一．单项选择
()1.—Have you heard of Li Wenliang,doctor in Wuhan Central Hospital?
—Yes,it’s said that he was one of first men to remind people of the coronavirus.
A.a;the
B.the;a
C.a;a
D./;the
()2.—Joan is not so quick,but she has a good habit of working hand,it is like a hidden
https://www.doczj.com/doc/4414438481.html,petition
B.treasure
C.tradition
D.influence
()3.—The frozen yogurt tastes like ice cream but has of the fat.
—It suits my mother,she is on a diet.
A.any
B.neither
C.some
D.none
()4.—Where was Mr John at that time?
—Em,we found the robot.Something was wrong with it.
A.him fixing
B.he fixed
C.that he fixed
D.he fixing
()5.—May I speak to Mr.Green?
—Sorry,the wrong number.Please to114and check the number.
A.go through
B.look through
C.run through
D.put through.
()6.Many scientists believe human beings will face more serious problems they take action to change the way they live.
A.but
B.though
C.unless
D.until
()7.—This task is really beyond me.
—Well.if you solve it,you won’t get paid.
A.needn’t
B.can’t
C.shouldn’t
D.mustn’t
()8.we found him with.He’s quite an easy-going guy.
A.easily to work
B.easily working
C.easy to work
D.easy working
()9.—Look at Ann.How pale she looks!
—Well,she never eats.and that’s why she is not healthy.
A.rapidly
B.smoothly
https://www.doczj.com/doc/4414438481.html,pletely
D.properly
()10.—Do you know in Tokyo?
—It will be put off,but the date hasn’t been decided yet.
A.when will the32nd Olympic Games take place
B.when the32nd Olympic Games will be held
C.when will the32nd Olympic Games be held
D.when the32nd Olympic Games will be taken place
()11.—I hear that we may have to be at school on Saturday this term!
—What?I’ve never heard of idea before.
A.a crazier
B.the crazier
C.a craziest
D.the craziest
()12.—It’s said that Chris achieved high grades in the exam.
—That’s no surprise.He is you know.
A.a dark horse
B.a green hand
C.a nearly bird
D.a wet blanket
()13.—May I go to the cinema with Tom tomorrow,mom?
—Of course,if your homework by then.
A.will be finished
B.finish
C.will finish
D.is finished
()14.—The music is too loud.Could you turn it down,please?
—____________
A.Really?Thank you for telling me
B.Sorry,I didn’t notice
C.Well,I’m glad to hear that
D.It’s my pleasure
二．完形填空
Chef Zhang Xuesi lowered the fire on the stove where he was cooking his Cantonese meal.He added all the necessary foods,1the seafood,shrimp.He quickly lowered the fire and turned toward a phone camera2 hundreds of people Watched him online.
Many people in China have to stay in their homes in the effort to stop the3of https://www.doczj.com/doc/4414438481.html,lions of them are finding a new interest in cooking.
People watching television and online cooking shows are learning4to make Chinese and Western foods.They are also pushing up the sale of special cookware on online markets.
The Chinese video streaming company Billibilli said it has had more than580million views of its5videos in the two months since another online cooking show producer DayDayCook told Reuters its numbers of new users6 200percent from January to February.A recipe for bean curd and shrimp received the most watchers.
“We have never gained new users with such speed since we launched the7in2012,”said founder and leader Norma Chu.Many new home cooks are young people living in cities,say industry leaders.This group is used to8 in restaurants or getting food delivery.Now these people are cooking at home.
Wu Shuang is a30-year-old who works in Beijing,the capital.She was9those trapped at home in February. She says she spent a lot of time online,learning how to make bread and other foods.Chef Zhang,explained that many of his online viewers expressed10in discussing more than just food.
()1.A.including B.forgetting C.having D.remembering
()2.A.why B.before C.as D.after
()https://www.doczj.com/doc/4414438481.html,ing B.spread C.return D.birth
()4.A.what B.where C.when D.how
()5.A.cooking B.fire C.dancing D.singing
()6.A.got B.increased C.reduced D.became
()7.A.service B.beginning C.ending D.actions
()8.A.playing B.eating C.drinking D.buying
()9.A.between B.besides C.opposite D.among
()10.A.feeling B.humour C.interest D.anger
三．阅读理解
(A)
()1.If Amy works as a guide,she can get____________
A.$500a month
B.$12an hour
C.$35a week
D.$185a month
()2.If Mr Black wants to rent a house for his family,he can____________
A.call555-41401
B.call555-0698
C.call555-4863
D.e-mail guidehr@https://www.doczj.com/doc/4414438481.html,
()3.Who lost a cat?____________
A.Lizie
B.John
C.Andrew
D.Peter
(B)
We interviewed singer Maisie Peters after she private show at Atlantic Records in Manhattan,New York.We had a lot of fun chatting with her----we even got to sing with her!
Q:At what age did you start singing and playing the guitar and do you play other instruments?
A:I think I started singing probably when I was8in a singing club.When I started playing the guitar,I was12or13 years old.Actually,I played the guitar at first.I played it during my whole elementary school period,but I was so bad. My twin sister at that time played the clarinet.We were both equally awful.So my poor parents had to listen to terrible noises.Then I gave that up Q:How do you remember the words to your songs?
A:I sing them a lot.I guess when you do anything a lot,it’s just easier,to remember.You just have to practice all the time. Before I go on stags,I sing all the words under my breath,I still forget words sometimes,which is embarrassing.But you get over it and it’s fine.
Q:What advice would you give to someone who wants to be a singer?
A:If you’re going to be a singer,put yourself out there as much as you can.It’s pretty easy to do that nowadays with social media and YouTube.And that’s how I got started.And when you’re my age……you flee like you’ve got the best stuff to present,You can start a career on your own nowadays.You don’t need anyone to help you with that.So just put yourself out there.
()4.What instrument does Maisie Peters play?
A.Guitar.
B.Flute.
C.Clarinet.
D.Piano.
()5.According to Peters,singing songs under her breath____________
A.can help her remember the words to her songs every time
B.helps her feel less embarrassed when she makes mistakes
C.helps her prepare herself before going on stage
D.successfully makes her get over all difficulties
()6.Which of the following is a suggestion from Peters?
A.It is important to find someone to help you start your career.
B.You can start your career online on your own.
C.Young people should start to work as early as possible.
D.It is easy to become famous.
(C)
I remember my first fire.I was the second volunteer on the scene,so there was a pretty good chance I was going to get in.
When I found the captain,he was having a conversation with the homeowner in a hurry.She was surely having one of the worst days of her life.Here it was,the middle of the night,she was standing outside in the pouring rain,under an umbrella,without shoes,while her house was in fire.
