初三英语—2019_2020学年广东广州越秀区广州市铁一中学(本部校区)初三上学期期中英语试卷

初三英语—2019_2020学年广东广州越秀区广州市铁一中学(本部校区)初三上学期期中英语试卷
初三英语—2019_2020学年广东广州越秀区广州市铁一中学(本部校区)初三上学期期中英语试卷

1

4. A.worry

B.worrying

C.worried

D.to worry 5. A./

B.a

C.an

D.the 6. A.reached to

B.got

C.arrived

D.got to 7. A.quiet

B.quietly

C.quieter

D.quietness 8. A.standing

B.stood

C.stands

D.stand 9. A.open

B.opened

C.opening

D.opens 10. A.something

B.nothing

C.anything

D.everything 11. A.or

B.and

C.with

D.as well 12. A.in

B.with

C.to

D.on 13. A.leave

B.leaves

C.left

D.leaving 14. A.what

B.that

C.which

D.who 15. A.failed B.fail C.fails D.failing

(共10小题,每小题1分,共10分)

1. A.jumps

B.falls

C.runs

D.walks 2. A.lesson

B.adventure

https://www.360docs.net/doc/7210992233.html,petition

D.experiment 3. A.cut B.take C.put D.get

The classic tale of Alice's Adventures in Wonderland (《爱丽丝梦游仙境》) is a book

many children grow up with. It has been around for over 150 years.

In the story, the 7-year-old Alice is running after a white rabbit, but she accidentally 1 down a rabbit hole. She enters a world called Wonderland, and this is where the 2 begins.

In Wonderland, there seem to be no rules or logic (逻辑). Alice meets many strange and wonderful characters. A cruel (残酷的) queen says she is going to 3 off someone's head every two minutes. A cat smiles so big that its lips almost 4 its ears. And strange things happen to Alice too. Her body 5 and shrinks (缩小) during her time in Wonderland.

Alice is very annoyed because she doesn't 6 this strange place. But in fact, the story is about an innocent (天真的) child trying to make 7 of the strange adult world, said Professor Will Brooker of Kingston University London.

When British author Lewis Carroll wrote the story in 1865, its special style and humor made it a 8 of its time. It even created some 9 we still use today. When people say "down the rabbit hole", they mean to make a choice where the result is unknown.

The story also lives on through different 10 . There are paintings and music videos based on the story. In summer 2016, the movie Alice Through the Looking Glass was released in cinemas.

2二、完形填空

7. A.sure

B.part

C.sense

D.fun 8. A.classic

B.fashion

C.aim

D.beauty 9. A.characters

B.styles

C.places

D.phrascs 10. A.programs B.artworks C.films D.books

(共20小题,每小题2分,共40分)

This is a tale of two friends—one is blind, the other has no arms. On their own, the two are

"disabled" . But together, they are a powerful team that has changed part of their village in North China's Hebei Province into a rich, green forest. Meet 53-year-old Jia Haixia and Jia Wenqi!

Their story began in 2000, when Haixia, who was already blind in his right eye, lost his left one after an illness. Wenqi lost his arms in an accident when he was just three. Neither could find a job, so the two decided to team up. They rented some poor land and began to plant trees.In return, the local officials paid them a small fee. Haixia and Wenqi never imagined that they would end up creating an environmental paradise. Their forest now has over 10, 000 trees,hundreds of birds and many other wild animals. In addition, it saves the village from river flooding during the rainy season. When the friends work together, they focus on their strengths not their disabilities. Their day begins at 7 a.m. when the sightless Haixia carries Wenqi across the river to get to their worksite. Since they cannot afford to buy young trees to plant, the two use branches from existing trees. Haixia climbs to the tree-top and with Wenqi's direction,selects the perfect branch. He then digs a hole and carefully plants it. Finally Wenqi waters the area.

Though hard-working, the men don't make much money. But as Wenqi puts it, " We stand on our own feet, so the fruits of our work taste sweeter ."

