died late Monday evening at the age of 85. Her fans in China are also deeply saddened. Temple is just one example of

movie stars that China adored, and still adores. Here's our editor's pick of the top movie stars who have influenced China.

1. Sylvester Stallone

Oh, Rambo! The first strong American man that China knew. His accented English, easily recognizable even for someone who doesn't speak English, and his eyes that never seemed to smile, makes him someone whom cannot be forgotten. He represented the strong American image, and even stirred a boxing and bodybuilding fever in China.

2.Charlie Chaplin (April 16, 1889 – December 25, 1977)

In the 20th century, it is not too much to say that Einstein made the greatest contributions to science, and not many would disagree that Chaplin did the same for film. He was the first actor that introduced comedy to most Chinese viewers, and politically, he was also a close friend of China’s. His silent films broke the barrier of language and his form of art was recognized by all. It will be a difficult task to find a person in China who does not recognize Chaplin, even today.

3. Shirley Temple ( April 23, 1928 – February 10, 2014)

When Chinese audiences saw this adorable child star for the first time on screen, Shirley Temple had already lived for more than half a century. In her movies, she was always alone or in trouble, but this adorable little blonde(金发女郎) could always resolve anything with her kindness, push away the fogginess and bring about light. The brand "Shirley Temple" was a product of the Great Depression. People watched her act to forget their hardships as Temple entertained the poor, the rich, adults and children alike. Several decades later, when her films were screened in China, the effects were the same.

4. Audrey Hepburn( May 4, 1929 – January 20, 1993)

She will forever be the princess in Chinese people's hearts. Even to this day, a large number of tourists go to Rome to visit the Mouth of Truth with their lovers and eat ice cream on the Spanish Steps. Her sense of style seems to never go out of style. When she was alive, she was living perfection. Even after her death, she has remained an icon. That's something that only Audrey Hepburn is capable of.

35.According to the passage, who was most known for comedy in China?

A.Sylvester Stallone

B. Charlie Chaplin

C. Shirley Temple

D. Audrey

Hepburn

36.What can we learn from the passage?

A.Sylvester Stallone taught boxing and bodybuilding and caused a fever in China.

B.Charlie Chaplin was China’s close friend because he introduced comed y to

China.

C.Audrey Hepburn’s movie made the Mouth of Truth and the Spanish Steps

popular.

D.Shirley Temple’s works can only help Americans forget hardships and enjoy life

better.

37.What does the underlined word ―icon‖ mean in the passage?

A.symbol

B. sign

C. mystery

D. heroine

38.In which part can we most probably read this passage?

A.Art

B. Columns

C. Music & Theater

D. Film &TV

C

The Lunar New Year, which starts in late January this year, is the most important festival for Chinese people as most of them drop any business at hand to go back to

their hometown to see their families. It is a tradition that has been cherished since ancient times, but as social mobility increases in modern times, the road to family reunions has become very uneasy.

It is not the higher travel costs, nor the expected big spending on gifts and other festival items, but the train ticket that has driven many travelers mad. I’ve heard some colleagues complain that they have tried every means to secure a train ticket, only to find it a mission impossible. Some of them have turned to the latest software to aid online booking; others have sought help from friends to increase the possibility of successful booking.

No doubt chunyun, the Spring Festival travel season, is the largest-scale annual human migration in the world. Last year, 220 million passengers traveled by train during the Spring Festival season, which usually lasts 40 days. It is a huge jump from 10 years ago, when the number was 128 million.

With the big sudden increase in demand, the railway company has increased investment in railway construction; still, it cannot bridge the supply gap, leading to fierce public complaints and criticism.

Admittedly, it is almost impossible for the railway company to suddenly improve its capacity to meet the explosive demand during the Spring Festival holiday. Moreover, any temporary increase in capacity would become unnecessary after the holiday and mean great commercial losses during the off season.

What the company can reasonably do is gradually improve its capacity while focusing on better distribution of its existing resources during the special peak season. At any rate, however, the problem cannot be solved overnight.

https://www.wendangku.net/doc/5c11462543.html,pared with ten years ago, the percentage of passengers last year increased

by________.

A.40%

B. 58%

C. 71%

D. 83%

40.Which of the following does the author probably agree with?

A.Social mobility in modern times hasn’t changed much in these years.

B.The latest software may increase the possibility of successful booking.

C.Higher travel costs discourage travelers from reunions with families.

D.People nowadays cherish reunion with their families more than before.

41.Which word can be used to best describe the way to solve the problem only by

increasing capacity?

A.Expensive

B. Effective

C. Hopeful

D. Impractical

42.What’s the tone of the whole passage?

A.Optimistic.

