【全国百强校首发】宁夏六盘山高级中学2017-2018学年高一下学期期末考试英语试题

宁夏六盘山高级中学2017-2018学年第二学期

高一期末测试卷

学科：英语测试时间：120分钟满分：150分命题人：吕晓雅

第Ⅰ卷（共90分）

第一部分：听力测试（共2节，满分30分）

第一节（共5小题；每小题1.5分，满分7.5分)

听下面5段对话。每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题。每段对话仅读一遍。

1. What does the woman want?

A. Fruit.

B. Tea.

C. Juice.

2. How did the man find his way home?

A. He got help from a friend.

B. He asked a policeman for help.

C. He found the way himself.

3. Where did the woman have lunch?

A. At her house.

B. At a cafe.

C. On a riverbank.

4. What will the man do next?

A. Tell the woman his plans.

B. Write a list for the woman.

C. Make a plan for himself.

5. What does the man think of the movie last night?

A. It is moving.

B. It is interesting.

C. It is disappointing.

第二节（共15小题；每小题1.5分，满分22.5分)

听下面5段对话或独白。每段对话或独白后有几个小题，从题中所给的A、B、C 三个选项中选出最佳选项，并标在试卷的相应位置。听每段对话或独白前，你将有时间阅读各个小题，每小题5秒钟；听完后，各小题将给出5秒钟的作答时间。每段对话或独白读两遍。

听第6段材料，回答第6、7题。

6. Why does the woman talk to the man?

A. To ask for his ticket.

B. To stop him from smoking.

C. To ask him to open a window.

7. Where does the conversation take place?

A. On a bus.

B. On a train.

C. In a restaurant.

听第7段材料，回答第8、9题。

8. How did the man feel about his trip?

A. Pleased.

B. Excited.

C. Frightened.

9. What happened to the man in the wildlife park?

A. He ran into a tree.

B. He was attacked by a lion.

C. He was run after by a tiger.

听第8段材料，回答第10至12题。

10. What are the speakers mainly talking about?

A. A dream.

B.A forest.

C. An accident.

11. How does the woman describe the light?

A. It was a blue light.

B. It got bigger and then smaller.

C. It looked like the face of a girl.

12. What happened to the woman when she tried to run away?

A. She fell down on the ground.

B. She saw an old man.

C. She couldn’t run fast.

听第9段材料，回答第13至16题。

13. Why did the woman go to China?

A. To do business.

B. To learn Chinese.

C. To get experience on tourism.

14. Who could the woman probably be?

A. A student.

B. A teacher.

C.A tour guide.

15. Where is the woman now?

A. In Australia.

B. In America.

C. In Canada.

16. What can we learn about the woman?

A. She worked as a hotel manager in China.

B. She had been in China for a year.

C. She learned a lot in China.

听第10段材料，回答第17至20题。

17. How old was Franklin when he became the printer of money?

A. 10.

B. 12.

C. 19.

18. What was Franklin like when he was a young man?

A. He was fat.

B. He had brown hair.

C. He was good-looking.

19. What did Franklin set up in America?

A. The first fire department.

B. The first college library.

C. The first glasses store.

20. What do we know about Franklin?

A. He had a great interest in science.

B. He rewrote the Declaration of Independence.

C. He started to work after graduating from school.

第二部分：阅读理解（共20小题，满分30分）

第一节：(共15小题；每小题1.5分，满分22.5分)

阅读下列短文，从每题所给的四个选项(A、B、C和D)中，选出最佳选项。

A.

Would you like to travel? Here is some advice for you.

Kingsway Hall Hotel

We offer quality service in Kingsway Hall Hotel. This location puts guests in easy reach of many places, such as the British Museum and Piccadilly Circus. Our hotel also has modern Western food, and offers a perfect dining environment. The lounge bar is a comfortable place to enjoy a drink while watching the tourists. There are hundreds of dining choices within walking distance. Non-smoking rooms are ready for guests.