The other volunteer who had arrived just before me--let’s call him Lex Luther-came first and was asked to go inside and save the homeowner’s dog.
Well,I was next.The captain waved me over.He said,“Bezos,I need you to go into the house.I need you to go upstairs,and I need you to get this woman a pair of shoes.”So,not exactly what I was hoping for,I went-up the stairs, down the hall,past the‘real’fire fighters,who were pretty much done putting out the fire at this point,into the master bedroom to get a pair of shoes.
Now I know what you’re thinking,but,I’m no hero.A few weeks later,the department received a letter from the
homeowner thanking us for the valiant effort displayed in saving her home.The act of kindness she noted above all others:someone had even got her a pair of shoes.
So as I look around this room at people who either have achieved,or are on their way to achieving,remarkable levels of success,I would offer this reminder:don’t wait.Don’t wait until you make your first million to make a difference in somebody’s life.If you have something to give,give it now.
Not every day is going to offer us a chance to save somebody’s life,but every day offers us an opportunity to affect one.So get in the game.Save the shoes.
()7.Who was Bezos?
A.a volunteer
B.the captain
C.a fire fighter
D.the homeowner
()8.Why does the writer say“but I'm no hero”?Because____________.
A.he didn’t get the shoes successfully
B.the captain put out the fire successfully
C.the first volunteer was a hero
D.he thought the fire fighters did a good job
()9.Which of the following sayings is similar to“Save the shoes”?
A.Do as the Romans do
B.Do it now
C.Do you would be done by
D.Do well and have well
(D)
For thousands of years,people have lived with dogs.Ancient paintings on the walls of caves show people living with dogs.In each county,dogs come in a wide variety of shapes and sizes.
The largest dogs in the world was Zorba,a huge mastiff that passed away in1990.When Zorba was seven years old in1989,he was94centimeters(37inches)tall.In other words,Zorba was more than half as tall as an adult man.At his largest,Zorba weighed more than a heavy weight boxer at156kilograms(343pounds).
In comparison,the smallest dog ever was a Yorkshire terrier named Sylvia from England.This dog only the size of a matchbox,measuring just over six centimeters(2.5inches)tall and just under nine centimeters(3.5inches)from nose to tail.The dog weighed about half as much as this book,and even a young child could easily pick it up with one hand.It died in1945when it was only two years old.Some dogs are remarkable,not for their size,but for their brain.One incredible dog is Endal,the companion of a man named Allen Parton,who has used a wheelchair since a car accident in 1991.
In2001,Parson was hit by a car while crossing a road with Endal,and thrown out of his chair.Endal quickly moved Parton into the recovery position covered him with a blanket,and pushed his mobile phone close enough for him to reach. Then,once he saw that Parton was all right,Endal ran back and forth to a nearby hotel,barking until people came out to help.
Endal was rewarded for his bravery by being awarded a medal,and he has been the subject of a number of TV documentaries.
()10.What is the main topic of the passage?
A.Dogs are special in some way
B.Dogs that have helped their owners.
C.Three popular kinds of dogs
D.The best dogs in a competition
()11.Which sentence about Zorba is true?
A.He was taller and heavier than an adult
B.He was heavier,but not taller than an adult man
C.He was taller,but not heavier than an adult man
D.He was neither heavier nor taller than an adult man
()12.According to the passage,the world’s smallest dog weighed as much as____________
A.a child’s hand
B.a matchbox
C.half this book
D.Zorba
()13.What does the underlined word“incredible”mean in this passage?
A.wonderful
B.awful
C.excited
D.unbelievable
四．词汇运用
根据句意和汉语注释，在答题卡对应题号的横线上，写出单词的正确形式。
1.You could see from his face that he was____________(撒谎).
2.I thought about what she had said and stayed____________(醒着的）all night.
3.—Ouch,the split milk has made a terrible____________(乱七八糟)on the carpet.
4.The weather is so nice.It is____________(高度地)possible that I’ll go walking outside.
根据句意，在答题卡对应题号的横线上，写出括号内所给单词的适当形式。
5.Trump made the announcement in a____________(speak)on television.
6.Fame(成名)is often____________(simple)a matter of being in the right place at the right time.
7.—May looks sad today.Do you know what has happened?
—I hear that she had her purse____________(steal)on the bus
8.Please cheer____________(you)up by playing this game at the beginning of this activity,guys.
五．动词填空
1.—Have you seen Mr.Black,a tall man?
—Yes,he____________(fix)the washing machine for Granny Li.This way,please.
2.As the story____________(develop),the truth is discovered little by little.
3.—Are you going to Hong Kong for further study after graduation?
—Well.I____________(not decide).I may make some other choices.
4.—Tom,what did your teacher suggest to improve your spoken English yesterday?
—____________(read)aloud as often as possible.
5.The purpose of new technology is to make life we have been used to easier,____________(not make)it more difficult.
6.On April4th this year,people all over China____________(ask)to join in three minutes’silence to pay respect to the victims of the pandemic.
六．阅读填空
Everyone speaks a language,but language is not just for talking.It is our most important communication tool.Through language,we can tell other people what we think,how we feel,and what we need.In fact,civilization(文明) itself depends on our ability to communicate.
In the long history of human,languages survive,grow,disappear,move from place to place,and change with time. There are about6,000different living languages around the world today.and there are many thousands more that are no longer in https://www.doczj.com/doc/4414438481.html,nguages might sound different,but they are thought to have come from a single ancient language.
Nobody knows exactly when people first started using languages.Some scientists say that people first spoke to one another about two million years ago.
Today,our-complicate(复杂的)languages get fully used in the magazines,novels,science books,and movies that fill our libraries and bookstores.As humans,it is important that we can tell the long stories,which separates us from the great apes(类人猿).Other animals may use kinds of methods to communicate,but we humans can send complicated messages through space and time.
Throughout history there were many languages that served as a lingua franca(通用语)---a common language that could serve as a bridge between people of different cultures.Today,English is the main language that plays that role around the world.Many people have studied English as a second or third language.
Language helps people to work together,to share knowledge,feelings,and build up modern societies.The development to humanity’s many languages was an important process that helped humans move forwards towards civilization.
Language
The introduction of language ●With the help of language,we tell others our1,feelings and needs.
●Our ability to communicate leads to civilization.
1._________________
2._________________
3._________________
4._________________
5._________________
七．完成句子
1.新冠肺炎极易传染，人们很难控制它的蔓延。
CONVID-19is so infectious that people_________________the spread of this disease.
