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成都七中育才学校2018 届下期入学考试英语试题

成都七中育才学校2018 届下期入学考试英语试题
成都七中育才学校2018 届下期入学考试英语试题

成都七中育才学校2017-2018学年度上期

九年级下期入学英语测试试卷

注意事项:

1.全卷分A卷和B卷,A卷满分65分,B卷满分35分;考试时间90分钟。

2.在做答前,考生务必将自己的姓名、准考证号涂写在试卷和答题卡规定的地

方。考试结束,监考人员将试卷和答题卡一并收回。

3.选择题部分必须使用2B铅笔填涂,非选择题部分必须使用0.5毫米黑色的签

字笔书写,字体工整、笔迹清楚。

4.请按照题号在答题卡上各题目对应的答题区域内作答,超出答题区域书写的

答案无效;在草稿纸、试卷上答题无效。

5.保持答题卡清洁,不得折叠、污染、破损等。

A卷(65分)

第一部分听力部分(共30小题,计分30分)

一、听句子,根据所听到的内容选择正确答语。每小题念两遍。(共5小题,每小题1分;计5分)

1. A.Beautiful lanterns. B.Sweet dumplings. C.Mooncakes.

2. A.In1876. B.In America. C.By Bell.

3. A.Shake hands. B.Bow. C.Kiss.

4. A.No,I don’t. B.Yes,he is. C.No,he didn’t.

5. A.No,I don’t know the way. B.Sure.Go straight ahead.

C.Yes,but I’m not available.

二、听句子,选择与所听句子内容相符合的图片,并将代表图片的字母填在相应位置。每

小题念两遍。(共5小题,每小题1分;计5分)

A. B. C. D. E.

6._________

7._________

8._________

9._________10._________

三、听对话,根据对话内容及问题选择正确的答案。每小题念两遍。(共10小题,每小题1分;计10分)

11.A.Cartoons. B.Coco. C.Moving.

12.A.Korea. B.Three years. C.Korean customs.

13.A.At3:30. B.At4:00. C.At4:20.

14.A.Do some cooking. B.Go for a drive. C.Stay at home alone.

15.A.Miss Li B.The girl C.Mr.Liu

16.A.Because she was upset. B.Because she wanted to be beautiful.

C.Because her mother was angry.

17.A.A staff worker. B.A tourist. C.A tour guide.

18.A.Blue. B.Red. C.White.

19.A.35yuan. B.45yuan C.55yuan.

20.A.At school. B.At the bus stop. C.At home.

四、听短文,根据短文内容选择正确答案。短文念两遍。(共5小题,每小题1分;计5分)

21.Where did the Lincoln family live?

A.in the forest

B.on a farm

C.in the city

22.How did Lincoln get to school?

A.By bus.

B.By bike.

C.On foot.

23.What did he use to do after working all day?

A.He used to study.

B.He used to make a fire.

C.He used to buy a light.

24.He was elected(选举)President of the United States because he was________.

A.strong enough

B.wise and good

C.knowledgeable

25.Which side won the war and saved the slaves(奴隶)in the end in America?

A.The South

B.The North

C.The English army

五、听短文,根据短文内容完成表格中所缺信息,并将答案填写在相应位置。短文念三遍。

(共5小题,每小题1分;计5分)

Title:Saving

The meaning of saving When smart people get money,they’ll26.

The reason for saving It’s for27a rainy day.

28about saving 1.You need to buy a new one when someone takes your bike.

2.In the same month,you need money for your best friend’s birthday as well as29and a great concert.

3.You also need to build your savings for a long time for

30,like a new smartphone or going to college.

第二部分基础知识运用(共20小题,计分20分)

六、从以下各题的A、B、C三个选项中选择正确答案。(共10小题,每小题1分;计10分)

31.—Is_________English dictionary yours,Tom?

—No,I don’t have________English dictionary,thank you very much.

A.the;a

B.an;an

C.the;an

32.Everyone makes mistakes in life.The key is not to repeat________again.

A.them

B.him

C.that

33.—Lucy,could you take out the trash?—Yes,I_________.I’m coming,mom.

A.could

B.can

C.must

34.When you’re learning English,use it,_________you’ll lose it.

A.so

B.and

C.or

35.—Sorry,I haven’t finished my report yet.—You’d better hurry up.It________in tomorrow.

A.may be handed

B.must be handed

C.can hand

36.The lights in the classroom are still on.There must be________studying there.

A.anybody

B.somebody

C.nobody

37.—Lily,it’s Sunday today.Why don’t you go skating with them?