Hilton Docklands Riverside

Located on the bank of the Thames, our hotel is about two miles east of Tower Bridge

and 36 miles from London Heathrow Airport. Our hotel has a beauty salon, a flower shop and a swimming pool. The hotel also offers laundry(洗衣店)services, babysitting, shining shoes, and local area transportation.

Windermere Hotel

Located in the center of London, our hotel puts guests within easy reach of London’s well-known buildings. Buckingham Palace and the Royal Parks are just a short walk away. Within 1.5 miles you can visit Westminster Abbey and the Houses of Parliament. The theatres, Harrods shopping centre, and the designer shops of Sloane Square and Knightsbridge are all only a short walk away or a taxi ride away.

21. What does Kingsway Hall Hotel provide for its guests?

A. Chinese food.

B. Smoking rooms.

C. A lounge bar.

D. A swimming pool.

22. Which is true about Hilton Docklands Riverside?

A. It has delicious food.

B. It offers a reasonable price.

C. It offers different kinds of service.

D. It has convenient transport.

23. This passage is most likely to be found in _____.

A. a storybook

B. a travel guide

C. a technical report

D. a geography magazine

B.

Mr. and Mrs. Gordon were sitting on the sand, reading their magazines. Mr. Gordon was too stingy (吝啬的) to rent (租) a chair. Their twelve-year-old daughter, Sandra, was playing at the water’s edge. Suddenly a huge wave lifted S andra up and carried her out to sea. Fortunately, a lifeguard (救生员) was on duty and he saw the wave carry Sandra away. He ran along the beach and dived into the sea. He swam quickly to where the girl was, with her head only just above the water, was shouting for help. She was very frightened. When the lifeguard reached her, she struggled with him, as drowning people often did. However, he was a skillful lifeguard and quickly took hold of her and swam with her back to the beach. By the time he reached it, Mr. and Mrs. Gordon had realized what had happened. They had run down to the

water’s edge. Neither of them could swim. They just stood in the shallow water, and worried about their daughter. Had the lifeguard reached her in time? Fortunately, he had. “That w as quick work, young man,” Mr. Gordon said. He turned to his wife, “Give the lifeguard a dollar.” “A dollar!” Sandra cried. “Dad, how can you give him a dollar! He saved my life. I was half dead.” “Quite right, girl,”Mr. Gordon said, pleased by his daughter’s awareness of the value of money. He turned to his wife again and said, “She’s right. She was only half dead. Give him fifty cents.”

24. What would probably have happened to Sandra if the lifeguard had not been on the beach?

A. Her father would have saved her.

B. Her mother would have saved her.

C. She would have swum back to the beach.

D. She would have been drowned.

25. What did Mr. and Mrs. Gordon do when Sandra was carried out to sea by the wave?

A. They shouted to the lifeguard.

B. They dived into the water.

C. Perhaps they were reading magazines.

D. They offered the lifeguard money to save Sandra.

26. Why was Sandra angry with her father?

A. He did not give the lifeguard any money.

B. He did not swim out to save her.

C. He did not show the lifeguard hearty thankfulness.

D. He gave the lifeguard too much money.

27. Why was Mr. Gordon pleased with her daughter?

A. She was safe again.

B. She was polite to the lifeguard.

C. He thought she did not want him to give the lifeguard too much money.

D. She gave the lifeguard fifty cents.

C.

You’re in a department store and you see a couple of attractive young women looking at a sweater. You listen to their conversation: “I can’t believe it—Lorenzo Bertolla! They are almost impossible to find. Isn’t it beautiful? And it’s a lot cheaper than the one Sara bought in Rome.”

They leave and you go over to see this incredible sweater. It’s nice and the price is right. You’ve never heard of the brand of Lorenzo Bertolla, but those girls looked really stylish. Their clothes follow the fashion. They must know. So, you buy it. You never realize that those young women are employees of an advertising agency. They are actually paid to go from store to store, talking loudly about Lorenzo Bertolla clothes to be heard by others.