2.我想知道无锡的第一条地铁已通车多久了。
I wonder how long the first underground in Wuxi_________________.
3.因为长的相像，小时候她经常被误认成她妹妹。
She_________________her younger sister at an early age because they look alike.
4.你仔细观察后，才能发现这两张画的区别。
You won’t find out the difference between the two pictures_______________________them.
5.目前实践证明，中国的制度比起别国的制度有着很多优势。
Now practice has proved that the system of China__________________________________others.
6.欢迎你随时告诉我们你不满意的地方。
You’re welcome to let us know what__________________________________at any time.
八．书面表达
回顾初中三年,你在学习、生活等方面取得了优异的成绩，这些成绩的背后离不开老师的辛勤教诲，家长的次次鼓励，还有…...，你很感谢他们，你校英语报“Have you say ”栏目正向即将毕业的你们征集感恩主题的征文。假设你叫刘奇，请以Say “thanks ”to________为题，并结合具体事例，写一篇英语短文，参加此次征文活动。要求：1.短文不得出现任何真实人名，校名和相关信息；
2.短文需包含提示要点，要求语句通顺，意思连贯，符合愿意;
3.词数在90个左右，开头已给出。（开头不计入词数）
提示：1.Introduce the person you want to thank.(appearance,personality...)
2.Explain the reason why you want to thank her/him.
3.Express the way you want to thank her/him.
Say “thanks ”to________
Looking back on the past three years,I'd like to say“thanks”t o _________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Some facts about languages ●T here are about 6,000different languages that are being 2around the
world.●
People started to speak to one another two million years ago,according to some scientists.●
Human’s languages make it 3for us to send complicated messages through space and time.●
English is used most 4around the world today.The 5of language ●L anguage helps people to work together,to share knowledge,feelings,and
build up modern scientists.
●
The development of humanity’s many languages was an important process
that helped humans move towards civilizations.
答案
一、单项选择（本大题共14分，每小题1分）
1—14ABDAD CBCDB ACDB
二、完形填空（本大题共10分，每小题1分）
15.-24ACB DA.BABDC
三、阅读理解（本大题共26分，每小题2分
25---37BBD ACB ADB ABCD
四、词汇运用（本大题共8分，每小题1分）
38.lying.39.awake40.mess41.highly
42.speech43.simply44.stolen45.yourselves
五、动词填空（本大题共6分，每小题1分）
46.is fixing47.develops48.haven’t decided49.Reading50.not to make
51.were asked
六、任务型阅读（本大题共5分，每小题1分）
https://www.doczj.com/doc/4414438481.html,ed/spoken54.possible55.widely56.value/importance
七、完成句子（本大题6分，每小题1分）
57.have great difficulty(in)controlling
58.has been in use/service
59.was often mistaken for
60.until/before you take a close look at
61.has many advantages over that of
62.you are not satisfied with
无锡市天一实验学校初三数学模拟试题 2010．3 注意事项：1.答案一律写在答卷上，写在试卷上无效。 2.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. 一、精心选一选（本大题共有7小题，每小题3分，共21分．） 1.下列计算正确的是 ( ) A. 325 2a a a += B. 32 6 (2)4a a -= C. a 2·a 3＝a 6 D. 623a a a ÷= 2. 不等式组213 3 x x +?? >-?≤的解集在数轴上表示正确的是（ ） 3．下列调查适合作普查的是（ ） A ．了解在校大学生的主要娱乐方式 B ．了解无锡市居民对废电池的处理情况 C ．日光灯管厂要检测一批灯管的使用寿命 D ．对甲型H1N1流感患者的同一车厢的乘客进行医学检查 4．用四个全等的矩形和一个小正方形拼成如图1所示的大正 方形，已知大正方形的面积是144，小正方形的面积是4, 若用x ，y 表示矩形的长和宽(x ＞y )，则下列关系式中不正 确的是 A ．x +y =12 ． B ．x －y =2． C ．xy =35． D ．x 2 ＋y 2 =144． 5．图2是由几个相同的小正方体搭成的一个几何体，它的俯视图是（ ） 6． 已知33-=-y x ，则y x 35+-的值是（ ） A ．0 B ．2 C ．5 D ．8 7.如图3，直线3 33 y x = +与x 轴、y 轴分别相交于A B ， 两点，圆心P 的坐标为(1 0)，，圆P 与y 轴相切于点O ．若将圆P 沿x 轴向左移动，当圆P 与该直线相交时，横坐标为整数的点P 的个数是 ( ) A. 2 B. 3 C. 4 D. 5 二、细心填一填（本大题共有12小题，15空， 每空2分，共30分．） -3 1 0 A ． -3 1 0 B ． -3 1 0 C ． -3 1 0 D ． 图2 A ． B ． C ． D ． O y B A 图3 P 图1 y x
2020年高考数学第一次模拟试卷 一、填空题（共14个小题） 1．已知集合A＝{x|0＜x＜2}，B＝{x|﹣1＜x＜1}，则A∩B＝． 2．复数z＝（i为虚数单位）的虚部为． 3．函数的定义域为． 4．在编号为1，2，3，4，5且大小和形状均相同的五张卡片中，一次随机抽取其中的两张，则抽取的两张卡片编号之和是偶数的概率为． 5．在平面直角坐标系xOy中，若双曲线（a＞0，b＞0）的离心率为，则该双 曲线的渐近线方程为． 6．某种圆柱形的如罐的容积为128π个立方单位，当它的底面半径和高的比值为时，可使得所用材料最省． 7．在平面直角坐标系xOy中，双曲线的右准线与渐近线的交点在抛物线y2＝2px 上，则实数p的值为． 8．已知α是第二象限角，且，tan（α+β）＝﹣2，则tanβ＝． 9．已知等差数列{a n}的前n项和为S n，若S3＝6，S6＝﹣8，则S9＝． 10．在平面直角坐标系xOy中，已知直线l：y＝与函数f（x）＝sin（ωx+）（ω＞0）的图象在y轴右侧的公共点从左到右依次为A1，A2…，若点A1的横坐标为1．则点A2的横坐标为． 11．设P为有公共焦点F1，F2的椭圆C1与双曲线C2的一个交点，且PF1⊥PF2，椭圆C1的离心率为e1，双曲线C2的离心率为e2，若e2＝3e1，则e1＝． 12．如图，在△ABC中，AB＝AC＝2，，，AE的延长线交BC边于点F，若，则＝．
13．已知函数f（x）是定义在R上的奇函数，其图象关于直线x＝1对称，当x∈（0，1]时，f（x）＝﹣e ax（其中e是自然对数的底数），若f（2020﹣ln2）＝8，则实数a的值为． 14．已知函数（其中e为自然对数的底数），若关于x的方程f2（x） ﹣3a|f（x）|+2a2＝0恰有5个相异的实根，则实数a的取值范围为． 二、解答题 15．如图，在斜三棱柱ABC﹣A1B1C1中，已知△ABC为正三角形，D，E分别是AC，CC1的中点，平面AA1C1C⊥平面ABC，A1E⊥AC1． （1）求证：DE∥平面AB1C1； （2）求证：A1E⊥平面BDE． 16．在△ABC中，角A，B，C的对边分别为a，b，c，且． （1）若a＝5，，求b的值； （2）若，求tan2C的值． 17．截至1月30日12时，湖北省累计接收揭赠物资615.43万件，包括医用防护服2.6万套，N95口罩47.9万个，医用一次性口罩172.87万个，护目镜3.93万个等．某运输队接到给武汉运送物资的任务，该运输队有8辆載重为6t的A型卡车，6辆载重为10t的B型卡车，10名驾驶员，要求此运输队每天至少运送720t物资．已知每辆卡车每天往返的次数：A型卡车16次，B型卡车12次；每辆卡车每天往返的成本：A型卡车240元，B型卡车378元．求每天派出A型卡车与B型卡车各多少辆，运输队所花的成本最低？ 18．在平面直角坐标系xOy中，椭圆C：的右准线方程为x＝2，
