初三英语中考测试题
A1 词汇
1选择与划线部分意思相同或相近的词或短语
1 English is not so difficult as Chinese .
A as easy as
B as difficult as
C less difficult than
.D more difficult than .
2 I?ve looked for it here and there .
A.somewhere B anywhere C ,everywhere Dover there
3 .They will be busy nest Sunday .
A have time
B have time
C be free
D not be free
4 Let?s go to the hospital right away.
A.on time B in time Cat once D at last
5 .There is still half an hour left .Take your time ,please .
A Wait a minute
B Don?t hurry
C Don?t be late
D be
6 . I prefer blue to green .
A. like and B like better than C like either or D like either nor
7The nest morning they found lots of snow on the ground .
A a few
B a little
C many
D much
8We stopped on our way to London for one or two hours .
A one and two hours
B one and a half hours
C one hour or two
D two hours 9Man can?t live without water .
A if there?s no water
B out of water
C in water
D if there?s too much water
10How do you like the dictionary ?
A Why do you like
B Do you like
C What do you think of
D would you like
B)根据下面句子的意思及所给的汉语意思, 写出空缺处单词的正确形式.每空
一词.
6 Everyboby here is busy ____ (采购) for Christmas.
7 It?s _____(好) to go out than to stay at home on such a nice day.
8We have been there once or _____(l两次).
9That girl can?t______(是) Jane . She?s much taller.
10It?s snowed _____(很大) last night and now the streets are covered with snow. 11He?s made quite a few ____( 朋友)since he came to our class.
12When I _______( 到达) the cinema , all the tickets had already been sold out.
13In________( 秋季) leaves of the kind of tree turn red.
14The teacher asked us to take a_________( 仔细) look at everything in the lab. 15The Smiths don?t like ________( ) by air.
II 单项填空
1 We _______ a sports meeting last Saturday.
A helded
B held
C hold
D holded
2 It?s about half___ hour?s talk from here.
A the
B a
C an
D one
3Everyone in the office____ hard when Mr. Smith came in.
A works
B is working
C has worked
D was working
4Each of us ____hard at physics.
A works
B were working Cwork D are working
5Of the three foreigners, one is from London, ___are from Japan.
A another two
B the others two
C the other two
D others two
6So I needn?t tell her, ___I?
A can
B may
C must
D need
7You can call me Bob ,______you should never call me Mr .Bob.
A and
B or
C but
D so
8”Is that Wang Ling speaking ?
“ "
A .Yes .Who?s that ?
B Yes .Who are you ?
C Yes . What?s are you ?
D Yes .Who speaks ?
9 “__________”
“ Two weeks .
A.How long I can borrow the book ?
B.How long may I take the book ?
C.How long may I get the book ?
D.How long may I keep the book ? “
11Will you please ____the light ?
.It?s very dark here
A turn
B to turn Cturn on Dto turn on
12I am sorry to trouble you ,Miss Gao .
______________.
A .Fine , thank you .
B it?s very kind of you
C It doesn?t matter
D The same to you .
13.How often are you late for ____school ?
A in
B for
C to
D at
14He spent almost his whole life ____this book ?
A in writing
B on writing
C to write
D for writing
15Your book is in the desk , but where is ___?
A I
B me
C my
D mine
16The story ___in the nineteenth century .
A was happened
B has happened
C happened
D has been happened
17This TV set is ___of the three .
A cheap
B cheaper
C cheapest
D the cheapest
18 I have ___to my hometown three times since 1980 A gone B been
C got
D reached
19Maths is _____bit difficult for me to learn .
A the Ban C a D /
20We ____to the summer palace if it __tomorrow
A will go ,won?t rain
B go , isn?t rain
C will go ,doesn?t rain
D will go ,not rain
21In spring the weather gets warmer and day gets ____. Along B longer C short Dshorter
22___a clock near the window ?
Yes ,there is .
A Is it
B Does this
C Is there
D Has that
23A new library ____in our school last year ./
A built
B was built
C is built
D has been built
24Be quiet / I have ____to tell you .
A important anything
B anything importing
C important something
D something importing
25I saw him _____under the tree .
A stands
B standing
C to stand
D stood
26Do you know what time ______?
A does the ship leave
B the ship leaves
C was the ship leaving
D the ship was leaving
27What day is today ?
_________________.
A It?s fine . B.It?s March 8. C. It?Wednesday d.it? Saturday morning.
28there is a boat____the bridge.
A.on b.in c.at d.under
29this is the season when you can see _____fall
ing down from trees.
A.leaf
B.leafs c.leaves d.leave
30.The doctow came_____time to save his life.
A.in
B.on c.at d.before
31.John often does______lessons fron eight to nine in the evening.
A.her
B.him
C.his d.one?s
32. One is never ________to learn.
A too old
B quite old
C too older
D old enough
33 Mother told me _______ interesting story last night.
A a
B an
C more
D most
34 I?m still hungry. Could I have two ___ pieces of bread, please?
A much
B many
C more
D most
35 “Would you like this kind of shoes ?”
“Oh ,yes. But may I________?”
A try it on
B try on it
C try them on C try on them
36 There is ___ with my bike . It doesn?t work.
A wrong something
B anything wrong
C something wrong
D wrong nothing
37 If a man?s name is Jim Allan Green,We can call him______.
A Mr.Green
B Mr. Allan
C Mr.Jim
D Mrs. Green
38______Green are our good friends.
A /
B The
C An
D A
39My mother was cooking______Iwas writing.
A because
B before
C when
D while
40Listen! Someone_____ ______in Room 208.
Ais ;singing B are;singing cis;sing
Ddose;sing
III 情景对话
A __31__?
B I want to buy a sweater, please.
A __32__ . Look! There are very mice sweaters. Which do you like?
B I?d like that green one please. Green is my favourite colour.
A__33___. This is the latest fashion this year.
B Yeah, it looks .___34___?
Afour hundred yuan.
Boh, it?s too dear! Can it be cheaper?
A I?m afraid not, sir. Maybe you can try some other shops,sir.
B__35___. I?ll take it.
A What do you want
B What are you looking for
C Do you want to buy something Dwhat can I do for you
32 A This way, please B Go after me
Cgo this way D After me
33 A Here is it B It?s here
C This it is
D It?s here
34 A How much do you like B How many do you have
Chow much is it D How much are they
35A Great BAll right then
C It?s all right
D It?s bad
B) 选择最佳答案补全对话. 每个选项只许用一次.
…Huiming: Hi Mary ._____
Mary :Hi ,Huiming .Glad to see you ,too.
Where did you go during the holiday ?
Huiming : Well , we went to our home town in jingxi to see my grand parents .
Mary :Oh ,they must be very happy to see you again .
Huiming : Sure .
Mary :________
Huiming : My parents took Dick and me to a few cities in the south .
Mary : ____________
Huiming :We visited Shanghai , Nanjing , wuxi and Hangzhou .