Every day we notice what people are wearing, driving and eating. If the person looks cool, the product seems cool, too. This is the secret of undercover marketing. Companies from Ford to Nike are starting to use it.

Undercover marketing is important because it reaches people that don’t pay attention to traditional advertising. This is particularly true of the MTV generation-consumers between the age of 18 and 34.It’s a golden group. They have a lot of money to spend, but they don’t trust ads.

So advertising agencies hire young actors to “perform” in bars and other places where young adults go. Some people might call this practice misleading, but marketing executive Jonathan Ressler calls it creative. “Look at traditional advertising. Its effectiveness is decr easing.” It is true, because everyone knows an ad is trying to persuade you to buy something. However, you don’t know when a conversation you overhear is just a performance.

28. The two attractive young women were talking so as to __________.

A. get the sweater at a lower price

B. be heard by people around

C. be admired by other shoppers

D. decide on buying the sweater

29. What is the meaning of the underlined word “stylish” in the passage? ________.

A. out of date

B. convenient

C. ancient

D. fashionable

30. What can we infer from the passage?

A. Traditional advertising will soon disappear in the market.

B. The MTV generation tends to be more easily influenced by all kinds of ads.

C. That traditional advertising is too direct may lead to its decreasing effectiveness.

D. Undercover marketing will surely be banned soon by the government.

31. Which of the following would be the best title for the passage?

A. Two Attractive Shoppers.

B. Lorenzo Bertolla Sweaters.

C. Undercover Marketing.

D. Ways of Advertising.

D.

One of the simplest and the most effective forms of communication involves nothing more than the movement of facial muscles. What am I talking about? Smiling! Everyone understands what a smile means, and everyone also understands what a frown means. In fact, these two basic facial expressions can be recognized across countries, across the world and across the globe, regardless of the language spoken or the culture lived in.

Moreover, hugs are so beautiful! When you give someone a hug or someone comes up and gives you a hug, this simple act of a hug can “speak” volumes about how much you care for the other person, how much love you want to share with the other person, how much you have missed the other person. This hug has so much to say, and yet there never has to be any words spoken.

And, who needs to say the words “yes” or “no” when a movement of the head says the same thing. These basic examples show just how powerful body language can be. Just knowing how to read and use body language effectively, makes it really easy to see why it is not always a bad thing to be lost for words.

Body language in the world of love is a very common thing and sometimes the only thing. And, most of the time, body language is the very first words “spoken” before any words are. The old saying is “love at first sight”, not “love at first word”. Across a crowded room, their eyes meet and linger, he winks at her, and she raises an eyebrow. The connection is made without any words needed. These displays of body language say it all. In fact, sometimes they can say more than words can.

32. How many kinds of body language are mentioned in the first two paragraphs?

A. Two.

B. Three.

C. Four.

D. Five.

33. The author thinks it isn't a bad thing to be lost for words because________.

A. silence is usually better than words

B. body language can save much time

C. body language can be more effective

D. too many words may bring some trouble

34. The last paragraph talks about body language used________.

A. between two people in love

B. between two good friends

C. between family members

D. between close relatives

35. Which word can best describe body language according to the passage?

A. Necessary.

B. Important.

C. Wonderful.

D. Powerful.

第二节（共5小题；每小题1.5分，满分7.5分）

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

We all know it is not always so easy to be happy. We also know how stressed (有压力的) you are, with homework, exams, sports meetings and extra outdoor activities, let alone trying to have a life outside school. 36 .

Exercise

Physical activity produces all sorts of things which help us to relax and feel good. Exercise can also make us feel more confident, which certainly makes us happi er. You don’t have to be a future Olympian. 37 If you hate P.E., find something less competitive: go for a walk, dance around your room or hit a park.