Neither Haixia nor Wenqi cares about money. Together, they already have everything they need—a perfect pair of eyes, two strong hands, and the best friendship in the world!

3 A.B.C.D.Why did Haixia and Wenqi start working together?

Haixia needed someone to help him.

They both needed a way to make money.

They wanted to improve the environment.

They were required to do so by local offcials.

(1)A.stopping floods in the rainy season

B.increasing the number of tourists

C.making the villagers richer

D.providing more farmland

Haixia and Wenqi's forest has helped the village by .

(2)A.They are easy to get.

B.They do not cost money.

C.They can grow very quickly.

D.They are preferred by animals.

Why do Haixia and Wenqi plant tree branches?

(3)三、阅读理解

B.C.D.the fruits from their trees are very sweet

they are proud not to depend on others

they are able to do any difficult work

A.Never give up and you will succeed.

B.We should help the disabled to work.

C.Try your best when facing difficulties.

D.We can achieve more with teamwork.

What can we learn from this story?

(5)When you think of the Arctic, you imagine an icy land of pure white snow. Others imagine it as the last really clean place left on Earth. We have polluted the deepest oceans with plastic trash, and now, CNN says, "It's the Arctic's turn."

German scientists have recently found microplastics in Arctic snow, the Associated Press reported. Microplastics are pieces of plastic smaller than 5 millimeters. Sadly, the scientists found 1, 800 pieces of microplastics per liter of snow.

How is plastic pollution reaching the Arctic? According to scientists, "It's obvious that the majority of the microplastics in the snow comes from the air. " They fall off of plastic objects and are moved by the wind, just like dust. They mix mith ice in the air and fall to the ground as snow.Finding these plastics in Arctic snow means that we may breathe them in. An even higher amount of microplastic was found in the snow around cities.

The high concentrations found in snow samples suggest microplastics, which contain rubber or chemicals used in synthetic fabrics (混合纤维), may cause significant air pollution.

Are they bad for us? Scientists cannot answer this question for now, according to the World Health Organization. We do know that our bodies cannot take in "large" pieces of microplastics.However, if the plastics are small enough, they can find ways into our bodies and stay there for a long time, which can be bad for our health. What's more, earlier studies have shown that microplastics may contribute to lung cancer risk, heightening the need to further assess the risks of taking them in, the study said.

Microplastics have also been found in rivers and oceans around the world. Previous research has found that they flow over long distances and into our oceans, damaging ecosystems along the way. They start in our wastewater, when we wash clothes with plastic fibers. The wastewater then flows into rivers and out to sea, where they are eaten by sea animals. If people then eat these animals, it means that we're eating the plastic as well.

4 A.The ocean. B.The air. C.The land. D.The river.

Where did most microplastics in Arctic Snow come from?

(1)A.1, 800. B.180. C.180, 000. D.18, 000.

How many pieces of microplastics per liter of snow did the scientists find?

(2)A.B.C.What does the underlined "them " refer to?

Microplastics are bad for the environment.

Microplastics may increase the risk of lung cancer.

Our bodies can't take in microplastics.

(3)

A.In a storybook.

B.In a travel magazine.

C.In a science fiction.

D.In a newspaper.

Doctor Seuss was born in 1904. By the middle 1950s, he had become one of the best-loved

and most successful children's book writers in the world. His books are very popular with young readers. They enjoy the invented words and the pictures of unusual funny animals and plants. In 1954, life magazine published a report about school children who could not read. The report said many children's books were not interesting. Doctor Seuss strongly hoped to help children and decided to write books that were interesting and easy to read. He used words with the same ending sound, like fish and wish. He did not receive training in art. Yet, he drew the pictures for most of his books.

In 1957, Dr. Seuss wrote The Cat in the Hat. He used less than 230 words to write the book and even a six-year-old child should be able to read it. It was a fun story and easy to read.