Mary : Oh /____I …m sure you had a very good time
Huiming : Yes , we really enjoyed ourselves very much .I hope you can go there when you have time .
Mary : ___________.
A They?re all places of great interest in China
B What did you do, then ?
C Glad to see you again .
D . What cities did you visit ?
E Would you like to come with me ?
F That?s a good idea .
G Is it a very beautiful place ?
C) 选择最佳答案完成对话
W =Mrs White G=Miss Green
W ; Hello /This is Mrs White speaking .______
G ; Good afternoon , Mrs White . This is Miss Green , office secvetary
W : Oh , hello , Miss Green ._______
G : OK . Hold on ,please .( After a while )Sorry , Mrs White is having an important meeting now and he can?t come to your call .____________
W : Oh , dear But we'll have to go to an evening party .
G ; Yes , he knows . _____He?ll drive you to the party .
W ; All right I?ll get everything ready ______
G ; See you later , Mrs White .
W ; see you later .
1 A . Who are you ? B who?s that ?
C . Call Mr White to speak.
D Is Mr White at home ?
2 A May I speak to Mr White ?
B Glad to meet you .
C How are you ?
D May I speak to your father ?
3 A He?s not so kind .
B Do you think so ?
C He asks me to tell you that he can?t return home for dinner , either .
D I …m sure you …ll be angry .
4 A He won?t go B Do you think so ?
C He wants you to come here by bus .
D You?re welcome .
5 A I …ll go by myself . B You?re right .
C That …s all right .
D Thank you
D ) 选择最佳答案补全对话每个选相只许用一次
Anna and Linda are good friend . They meet Martin ,Linda …s friend , in the street .
L :Hello , Martin , ________
M :Hello , Linda , I …m fine . How about you ?
L : Oh , _____This is my friend , Anna . oh Martin .
M ;_______Anna .
M : How do you do ? Are you Japanese ?
A ; Wo, I …m Chinese .
L : She?s staying with us for a week .
M: Oh, good ________
A : Thank you . I …m sure I will .
L : Well , we?re going shopping ._________
M : See you . Come and have tea some day , Anna
A : Thank you . Bye-bye .
A . I hope you …ll enjoy yourself .
B See you some time later .
C How do you do ?
D I …m OK
E How are you ?
F Thank you
G Hello /
IV 完形填空
Last year after I had left a small village in the South of France ,I __1_on to the next town ._2__the way a young man _3__and asked me for a lift . As soon as he
_4_the car , I said … Good morning … to him __5French and he answered in the same language . Except for ___6__words , I don?t know 7__French at all .8__of us spoke . I had nearly __9__the town , when the young man suddenly said very __10 _, Do
you speak English ? I looked at him in surprise . There was no Frenchman speaking English in his town .Only then did I understand that he , too, was an English man .
1 A walked B kept C drove D moved
2 A on B in C To D Into .
3 A stop B stops C stopping D stopped
4 A got on B got in C got into D got out
5 A with B in C by D through
6 A few B little C a little D a few
7 A any B many C some D lot
8 A Other B Another C Either D Neither
9 A left B arrived C got D reached
10 A slow B slower C slowest D slowly
完型填空
Every morning , Tom goes to work by train , As he has a _1__way to go , he always buys a newspaper . It helps to make the time _2__more quickly . __3 ___ Tuesday morning , he 4__a report on an important
Football match . The report was __5_interesting that he forgot to get off . He knew this when he looked out of the window and saw the sea . He got off at _6__station and had _7__a long time for a train back . Of course , he arrived very _8___at the office . His boss was very __9__when he was told Tom was late .
Work is __10__than football / he shouted .
1 A short B long C easy D good
2 A pass B past C to pass D passing
3 A At B In C On D /
4 A opened B looked C turned D found
5 A so B very C much D such
6 A other B another C the other D the next
7 A to wait B wait C waited D waiting
8 A early B fast C quickly D late
9A angry B glad C happy d interested
10A much important B most important C more important D important
Last year after I had left a small village in the South of France ,I ___1___on to the nest town. __2____
the way a young man __3___ and asked me for a lift. As soon as he __4___ the car , I said “Food morning”to him ____5_ French and he answered in the same language. Except for__6__ words.I do not know__7__at all. ___8___ of us spoke. I had nearly ___9__ the town, when the young man suddenly said very__10__ , “Do…you….speak….English?” I looked at him in surprise. There was no Frenchman speaking English in this town. Only then did I
understand that he,too, was an English man.
1 A walked B kept C drove Dmoved
2 A On B In C To D Into
3 A stop Bstops C stopping D stopped
4 A got on B got in C got into D got out
5 Awith B in C by D through
6 A few B little C a little D a few
7 A any Bmany Csome Dlot
8 A Other Banther C Either D Neither
9 A left B arrived C got D reached
10A slow B slower Cslowest D slowly
V 阅读
A
Mr Right hated to be wrong. If he made a mistake, he could never admit ( 承认) it.One day, he was walking along the street when he met another man. He looked at the man very carefully. Then he said,”John Foster! Well ,well, I haven?t seen you for ten years.?
He looked at the man up and down. “But you?ve changed, John,? he went on. “You were heavy, but now you”re thin.” He smiled at him,”Bbut you look well and it?s good to see you again.”
He held the man?s hand and said,”But , oh, you have changed so much . You had thick hair ten years ago and now it?s thin, You didn?t wear glasses before , but now you?re wearing really a pair of thick ones.”
He smiled at the man again.
“But you?re still the same John Foster. Do you remem ber that we often drank tea together? We
had some good times, didn?t we, John??
“Excuse me, sir,” the man said ,”but my name isn?t John Foster.”
Mr Right thought for a minute, then he said, “So you?ve changed your name, haven?t you?”
1 …Which of these is true?
A Mr Right never thought that he would be right.
B Mr Right never admitted that he was wrong.
C Mr Right never made mistakes.
D Mr Right sometimes thought the others were right
2 One day Mr Right met____________
A one of his old friends
B John Foster
C a man he thought he knew
D his good friend
3Mr Right thought John_______
A had changed a lot
Blooked very old C looked as young as before D hadn?t changed much
4 Mr Right didn?t accept ( 接受) that _______
A the man had changed so much
B the man had changed his name
C the man didn?t know John Foster
D the man wasn?t John Foster
5From the story we learn that _____
A Mr right is always right
B John Foster is not the man?s name Cone should admit his mistakes
D one should not make jokes
B
A famous scientist was working in Japan. One day he was invited to give a told to a large group of students. No of them could understand French, So he had to have an interpreter. During his talk he told a funny ((有趣) story that went on for quite a long time . At last he stopped to let the interpreter translate (释译) it into Japanese. To his surprise
,the man did this in a few seconds , and after that all the students laughs loudly .