B. Objective

C. Subjective

D. Critical

D

We might not be alone in the universe. Actually, it may be confirmed as a very crowded place by new computer models developed to help identify habitable planets.

Estimates of places where life can exist have been based on the possibility of them having surface water. But software recently developed by the Aberdeen University allows researchers to identify planets with underground water kept liquid by heat from planets.

Water is fundamental for life and planets too close to the sun lose water to the atmosphere through evaporation. On the other hand, planets located in distant reaches from their star have their surface water locked away as ice.

Sean McMahon, who is carrying out the work, explained: "Traditionally people have said that if a planet is in this Goldilocks zone—not too hot and not too cold—then it can have liquid water on its surface and be habitable."

But this concept might change when considering that planets can receive two sources of heat—heat direct from the star and heat generated deep inside the planet.

It is easy to observe it in our own planet. As you go down through the crust (壳) of the Earth, the temperature gets higher and higher. Even when the surface is frozen, water can exist below ground.

There could be immense quantities of water in fact—full of primitive life.

Professor John Parnell, also from Aberdeen University said: "There is a significant habitat for microorganisms below the surface of the Earth, extending down several kilometres".

"And some believe that the majority of life on Earth could even reside in this deep biosphere."

So the Aberdeen team are developing models to predict which distant planets might harbour underground reservoirs of liquid water with the possibility of alien life.

43.What is considered as the symbol of life existence traditionally?

A. Solid water on its surface.

B. Solid water below ground.

C. Liquid water below ground.

D. Liquid water on its surface.

44.Why did John Parnell mention the fact about Earth?

A.To prove that there is majority of life on Earth.

B.To prove that life may also exist in other planets.

C.To prove that there is primitive life down through Earth.

D.To prove that there is a habitat for microorganisms below Earth.

45.What theory is the Aberdeen team’s study based on?

A.Planets can lose water through evaporation.

B.Planets can receive heat direct from the star.

C.Planets can have their surface water locked away as ice.

D.Planets can receive heat generated deep inside the planet.

46.What can we know about the computer models?

A.They will help identify planets where there is life.

B.They will help researchers find Goldilocks zones.

C.They have helped find some significant discoveries.

D.They have already located some habitats for life.

E

The NSA(美国国家安全局) and GCHQ(英国政府通讯总部) are tapping popular smart phone apps such as Angry Birds to gather the enormous amounts of very personal data those bits of software collect—including age, gender, marital status, income, education level and more, according to new reports from the New York Times and The Guardian.

Citing secret documents provided by Edward Snowden, former NSA staff, the reports detail efforts to gain data collection from cell phone carriers and smart phones by tapping into ―leaky‖(有漏洞的) apps themselves.

Both spy agencies showed a particular interest in Google Maps, which is accurate to within a few yards or better in some locations and would clearly pass along data about the area where phone owner is.

―It effectively means that anyone using Google Maps on a smartphone is working in support of a GCHQ system,‖ reads a secret 2008 report by the NSA's sister spy agency, according to the New York Times.

More surprising is the wide range of apps that the agencies search for data, including innocent-seeming apps such as Angry Birds. One document in particular from GCHQ listed what information can be found from which apps, mentioning Android apps but suggesting the same data was available from the iPhone platform.

Angry Birds maker Rovio Entertainment of Finland said it had no knowledge of any NSA or GCHQ programs for tapping into its users’ data.

"Rovio doesn't have any previous knowledge of this matter, and have not been aware of such activity in 3rd party advertising networks," said Saara Bergstrom. "Nor do we have any involvement with the organizations you mentioned."

Mobile photos uploaded to social media sites like Facebook and Twitter appear to be a particularly rich source of information for the spy agencies as well. Metadata in the photos is briefly available. The NSA and GCHQ are able to tap into that metadata to collect a wealth of key data points about a person’s life.

―NSA does not profile everyday Americans as it carries out its foreign intelligence mission,‖ the agency told the Times in response to questions about the program.

During a Monday press conference, White House press secretary Jay Carney stressed that same position. "As the president said in his Jan. 17 speech, to the extent data is collected by the NSA, through whatever means, we are not interested in the communications of people who are not valid foreign intelligence targets(情报目标)and we are not after the information of ordinary Americans," he said.

47. American and British spy agencies were both particularly interested in the information gathered from_________.

A. Google Maps

B. Twitter

C. Angry Birds

D. Facebook

48. According to the passage, which of the following is TRUE?

A. The iPhone platform is more reliable than that of Android.

B. The New York Times interviewed Edward Snowden secretly.

C. It is difficult for common users to protect their personal information.

D. A document from NSA listed what information can be found from which apps.

49. What did Jay Carney’s words imply?

A. NSA didn’t gather any worthy information from Americans.

B. NSA would stop its foreign intelligence mission in the future.

C. NSA and White House shared different attitude towards the affair.

D. NSA collected information with the permission of White House.

50. Which of the following can be the best title of the passage?

A. Angry Birds Give You Away

B. NSA Gather Information from Apps

C. Reports from the New York Times

D. Documents from Edward Snowden

第二节根据对话内容,从对话后的选项中选出能填入空白处的最佳选项,并在答题卡上将该项涂黑。选项中有两项多余选项。(共5小题;每小题2分,共10分)W: NET Company. Good morning. May I help you?