—Because I________my homework yet.

A.didn’t finish

B.haven’t finished

C.will finish

38.—What do you think is important for the players on a team?

—It’s to play together and________the best in each other.

A.look up

B.show up

C.bring out

39.—Have you found any information about famous female directors________you can use in class?

—Not yet.I’ll search some on the Internet.

A.that

B.who

C.those

40.—Could you please tell me_________?—I went there with my parents.

A.where you went for your vacation

B.how you had a good trip

C.whom you went to the mountain with

七、完型填空。阅读下面短文,根据短文内容,从A、B、C三个选项中选出可以填入空白处的正确答案。(共10小题,每小题1分;计10分)

It was a winter morning in Beijing,and the weather was very cold that day.I was on my way to work and wanted to eat something to41.

There was an old woman selling youtiao and doujiang(soybean milk)on the sidewalk.I42 her cart(手推车)on my way to the subway station.The youtiao smelled good and looked delicious.I asked her43they cost and was surprised at how cheap they were.

As soon as I tried the youtiao,it reminded me of the doughnuts(甜甜圈)I44to eat back in my home country,the United States.It was a little salty,a little sweet,and very45.After that day, I ate youtiao every morning on my way to work.

Youtiao is liked by foreigners.Probably because it’s similar to some other foods that are popular in foreign countries.In the US,46have a kind of food called the cruller(油饼).It’s a type of doughnut,or fried dough(油炸面团).It has a long and thin shape like youtiao.There is a Spanish food that is also very47youtiao.It is called the churro.

Some people outside of China eat youtiao as well.People in Malaysia and Vietnam eat it,48. They will often eat it with milk tea or noodles.In Indonesia,they eat it with porridge.

By itself,youtiao is pretty good.But it can be even49if you add some other things to it. Chocolate sauce or powdered sugar can give it a new flavor.I like to eat it with coffee or tea as well.It is one of my favorite50snacks.

41.A.warm me up B.pick me up C.lift me up

42.A.looked for B.passed by C.cleaned up

43.A.how often B.how many C.how much

44.A.planned https://www.doczj.com/doc/8a17625044.html,ed C.had

45.A.delicious B.awful C.spicy

46.A.you B.they C.we

47.A.similar to B.different from C.angry with

48.A.without doubt B.at first C.for example

49.A.better B.sweeter C.worse

50.A.Spanish B.Chinese C.American

第三部分阅读理解(共15小题,计分15分)

八、阅读下面短文,根据短文内容判断句子正误。正确的涂”A”,错误的涂”B”。(共5小题,每小

题1分;计5分)

Sydni Dion Bennett didn’t want to be anyone else when she was a little girl.She lives by the words“Be yourself.Everyone else is already taken.”

The16-year-old is the first African-American to win Miss Illinois Teen

USA in the contest’s34-year history.

Before the contest,she didn’t know that a black girl had never won.

“I found out the night before the final show,actually.It made me want to fight harder and to win for all the black girls around,not just for myself,”Bennett said.“I didn’t feel less about my ability to win because no black girl had done it.It gave me much encouragement rather than a doubt.”

Bennett wants other African-American girls to know they can do great things just like her.In fact, her life experiences prepared her for the big day all along.As a coach at a dance studio,she has the confidence of a talented wise woman.

During the contest,Bennett talked to the judges(评委)and audience about her work teaching kids.That was easy for her,because it’s her everyday life.

“I think a lot of girls go[to the contest]feeling like they have to make the judges think they’re somebody they’re not,”Bennett said.“But I went with‘I’m me;this is who I am.’I think that’s the thing that makes me different from the others,being honest and sincere.”

51.Sydni Dion Bennett is a16-year-old student in the United States.

52.Sydni Dion Bennett was the youngest black girl to win Miss Illinois Teen USA in the contest’s history.

53.Sydni Dion Bennett is always confident before and during the contest.

54.The judges(评委)and audience didn’t think her work teaching kids is true.

55.Sydni Dion Bennett’s life experiences and honesty help her win Miss Illinois Teen USA.

九、阅读下列两篇短文,根据短文内容选择正确答案。(共10小题,每小题1分,计10分)

A

56.Tourists can get the information about Sunset Island________.

A.every Sunday

B.every day

C.from Monday to Saturday

57.Sally likes to go out at night,and enjoys meeting people and dancing.She can have fun_______.

A.on Lighthouse Island

B.in the clubs for Port George

C.in Port George Museum

58.What time does Port George Museum open?