After the talk , the scientist thanked the interpreter for his good work and then said to him ,?please tell me how did you translate that long story of mine into such a short Japanese one . I didn?t tell the story at all , the interpreter answered
With a smile , I just said … The scientist has just told a funny story , you will all
laugh ,please .?
1 The famous scientist was invited to give a talk at
a large group of ____.
A . English student
B American students
C French students
D Japanese students
2 The scientist needed an interpreter because ___.
Athe students didn?t know him
B he was very famous
C he couldn?t speak
D the students couldn't understand French
4After telling the funny story the scientist stopped ___.
A to have rest
B to talk with the interpreter
B to let the interpreter translate it into Japanese
D to hear the students laugh
5The scientist was surprise because ___.
A .the interpreter was good at his work
B all the students didn?t laugh
C the interpreter translate the long story into a short Japanese one
D the interpreter did his work in a few seconds and the students laughed
loudly
6In fact ____were made to laugh by the funny story .
A none of the students
B all the students
C only a few students
D most of the students
One day Bob took two of his friends into the mountain .They put up their tents (帐篷)and then rode off to a forest to see how the trees were growing .
In the afternoon when they were about ten
Kilometres from their camp ( 营的),It started to snow . More and more snow fell . Soon Bob could hardly see his hands before his face . He could not
Find the road / Bob knew there were two roads . One road went to the camp , and the other went to his house . But all was white now .Everything
Was the same . How could he take his friends back
To the camp ?
Bob had an idea . The horses / Let the horses take them back /
But what would happen if the horses took the road to his house ? That would be a trip of thirty –five kilometres in such cold weather !
It was getting late . They rode on and on . At last the horses stopped ,
Where were they ? None of them could tell . John
Looked around . What was that under the tree ?
It was one of their tents !.
1 John and his two friends went to the forest _
A to build their camp
B to find their way home
C to see the mountain in the snow
D to see the trees
2 They could hardly find their way back because _
A there were only one road to their camp
B they couldn?t decide which of the two roads went to their tents
C there was not any road in the mountains
D everything was covered by snow
3 It is clear that they wanted the horses to take them to __
A John?s house
B the camp
C the forests
D mountains
4The horses stopped because_______
A it was getting late
B they were tired after running for a long time
C they knew that they had got to the camp
D they saw the trees
5 The story happened__________
A on a cold winter day
B on a dark evening
C in a cold camp
D at night when nothing could be B You speak, write a letter, make a telephone call. Your words carry a message. People communicate with words. But do you think you can commmunicate without words?
A smile on your face shows you are happy or friendly. Tears in your eyes till others that you are sad.
When you raise your hand in class, the teacher knows you want to say something or ask questions. You shake your head, and people know you are saying “No. You nod and people know you are saying “Yes”. Other things can also carry messages. For example, a sign at the bus helps you to know
Which bus to take. A sign on the door tells you where to go in or out. Have you ever noticed that there are lots of signs around you and that you receive messages from them all the time? People can communicate in many other ways . An artist can use his drawing to tell about beautiful mountains, about the blue sea and many other things.Books are written to tell about all the wonderful things in the world and also about people and their ideas. Books , magazines, TV, radio and films all help us communicate with others, They all help us to know what is going on in the world and what other people are thinking about.
1People communicate_____
A with words only
B in many different ways
C in litters and with drawings
D with smiles, tears, and hands
2Whech of the following in not mentioned in the passage as things which help us communicate?
Abooks and magazines B TV and films C newspapers D radio
3Communication is important because it can help people to _________
A understand the world and other people better
B teach each other to speak, write, read and draw
C know what other people are thinking about
D learn what?s happening in the world more quickly
4Signs can carry as many______as words
A questions
B examples
C tears and smiles
D messages
55 The best title ( ) for this short passage is ___
A Signs Carry Messages
B the importance of Communication
D Ways of communication
C A SA
D STORY
There are many cats in China. Chinese people are very friendly towards all their cats.
Chen Lee is a school teacher in Henan in China . Chen gad a beautiful white cat, and he loved her very much. But a very sad thing happened one day, A rich man?s car ran over the cat , and that was the end of her ,.Chen ran out onto the road: “Oh,you poor ,dear thing !”he cried .”What shall Ido without you?You were the light of my life.”People stopped and cried with chen .The rich man stopped his car and came back.
He put his arms around Chen and said:”I am very, very sorry about this accident. Please let me …”
“You don?t know! “ Chen cried.”She was a wonderful pupil!”
“A pupil?” the man asked. “This cat? What do you mean ?”
“You can?t buy that cat for all the money in China!” Chen said.”I taught her every day. That cat could talk , sir?”
“ Then I must help you , “ the man said . He took notes from his pocket. “Here, have thes . Three hundred yuan. Is it enough? Will you forgive ( )
me? Can we be friends now?”
Chen took the money . “Thank you,” he said ,”I?ll get another cat. Then I must begin all the work again.”
The rich man went away in his car. A woman said to Chen:”Was it true?Could your cat talk? What could it say?”
“It was true, madam, “ Chen answered. “My cat had many different lessons At last she could say the word CAT
“Everybody laughed What is the Chinese word for cat ?it is MIAO”
61 What was Chen?s jop (工作)?He ______
A taught Bwas teacher Cbought and sold cats Dwas a doctor
62 What was “ Her lessons stopped B Chen sold her to a rich man
C She began to learn
D She died in an accident
63 What could Chen?s cat day? She could say____
A Miao
B the English word cat
C her name
D Chen?s name
64 Why did the people stop and cry with Chen?
A Because they didn?t like the rich man
B Because they thought of their own cats
C Because the cat was dead
D because the cat was a wonderful pupil
65 How many lessons did the cat have according to
Chen Lee?