无锡天一中学2017~2018学年度初三中考三模数学试卷 2018．5 一、选择题（本大题共10小题，每小题3分，共30分．在每小题所给出的四个选项中，只有一项是正确的，请把正确的选项填在相应的括号内） 1．下列计算正确的是 A ．22434x x x += B ．2 3 4 22x y x x y ?= C ．3 3 2 (6)32x y x x ÷=D ．2 2 (3)9x x -= 2．下列式子中，是最简二次根式的是 A B D 3．若关于x 的方程2 (1)210m x x -++=有两个不相等的实数根，则m 的取值范围是 A ．2m >B ．2m
弧；⑤平分弦的直径垂直于弦，其中正确的个数有 A ．1个 B ．2个 C ．3个 D ．4个 9．如图，正方形ABCD 的边长为4，点E 是AB 上的一点，将△BCE 沿CE 折叠至△FCE ，若CF ，CE 恰好与以正方形ABCD 的中心为圆心的⊙O 相切，则折痕CE 的长为 A ．433B ．833 C ．5 D ．25 第10题 第9题第15题 10．如图，在Rt △ABC 中，∠C ＝90°，AC ＝6，BC ＝8，在△ABC 内并排（不重叠但可以有 空隙）放入边长为1的小正方形纸片，第一层小纸片的一条边都在AB 上，首尾两个正方形各有一个顶点分别在AC 、BC 上，依次这样摆放上去，则最多能摆放的小正方形纸片的个数为 A ．14 B ．15 C ．16 D ．17 二、填空题（本大题共8小题，每小题2分，本大题共16分．不需要写出解答过程，只需把答案直接填写在相应的横线上） 11．函数13y x = -+中自变量x 的取值范围是▲． 12．分解因式：22416a b -＝▲． 13．地球与太阳之间的距离约为149600000千米，这个数据用科学记数法表示为▲
江苏省无锡市天一中学2011-2012学年八年级上学期 期末考试试题（数学） 学校：班级： 姓名：考号： 注意事项： 1、本试题分为卷Ⅰ（选择题）和卷Ⅱ（非选择题）两部分。时间：90分钟，总分：120分 （含卷面分10分） 2、请将卷Ⅰ选择题的答案答在答题表中。 卷Ⅰ（选择题 共36分） 一、选择题：（本大题共12个小题，每小题3分，共36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. 9的平方根是 （ ） A 、3 B 、±3 C 、3 D 、±3 2．下列汽车的徽标中，是中心对称图形的是 （ ） 3．下列计算正确的是 （ ） A 、9)9(2-=- B 、525±= C 、1)1(33 -=- D 、2)2(2-=- 4．点P （3，-5）关于y 轴对称的点的坐标是 （ ） （A ）（-3，-5） （B ）（5，3） （C ）（﹣3，5） （D ）（3，5） 5．一次函数与的图象如图，则下列结 论： ①k ＜0；②a ＞0；③b ＞0；④当x ＜3时，1y ＜2y 中，正确的个数 （ ） A ．0 B ．1 a b + 第5题图 1y kx b =+2y x a =+
6、关于函数y =－2x ＋1，下列结论正确的是（ ） A ．图象必经过（－2，1） B ．y 随x 的增大而增大 C ．图象经过第一、二、三象限 D ．当x >1 2时，y <0 7、如图，在矩形ABCD 中，AB=8，BC=6，E 、F 是AC 的三等分点。则△BEF 的面积为（ ） A ．12 B ．8 C ．6 D ．无法计算 8、若5 2-y x b a 与x y b a 225-是同类项，则（ ） A ．13x y =-??=? B ．21x y =??=-? C ．02x y =??=? D ．31x y =??=? 9．观察图（1）图案，在A 、B 、C 、D 四幅图案中，能通过图案(1)的平移得到的是 （） 10. 一次函数y =x -1的大致图象是（ ） 11、某班为筹备元旦联欢晚会，在准备工作中，班长对全班同学爱吃什么水果作了民意调查，再决定最终买哪种水果，下面的调查数据中，他最关注的是（ ） A ．中位数 B ．平均数 C ．加权平均数 D ．众数 12．某粮食生产专业户去年计划生产水稻和小麦共15吨，实际生产17吨，其中水稻超产
无锡市天一实验学校2017年春学期 初三英语期中试卷(2017.04) 第I卷（客观题共50分） 一、单项选择在A、B、C、D四个选项中，选出可以填入空白处的最佳选项，并在答题 卡上将该项涂黑。（本大题共14小题，每小题1分，共14分） 1. — What do you think of the voice of Adele who won 2017 Grammy Awards? — Oh, I’ve never heard ________ one. A. the best B. a best C. a good D. a better 2. — Where are you going for your summer holiday? — We ________ go to Yun Nan, but we haven’t decided yet. A. should B. will C. may D. must 3. Animal signs or star signs don’t really influence your personality. It is you who ________ your life and your future. A. shine B. shape C. show D. shut 4. Sometimes nobody closes the door before leaving because everybody thinks ________ will do it. A. anybody B. everybody C. somebody D. nobody 5. — Are you willing to buy something big like a house from online shops? — It sounds great ________ I won’t do that. A. but B. unless C. though D. since 6. — Mum, I’ve got a chance to be an exchange student to the UK next year! — Really? That’s just ________ to be true. Anyway, congratulations, baby! A. good enough B. well enough C. too good D. too well 7. ―Thanks for inviting me, but ballet isn’t really my cup of tea.‖—This really means ________. A. I don’t like a cup of tea. B. I prefer something else to tea. C. Ballet is my favourite. D. I don’t like ballet. 8. — Look! There’s an island over there. — Yes. It’s too far away from the land. I think it must be ________ visited by ships. A. often B. usually C. seldom D. always 9. It’s ________ you to sit there doing nothing at all while others are so busy. A. stupid of B. stupid for C. wise of D. wise for 10. — I wonder what Mr. Wang asked you just now? — He asked________ . A. whether I will take part in the singing competition B. how long I have bought my new bike C. what was wrong with my old bike D. how much money did I spent on books 11. — The girl ________ for the lead role in the film but was refused. — What a pity! A. tried up B. tried out C. tried to D. tried on 12. — I think the plan is just a waste of time. What do you think?