Children loved it. Their parents loved it, too. Today it is still one of the stories they like best. The success of The Cat in the Hat made him want to write more books for children. In 1960, he wrote a book using less than fifty words. The book is called Green Eggs and Ham.

In 1984, Doctor Seuss won a Pulitzer Prize (普利策奖). He was honored for the education and enjoyment. He died at the age of 87, but his influence remains. Millions of his books have been sold worldwide. People say his books helped change the way American children learned to read. Yet, his books are loved by people of all ages. Doctor Seuss once said, "Do not write for children. I write for people."

5 A.some school children could not read

B.many children's books were interesting

C.children wanted to learn to read

D.a writer for children was wanted

Doctor Seuss learned from the magazine that .

(1)A.B.C.D.Why do people like his books? Because .

the books are cheap and easy to get

the books were written in different languages

the books are easy and interesting to read

the books were written with invented words

(2)A.④→①→③→② B.③→①→②→④ C.④→①→②→③ D.③→②→①→④

Which of the following shows the right order of what happened in the passage?

①The Cat in the Hat. It was a fun story and easy to read.

②He wrote a book using less than fifty words. The book is called Green Eggs and Ham.③He was honored for the education and enjoyment.

④He had become the most successful children's book writers in the world

(3)A.B.C.Which of the following is true according to the passage?

Doctor Seuss wrote Green Eggs and Ham with over 230 words.

Doctor Seuss wrote books only for children in the United States.

The Cat in the Hat was written only for six-year-old children.

(4)

A.B.C.D.He won a Pulitzer Prize soon after his death.

He sold millions of his books himself worldwide.

He wrote the largest number of books in the world.He changed American children's way of reading.

Christmas Singing Competition 2016

Entry Form (参赛表)

Singer's Name

Singer's Age

Competition Type

Music Age Singing

Bring your own CD, Prepare 2songs 13-19 year olds only Prizes

Entry Date Fee 1, 2 and 3Before November 30, 2016None Competition Rules

●Relatives of judge (评委)and organizers are not allowed to take part in the competition.●All singers must be between 13 and 19 years of age.

●Singers aged 17 or younger need the permission of a parent to take part (See Parent Permission below )

●All singers must arrive at least 30 minutes before the start of the competition. Late comers will not be allowed to take part.

Prizes:

●1 Prize-$1000 (one prize only )

●2 Prize-$250 (3 prizes )

●3 Prize -$100 (5 prizes )

Winners will be decided according to the following:

Voice Quality

50%Song Choice 15%Audience Response 25%Dancing Ability 10%Christmas Singing Competition

Head organized: William Daniels

Tel: 2343 43453

Email: w daniels@https://www.360docs.net/doc/7210992233.html,

Website: https://www.360docs.net/doc/7210992233.html, Date of Event: December 20, 2016

Where: City Town Hall 191 King Street New town Time: 1:30 p.m. to 8:30 p.m.Tickets: $15(adults ) $5(children under

17)

Parent Permission (needed for singers aged 17 or younger )

Parent Name:

Si t D t i d

6st nd rd

st nd rd

A.Three

B.Five

C.Nine

D.Ten

A.A 20-year-old singer.

B.A 19-year-old daughter of a judge.

C.A 15-year-old friend of an organizer.

D.A 12-year-old friend of William Daniels.

Who can take part in the competition?

(2)A.$15 B.$20 C.$25 D.$30

If one singer's parents want to watch the competition how much will they pay?

(3)A.Voice Quality

B.Song Choice.

C.Audience Response

D.Dancing Ability.

Which of the following is the most important for deciding the winners?

(4)A.B.C.D.If an 18-year-old singer wants to enter the competition, which parts of the form must be

completed?

Singer's Name.

Singer's Name and Singer's Age.

Singer's Name, Singer's Age and Date of Event.

Singer's Name, Singer's Age and Parent permission.