A three hundred
B one lesson
C many different lessons
D no lessons at all
VI . 书面表达
题是: 根据下面给的表格, 编写一篇短文Ann and Mary 分别收到了笔友Harry and Jean
的电子邮件, 他们俩在谈论笔友的情况。
要求：1 。条理清楚，意思连贯，语句通顺，
标点正确，书写清晰规范；
2要将表中的内容体现于对话中；
3 不得少于10 句话。
Harry ：中国人15 岁喜欢乒乓球家中有三口人8 点上学
Jean ：美国人15 岁喜欢足球家中有6 口人
9 点上学，3 点上学。
2请你向班上的新生Jeff 介绍你学校的教学大楼（teaching building ）。提示：
1 教学大楼位于学校南端，6 层楼；
2 三楼有一个大阅览室两个计算机芳（computer room ）和三个科学（science ）实验室。
3阅览室星期一至星期五开放。
4你们经常在二楼的语音室（sound lab ）上英语课。
5大楼后面有一个，你们可以再那种花。
（词数：80 –100 ）
(实数) (试卷满分150 分，考试时间120 分钟) 一、选择题(本题共10 小题，每小题4 分，满分40分) 每一个小题都给出代号为Ａ，Ｂ，Ｃ，Ｄ的四个结论，其中只有一个是正确的，把正确结论的代号写在题后的括号内．每一小题：选对得4分，不选、选错或选出的代号超过 一个的（不论是否写在括号内）一律得0分。 1．下列命题中，假命题是（）。 Ａ．9的算术平方根是3 Ｂ．16的平方根是±2 Ｃ．27的立方根是±3 Ｄ．立方根等于－1的实数是－1 2．近似数1.30所表示的准确数A的范围是（）。 Ａ．1.25≤A＜1.35 Ｂ．1.20＜A ＜1.30 Ｃ．1.295≤A＜1.305 Ｄ．1.300≤A ＜1.305 3．已知|a|＝8，|b|＝2，|a－b|=b－a,则a+b的值是（）。 Ａ．10 Ｂ．－6 Ｃ．－6或－10 Ｄ．－10 4．绝对值小于8的所有整数的和是（）。 Ａ．0 Ｂ．28 Ｃ．－28 Ｄ．以上都不是 5．由四舍五入法得到的近似数4.9万精确到（）。
Ａ．万位 Ｂ．千位 Ｃ．十分位 Ｄ．千分位 6．一个数的绝对值等于这个数的相反数，这样的数是（ ）。 Ａ．非负数 Ｂ．非正数 Ｃ．负数 Ｄ．正数 7．若2a 与1－a 互为相反数，则a 等于（ ）。 Ａ．1 Ｂ．－1 Ｃ．12 Ｄ．13 8．在实数中π,－25 ,0, 3 ,－3.14, 4 无理数有（ ）。 Ａ．1 个 Ｂ．2个 Ｃ．3个 Ｄ．4个 9．不借助计算器，估计76的大小应为（ ）。 Ａ．7～8之间 Ｂ．8.0～8.5之间 Ｃ．8.5～9.0之间 Ｄ．9～10之间 10．若4a =，23b =，且0a b +<，则a b -的值是（ ）。 Ａ．1，7 Ｂ．1-，7 Ｃ．1，7- Ｄ．1-，7- 二、填空题(本题共 4 小题，每小题 5 分，满分 20 分) 11．数轴上与表示数2的点距离为6个单位长的数 _________。 12．我们的数学课本的字数大约是21万字，这个数精确到 _________位，请用科学记数法表示课本的字数大约是
统计与概率单元测试 1．将100个数据分成8个组，如下表： 则第六组的频数为（） A．12 B．13 C．14 D．15 2．10位评委给一名歌手打分如下：9.73，9.66，9.83，9.89，9.76，9.86，9.79，9.85， 9.68，9.74，若去掉一个最高分和一个最低分，这名歌手的最后得分是（） A．9.79 B．9.78 C．9.77 D．9.76 3．某班50名学生期末考试数学成绩（单位：分）的频率分布条形图如图所示，其中数据不在分点上，对图中提供的信息作出如下的判断：（1）成绩在49.5分～59.5分段的人数与89.5分～100分段的人数相等；（2）成绩在79.5～89.5分段的人数占30%；（3）成绩在79.5分以上的学生有20人；（4）本次考试成绩的中位数落在69.5～79.5分段内，其中正确的判断有（） A．4个B．3个C．2个D．1个 (第3题) (第4题) 4．如图是九年级（2）班同学的一次体检中每分钟心跳次数的频数分布条形图（次数均为整数）．已知该班只有5位同学的心跳每分钟75次，请观察图，指出下列说法中错误的是（） A．数据75落在第2小组 B．第4小组的频率为0.1
C ．心跳为每分钟75次的人数占该班体检人数的 1 12 ; D ．数据75一定是中位数 5．在转盘游戏的活动中，小颖根据试验数据绘制出如图所示的扇形统计图，则每转动一次转盘所获购物券金额的平均数是（ ） A ．22.5元 B ．42.5元 C ．2 56 3 元 D ．以上都不对 (第5题) (第9题) 6．某快餐店用米饭加不同炒菜配制了一批盒饭，配土豆丝炒肉的有25盒，配芹菜炒肉丝的有30盒，配辣椒炒鸡蛋的有10盒，配芸豆炒肉片的有15盒．每盒盒饭的大小、外形都相同，从中任选一盒，不含辣椒的概率是（ ） A ． 78 B ． 67 C ． 17 D ． 18 7．某鞋厂为了了解初中学生穿鞋的鞋号情况，对某中学九（1）班的20名男生所穿鞋号统计如下： 那么这20名男生鞋号数据的平均数是 ，中位数是 ，在平均数、中位数和众数中，鞋厂最感兴趣的是 ． 8．某班50名学生在适应性考试中，分数段在90~100分的频率为0.1，则该班在这个分数段的学生有 人． 9．某班联欢会上，设有一个摇奖节目，奖品为钢笔、图书和糖果,标于一个转盘的相应区域上（转盘被均匀等分为四个区域，如图所示），转盘可以自由转动．参与者转动转盘，当转盘停止时，指针落在哪一区域，就获得哪种奖品，则获得钢笔的概率为 ． 10．从甲、乙、丙三个厂家生产的同一种产品中各抽取8件产品，对其使用寿命跟踪调查，
家有中考生：考生家长最不容易 各位读友大家好，此文档由网络收集而来，欢迎您下载，谢谢 自从女儿升入初三开始我是一天也没轻松过，每天围着她转，早上送晚上接，每天绞尽脑汁的写食谱，跑菜场，想尽办法能让她多吃点，吃的营养一些，有时她吃一点不吃了，我都恨不得能帮她吃下去。 中考过来人经验分享：调整心态最重要 人大附家长经验分享：如何帮助贪玩儿子圆梦北大四人大附家长经验分享:如何帮助贪玩儿子圆梦北大三人大附家长经验分享:如何帮助贪玩儿子圆梦北大二人大附家长经验分享:如何帮助贪玩儿子圆梦北大一 这开学一个多月了，大考两次，各种小考是无数次，用女儿的话说她们已
经是久经沙场的老手了。每天早上6点30分起床，5分钟洗漱完毕，在车上吃早餐，到学校门口正好吃完，6点50分上课。晚上6点半放学，1个小时的时间要吃完晚餐洗好澡，7点半一定要坐到书桌前学习了。因为全天在学校，我也忙着上班，真是与她聊天的时间都没了，交流的时间越来越少，只有晚上接她的时间在车上与她聊聊在校的情况。 国庆假期别的年级国庆加秋假共9天，她们这个年级只放了五天，六号上课，七号月考，这次月考是四校联考。她是30号晚上也没放松，制定了这五天的学习计划完就开始做作业，国庆当天只是看了个阅兵，晚上让她看晚会她也不要看。二号早上7点35起床吃过早饭8点整坐下来学习，中饭我们去婆家吃饭，女儿吃完就催着回家，要在以前怎么也不会走，要和堂姐玩个够才行，现在好了也就吃个饭就回来了，奶奶让她吃了晚饭再回去，她说“我忙，没时间”搞得我那婆婆大人一时还没明白是怎么