M: I am making the phone call to complain about the digital camera of your company. W: 51

M: The screen always gets black.

W: Could you tell me how long this has been happening?

M: 52

W: Then is the camera still under guarantee?

M: 53

W: You can bring it to our repair center to have it checked on first. 54

M: Then where is your repair center?

W: It’s on the 7th Floor, 1553 Palace Street.55

第一节阅读表达(共5小题;每小题2分,共10分)

阅读下面短文,并按照题目要求用英语问答问题(请注意问题后词数要求)。

It was a beautiful, sunny Saturday. I was going to meet an old university friend I hadn't seen for years, and was really excited to hear all his news.

My train was running a little late, but that was no big problem—I could text him to say I would be delayed. He would understand. But… where was my mobile phone? I had that familiar sinking feeling. Yes, I'd forgotten it at home.

No mobile phone. I'm sure I'm not alone in feeling anxious, on edge and worried when I don't have my phone with me. In fact, I know I'm not alone: two-thirds of us experience 'nomophobia', the fear of being out of mobile phone contact.

That's according to a study from 2012 which surveyed 1,000 people in the UK about their relationship with mobile phones.

It says we check our mobile phones 34 times a day, that women are more 'nomophobic' than men, and that 18-24 year-olds are the most likely to suffer fear of being without their mobiles: 77% of them say they are unable to be apart from their phones for more than a few minutes.

It's funny to think that around 20 years ago the only people with mobile phones would be businesspeople carrying their large, plastic 'bricks'.

Of course, these days, mobile phones are everywhere. A UN study from this year said mobile phone subscriptions would outnumber people across the world by the end of 2014.

And when there are more phones than people in the world, maybe it's time to ask who really is in charge? Are you in control of your phone, or does your phone control you?

So, what happened with my university friend? When I arrived a few minutes late he just laughed and said: "You haven't changed at all—still always late!" And we had a great afternoon catching up, full of jokes and stories, with no interruptions and no nagging desire to check my phone.

Not having it, I felt strangely liberated. Maybe I'll leave it at home on purpose next time.

56. What will most people suffer from when they don’t have phones with them?( One

word)

57. Who suffers most without their mobiles? (Within 5 words)

58. What was the situation like 20 years ago? (Within 5 words)

59. When are there more phones than people in the world? (Within 5 words)

60. Why will the author leave his mobile at home on purpose next time? (Within 8

words)

高2011级第六期3月阶段性考试英语试题

请在各题目的答题区域内作答,超出黑色矩形边框限定区域的答案无效

高2011级第六期3月阶段性考试英语试题参考答案单选答案:

1-5 AABCD 6-10 ADCAC

完型答案:

11-15 ACDDC 16-20 BACAD 21-25 CDABD 26-30 ABADB

阅读答案:

A:ACBB B:BCAD C:CBDB D:DBDA E: ACDA

补全对话:CABEG

阅读表达:

56.Nomophobia.

57.18-24 year-olds.

58.Only businesspeople carried mobile phones.

59.By the end of 2014.

60.Because he felt liberated without his mobile phone.

短文改错:

hold--- held my (last)----our (last) a---an (unforgettable) for后加which up--- on indicated---indicating Before---After event--- events impressively—impressive 去掉be

书面表达

Dear fellows,

I’m really glad to share my thoughts with you. I will give a brief description about my previous experience and offer some suggestions as well.

It was true that great changes took place since entering senior three. On one hand, I studied much harder since I knew time was limited. What made me excited was that I did make great progress after a period of full devotion to study. On the other hand, my life also changed a lot. To ensure energy and efficiency during the day, I made a more practical schedule and strictly follow it every day, which led to a more regulated life and really benefited me a lot.

As for my suggestions, the following tips may help. First of all, remember to persist whatever difficulty you meet. Besides, communicate more with your classmates, teachers and parents, from whom you can definitely gain support in all aspects.

Best wishes to all of you.

Yours,

Wang Lin.