(5)(共5小题,每小题1分,共5分)

A.B.C.D.If you are in Shanghai and want to throw away a cup of milk tea, be careful. 1 : first,

pour out any leftover (残留物)into a wet waste bin; second, put the paper wrapper into a recyclable waste bin; third, throw the single-use cup and straw (吸管 )into a dry waste bin.

Sound complex (复杂的)? You'll have to get used to it. From July I on, people in Shanghai are required to sort their garbage according to strict rules. 2 .

Why should we sort our garbage? The answer lies in the increasing amount of waste we are producing. Chinese cities produce over 200 million tons of waste each year, according to China Economic Net. Most of this waste is buried in landfills (垃圾填埋场), which may pollute water and soil. 3

In fact, more than half of our waste can be recycled. Recyclable garbage can be made into new materials, while wet garbage can be used to make gas, heat and fertilizer (肥料). 4

Can't garbage-processing companies do the sorting job for us? They can. But that requires a lot of work and costs lots of money. 5 . Besides, the troublesome task of sorting might encourage people to produce less waste. Do you still want to bay that milk tea?

Many other cities in China are planning to create similar garbage-sorting rules.

But in order to recycle efficiently (有效率地), we need to sort our garbage.

Things will become much easier if each of us can sort our own garbage.

Moreover, we are running out of space for new landfills.

7四、语篇补全

(共12小题,每小题1分,共12分)

The grand military parade and celebrations held in Beijing on Oct. 1, 2019 were a visual feast (视觉盛宴) for many people both at home and a .

8I e that he'll pass the exam after working hard for such a long time.

9The young solider practiced hard to a making mistakes in the military parade.10The grand National Day celebration in Tian'anmen Square was the main e in 2019.11It's dangerous to talk with strangers about your p information.

12I deeply r what I said to her. My words might hurt her feeling.

13I don't think you are telling me the whole t about what happened.

14The c waiter dropped the dish.

15You should be a of yourself for telling such lies.

16We never d that Chinese Women's Volleyball Team would win the World Cup this Year.

17Professor Zhang was invited to give a I on the history of art.

18You cannot s problems by just running away.

19(共8小题,共13分)

五、首字母填空

六、完成句子

the team failed regrettably in the end, Yi's struggle undoubtedly touched all the fans.从现在起,我将不玩电脑游戏,努力学习不让父母失望.

I'll computer games and begin to work hard from now on. I won't my parents .

21在观看电影《我和我的祖国》之前,那个美国小男孩对中国过去70年的历史知之甚少。

The little American boy about the Chinese history of the latest 70 years before he watched the movie My people, my country.

22我尝试过帮助他,但他总是说这与我无关.

I tried helping him, but he always says that it's

23小狗把这里弄的一团糟,我快疯了!

a mess the dog has made! It nearly .

2411年前汶川地震后幸存下的12岁小男孩陈强实现了自己的梦想,成名了一名空降兵。

Chen Qiang, the boy who survived from the earthquake in Wenchuan 11 years ago,realized his a pilot.

25我妈妈五十多岁了,但是她看上去比实际年龄年轻得多。

My mother is in her fifties, but she than she really is.

26今晚有大雨,离开教室时,确保门窗都关好了。

There is going to be a heavy rain tonight. the doors and windows are closed when you leave the classroom.

27(共1小题,共15分)

如今,随着科技的快速发展,手机极大地方便了人与人之间的沟通和交流,但是越来越多的

人在加入了 "低头族" 的同时,他们与家人的交流也随之减少,感情变淡。请根据下图的提示写一篇短文,并给出建议,适当拓展。

28七、书面表达

建议 1. 合理使用手机

2. 参加户外活动

3. ……

注意:1. 参考词汇:低头族:phubber

2. 词数80左右(文章开头已给出,不计入总词数)

3. 不得透露学校、姓名等任何个人信息,否则不予计分。

As we know, the smart mobile phone has been playing an increasingly important role in our daily life. It has influenced us in many ways.