回事。回家睡了一小时午觉，起床就做作业，直至深夜11点钟。三号早上还是8点钟开始作业，中饭后去了绍兴，这是放假前就和朋友们约好的，因女儿和同学中考今年长假我们约定不再出远门旅行了，找个家门口的景点去走走就好了，本来想一天的，女儿和同学都不同意，也就只半天放松一下了，西湖边的满陇桂雨人太多，我们去了另一赏桂佳地绍兴大香林景点，到绍兴也就30多分钟的路程。这个桂花飘香的季节，在桂花树下喝杯茶聊聊天也好，当然三个孩子也是玩得不亦乐乎。四号早上依然8点开始作业、复习，中午一小时午睡，晚上奋斗到11点。五号早上仍旧是作业，下午1点到3点去英语老师家里补课，晚上继续到深夜11点。 假期里，感觉女儿就扎在成堆作业里，跟本就没有假期的轻松自由，所谓的假期也只是画在墙上的”大饼”。她很累，我们这些做家长的也很无奈，我只能是从营养和花样上下功夫，网上的菜
中考模拟试卷3 （满分150分时间100分钟） 一、文言文（40分） （一）默写（15分） 1.停杯投箸不能食，_______________。（李白《行路难（其一）》） 2.__________________，人不寐，将军白发征夫泪。（范仲淹《渔家傲·秋思》） 3.__________________，尘暗旧貂裘。（陆游《诉衷情》） 4.兔从狗窦入，_________________。（《十五从军征》） 5.到亭上，有两人铺毡对坐，________________。（张岱《湖心亭看雪》） 【答案】（15分。每小题3分，错一字扣1分，扣完为止）1.拔剑四顾心茫然2.羌管悠悠霜满地3.关河梦断何处4.雉从梁上飞5.一童子烧酒炉正沸 【分析】考察诗歌的默写，涉及的很多是部编版的新诗歌，因此学生在背诵的时候老师要多关注，一些生字词也要注意不要写错别字。 （二）阅读下面的词，完成第6-7题（4分） 蝶恋花 [宋]柳永 伫倚危楼风细细，望极春愁，黯黯生天际。草色烟光残照里，无言谁会凭阑意。 拟把疏狂图一醉，对酒当歌，强乐还无味。衣带渐宽终不悔，为伊消得人憔悴。 6.词中“烟光”指的是________________________（2分） 7.下列理解有误的一项是（）（2分） A.“春愁”两字，既点出了时令，又是此词情感的核心词。 B.青草、烟光、夕阳这些景物营造出春天清新的诗意氛围。 C.“强乐还无味”写借酒浇愁，更写出“春愁”的缠绵胶着。
D.本词既表达了忠贞的爱情主题，也暗寓执着的人生理想。 【答案】6.（2分）飘忽缭绕的云霭雾气 7.（2分）B 【分析】6.本题考察诗歌的课下注释，要求学生要熟练掌握背诵。难度不大。 7.本题考察诗歌的理解，要求学生熟练理解诗歌的中心主旨，尤其是一些细节方面要多关注，本题中主要是B选项中“清新”两个字有误，诗歌中的意象应该是黯淡萧条的。 （三）阅读下面选文，完成第8-10题。（9分） 鱼，我所欲也；熊掌，亦我所欲也。二者不可得兼，舍鱼而取熊掌者也。生，亦我所欲也；义，亦我所欲也。二者不可得兼，舍生而取义者也。生亦我所欲，所欲有甚于生者，故不为苟得也；死亦我所恶，所恶有甚于死者，故患有所不辟也。如使人之所欲莫甚于生，则凡可以得生者何不用也？使人之所恶莫甚于死者，则凡可以辟患者何不为也？由是则生而有不用也，由是则可以辟患而有不为也。是故所欲有甚于生者，所恶有甚于死者。非独贤者有是心也，人皆有之，贤者能勿丧耳。 8.短文节选自《___________________》，出自儒家经典《________________》。（3分） 9.用现代汉语翻译下面的句子。（3分） 非独贤者有是心也，人皆有之。 ____________________________________________________________________________ 10.短文中可以概括全篇大意的话是______________________________________（3 分） 【答案】8.（3分）鱼我所欲也（1分）孟子（2分） 9.（3分）不只是道德高尚的人有这种天性，人人都有这种天性 10.（3分）生，亦我所欲也；义，亦我所欲也。二者不可得兼，舍生而取义者也 【分析】8.本题考察文言文的基础文学常识。注意“节选”，而不是整篇文章选自哪里，写“鱼我所欲也”即可。 9.本题考察句子翻译，注意关注重点实词，尤其是“独”“是”“皆”等。 10.本题考察内容的梳理概括，但是是从短文中截取，因此只要选对句子即可。 （四）阅读下文，完成第11-14题（12分） 副使失物 李士衡为馆职①，使高丽。一武人为副。高丽礼毕赠遗之物，士衡皆不关意，一切委于副使。时船底疏漏②，副使以士衡所得缣帛③藉船底，然后实④己物以避漏湿。至海中，遇大风，船
马上就要中考了，祝大家中考都考上一个理想的高中！欢迎同学们下载，希望能帮助到你们！ 2020年全国各地中考数学常考试题（含答案）
一、函数与几何综合的压轴题 1.（2018安徽芜湖）如图①，在平面直角坐标系中，AB、CD都垂直于x轴，垂足分别为B、D且AD与B相交于E 点.已知：A(-2,-6),C(1,-3) (1)求证：E点在y轴上； (2)如果有一抛物线经过A，E，C三点，求此抛物线方程. (3)如果AB位置不变，再将DC水平向右移动k(k>0)个单位，此时AD与BC相交于E′点，如图②，求△AE′C的面积S关于k的函数解析式. 图②
[解] （1）（本小题介绍二种方法，供参考） 方法一：过E 作EO ′⊥x 轴，垂足O ′∴AB ∥EO ′∥DC ∴ ,EO DO EO BO AB DB CD DB '''' == 又∵DO ′+BO ′=DB ∴ 1EO EO AB DC '' += ∵AB =6，DC =3，∴EO ′=2 又∵DO EO DB AB ''=，∴2 316 EO DO DB AB ''=?=?= ∴DO ′=DO ，即O ′与O 重合，E 在y 轴上 方法二：由D （1，0），A （-2，-6），得DA 直线方程： y =2x -2① 再由B （-2，0），C （1，-3），得BC 直线方程：y =-x -2 ② 图①