试卷第1页，总13页 绝密★启用前 2019年江苏省无锡市天一实验学校中考二模英语试题 1．答题前填写好自己的姓名、班级、考号等信息 2．请将答案正确填写在答题卡上 第I 卷（选择题) 请点击修改第I 卷的文字说明 一、单选题 1．—Why did your family buy a second-hand car? —We couldn’t afford a new one, but even an old one is better than _________. A ．no B ．none C ．either D ．neither 2．Comics Vater & Sohn are very interesting books. We believe children can __________ quite well without knowing the exact meaning of each word. A ．get over B ．get in C ．get along D ．get through 3．---Put your best foot forward. Do you know__________ you are to success? ---Thanks a million. A ．how far B ．how long C ．how close D ．how much 4．On the highway, drivers _________ drive much too carefully and safely all the time. A ．shouldn’t B ．mustn’t C ．needn’t D ．can’t 5．In an important game like this one, every minute ___________. So let’s go for it! A ．lasts B ．works C ．counts D ．helps 6．—Good news! China won a gold at PyeongChang Winter Olympic Games. —______，we won six silvers. A ．Moreover B ．However C ．Instead D ．Otherwise 7．—Could you take out the rubbish and do the dishes ，Tony ？ —Sure ，Mom will be mad if she sees this _________，I think ． A ．matter B ．mess C ．trouble D ．difficulty 8．—Who does the cooking when your parents are not at home?
2004年晋升为四星级高中：（第一批） 1.一中全称：无锡市第一中学 2.辅仁高中全称：无锡市辅仁高级中学 3.省锡中全称：江苏省锡山高级中学 4.天一中学全称：江苏省天一中学 5.梅村高中全称：江苏省梅村高级中学 6.太湖中学全称：江苏省太湖高级中学 7.羊尖中学全称：江苏省羊尖高级中学 8.怀仁高中全称：江苏省怀仁高级中学 9.玉祁高中全称：江苏省玉祁高级中学 2006年晋升为四星级高中： 10.市北高中全称：无锡市市北高级中学 11.洛社高中全称：无锡市洛社高级中学 12.三中全称：江苏省无锡市第三高级中学
无锡13所初中排名 1、大桥中学 优势： 1、大桥中学学风较好，孩子们相互竞争，有良好的学风。 2、大桥中学教学质量一直比较排名靠前。 3、大桥中学有直升名额，借读生成绩比较好，也可直升。 4、大桥中学借读生，可以通过自主招生和计划外考取其他四星级高中 劣势： 1、大桥中学尖子生云集，竞争激烈，孩子学习压力大。 2、大桥实验学校学生数量相对较小，中考名额分配较小，借读更不享有分配名额。 3、大桥实验学校正常学费每学期6000元左右，费用偏高，借读生还要在学籍所在学校缴纳一定费用，花费比较大。 2、辅仁中学 优势： 1、辅仁初中是无锡一流初中。最近几年的成绩不错，2011年中考成绩超过外国语。 2、辅仁初中年级排名前五十，一般都能得到辅仁高中的签约。一部分能直接进入辅仁高中的双语班A班。据统计，辅仁初中65%的学生能进入辅仁高中。 3、无锡市民办辅仁中学是一所管理满严格的学校,教学水平很好。 劣势： 1、辅仁中学与辅仁高中之间没有直接关系，辅仁高中是公办的，辅仁初中是民办的。 2、辅仁中学是平行分班。 3、公办快班和辅仁差距不大，择校要考虑距离远近的问题。 4、交通不是很方便。 5、费用较高。 3.天一中学 优势： 1、学籍 学籍是选择公办中学的一个重要因素。天一实验学校本区内学校集中转移学籍相对容易，跨区则需要自己解决学籍问题。 2、分配名额 名额多 天一实验班级前十能获得分配名额，天一实验学校相比于省锡中实验学校，分配名额较多。省锡中五四班由于无法解决学籍问题，会占掉部分省锡中实验学校的分配名额。
九年级英语第一次模拟试卷 一、单项选择 1.Life is like _______ ocean. Only ______ strong-willed can reach the other side. A.a; / B. the; a C. an; the D. /; a 2.— __________ is it from your home to the nearest supermarket? —Nearest? Let me see. About five minutes’ ride. A.How long B. How far C. How often D. How soon 3.Put such dangerous things as medicine, knives and lights ________ the reach of children. A.in B. within C. beyond D. over 4.— Does your mother have any hobbies? —No, ________ you call watching TV a hobby. A.if B. unless C. until D. when 5.You ______ pay too much attention to your pronunciation, as it is so important in the oral test. A.shouldn’t B. mustn’t C. can’t D. needn’t 6.— Do you drink much coffee as before? —No, _________ at all. My sleeping problem is getting worse. A.Little B. none C. nothing D. anything 7.— All right. I’ll take it. But I tell you, it is the last time I will ______ this kind of work. —Come on, Buddy! Don’t be so serious. A.take off B. take on C. take out D. take up 8.— There is something wrong with my new shower. I’ll return it to the shop tomorrow. —How come? Are you sure you put it in __________? A.carefully B. peacefully C. wisely D. properly 9.— What do you think of your school, Linda? —It’s a good place for us to _________ ourselves for the future. A.promise B. prepare C. prove D. present 10.You should go to see him since he is so seriously ill. __________, he is your brother.