2019-2020学年广东省广州市越秀区七年级(上)期末数学试卷

2019-2020学年广东省广州市越秀区七年级(上)期末数学试卷一、选择题 1.如果水位升高2m时水位变化记作+2m,那么水位下降2m时水位变化记作()A.﹣2m B.﹣1m C.1m D.2m 2.在0,﹣,﹣,0.05这四个数中,最大的数是() A.0B.﹣C.﹣D.0.05 3.下列各式中,是一元一次方程的是() A.x﹣y=2B.x2﹣2x=0C.=5D.﹣5=0 4.与ab2是同类项的是() A.a2b B.ab2c C.xy2D.﹣2ab2 5.如图,从A地到B地有四条路线,由上到下依次记为路线①、②、③、④,则从A地到B地的最短路线是路线() A.①B.②C.③D.④ 6.将一个直角三角形绕着它的一条直角边所在直线旋转一周,得到的立体图形是()A.圆柱B.圆锥C.圆台D.球 7.已知a=2b,那么下列等式中不一定成立的是() A.a+b=3b B.a﹣c=2b﹣c C.a=b D.=2 8.某商店以每件120元的价格卖出两件衣服,其中一件盈利20%,另一件亏损20%,那么商店卖出这两件衣服总的是() A.亏损10元B.不赢不亏C.亏损16元D.盈利10元9.若关于x的方程ax+1=2x+a无解,则a的值是() A.1B.2C.﹣1D.﹣2 10.满足等式|x|+5|y|=10的整数(x,y)对共有() A.5对B.6对C.8对D.10对

二、填空题 11.地球绕太阳公转的速度约是110000km/h,用科学记数法可表示为km/h.12.笔记本的单价是x元,圆珠笔的单价是y元,买4本笔记本和2支圆珠笔共需元.13.如图是一个小正方体的展开图,把展开图折叠成小正方体后,有“守”字一面的相对面上的字是. 14.在梯形面积公式S=(a+b)?h中,已知S=18,b=2a,h=4,则b=.#DLQZ 15.在一张普通的月历中,相邻三行里同一列的三个日期数之和为27,则这三个数分别是. 16.已知a﹣3b+c=8,7a+b﹣c=12,则5a﹣4b+c=. 三、解答题 17.计算 (1)(﹣5)+(+7)﹣(﹣3)﹣(+20) (2)25÷×(﹣)+(﹣2)×(﹣1)2019 18.先化简,再求值: (1)5a2+bc+abc﹣2a2﹣bc﹣3a2+abc,其中a=2,b=3,c=﹣; (2)6(x+y)2﹣9(x+y)+(x+y)2+7(x+y),其中x+y=. 19.解下列方程 (1)2x=﹣3(x+5) (2)﹣1= 20.如图,已知点C在线段AB上,点M,N分别在线段AC与线段BC上,且AM=2MC,BN=2NC. (1)若AC=9,BC=6,求线段MN的长; (2)若MN=5,求线段AB的长.

广东省广州市海珠区2018-2019学年八年级(下)期中数学试卷(含解析)

2018-2019学年广东省广州市海珠区八年级(下)期中 数学试卷 一、选择题(本大题共10小题,每小题2分,共20分.在每小题给出的四个选项中,只有一个符合题意) 1.下列运算正确的是() A.+=B.?=C.=D.=3 2.若,则() A.b>3 B.b<3 C.b≥3D.b≤3 3.若的整数部分为x,小数部分为y,则(x+)y的值是() A.B.3 C.D.﹣3 4.下列给出的条件中,不能判断四边形ABCD是平行四边形的是() A.AB∥CD,AD=BC B.∠A=∠C,∠B=∠D C.AB∥CD,AD∥BC D.AB=CD,AD=BC 5.如图,铁路MN和公路PQ在点O处交汇,∠QON=30°.公路PQ上A处距O点240米.如果火车行驶时,周围200米以内会受到噪音的影响.那么火车在铁路MN上沿ON方向以72千米/时的速度行驶时,A处受噪音影响的时间为() A.12秒B.16秒C.20秒D.30秒. 6.在矩形ABCD中,AB=3,BC=4,则点A到对角线BD的距离为() A.B.2 C.D. 7.如图,在△ABC中,D,E,F分别为BC,AC,AB边的中点,AH⊥BC于H,FD=8,则HE等于()