联立①②得0 2x y =??=-? ∴E 点坐标（0，-2），即E 点在y 轴上 （2）设抛物线的方程y =ax 2+bx +c (a ≠0)过A （-2，-6）， C （1，-3） E （0，-2）三点，得方程组426 3 2a b c a b c c -+=-??++=-??=-? 解得a =-1,b =0,c =-2 ∴抛物线方程y =-x 2-2 （3）（本小题给出三种方法，供参考） 由（1）当DC 水平向右平移k 后，过AD 与BC 的交点E ′作E ′F ⊥x 轴垂足为F 。 同（1）可得： 1E F E F AB DC ''+= 得：E ′F =2 方法一：又∵E ′F ∥AB E F DF AB DB '?= ，∴1 3 DF DB = S △AE ′C = S △ADC - S △E ′DC =11122223 DC DB DC DF DC DB ?-?=? =1 3 DC DB ?=DB=3+k S=3+k 为所求函数解析式 方法二：∵ BA ∥DC ，∴S △BCA =S △BDA
欢迎来主页下载---精品文档 统计案例单元测试题 1.对于两个变量之间的相关系数，下列说法中正确的是( ) A.||r 越大，相关程度越大 B.||r ∈()0，＋∞，||r 越大，相关程度越小，||r 越小，相关程度越大 C.||r ≤1且||r 越接近于1，相关程度越大；||r 越接近于0，相关程度越小 D ．以上说法都不对 2．设两个变量x 和y 之间具有线性相关关系，它们的相关系数为r ，y 关于x 的回归直线方程为y ^ ＝kx ＋b ，则( ) A ．b 与r 的符号相同 B ．k 与r 的符号相同 C ．b 与r 的符号相反 D ．k 与r 的符号相反 3．两个变量y 与x 的回归模型中，分别选择了4个不同模型，它们的相关指数R 2如下 ，其中拟合效果最好的模型是( ) A ．模型1的相关指数R 2为0.98 B ．模型2的相关指数R 2为0.80 C ．模型3的相关指数R 2为0.50 D ．模型4的相关指数R 2为0.25 4．通过残差图我们发现在采集样本点过程中，第____个样本点数据不准确( ) A ．第四个 B ．第五个 C ．第六个 D ．第八个 5．独立性检验中的“小概率事件”是指某事件发生的概率 ( ) A ．小于4% B ．小于5% C ．小于6% D ．小于8% 6．关于x 与y ，有如下数据 有如下的两个模型：(1)y ^＝6.5x ＋17.5，(2)y ＝7x ＋17.通过残差分析发现第(1)个线性模型比第(2) 个拟合效果好．则R 2 1________R 22，Q 1______Q 2. (用大于，小于号填空，R ，Q 分别是相关指数和残差平方和) 7．如果发现散点图中所有的样本点都在一条直线上，则残差平方和等于_________．解释变量和预报变量之间的相关系数等于__________． 班级 姓名 座号 得分
家有中考生家长怎么办 距离中考仅剩半个多月，不少初三学生会出现各种各样的考试焦虑情绪，家长能为临考的孩子做些什么呢？“关注两考，关爱考生”阳光行动昨推出考前初三家长报告会。著名专家周红五教授来金为家长支招。 周红五是浙江省学校心理健康教育指导中心负责人、中国学校心理专业委员会副秘书长、国际学校心理学会中国代表。 “从战略上藐视中考，从战术上重视中考”，这是周教授送给家长的第一句话。周教授建议：家长要“倒着为孩子排时间”、“把学习的主动权交给学生，少跟学生谈学习和考试的事情”、“处理好三种关系”、“每天坚持20分钟的锻炼”、“注意营养”、“调整好吃喝拉撒睡，使之与中考时间安排相适应”等。 中考前一个星期家长如何安排呢？周教授认为：家长尽量不要让亲戚朋友来家玩、要保持夫妻关系和睦，每天早出早归等；家长要为孩子准备一个透明的塑料袋，在袋子里装齐中考时要带的文具证件，每天要求孩子上学时带去带回，这样就不会出现考试时忘带准考证的情况，以免造成不必要的麻烦；家长要让孩子按照中考的时间作息，比如，中考第一天是上午9时开考，那么，孩子要8时起床。
周教授说，考试前一天，家长尽量按照中考的时间安排作息时间。家长还要为孩子单独准备一套他们平时最爱穿的衣服、鞋子、裤子、袜子，以防考试当天下雨。为了帮助孩子保持高度的清醒状态，家长要在孩子的透明文件袋里放一块白毛巾、一瓶风油精、几块特浓的巧克力。考试前一天晚上，家长应当找个安静漂亮的地方与孩子去散步，不要谈次日的考试，而应与孩子谈谈开心愉快的事情。孩子睡觉时尽量不要开着窗户，关掉一切通讯工具。 到考试那天，家长又该做什么？如果家住离考场比较近的考生家长最好是陪孩子走到考场，考试结束时，家长一定要记住，千万不要问考得怎么样。 金华晚报·李根荣
中考模拟测试卷 (时间：90分钟满分：100分) Part I 听力部分（15分） 一、模仿朗读(共3分） 听以下短文一遍，给你50秒钟的时间准备，然后模仿朗读。当听到“开始录音”的信号后，立即在50秒钟内朗读短文，当听到要求“停止录音”的信号时，应立即中止朗读。 Good afternoon, parents and teachers. Thank you for attending the meeting. Last weekend, one of our students went to hospital because he played computer games all day without drinking, eating or sleeping. Finally, he became very ill.Some students play computer games for too long. This is bad for their health. I hope we can work together to stop students from spending too much time playing computer games. 下面你有50秒的时间准备。 二、信息获取(7.5分） 第一节听选信息(0.75 X 6=4.5) 听三段对话或独白，每段播放两遍。各段播放前你有10秒钟的阅题时间。各段播放后有两个问题。请根据所听到的问题和括号内的提提示，选择正确的信息在8秒钟内口头回答。 听第一段对话，回答第1-2两个问题。 现在你有10秒钟的阅题时间。 1. Where was the new kind of coat invented? (in America / in Japan / in Italy) 2. How much is the coat? (one hundred dollars / one thousand dollars / one million dollars) 听第二段独白，回答第3-4两个问题。 现在你有10秒钟的阅题时间。 3. When did they get to the park? (at about 8:00 a.m. / at about 8:10 a.m. / at about 8:30 a.m.) 4. How did they feel after the trip? (tired and unhappy / disappointed but happy / tired but happy) 听第三段对话，回答第5-6两个问题。 现在你有10秒钟的阅题时间。 