Thankfulness

It is easy to take the good thing in life without thinking about them or showing y ou’re thankful. 38 An easy way to do this is to make a list before bed of five things you’re thankful for. They can be big things, like your family and friends, or little things, like a good hair day.

Laugh

___39 But research has shown that a good laugh reduces stress and, even if you start by forcing yourself to laugh, improves how you feel.

Sleep

Get enough ZZZs. 40 Not getting enough sleep makes you angry and sad, so leave your phone outside your room, turn off the lights and let yourself have a good sleep. Sweet dreams!

A. Teens especially need at least eight hours of sleep.

B. If you’re feeling blue, know that you’re not alone.

C. You can increase happiness if you exercise with a friend,

D. So here are our top tips on being happy and staying happy.

E. Everyone can get something good from moving a little bit.

F. But studies have shown that giving thanks can make you happier,

G. Some days, laughing is just about the last thing you feel like doing.

第三部分：英语知识运用（共四节，满分60分）

第一节：完形填空（共20小题；每小题1.5分，满分30分）

阅读下面短文，掌握其大意，然后从各题所给出的A、B、C和D项中，选出最佳选项，并在答题卡上将该项涂黑。

When I was a young boy, my family was very poor. I would often help do something for the neighbors to 41 a little pocket money.

One day I 42 on the door of an elderly woman and asked 43 she needed me to clean the yard. She asked why I was not in 44 and I showed her my worn 45 , which no longer kept me warm. She 46 me to work in the yard. When I finished, she looked at me and said, “I su ppose you want to be 47 now.” She then 48 a jar filled with dollar bills and said, “I’m glad you’ve done a 49 job today but that is not something you should be doing again. I want you to 50 new clothes and get back to school. I also want you to come back to 51 me with your report card and I will 52 you when I see you have worked hard and have some good 53 . Now reach out your little hands and take out as much 54 as you can.”

I put my hands in the jar and 55 so much money that it was 56 for me to buy what I badly needed. Later, I returned several times to see the woman and she did just as she 57 . She looked at my report card and gave me a handful of dollars and some delicious food every time I 58 her that I had a n “A”.

I was twelve years old when I moved from that neighborhood. I will never forget the huge 59 this wonderful lady made over my life with her 60 . This is something I hope to do myself in this lifetime over and over again.

41. A. save B. give C. earn D. change

42. A. turned B. knocked C. worked D. looked

43. A. how B. when C. why D. if

44. A. school B. time C. trouble D. bed

45. A. bag B. carpet C. coat D. sofa

46. A. allowed B. forced C. helped D. stopped

47. A. punished B. tested C. praised D. paid

48. A. set up B. took out C. talked about D. put away

49. A. boring B. new C. fine D. terrible

50. A. keep B. buy C. remove D. make

51. A. visit B. forgive C. welcome D. serve

52. A. recognize B. reward C. understand D. protect

53. A. goals B. stories C. marks D. ideas

54. A. room B. money C. food D. time

55. A. grabbed B. lost C. borrowed D. charged

56. A. rare B. enough C. simple D. special

57. A. promised B. discovered C. knew D. admitted

58. A. asked B. required C. showed D. wrote

59. A. decision B. progress C. mistake D. difference

60. A. courage B. kindness C. honesty D. happiness

第II 卷（共60分）

第二节（共10小题；每小题1分，满分10分）

阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。

As victor Hugo once said, “61__________(laugh) is the sun that drives winter from the human face”, and up to now nobody has been able to do this 62_______(we ll) than Charlie Chaplin. He 63___________(bright) the lives of Americans and British through two world wars and the hard years in between. He made people laugh at a time when they felt depressed, so they could feel more content 64_______ their lives. No one was ever bored watching him—his subtle acting made everything 65___________(entertain). As time

66________(go) by, he began making films. He grew more and more popular as his charming character, the little tramp, became known throughout the world. He walked around stiffly

67__________(carry) a walking stick. This character was 68_____ social failure but was loved for his optimism and determination to overcome all 69__________(difficult). Charlie Chaplin wrote, directed and produced the films he starred in. In 1972 he was given a special Oscar for his outstanding work in films. He is loved and remembered as a great actor

70________ could inspire people with great confidence.