七年级上册成都市树德实验中学数学期末试卷测试卷附答案

七年级上册成都市树德实验中学数学期末试卷测试卷附答案 一、初一数学上学期期末试卷解答题压轴题精选(难) 1.如图,O为直线AB上一点,∠BOC=α. (1)若α=40°,OD平分∠AOC,∠DOE=90°,如图(a)所示,求∠AOE的度数; (2)若∠AOD= ∠AOC,∠DOE=60°,如图(b)所示,请用α表示∠AOE的度数; (3)若∠AOD= ∠AOC,∠DOE= (n≥2,且n为正整数),如图(c)所示,请用α和n表示∠AOE的度数(直接写出结果). 【答案】(1)解:∵∠BOC=40°,OD平分∠AOC, ∴∠AOD=∠DOC=70°, ∵∠DOE=90°,则∠AOE=90°﹣70°=20° (2)解:设∠AOD=x,则∠DOC=2x,∠BOC=180﹣3x=α, 解得:x= , ∴∠AOE=60﹣x=60﹣ = (3)解:设∠AOD=x,则∠DOC=(n﹣1)x,∠BOC=180﹣nx=α, 解得:x= , ∴∠AOE= ﹣ = 【解析】【分析】(1)首先根据平角的定义,由∠AOC=∠AOB-∠BOC算出∠AOC的度 数,再根据角平分线的定义由∠AOD=∠DOC =∠AOC算出∠AOD的度数,最后根据∠AOE=∠DOE-∠AOD即可算出答案; (2)可以用设未知数的方法表示角的度数之间的关系,更加清晰明了,设∠AOD=x,则∠DOC=2x,∠BOC=180﹣3x=α,解方程表示出x的值,再根据∠AOE=∠DOE-∠AOD即可用a的式子表示出∠AOE; (3)用设未知数的方法表示角的度数之间的关系,更加清晰明了,设∠AOD=x,则∠DOC=(n﹣1)x,∠BOC=180﹣nx=α,解方程表示出x的值,再根据∠AOE=∠DOE-∠AOD即可用a的式子表示出∠AOE。

成都市树德实验中学数学轴对称填空选择单元测试卷附答案

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( ) A .11 B .13 C .11或13 D .9或15 5.如图,在Rt ABC ?中, 90,30,ACB A CD ??∠=∠=是斜边AB 上的高,2BD =,那么AD 的长为( ) A .2 B .4 C .6 D .8 6.等腰三角形两边长为2和4,则其周长为( ) A .8 B .10 C .8或10 D .12 7.北京有许多高校,下面四所高校校徽主体图案是轴对称图形的有( ) A .1个 B .2个 C .3个 D .4个 8.如图,AEC BED △△≌,点D 在AC 边上,AE 和BD 相交于点O ,若 30AED ∠=?,120∠=?BEC ,则ADB ∠的度数为( ) A .45° B .40° C .35° D .30° 9.如图,是一个 3×4 的网格(由 12 个小正方形组成,虚线交点称之格点)图中有一个三角形,三个顶点都在格点上,在网格中可以画出( )个与此三角形关于某直线对称的格点三角形. A .6 B .7 C .8 D .9 10.若a b c 、、是ABC 的边,且222()()()0,a b a c b c -+-+-=则ABC 是( ). A .锐角三角形 B .直角三角形 C .钝角三角形 D .等边三角形 11.如图,在锐角ABC 中,AB AC =,D ,E 是ABC 内的两点,AD 平分BAC ∠,60EBC E ∠=∠=,若6BE cm =,2DE cm =,则BC 的长度是( )

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【答案】21° 【解析】 根据三角形的外角性质以及角平分线的定义可得. 解:由题意得:∠E =∠ECD ?∠EBC = 12∠ACD ?12∠ABC =12 ∠A =21°. 故答案为21°. 3.一个等腰三角形的两边长分别为4cm 和9cm ,则它的周长为__cm . 【答案】22 【解析】 【分析】 底边可能是4,也可能是9,分类讨论,去掉不合条件的,然后可求周长. 【详解】 试题解析:①当腰是4cm ,底边是9cm 时:不满足三角形的三边关系,因此舍去. ②当底边是4cm ,腰长是9cm 时,能构成三角形,则其周长=4+9+9=22cm . 故填22. 【点睛】 本题考查了等腰三角形的性质和三角形的三边关系;已知没有明确腰和底边的题目一定要想到两种情况,分类进行讨论,还应验证各种情况是否能构成三角形进行解答. 4.如图,七边形ABCDEFG 中,AB ,ED 的延长线交于点O ,若l ∠,2∠,3∠,4∠的外角和等于210,则BOD ∠的度数为______. 【答案】30 【解析】 【分析】 由外角和内角的关系可求得∠1、∠2、∠3、∠4的和,由五边形内角和可求得五边形OAGFE 的内角和,则可求得∠BOD . 【详解】 1∠、2∠、3∠、4∠的外角的角度和为210,

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