5. Where are they talking? (in a cinema / in a shop / in a school) 6. How much does the man pay? (13 yuan I 26 yuan / 30 yuan) 第二节回答问题(0.75 x 4=3) 听下面一段对话或独白，录音播放两遍。请根据所听内容回答第7-10四个问题。当听到“开始录音”的信号后，请在3秒钟内口头回答。现在你有15秒钟的时间阅读这四个问题。 7. Why are robots designed with different skills? ______________________________________________________ 8. What does Mr. Green need a robot to do? _____________________________________________________ 9. What is Jenny’s hobby? ______________________________________________________
数学：中考前测试卷及答案 仅供参考 （总分150分，时间120分钟）本试卷分试卷I （选择题）和试卷II （非选择题）两部分. 试卷I （选择题，共30分） 一、选择题（每小题3分，共30分） 1，sin45°的值是（ ） A.12 B.22 C.3 D.1 2，如图1所示，两温度计读数分别为我国某地今年2月份某天的最低气温与最高气温, 那么这天的最高气温比最低气温高（ ） A. 5℃ B. 7℃ C. 12℃ D. －12℃ 3，小明设计了一个关于实数运算的程序：输出的数比该数的平方小1，小刚按此程序输入23后，输出的结果应为（ ） A.10 B.11 C.12 D.13 4，国家实行一系列“三农”优惠政策后，农民收入大幅度增加，如图2是我省2001年至2006年农村居民人均年收入统计图，则这6年中农村居民人均年收入的中位数是（ ） A.5132 B.6196 C.5802 D.5664 5，小明把如图3所示的扑克牌放在一张桌子上, 请一位同学避开他任意将其中一张牌倒过来, 然后小明很快辨认了被倒过来的那张扑克牌是（ ） A.方块5 B.梅花6 C.红桃7 D.黑桃8 6，如图4农村常搭建横截面为半圆形的全封闭塑料薄膜蔬菜大棚.如果不考虑塑料薄膜埋在土里的部分，那么搭建一个这样的蔬菜大棚需用塑料薄膜的面积是（ ） A.64πm 2 B.72πm 2 C.78πm 2 D.80πm 2 7，根据下列表格的对应值： x 3.23 3.24 3.25 3.26 ax 2+bx+c －0.06 －0.03 0.09 图1 2001年至2006年浙江省农村居民人均收入统计图 图2 颠倒前 图4
简单的统计单元测试题 考题精练简单的统计单元测试题（时间80分钟满分100分）一、填空题。（共27分，每空1.5分） 1．我们学过的统计图有（）、（）和（）。其中（）不但可以表示数量的多少，而且能够清楚地表示出数量增减的变化情况。 2．医院的护士要统计一病人一昼夜身体的体温情况，应选用（）统计图。 3．下表是某化肥厂1999年生产化肥产量统计表。 季度一二三四产量（万吨） 1.6 2.4 1.5 2.5 （1）平均每季度生产化肥（）万吨。 （2）平均每月生产化肥（）万吨。 （3）第二季度比第一季度增产（）％。 4．在一张玉米产量条形统计图上，测得1997年收玉米6.5万千克，图上直条高2.6厘米；1998年收玉米8万千克，图上的直条的高是（）厘米。 5．五（1）班有50人参加数学期末考试，其中5人得100分，得100分的人数占全班人数的（）％；如果制成扇形统计图时，表示这部分人数的扇形圆心角是（）。
6．完成下面统计表，并回答问题。 光明水泥厂某年第一季度生产情况统计表产项目量（吨）月份计划产量实际产量实际完成计划的百分数一 5000 5500 二 5010 110％三 5130 95％合计 15600 （1）第一季度实际生产（）吨。 （2）（）个月超额完成任务。 二、看图填空。（每空4分，共20分）下图是2000年光明乡各村农副业产值统计图。 1．这是（）统计图。 2．李村的农副业总产值是（）万元。 3．三个村农业总产值是（）万元，副业总产值是（）万元。4．李村的农业产值比张村少（）％。 5．赵村的副业产值比张村多（）％。 三、制作图表。（每小题10分，共20分）某商店上半年销售情况统计如下表：月份一二三四五六金额（万元） 120 210 180 96 155 190 1．根据上面的数据制成折线统计图。 某商店上半年销售情况统计图（2000年1～6月） 2．将上表的统计图改制成条形统计图。 某商店上半年销售情况统计图（2000年1～6月）四、根据下面统计图回答问题。（共15分，每小题3分） 1．哪个月的收入和支出相差额
给中考学生家长的建议 治河中学周东辉 家就好比是一艘船，船长和水手都是家长，孩子的扮演的是乘客的角色。家长如何才能够在中考前夕当好船长，服务好乘客，真正的做到协助孩子复习冲刺，这需要家长拿出自己的智慧。中考就好似一场战斗，孩子是唯一的战士，在孩子冲锋陷阵前家长必须做好参谋，把握好方向才能利于不败之地。这里，给出八大建议以供参考。希望每一个“战士”都能凯旋。 一、密切关注形式把握动向趋势 在初三这一年，孩子平时忙于各科学习，家长们要多看报纸和电视，多关注、了解最新的中考形势，并向有关学校和相关部门咨询中考政策信息。每年都有一些家长，因为对学校了解不够，导致孩子上学后，又觉得学校不适合，只得转学。在每年四五月份的时候，许多学校都会举办招生咨询会，家长要留意参加，会上可以搜集一些学校相关资料，实地了解高中学校的情况，并分析是否适合自己的孩子报考。 第一学期期末考试后，各个区县一般会对初三生的成绩进行全区排名，分析出上示范高中、一般高中的大概分数。家长要及时关注这次排名信息，准确了解孩子学习情况，以便选择志愿时正确定位。 此外，孩子学习时间紧张，没有太多时间看课外读物，家长平时读书看报时，还可帮孩子搜集作文素材。 二、制定合理计划结合实际对症下药 每个学生的学习基础不同，学习能力也有差异，学生间产生差距是难免的。初三家长不要过度关注考试分数，而要多花精力帮孩子分析还有哪些提升空间。家长要冷静面对孩子的每次考试，无论成绩高低都要有一个准确的定位，并对下一步的升学目标有个清醒的认识。 初三家长要和孩子一起制订学习目标和计划，既要有总体计划，又要有各个阶段的小计划。计划要切合孩子的实际情况，不能过高，也不能过低，而且要根据具体情况进行适时调整。