第三节词汇填空（共10小题；每小题1分，满分10分）

一．单词拼写。根据下列句子及所缺单词的首字母或汉语意思，写出单词的正确形式。（共5小题，每小题1分，满分5分）

71. They took out their arms in d__________ of their country.

72. With the summer a__________, it’s getting hotter and hotter.

73. She tried her best to _________(使信服) us of her honesty and innocence.

74. Local people have _________(反应) angrily to the news.

75. She ___________ (克服) injury to win Olympic gold medal.

二．短语填空。根据所给句子的意思，从方框中选出短语，用其正确形式完成句子。其中两项多余。（共5小题，每小题1分，满分5分）

76. _______, the northerners are keen on dumplings while the southerners are fond of rice.

77. Don’t ________________ me when I’m speaking to you.

78. Mark Twain __________________ his novels internationally.

79. See if you can _______ me ______ in this photo.

80. They were __________ for not paying their phone bill.

第四节句子翻译。（共5小题，每题2分，满分10分）

81.他由于被人发现而感到非常吃惊,以至于都没有企图逃跑。

82.他发现酒吧间的门被椅子堵上了，家具也被挪动过。

83.我总算有可能告诉他，他拔错了牙。

84.那年经人直到床撞到地上才醒了过来。

85.我坐在汽车的前部，以便饱览农村风光。

第四部分：写作（共两节，满分30分）

第一节：短文改错（共10小题；每小题1分，满分10分）

假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下便条。便条中共有10处错误，每句中最多有两处。错误涉及一个单词的增加，删除或修改。

增加：在缺词处加一个漏词符号（︿），并在其下面写出该加的词。删除；把多余的词用斜线（\ ）划掉。修改：在错的词下划一横线，并在该词下面写出修改后的词。注意：1.每处错误及修改均仅限一词； 2.只允许修改10处，多者（从第11处起）不计分。

In my school life, a most unforgettable person is my math teacher. Not only did she helped us in class but also after class. I still remember the time that I got a “B” in the final exam. I liked math best and the teacher took pride in me all the time. However, I failed. I felt so disappointing that I lost my energy and patience. Then one day, I happened meet her in the street, and my face turned red right away. She told me not to give up and encourage me to work much more harder. Later, he offered me a great many suggestion on learning math. In addition, she cared for my feelings. Under her help, I made great progress.

第二节：书面表达（满分20分）

假定你是李华，你的美国笔友Jack不久前跟随父母来到中国求学。最近他因考试成绩不理想而感到沮丧，甚至想放弃学习。请你用英语给他写一封信，內容包括：

1. 表示安慰；

2. 你的看法及建议。

注意：1.词数100左右（开头已给出，但不计入总数）2.可适当增加细节，以使行文连贯。

Dear Jack,

I learnt from your last letter that___________________________________________ _________________________________________________________________________ _________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ _____________________________________________________________________

2017-2018第二学期高一英语期末试卷答案

一、听力

1-5 BBCAC 6-10 BACAA 11-15 BCCAB 16-20 CCBAA

二、阅读理解

21-23 CCB 24-27 DCCC 28-31 BDCC 32-35 BCAD 36-40 DEFGA

三、完形填空

41-45 CBDAC 46-50 ADBCB 51-55 ABCBA 56-60 BACDB

四、语法填空

61. Laughter 62. better 63. brightened 64. with 65. entertaining

66. went 67. carrying 68. a 69. difficulties 70. who/that

五、词汇填空

71. defence 72. approaching 73. convince 74. reacted 75. overcame

76.In general, 77. turn your back to 78. is famous for 79. pick up 80. cut off

六、句子翻译

81. He was so surprised at being discovered that he did not even try to run away.

82. He found that the doors had been blocked by chairs and the furniture had been moved.

83. I was able to tell him that he had pulled out the wrong tooth.

84. The young man did not wake up until the bed had struck the ground.

85. I sat in the front of the bus to get a good view of the countryside.

七、改错

In my school life, a most unforgettable person is my math teacher. Not only did she helped us in class but also