A.At four o’clock in the morning.

B.At nine o’clock in the morning.

C.At ten o’clock in the morning.

59.Tourists can do the following things except________.

A.learning the history about Sunset Island

B.taking pictures of wild animals

C.enjoying American food at the Victoria Restaurant

60.Which statement is NOT TRUE according to the poster?

A.The clubs usually close at four o’clock in the morning.

B.Tourists can’t take a boat trip there.

C.If you want to climb Rose Mountains and enjoy great views,the22bus can help you get there.

B

Gulangyu,a beautiful island,was successfully listed in the UNESCO World Heritage(世界文化遗产)on July8th,2017.It’s not only the pride of my hometown,but also the pride of the whole nation.

Gulangyu is separated from Xiamen by the500-meter-wide Egret River(鹭江),with an area of 1.88square kilometers.It’s like a garden on the water.You can go there only by ship.Cars,buses and bikes are not allowed to run on the island.It is so quiet that wherever you go,you can hear the sound of playing the piano.As a result of this,it is called“the island of music”.

The first name of the island was Yuanzhouzi.In the Ming Dynasty it was changed as Gulangyu, meaning“drum waves”,because the holes in the south western reefs hit by the waves make sounds like the drum beating.

Today,Gulangyu is listed as one of the nation’s major traveling places.Gangzihou Bathing Beach and Memorial Hall to Zheng Chenggong are visited by millions of people from all parts of the country and the world.Today,931historical buildings and gardens in different styles remain.The buildings and food are especially popular with visitors.

As a popular tourism destination(目的地),Gulangyu has had problems with crowding.I hope our government can do something so that we can better study and protect the historical heritage on the island.Encouraging more local people to take part in the protection will be a great way.

61.Where does the writer come from?

A.Sichuan Province.

B.Fujian Province

C.Beijing

62.Which of the following is NOT TRUE according to the passage?

A.Gulangyu is famous as“the island of music”and“a garden on the water”.

B.The area of Gulangyu is less than2square kilometers.

C.Gulangyu got its name in Tang Dynasty.

63.The underlined word“reefs”in Paragraph3probably means________in Chinese.

A.屋顶

B.暗礁

C.建筑

64.What can we learn from the passage?

A.Gulangyu is a popular traveling place around the world.

B.Visitors have different ways to get on the island,but taking a ship is the most convenient way.

C.We can see391different historical buildings and gardens in Gulangyu today.

65.The passage may be from___________.

A.a poster

B.a guide book

C.a blog(博客)

B卷(35分)

一、根据句意和首字母补全单词。(共5小题,每小题1分,计5分)

1.Although there was a long line standing in front of Mary to buy the soccer tickets,she waited p____________without saying anything.

2.It’s a great c____________to have the school so near.I can walk to school for only five minutes.

3.It is Yao Ming who makes the kids in China like basketball and it’s also Yao Ming who makes the kids know what a real p_____________basketball player should be like.

4.After Cindy had a long talk with her coach,a smile s_____________slowly across her face.

5.As soon as the baby fell asleep,the mom l_____________him gently on the bed.

二、完成对话。在对话空格中填上适当的单词,使对话完整正确;一空一词(含缩写词)。(共10小题,每小题1分;计10分。)

A:Hey,Crystal.Did you see the talent show Trump Card on Zhengjiang TV last Friday?

B:Oh,yes,Tim.I was greatly moved to see the reunion(团聚)of the cast(剧组)from TV drama Journey to the West.

A:So did I.This TV drama was first on TV in1980s and soon became a classic in China and is still being1by people today.They say many great words for its wonderful stories and fantastic performances of all the actors.

B:I remember I used to jump up and down in2the minute I heard the music of the TV drama. A:Ha-ha...But it’s a pity that some of the actors and staff workers have passed away because of terrible illness,3the director Yang Jie who died last year.

B:I’m sorry to hear that.But don’t be too sad.They are forever in people’s heart.

A:I totally agree with you.By the way,can you remember who played the Monkey King?

B:Sure.Liu Xiao Ling Tong.But I always4why he has such a strange name.

A:Let me tell you.Actually,Liu Xiao Ling Tong is his stage name.His real name is Zhang Jinlai.

B:I can hardly5his stage name with his real name.Are there any relationships between the two names?

A:In fact,no.His stage name comes from his father’s stage name Liu Lin Tong which means that his father began to learn arts at the age of six.

B:Well,I get it.