2019年江苏省无锡市锡山区天一中学中考数学一模试卷一、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项中，只有一项是正确的，请把正确的选项填在相应的括号内） 1．函数y＝2﹣中，自变量x的取值范围是（） A．x＞﹣3B．x≥﹣3C．x≠﹣3D．x≤﹣3 【分析】根据二次根式的性质，被开方数大于或等于0，可以求出x的范围． 【解答】解：根据题意得：x+3≥0， 解得：x≥﹣3． 故选：B． 【点评】本题考查了函数自变量的取值范围问题，函数自变量的范围一般从三个方面考虑：（1）当函数表达式是整式时，自变量可取全体实数； （2）当函数表达式是分式时，考虑分式的分母不能为0； （3）当函数表达式是二次根式时，被开方数非负． 2．下列运算正确的是（） A．3x2?4x2＝12x2B．x3+x5＝x8 C．x4÷x＝x3D．（x5）2＝x7 【分析】A、利用单项式乘单项式法则计算得到结果，即可做出判断； B、原式不能合并，本选项错误； C、原式利用同底数幂的除法法则计算得到结果，即可做出判断； D、原式利用幂的乘方运算法则计算得到结果，即可做出判断． 【解答】解：A、3x2?4x2＝12x4，本选项错误；
B、原式不能合并，错误； C、x4÷x＝x3，本选项正确； D、（x5）2＝x10，本选项错误， 故选：C． 【点评】此题考查了同底数幂的除法，合并同类项，积的乘方与幂的乘方，以及单项式乘单项式，熟练掌握法则是解本题的关键． 3．A，B是数轴上两点，线段AB上的点表示的数中，有互为相反数的是（）A．B． C．D． 【分析】数轴上互为相反数的点到原点的距离相等，通过观察线段AB上的点与原点的距离就可以做出判断． 【解答】解：表示互为相反数的点，必须要满足在数轴原点0的左右两侧， 从四个答案观察发现，只有B选项的线段AB符合，其余答案的线段都在原点0的同一侧，所以可以得出答案为B． 故选：B． 【点评】本题考查了互为相反数的概念，解题关键是要熟悉互为相反数概念，数形结合观察线段AB上的点与原点的距离． 4．在平面直角坐标系中，将点P向左平移2个单位长度后得到点（﹣1，5），则点P的坐标是（）A．（﹣1，3）B．（﹣3，5）C．（﹣1，7）D．（1，5） 【分析】利用平移规律计算即可得到结果． 【解答】解：由题意知，点P的坐标为（﹣1+2，5），即（1，5），
赴天一中学学习心得 高三二部：胡迎会 我有幸被学校领导选派参加在无锡天一中学举行的第六届全国“聚焦课堂—课堂教学文化研讨”活动。这次学习，让我大开眼界，同时也有许多收获。 感受名校的风采。天一中学这个名字已然是很霸气的了，事实上也是名副其实。走进校园一股名校的大气扑面而来。喷泉，长廊，奇石，如茵的草地，盛开的鲜花，潺潺的小溪……无不让我感受到她的底蕴。学生在这样的环境中学习，自然会具备非凡的气质。天一中学的教师个个精神饱满，儒雅潇洒，待人彬彬有礼。而学生则奋发向上，朝气蓬勃。这些都引起我的触动。 见识多彩的课堂。这次全国的“聚焦课堂—课堂教学文化研讨”的活动，影响很大，有来自全国19个省市的教师参加。这次活动的主要形式是“同课异构”。由三个不同的老师来共同执教同一篇课文—刘亮程的《今生今世的证据》。三位老师各显神通，着实让我大开眼界。我从他们身上学到了许多经验。天一中学的卫晓燕老师，上课时结合学生的经历以及教师自身的经历，来谈“证据”、“证明”。这样做拉近了学生与文本的距离，同时也拉近了学生与老师的距离，便于教学的展开。这说明在平时的教学中，结合师生的切身感受很重要。而常州的程代军老师，则体现了一个男教师思维的广度与深度，课堂的思辨色彩很强。我从他身上看到了理性的光芒。课堂不能流于表面的浅薄的热闹，而是要启发学生进行深入的思考。这样才能体会文章
的深邃的思想。人民大学附属中学的陈莲春老师，则展现出一个语文教师的魅力。她把教材中“月是故乡明”这一专题中的篇目巧妙的用一首小诗连缀起来，并配乐朗诵。这样做既体现了课文在教材中的地位，同时也创设了美好的情境，把学生带入课文。教师适当的展示自身的魅力，可以引起学生的崇拜，从而激发学习的兴趣。古语说得好“亲其师而信其道”。学生崇拜一个老师那自然容易把那门学科学好。做一个老师还是应该有两把刷子的。另外，陈老师在这一堂课中还把阅读和写作有机的结合起来，收到了很好的效果。总之我从他们身上感受到大师的风范，让我受益匪浅。 今后我会努力地把学到的经验运用到教学实践中去，争取用优异的成绩向领导交一份满意的答卷。
无锡市天一实验学校2020年春学期七年级语文阶段检测试卷 一、积累与运用（共18分） 1.下列各组词语中读音和书写都有错误的一项是（）（3分） A.胸脯．（pǔ）相辅相承．（chéng） B.腻．味（nì）人才济济．（jì） C.云宵．（xiāo）初露头角．（jiǎo） D.殷．红（yīn）相得益彰．（zhāng） 2.下列句中加点的词语使用正确的一项是（）（3分） A.我们登上山巅，仰望 ．．旖旎壮丽的山川，留存美丽的风景。 B. 他设计用现代建筑材料在罗浮宫的拿破仑庭院内建造一座玻璃金字塔，此事在法 国引起了轩然大波 ．．．．。 C.古旧的街道，颓唐 ．．的老屋，让我对这个古镇有了新的认识。 D. 当时暴雨如注，满路泥泞，汽车已无法行走，抢险队员们只好安步当车 ．．．．，跋涉一个多小时赶到了大坝。 3.下列文段中，加点字词的解释有误的一项是（）（3分） 明日，普又以其人奏，太祖怒，碎裂 ．．不变，跪而拾之以归。 ．．奏牍掷地，普颜色 他日补缀旧纸，复奏如初。太祖乃．悟，卒．用其人。 A.碎裂：把……撕碎 B.颜色：脸色 C.乃：于是，就 D.卒：终于 4.下列句子没有语病的一项是（）（3分） A.通过汉字书写大赛，使人们重拾汉字之美，也就越发珍惜纸质时代的美好。 B.华人游子用他们所钟爱的音乐方式，在过去的岁月中创作了优秀的大量的歌曲。 C.为了优化育人环境，提升办学水平，学校加快了校园环境改造的速度和规模。