the help

after class. I still remember the time that I got a “B” in the final exam. I liked math best and the teacher

took when

pride in me all the time. However, I failed. I felt so disappointing that I lost my energy and patience. Then one

disappointed

day, I happened^ meet her in the street, and my face turned red right away. She told me not to give up and

to

encourage me to work much more ( \去掉) harder. Later, he offered me a great many suggestion on learning

encouraged She suggestions

math. In addition, she cared for my feelings. Under her help, I made great progress.

With

八、书面表达

范文：

Dear Jack,

I learnt from your last letter that you’re feeling upset recently because you haven’t performed well in the exams and that you even want to give up studying.

It is natural to feel upset after exams if we don’t perform well enough. To solve this problem, I think it’s important to develop the right attitude towards exams. After all, they’re only a means of checking how we’re getting on with our lessons, so there’s no need to care too much about grades. The most important thing is to analyze the cause of the failure and look for proper solutions.

Remember that failure can be a learning experience and an opportunity for a fresh start.

Best wishes!

Yours,

Li Hua

宁夏银川市第一中学2019-2020学年高一期末考试数学试卷

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2019年宁夏银川一中高三第一次模拟考试数学【理】试题及答案

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A.土壤温度 B.土壤墒情 C.土壤肥力 D.土壤紧实度 4.最适宜推广旱作蔬菜全膜双垄三沟集雨沟播技术的地区是 A.广东 B.云南 C.湖北 D.陕西 5.影响上述两种蔬菜栽培技术地域差异的主要因素是 A.光照 B.热量 C.水分 D.土壤 南亚的印度河流域干旱频繁，水资源不稳定，对农业生产影响较大。下图示意印度河流域。据此完成6～8题。 6.印度河下游支流少的主要原因是下游区域 A.地势较低平 B.泥沙淤积强 C.流域面积小 D.气候较干旱 7.印度河流域即使处于湿季依然干旱频发，主要是因为 A.冰雪融水少 B.降水变率大 C.植物蒸腾强 D.降水总量少 8.印度河中游地区从甲处调水到乙处的主要目的是 A.增加灌溉面积 B.改善航运条件 C.减轻洪涝灾害 D.发展淡水养殖 融雪漏斗是指积雪在消融时，以植物主干为中心先开始融化，形成的漏斗状融洞。融雪漏斗的形成与土壤中有机质含量相关，土壤有机质含量的增加，土壤的保温能力也随之提高。下图为我国某地的胡杨树周围融雪漏斗地表形状图，融雪漏斗的延伸方向与林冠的生长方向相同。据此完成9～11题。