A:And you know what.It’s6that he has two ID cards with these two names.

B:Yes,it’s really hard to believe.7,people can only have one ID card.

A:That’s true.But because his ID card with his real name Zhang Jinlai once8many problems. For example,he once had to go through security at an airport,but the staff workers thought his ID card was not real because they all knew he was named Liu Xiao Ling Tong.After meeting many such problems,he communicated with the police station and he was then9to have two ID cards.On the talent show,he expressed his thanks to Zhengjiang TV for giving him a chance to reunite with other artists.

B:He is truly a thankful and hardworking man who still makes great10to do something for the development of arts.

A:Tang Xuanzang and his three disciples met81problems to get the final success.When making the TV drama,all the actors and staff worker faced many more difficulties.But they never gave up and it took them six years to make the TV drama.Their spirit touched me a lot.

B:Yeah.We should learn from them.

三、短文填空。从下面方框中选出10个单词,使短文意思正确通顺(每词限用一次)。(共10个小题,每小题1分;计10分)

that,use,remain,other,create,compete,interest,reflect,something,simple,else,how

Famous Irish poet Oscar Wilde once wrote:“Ah!Realize your youth while you have it.”He pointed out the important truth about how invaluable youth is in one’s journey through life.

However,the popular internet slang word foxi-or“Buddhist”-is challenging this norm(标准)by encouraging young people1calm and peaceful and avoid argument as much as possible-in other words,to live like a Buddha(佛陀).

It’s said that the phrase2in Japan in2014to describe young men who no longer trouble to start relationships with women or follow someone3life path(道路).They prefer to stay in their own peaceful world and care little about passion and success.

Now,Chinese internet4are creating other words to describe a similar mindset(思维模式). For example,“Buddhist students”are5who study just the right amount-they don’t cut class, but they don’t burn the midnight oil,either.There are also“Buddhist parents”,who interfere(干涉)little with their children’s lives and let them develop6they like-the opposite of“helicopter parents”.

In this fast-changing and7world,it’s only natural that people are looking for a spiritual anchor(精神港湾).

However,some would compare foxi with“demotivational culture”(丧文化)-a phrase that describes young people who feel aimless(无目标的)and powerless.They say foxi actually8 the reality(现实)that young people are losing their will to fight.They are pretending(装作)to keep a healthy and wise attitude toward failure9because they’re unable to succeed.

But no matter what,there is one thing that“Buddhist youngsters”should keep in mind:You may want to keep a calm mindset regarding failure,but you should also be positive(积极的)about school, work and life.

After all,Wilde also wrote:“Live the wonderful life that is in you!Let10be lost on you.

Be always searching for new feelings.”

四、阅读表达。(共10小题;计10分)

A.补全短文。根据短文内容,从短文后的A-F选择中,选出5个适当的选项补全短文。(共5

小题,每小题1分;计5分)

In ancient China,dogs received less respect.The word“dog”was used as part of negative phrases, like gouzhangrenshi(狗仗人势)and yingyinggougou(蝇营狗苟).

____1____Experts believe dogs were less important than livestock(家畜)like horses and oxen in helping people with daily work.

Traditionally,people admire those who have noble(高尚的)character and dignity(尊严).____2____This makes them seem like they should be looked down upon.

But today,with more Chinese people keeping dogs as pets,caring for dogs and sharing pictures of them are part of the owners’lives.Also,many young people enjoy being described like a dog,such as

in the phrase“single dog”.____3____

In western countries,however,people see dogs very differently---they treat dogs as friends or even family members.

This can be back to ancient times,too.Hunting(打猎)was an important part of life in Europe and later became a popular form to have fun.People would use dogs to find and catch animals.___4__ Some sayings in English show how dogs are respected:Love me,love my dog;as faithful as a dog;work like a dog.

____5____In countries like the United States and France,there are different shows and competitions especially for dogs,such as beauty contests.Many movies like A Dog’s Purpose also have dogs in the leading roles.

A.Dogs are now becoming necessary parts of people’s lives.

B.People still consider dogs to be important.

C.One reason is that most people were farmers back then.

D.For them,dogs are a symbol of bravery and honesty.

E.They think their lives share some similarity with dogs’lives,which is a way to make fun of themselves.

https://www.doczj.com/doc/8a17625044.html,pared with other animals,dogs depend more on humans beings and often follow their owner’s orders.

B.完成表格。阅读下面短文,根据短文内容,完成表格中所缺的信息。(共5个小题,每小题1分;计5分)

The second Thursday of each November is Guinness World Records Day.Every year,it’s a time when we get to admire the wonderful things that people have achieved.