D.深受人们喜爱的中国京剧脸谱艺术，被公认是中华民族传统文化的标识。 5.下列句子顺序正确的一项是（）（3分） ①那该是大自然在多长的时间里的杰作！ ②我们居住的这个星球在最古老时代原是一个寂寞的大石球，没有一层土壤。 ③想一想肥沃土地的来历，你会不由得涌起一种遥接万代的感情。 ④经过了多少亿万年，太阳风雨的力量，原始生物的尸骸，才给地球造成了一层层的土壤，每经历千年万年，土壤才增加薄薄的一层。 ⑤想一想我们那土壤厚达五十米的华北黄土高原吧！ A. ③②④⑤① B.③⑤①②④ C. ⑤①③②④ D. ⑤②③④① 6.《西游记》中下列故事情节发生在“黄风岭唐僧有难”之前的一项是（）（3分） A.悟空一借芭蕉扇 B. 八卦炉逃大圣 C.猪八戒义激猴王 D. 车迟国猴王显法 二、阅读与赏析（38分） （一）（4分） 湖上 徐元杰 花开红树乱莺啼，草长平湖白鹭飞。 风日晴和人意好，夕阳箫鼓几船归。
2021年江苏省无锡市锡山区天一中学高考数学二模考前热身试卷 一、单选题（本大题共8小题，共40.0分） 1. 如图所示，A ，B 是非空集合，定义集合A#B 为阴影部分表示的集合.若x ， y ∈R ，A ={x|y =√2x ?x 2}，B ={y|y =3x,x >0}，则A#B 为( ) A. {x|0
无锡天一实验学校历年小升初数学试题（二） 一、填空题： 1．用简便方法计算： 2．某工厂，三月比二月产量高20％，二月比一月产量高20％，则三月比一月高______％．3．算式： （121+122+…+170）-（41+42+…+98）的结果是______（填奇数或偶数）． 4．两个桶里共盛水40斤，若把第一桶里的水倒7斤到第2个桶里，两个桶里的水就一样多，则第一桶有______斤水． 5．20名乒乓球运动员参加单打比赛，两两配对进行淘汰赛，要决出冠军，一共要比赛______场． 6．一个六位数的各位数字都不相同，最左一位数字是3，且它能被11整除，这样的六位数中最小的是______． 7．一个周长为20厘米的大圆内有许多小圆，这些小圆的圆心都在大圆的一个直径上．则小圆的周长之和为______厘米． 8．某次数学竞赛，试题共有10道，每做对一题得8分，每做错一题倒扣5分．小宇最终得41分，他做对______题． 9．在下面16个6之间添上+、-、×、÷（），使下面的算式成立： 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6=1997 二、解答题： 1．如图中，三角形的个数有多少？ 2．某次大会安排代表住宿，若每间2人，则有12人没有床位；若每间3人，则多出2个空床位．问宿舍共有几间？代表共有几人？ 3．现有10吨货物，分装在若干箱内，每箱不超过一吨，现调来若干货车，每车至多装3吨，问至少派出几辆车才能保证一次运走？ 4．在九个连续的自然数中，至多有多少个质数？ 无锡天一实验学校历年小升初数学试题 （二）答案 一、填空题： 1．（1/5） 2．（44） ［1×（1+20％）×（1+20％）-1］÷1×100％=44％ 3．（偶数） 在121+122+…+170中共有奇数（170+1-121）÷2=25（个），所以121+122+…+170是25个奇数之和再加上一些偶数，其和为奇数，同理可求出在41+42+…+98中共有奇数29个，其和为奇数，所以奇数减奇数，其差为偶数． 4．（27）
绝密★启用前 江苏省无锡市天一中学2018-2019学年高一下学期期中数学试题（强化班) 试卷副标题 注意事项： 1．答题前填写好自己的姓名、班级、考号等信息 2．请将答案正确填写在答题卡上 第I 卷（选择题) 请点击修改第I 卷的文字说明 一、单选题 1．已知公比大于0的等比数列{}n a 满足13a =，前三项和321S =，则234a a a ++=（ ） A ．21 B ．42 C ．63 D ．84 2．直线a 与直线b 为两条异面直线，已知直线//l a ，那么直线l 与直线b 的位置关系为（ ） A ．平行 B ．异面 C ．相交 D ．异面或相交 3．圆1O ：()()22121x y -+-=与圆2O ：()()22212x y -++=的位置关系为（ ） A ．外离 B ．相切 C ．相交 D ．内含 4．已知点()0,0O ，()0,A b ，()1,1B .若OAB ?为直角三角形，则必有（ ） A ．1b = B ．2b = C ．()()12=0b b -- D ．120b b -+-= 5．如图，在正方体1111ABCD A B C D -中，点 E F ，分别为棱1AB CC ，的中点，在平面11ADD A 内且与平面1D EF 平行的直线
… … 线 … … … … ○ … … … … 线 … … … … ○ … … A．有无数条B．有2条 C．有1条D．不存在 6．已知两个等差数列{a n}与{b n}的前n项和分别为An和Bn，且 745 3 n n A n B n + = +，则使 得n n a b为整数的正整数n的个数是( ) A．2B．3C．5D．4 7．一条光线从点() 2,3 --射出，经y轴反射后与圆()() 22 321 x y ++-=相切，则反 射光线所在直线的斜率为（） A． 5 3 -或 3 5 -B． 3 2 -或 2 3 - C． 5 4 -或 4 5 -D． 4 3 -或 3 4 - 8．已知数列{}n a的前n项和为n S，对于任意的* n N ∈都有2 1 n n S S n + +=，若{}n a为 单调递增的数列，则1a的取值范围为（） A． 11 , 22 ?? - ? ?? B． 11 , 33 ?? - ? ?? C． 11 , 44 ?? - ? ?? D． 11 , 43 ?? - ? ?? 第II卷（非选择题) 请点击修改第II卷的文字说明 二、填空题 9．1l：()1360 m x y +++=， 2 l：()120 x m y +-+=，若 12 // l l，则m=_____. 10．给出下列三个命题：