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8．已知等比数列{}n a 中，各项都是正数，且2312,2 1 ,a a a 成等差数列，则8 967a a a a ++等于 A.21+ B.21- C.223+ D.223- 9．某班设计了一个八边形的班徽（如图），它由腰长为1，顶角为α的四个等腰三角形，及其底边 构成的正方形所组成，该八边形的面积为 A ．2sin 2cos 2αα-+ B ．sin 3αα+ C ．3sin 1αα+ D ．2sin cos 1αα-+ 10．函数)0)(sin(3)(>+= ω?ωx x f 部分图象 如图所示,若2 ||AB BC AB =?,则ω等于 A ． 3π B ．4π C ．6 π D ．12π 11．已知函数()x f 是R 上的偶函数，且在区间[)+∞,0上是增函数.令 ??? ? ? =??? ??=??? ??=75tan ,75cos ,72sin πππf c f b f a ，则 A ．c a b << B. a b c << C. a c b << D. c b a << 12．定义域为[,a b ]的函数()y f x =图像的两个端点为A 、B ，M(x ，y )是()f x 图象上任意一点，其 中[]1,0,)1(∈-+=λλλb a x ．已知向量()OB OA ON λλ-+=1，若不等式k ≤||恒成立，则称函数f (x )在[a ，b ]上“k 阶线性近似”．若函数x x y 1 -=在 [1，2]上“k 阶线性近似”，则实数k 的取值范围为 A. [0,)+∞ B. 1[ ,)12+∞ C. 3[)2+∞ D. 3 [)2 +∞ 第Ⅱ卷 本卷包括必考题和选考题两部分．第13题～第21题为必考题，每个试题考生都必须做答．第22题～第24题为选考题，考生根据要求做答． 二、填空题：本大题共4小题，每小题5分． 13．已知函数)(',sin cos )(')(x f x x f x f +=π是)(x f 的导函数，则 ? π )(dx x f = 。 14．在ABC ?中，BC =52，AC =2，ABC ?的面积为4，则AB 的长为 。

宁夏银川一中2019届高三第一次模拟考试数学(理)

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宁夏银川一中2018-2019学年高一上学期期中考试数学试卷 Word版含解析

银川一中2018—2019学年度(上)高一期中考试 数学试题 一、选择题：本大题共12个小题,每小题5分,共60分.在每小题给出的四个选项中，只有一项是符合题目要求的. 1.设集合，，则（） A. B. C. D. 【答案】A 【解析】 【分析】 利用补集的定义求出集合B的补集，利用交集的定义求出． 【详解】∵，， ∴={﹣1，2} ∵， ∴ 故选：A． 【点睛】求集合的交、并、补时，一般先化简集合，再由交、并、补的定义求解；在进行集合的运算时要尽可能地借助Venn图和数轴使抽象问题直观化．一般地，集合元素离散时用Venn图表示；集合元素连续时用数轴表示，用数轴表示时要注意端点值的取舍． 2.函数的定义域是（） A. B. C. D. 【答案】B 【解析】 【分析】 由对数式的真数大于0，分式的分母不为0联立不等式组求解． 【详解】由解，得x＞0且x≠1． ∴函数f（x）=+lgx的定义域是（0，1）∪（1，+∞）． 故选：B．

【点睛】常见基本初等函数定义域的基本要求 (1)分式函数中分母不等于零． (2)偶次根式函数的被开方式大于或等于0. (3)一次函数、二次函数的定义域均为R. (4)y＝x0的定义域是{x|x≠0}． (5)y＝a x(a>0且a≠1)，y＝sin x，y＝cos x的定义域均为R. (6)y＝log a x(a>0且a≠1)的定义域为(0，＋∞)． 3.函数在区间上的最小值是（） A. B. C. -2 D. 2 【答案】B 【解析】 【分析】 直接利用函数的单调性，求出函数闭区间上的最小值即可． 【详解】函数f（x）=（）x在区间[﹣1，1]上是减函数， 所以函数的最小值为：f（1）=． 故选：B． 【点睛】本题考查指数函数的单调性的应用，基本知识的考查． 4.下列函数中，在区间上单调递减的函数是（） A. B. C. D. 【答案】D 【解析】 【分析】 分析给定四个函数在区间（0，+∞）上的单调性，可得结论． 【详解】函数y=log2x在区间（0，+∞）上单调递增，不符合题意；函数y=在区间（0，+∞）上单调递增，不符合题意； 函数y=|x|在区间（0，+∞）上单调递增，不符合题意； 函数y=在区间（0，+∞）上单调递减，符合题意； 故选：D．

2020年宁夏银川一中高考数学一模试卷(文科)

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