Well,perhaps it isn’t.Clearly,some of the record makers and breakers seem more admirable than others.It’s perfectly possible to admire the achievement of a sportsperson like Usain Bolt,for example, who is the only athlete to win the100m and200m Olympic titles three times in a row.Running is a tradition that goes all the way back to the Greek Olympic competitions.

But one wonders whether the person who holds the record for growing the largest onion,or the one who holds the record for the most wooden toilet seats broken within a minute using only the forehead(前额),is quite as worthy of our admiration as Bolt is.

The Greek poet Pindar wrote great poems to the athlete of his day.It seems impossible that anyone today would write a poem to a man for growing an unusually big vegetable.In other words,some of these Guinness records seem a bit silly.

So,why do people choose to try and create the world records for such meaningless things?Perhaps the experts can help.Stephen Garcia,a professor at the University of Michigan,tried to explain it.“People are always trying to find a way to make themselves seem like they are at the top”,he said.

It’s not that they want to be the best at everything but just to be the best at something.They look for what he calls“optimal distinctiveness”(最优特性).It seems to them that everyone stands out at something,and these record holders just want to discover what their“something”is.

That means it isn’t just crazy competitiveness that makes people consider spending a lot of time, effort and perhaps money being the best at a meaningless thing-like cycling backwards while playing a violin-but a desire(欲望)to be part of society.

Guinness World Records Day is not only about fun.Above all,it’s about letting people count for something in the world.

Guinness World Records Day

1to Guinness World Records Day It’s on the second Thursday of each November when we can admire the wonderful things that people have achieved.

Different attitude toward different achievements of the world record makers and breakers People2some of the record makers and breakers 2than others.

People’s doubt Why do people choose to create the world records which are

not so worthy as others?

An expert’s3People are always trying to find a way to make themselves seem like they are at the top.

They want to find out something that they are best at.

It’s their desire to be part of society4crazy competitiveness that makes people consider spending a lot of time,effort and perhaps money being the best at a meaningless thing.

Conclusion Guinness World Records Day is more than having fun.Letting

people count for something in the world is5.

成都七中育才学校2017-2018学年上期期末测试七年级英语

成都七中育才学校2017-2018学年度上期期末测试七年级英语 考试时间:120分钟满分:150分 温馨提示: 1.请用黑色签字笔在答题卷上规定地方清晰,工整的写上自己的班级、姓名、学号等信息。答题卷上禁止涂抹和使用涂改液,若写错需要更改,请把原答案用笔轻轻地划去,并在空白处写出正确答案! 2.在填涂机读卡上对应题号下面的答案时,请注意厚薄均匀,否则会影响最后的评分。 3.请注意机读卡上题号的顺序,并且注意保持答题卷的整洁,否则会影响最后的评分。 A卷(共100分) 第一部分听力部分(共30小题,计30分) 一、听句子,根据所听到的内容选择正确答语。每小题念两遍。(共5小题,每小题1分;计5分)()1.A.Good afternoon! B.Fine,thanks! C.Nice to see you! ()2.A.Yes,she does. B.No,he doesn’t. C.Yes,I do. ()3.A.In June. B.In the classroom. C.At6:30. ()https://www.doczj.com/doc/8a17625044.html,e on! B.You’re welcome! C.Yes,please. ()5.A.He works late. B.At a radio station. C.He’s a DJ. 二、听句子,选择与所听句子内容相符的图片,并将代表图片的字母填在答题卡的相应位置。每小题念两遍。(共5小题,每小题5分;计5分) A B C D E 6.7.8.9.10. 三、听对话,根据对话内容及问题选择正确答案。每小题念两遍。(共10小题,每小题1分;计10分)()11.A.The music club. B.The art club. C.The swimming club. ()12.A.In the bookcase. B.Under the bed. C.On the sofa. ()13.A.6dollars. B.12dollars. C.10dollars. ()14.A.Yes,it is. B.Yes,he does. C.No,he isn’t. ()15.A.Some ice-cream. B.Some bread. C.Some milk. ()16.A.On January1st. B.On September3rd. C.On February24th. ()17.A.Amy’s sister. B.Amy’s cousin. C.Amy’s classmate. ()18.A.Yellow. B.Green. C.Brown. ()19.A.Yes,she can. B.No,she can’t. C.Sorry,I don’t know. ()20.A.Vegetables or fruit. https://www.doczj.com/doc/8a17625044.html,k or bread. C.Hamburgers or bananas.