A.20 B.16 C.12 D.8 8.如图,在菱形ABCD中,M,N分别在AB,CD上,且AM=CN,MN与AC交于点O,连接BO.若∠DAC=28°,则∠OBC的度数为() A.28°B.52°C.62°D.72° 9.如图,点A,B为定点,定直线l∥AB,P是l上一动点,点M,N分别为PA,PB的中点,对下列各值: ①线段MN的长; ②△PAB的周长; ③△PMN的面积; ④直线MN,AB之间的距离; ⑤∠APB的大小. 其中会随点P的移动而变化的是() A.②③B.②⑤C.①③④D.④⑤ 10.如图,正方形ABCB1中,AB=1,AB与直线l的夹角为30°,延长CB1交直线l于点A1,作正方形A1B1C1B2,延长C1B2交直线1于点A2,作正方形A2B2C2B3,延长C2B3交直线l于点A3,作正方形A3B3C3B4…依此规律,则A2017A2018=()

广东省广州市中考数学试卷含答案

2005年广州市中考数学试卷 第一部分 选择题(共30分) 一、选择题(本大题共10小题,每小题3分,满分30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. 下列四个数中,在-2和1之间的数是( ) A. –3 B. 0 C. 2 D. 3 2. 如图,将一块正方形纸片沿对角线折叠一次,然后在得到的三角形的三个角上各挖去一个圆沿,最后将正方形纸片展开,得到的图案是( ) 3. 下列各点中,在函数72-=x y 的图像上的是( ) A. (2,3) B. (3,1) C. (0,-7) D. (-1,9) 4. 不等式组? ??>-≥+010 1x x 的解集是( ) A. 1-≥x B. 1->x C. 1≥x D. 1>x 5. 已知1 2112-=+=b a ,,则a 与b 的关系是( ) A. a=b B. ab=1 C. a=-b D. ab=-1 6. 如图,AE 切圆O 于E ,AC=CD=DB=10,则线段AE 的长为( ) A. 210 B. 15 C. 310 D. 20 7. 用计算器计算,,,,1 51 51414131312122222--------…,根据你发现的规律,判

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2018-2019学年广东省广州市越秀区八年级(下)期末数学试卷一、选择题:本大题共10小题,每小题3分,满分30分.在毎小题给出的四个选项中,只有一项是符合题目要求的 1.(3分)下列计算正确的是() A.=±4B.=﹣5C.=10D.=3 2.(3分)计算﹣的结果是() A.25B.2C.D.5 3.(3分)为评估一种农作物的种植效果,选了8块地作试验田,这8块地的亩产量(单位:kg)分别为x1,x2,…,x8,下面给出的指标中可以用来评估这种农作物亩产量稳定程度的是() A.x1,x2,…,x8的平均数B.x1,x2,…,x8的方差 C.x1,x2,…,x8的中位数D.x1,x2,…,x8的众数 4.(3分)下列命题的逆命题是真命题的是() A.如果两个角是直角,那么它们相等 B.如果两个实数相等,那么它们的平方相等 C.如果一个四边形是菱形,那么它的四条边都相等 D.如果一个四边形是矩形,那么它的对角线相等 5.(3分)若平行四边形其中两个内角的度数之比为1:4,则其中较小的内角是()A.30°B.36°C.45°D.60° 6.(3分)下列各曲线中,表示y是x的函数的是() A.