绝密★启用前 2020~2021学年度第一学期期末调研 高三年级物理试题 注意事项： 1．全卷满分为100分，共三大题、15小题，考试用时75分钟； 2.答卷前，考生务必将自己的姓名、准考证号等填写在答题卡和试卷的指定位置。3．回答选择题时，选出每小题答案后，用铅笔把答题卡上对应题目的答案标号涂黑。 如需改动，用橡皮擦干净后，再选涂其他答案标号。回答非选择题时，将答案写在答题卡上。写在本试卷上无效。 4．考试结束后，将本试卷和答题卡一并交回。 一、单项选择题:本大题共10小题，每小题4分，共40分。每小题只有一个选项符合 题目要求。 1.如图，光滑斜面固定于水平面，滑块A，B叠放后一起 冲上斜面，且始终保持相对静止，A上表面水平。则在 斜面上运动时，B受力的示意图为 A. B. C. D. 2.如图为氢原子的能级示意图，已知可见光光子能量范围为 1.63~3.10eV，若一群氢原子处于n=4能级，则下列说法正 确的是 A.这群氢原子自发向低能级跃迁时能辐射出4种不同频率 的光子 B. 氢原子从n=4能级向n=3能级跃迁过程中发出的光为可见光
C. 用能量为0.40eV 的光子轰击该群氢原子，可以使氢原子受激发而跃迁到n =5能级上 D. 氢原子从n =4能级向n =2能级跃迁过程中发出的光照射逸出功为2.3eV 的金属钠，能使金属钠发生光电效应 3. 如图所示，甲分子固定在坐标原点O ，乙分子位于x 轴上。 两分子之间的相互作用力的合力F 与两分子间距离x 的关 系如图中曲线所示，F ＞0表现为斥力，F ＜0表现为引力， a 、 b 、 c 、 d 为x 轴上四个特定的位置。现把乙分子从a 处 由静止释放，则 A. 乙分子从a 到b 做加速运动，由b 到c 做减速运动 B. 乙分子从a 到c 做加速运动，经过c 点时速度最小 C. 乙分子从a 到c 的过程中，两分子组成的系统的分子势能一直减少 D. 乙分子从a 到d 的过程中，两分子组成的系统的分子势 能一直减少 4. 如图所示，假设月球半径为R ，月球表面的重力加速度为g 0， 飞船在距月球表面高度为3R 的圆形轨道Ⅰ上运动，到达轨 道的A 点点火变轨进入椭圆轨道Ⅱ，到达轨道的近月点B 再次点火进入近月轨道Ⅲ绕月球做圆周运动。则 A. 飞船在轨道Ⅰ上的运行速度为4gR B. 飞船在A 点处点火时，速度增加 C. 飞船在轨道Ⅰ上运行时通过A 点的加速度大于在轨道Ⅱ上运行时通过A 点的加速度 D. 飞船在轨道Ⅲ上绕月球运行一周所需的时间为0 2g R 5. 某同学进行篮球训练，如图所示，将篮球从同一位置斜向上抛出，其中有两次篮球 垂直撞在竖直墙面上，不计空气阻力，则下列说法正确的是
江苏省无锡市天一中学七年级数学下2020期中模拟试卷五 班级 姓名 学号 一．选择题（共10小题，每小题3分，共30分） 1.11()2-等于（ ） A. 12 B. 2 C. 12 - D. 2- 3．计算23(2)a -的结果是（ ） A ．56a - B ．66a - C ．68a D ．68a - 4．已知多项式x 2+kx +64是一个完全平方式，则k ＝（ ） A ．16或﹣16 B ．8 C ．16 D ．8或﹣8 6．下列说法正确的是（ ） A ．同位角相等 B ．在同一平面内，如果a ⊥b ，b ⊥c ，则a ⊥c C ．相等的角是对顶角 D ．在同一平面内，如果a ∥b ，b ∥c ，则a ∥c 7．如果（2x +m ）（x ﹣3）展开后结果中不含x 的一次项，则m 等于（ ） A ．3 B ．﹣6 C ．﹣3 D ．6 5．如图是婴儿车的平面示意图,其中AB ∥CD,∠1=120°,∠3=40°,那么∠2的度数为（ ） A ．80° B ．90° C ．100° D ．102° 8．如图，有一条直的宽纸带，按图折叠，则∠α的度数等于（ ） A ．50 o B ．60 o C ．75 o D ．85 o 2．若实数x,y,z 满足()()()240x z x y y z ----=，则下列式子一定成立的是（ ） A ．x+y+z=0 B ．x+y-2z=0 C ．y+z-2x=0 D ．z+x-2y=0 9．如图是某公园里一处矩形风景欣赏区ABCD ，长AB ＝100米，宽BC ＝50米，为方便游人观赏，公园特意修建了如图所示的小路（图中非阴影部分），小路的宽均为2米，那小明沿着小路的中间，从出口A 到出口B 所走的路线（图中虚线）长为（ ） A ．148米 B ．196米 C ．198米 D ．200米 10.如图，两个正方形边长分别为a 、b ，如果a +b =ab =6，则阴影部分的面积为（ ） A. 6 B. 9 C. 12 D. 18
初三适应性练习（物理） 2021.3 一、选择题：（本题共12小题，每小题2分，共24分．每小题只有一个选项正确） 1.下列关于声现象的说法中，正确的是（▲▲） A．中考期间，学校附近通行的车辆禁止鸣笛，这是在声源处控制噪声 B．因为超声波传播速度比次声波大，所以医学上用超声波检查身体 C．声音在真空中的速度大约340m/s D.“引吭高歌”中的“高”是指歌曲的音调高 2．如图所示的光现象中，由于光的反射形成的是（▲▲） A．笔好像在水面处“折断” B．放大镜把字“放大” C．屏幕上呈现人的影子 D．景物在水中形成“倒影” 3．我们在课堂上学会了许多物理研究方法。下列四个探究实验中，运用了相同研究方法的是（▲▲） ①研究蒸发的快慢与哪些因素有关②研究真空不能传声 ③用水波来理解声波④探究不同材料的隔音性能 A．①②B．①④C．③④D．②③ 4．下列关于热现象的解释正确的是 （▲▲） A. 冬天，司机往水箱里加点酒精是为了提高液体的凝固点 B. 冻豆腐里面的小孔是由于豆腐里的水先凝固后熔化形成的 C. 皮肤上涂一些酒精会感到凉爽是因为酒精蒸发时放热 D. 从冰箱里取出的易拉罐外壁会出现小水滴是水蒸气凝华形成的 5．如图所示的一次性使用医用口罩，由罩体、松紧和铝条组成。佩戴时，罩体紧贴着面部，松紧跨在两耳耳根后，用手指紧压铝条，使口罩上端紧贴鼻梁。然后向下拉伸口罩，覆盖鼻子、嘴巴，关于该口罩，以下说法中正确的是 （▲▲） A. 任何物质的分子都不能通过罩体 B. 压弯的铝条发生的是弹性形变 C. 松紧形变后会对耳根处产生弹力的作用 D. 松紧拉得越长，对耳根处的压强越小 第5题第6题第7题第8题 A B C D