2020-2021成都七中实验学校(初中部)七年级数学上期末模拟试卷(含答案)

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七年级下学期英语期末模拟试卷含答案 注意事项: 1. 答题前,考生先将自己的姓名、准考证号填写清楚,将条形码准确粘贴在考生信息条形码粘贴区。 2.选择题必须使用2B铅笔填涂;非选择题必须使用0.5毫米黑色字迹的签字笔书写,字体工整、笔迹清楚。3.请按照题号顺序在各题目的答题区域内作答,超出答题区域书写的答案无效;在草稿纸、试题卷上答题无效。4.保持卡面清洁,不要折叠,不要弄破、弄皱,不准使用涂改液、修正带、刮纸刀。 二、单项选择(15小题,每小题1分,共15分) 从A、B、C、D四个选项中选出一个最佳答案,并将其标号填入题前括号内. ( )26.--- did you go to Beijing? --- Two years ago. A. How often B. When C. How long D. Where ( )27.--- When was your Little brother born, LiPing ? --- He was born the evening of May 1st, 2018 . A.in B. on C. at D. of ( )28.We'll have to say goodbye, my dear friends. But I'll forget these days we spent(度过) together. A. never B. always C. usually D. often ( )29.--- Did you in the park yesterday? --- Yes , we had a good time . A. enjoyed yourself B. enjoyed yourselves C. enjoy yourselves D. enjoy yourself ( )30.I'm afraid you can't catch the train because you have time. A. a little B. few C. a few D. little ( )31.--- Can you it in English? --- Sorry, I can't English. A. say; say B. speak;speak C. say; speak D. speak;say ( )32.--- Excuse me, which is the way to the bank ? --- Go across the bridge. The bank is from the hospital. A. cross B. across C. crossing D. crossed ( )33.--- What land of house does your uncle live in? --- He lives in an apartment with floors. He is on the floor. A. fifth; three B. five; three C. fifth; third D. five; third ( )34. For many parents in China, children are almost(几乎) in their loves.

2018-2019学年四川省成都七中实验学校七年级(下)月考数学试卷(3月份)(word解析版)

2018-2019 学年四川省成都七中实验学校七年级(下)月考数学 试卷(3 月份) 一、选择题(每小题 3 分,共 30 分) 1.(3 分)计算(﹣a )3(﹣a )2 的结果是( ) A .﹣a 5 B .a 5 C .﹣a 6 D .a 6 2.(3 分)将 0.00000573 用科学记数法表示为( ) A .0.573×10 ﹣5 B .5.73×10 ﹣5 C .5.73×10 ﹣6 D .0.573×10 ﹣6 3.(3 分)下列运算正确的是( ) A .a 3?a 3=a 9 B .a 3+a 3=a 6 C .a 3 ?a 3=a 6 D .a 2?a 3=a 6 4.(3 分)计算(﹣)2018×52019 的结果是( ) A .﹣1 B .﹣5 C .1 D .5 5.(3 分)下列计算正确的是( ) A .(2x ﹣3)2=4x 2+12x ﹣9 C .(a +b )(a ﹣b )=a 2+b 2 B .(4x +1)2=16x 2+8x +1 D .(2m +3)(2m ﹣3)=4m 2﹣3 6.(3 分)已知:a =()﹣ 3,b =(﹣2)2,c =(π﹣2018)0,则 a ,b ,c 大小关系是( ) A .b <a <c B .b <c <a C .c <b <a D .a <c <b 7.(3 分)若 a m =8,a n =2,则 a m ﹣n 等于( ) A .2 B .4 C .6 D .16 8.(3 分)如果 x 2+mx +n =(x +3)(x ﹣1),那么 m ,n 的值分别为( ) A .m =2,n =3 B .m =2,n =﹣3 C .m =﹣2,n =3 D .m =﹣2,n =﹣3 9.(3 分)若三角形的底边长为 2a +1,该底边上的高为 2a ﹣1,则此三角形的面积为( ) A .2a 2﹣ B .4a 2﹣4a +1 C .4a 2+4a +1 D .4a 2﹣1 10.(3 分)如图,将 6 张长为 a ,宽为 b 的矩形纸板无重叠地放置在一个矩形纸盒内,盒底未被覆盖的两个矩形面积分别记为 S 1、S 2,当 S 2=2S 1 时,则 a 与 b 的关系为( ) A .a =0.5b B .a =b C .a =1.5b D .a =2 b

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