B. C. D. 7.(3分)若函数y=kx+b是正比例函数,且y随x的增大而减小,则下列判断正确的是()A.k>0B.k<0C.b>0D.b<0 8.(3分)已知一次函数y=kx+b的图象经过点(0,﹣1)与(﹣2,0),则不等式kx+b >0的解集是() A.x<﹣2B.x>﹣2C.x<﹣1D.x>﹣1 9.(3分)如图,四边形ABCD是直角梯形,E,F,G,H分别是AB,BC,CD,DA的中点,连接AC,BD,EF,FG,GH,HE,则图中的平行四边形共有() A.1个B.4个C.5个D.9个 10.(3分)如图,在Rt△ABC中,∠A=90°,AB=8,AC=6,将△ABC沿CD翻折,

2019-2020学年广东省广州市海珠区七年级(上)期末数学试卷

2019-2020学年广东省广州市海珠区七年级(上)期末数学试卷 一、选择题(本大题共10小题,每小题3分,共30分,在每小题给出的四个选择项中,只有一项是符合题目要求的) 1.(3分)﹣2019的相反数是() A.2019B.﹣2019C.D.﹣ 2.(3分)如图,是一个正方体的展开图,原正方体中“文”字一面相对的面上的字是() A.建B.明C.城D.市 3.(3分)下列代数式中,属于多项式的是() A.B.3x﹣y C.D.﹣x 4.(3分)若∠A=25°,则∠A的补角的度数为() A.55°B.175°C.75°D.155° 5.(3分)已知5x1+m y4与x3y4是同类项,则m的值是() A.3B.2C.5D.4 6.(3分)如果(x﹣2)2+|y+1|=0,那么x+y=() A.1B.﹣1C.2D.0 7.(3分)下列说法错误的是() A.若a=b,则a+c=b+c B.若a=b,则a﹣c=b﹣c C.若a=b,则ac=bc D.若a=b,则= 8.(3分)已知a,b是有理数,若a在数轴上的对应点的位置如图所示,且a+b<0,有以下结论: ①b<0;②a﹣b<0;③b<﹣a<a<﹣b;④|a|<|b|, 其中结论正确的个数是() A.4个B.2个C.3个D.1个

9.(3分)用白铁皮做罐头盒,每张铁皮可制盒身15个,或制盒底42个,一个盒身与两个盒底配成一套罐头盒,现有108张白铁皮,怎样分配材料可以正好制成整套罐头盒?若设用x张铁皮做盒身,根据题意可列方程为()A.2×15(108﹣x)=42x B.15x=2×42(108﹣x) C.15(108﹣x)=2×42x D.2×15x=42(108﹣x) 10.(3分)在数轴上,点A对应的数是﹣6,点B对应的数是﹣2,点O对应的数是0.动点P、Q分别从A、B同时出发,以每秒3个单位,每秒1个单位的速度向右运动.在运动过程中,线段PQ的长度始终是另一线段长的整数倍,这条线段是() A.PB B.OP C.OQ D.QB 二、填空题(本大题共6小题,每小题3分,共18分) 11.(3分)计算2×(﹣5)的结果是. 12.(3分)截止2019年10月底,广州建成5G基站约12000座,多个项目列入广东省首批5G融合应用项目,将数12000用科学记数法表示,可记为. 13.(3分)如果m﹣n=5,那么3m﹣3n﹣7的值是. 14.(3分)若关于x的方程5x+3k=1的解是x=﹣1,则k的值为. 15.(3分)在一次猜谜比赛中,每个选手要回答30题,答对一题得20分,不答或答错扣10分,如果小明一共得了120分,那么小明答对了题. 16.(3分)利用计算机设计了一个程序,输入和输出的结果如下表: 输入…12345… 输出…a3… 当输入数据是n时,输出的结果是. 三、解答题(本大题共8题,共72分,解答应写出文字说明、证明过程或演算步骤.) 17.(8分)计算: (1)﹣5﹣(﹣3)+(﹣2)+8 (2)(﹣1)2×2+(﹣2)3÷|﹣4| 18.(8分)解下列方程: (1)5x=3(2+x)

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