物理中考模拟测试卷测试卷附答案含答案 一、中考物理力学问题 易错压轴题提优（难） 1．如图所示，在滑轮组的下方，悬挂一圆柱形的物体，此物体被浸在圆柱形容器内的液体中，在B 端用一轻绳沿竖直方向将杠杆拉住，使其始终保持水平平衡。已知杠杆O 点两侧的长度关系如图所示，圆柱形物体重4.4N ，底面积为10cm 2、高为12cm ，圆柱形容器的底面积为50cm 2；若容器中的液体为水，在水深为20cm 时物体的上表面恰与水面相平，此时杠杆B 端绳上的拉力为F 1；打开圆柱形容器下方的阀门K ，将水向外释放，直到物体露出水面的体积为其总体积的 2 3 时，将阀门K 关闭，此时杠杆B 端绳上的拉力为F 2，且F 1：F 2=9：11；若容器中液体为某种未知液体，其质量与最初容器中的水的质量相等，此时未知液体的深度为18cm ，杠杆B 端绳上的拉力为F 3，（杠杆的重力及滑轮的摩擦均可忽略不计，取g =10N/kg ）则： (1)圆柱形物体浸没水中时受到的浮力为________N ； (2)未知液体的密度为________g/cm 3； (3)作用在B 端的拉力F 3大小为________N 。（小数点后保留两位） 【答案】1.2 1.1 2.47 【解析】 【分析】 【详解】 (1)[1]物体的体积为 42431010m 0.12m 1.210m V S h --==??=?物物 由阿基米德原理可知，圆柱形物体浸没水中时受到的浮力为 334310N/kg 1.010kg/m 1.210m 1.2N F gV ρ-==????=浮水 (2)[2]水的体积为 4242435010m 0.2m 1010m 0.12m 8.810m V S h S h ---=-=??-??=?水水物物容 未知液体的深度为18cm ，则未知液体的体积为 424243()5010m 0.18m 1010m 0.1m 810m V S h S h h h ---=--+=??-??=?液液物物水液容 由于水的质量与液体的质量相等，则 V V ρρ=水水液液 则可解得液体的密度为
信息技术中考复习题
一、基础知识 一、选择题 １、关于信息的说法，以下叙述中正确的是(）。 A、收音机就是一种信息 B、一本书就是信息 C、一张报纸就是信息 D、报上登载的足球赛的消息是信息答案［ D ] 2、现在使用的电脑,一般都属于第（）代计算机。 Ａ、二Ｂ、三C、四 D、五答案[ C ] 3、1ＫB＝()B。 A、２5６ B、128Ｃ、1０２4 Ｄ、２048 答案[ C ] 4、计算机存储容量的基本单位是(）。 A、升Ｂ、字节Ｃ、公斤 D、加仑答案[ B ］ ５、存储1个汉字至少要占用(）个字节。 A、１Ｂ、2 C、8 D、16 答案[ B ] ６、目前常用的3．５英寸软盘，它的容量一般为()。 A、1.4４GB B、1.４4Ｂ C、1.4４MB D、１．４4TB 答案[ C ］ 7、软磁盘被写保护后，则磁盘（）。 A、只能读不能写 B、只能写不能读 C、既能读又能写Ｄ、既不能读又不能写答案[ A ] 8、计算机能处理文字、声音、图像等多种信息的技术,属于()技术。 A、动画 B、通讯 C、多媒体 D、网络答案[ Ｃ] 9、第一代计算机使用的主要元器件为（）。 A、电子管Ｂ、晶体管 C、中小规模集成电路Ｄ、大规模超大规模集成电路答案[ A ] １0、计算机系统由（）两大部分组成。 A、操作系统、应用软件 B、主机、外设 C、CＰU、外设 D、硬件系统、软件系统答案[ Ｄ ] 11、计算机的硬件系统是由输入设备和输出设备以及()组成。 A、ＣPU、控制器、存储器 B、运算器、控制器、存储器 Ｃ、运算器、存储器Ｄ、CPU、运算器、存储器答案［ B ］ 12、下列哪组设备按顺序分别属于输入设备、输出设备和存储器。 A、打印机、CPU、扫描仪 B、磁盘、鼠标、键盘 C、鼠标、打印机、硬盘 D、磁带、打印机、显示器答案［Ｃ ] 13、下列设备不属于输入设备的是。 A、鼠标 B、扫描仪 C、键盘Ｄ、打印机答
统计案例单元测试题 Last revised by LE LE in 2021
统计案例单元测试题 1.对于两个变量之间的相关系数，下列说法中正确的是( ) 越大，相关程度越大 ∈()0，＋∞，||r 越大，相关程度越小，||r 越小，相关程度越大 ≤1且||r 越接近于1，相关程度越大；||r 越接近于0，相关程度越小 D ．以上说法都不对 2．设两个变量x 和y 之间具有线性相关关系，它们的相关系数为r ，y 关于x 的回归直线方程为y ^ ＝kx ＋b ，则( ) A ．b 与r 的符号相同 B ．k 与r 的符号相同 C ．b 与r 的符号相反 D ．k 与r 的符号相反 3．两个变量y 与x 的回归模型中，分别选择了4个不同模型，它们的相关指数R 2如下 ，其中拟合效果最好的模型是( ) A ．模型1的相关指数R 2 为 B ．模型2的相关指数R 2 为 C ．模型3的相关指数R 2为 D ．模型4的相关指数R 2 为 4．通过残差图我们发现在采集样本点过程中，第____个样本点数据不准确( ) A ．第四个 B ．第五个 C ．第六个 D ．第八个 5．独立性检验中的“小概率事件”是指某事件发生的概率 ( ) A ．小于4% B ．小于5% C ．小于6% D ．小于8% 6．关于x 与y ，有如下数据 有如下的两个模型：(1)y ＝＋，(2)y ＝7x ＋17.通过残差分析发现第(1)个线性模型比第(2) 个拟合效果好．则R 21________R 2 2，Q 1______Q 2. (用大于，小于号填空，R ，Q 分别是相关指数和残差平方和) 7．如果发现散点图中所有的样本点都在一条直线上，则残差平方和等于_________．解释变量和预报变量之间的相关系数等于__________． 8．以下是某地区不同身高的未成年男性的体重平均值表 班级 姓名 座号 得分
中考前致家长的一封信 尊敬的家长： 您好！ 三年耕耘，一朝收获，您的孩子、我们的学生就要迈入中考考场，接受人生的一次重大考验。在此，首先感谢家长对学校工作的信任、支持和帮助。 我们本着“老师多出一点加力，学生少走一点弯路”的宗旨，全面提高了教学的质量。临考的最后这段时间，为了让考生尽快进入理想的应试状态，龙文教育迫切希望家长能配合做好以下工作： 一、科学安排作息时间 考前的这段时间是把“双刃剑”，利用好了能放松心情，调整状态；利用不好也会打乱生活规律和节奏，影响考试发挥。考生切忌浮躁心理，在家里要能坐住，可以适量地演练习题，复习一些记忆性的知识，切忌上网和过度看电视，也不要从事剧烈的体育运动。 二、帮助考生调整好心态 考生应该有一颗平常心，对自己的实力客观分析，充满信心。家长更要以平常心对待孩子的这次考试。细致的观察孩子的心理变化，出现情绪上的波动要及时沟通疏导。考生和家长要知道，临考前和考试中的适度紧张是正常的心理状态，不要对此过于担忧。 三、科学合理安排饮食 1.考生考前饮食不要因中考临近而刻意改变，在临考前的一段时间及考试期间，饮食量都不要比平时增加太多，尤其考试期间饮食不要做太大的变动，应和平时保持一致，注意营养均衡，切不可偏食。考生切忌吃大量油腻的动物性食品，猪肉也不要吃太多。 2.保健专家强调：“不吃主食（米、面类）人不仅会有饥饿感，而且还会影响到大脑的思维能力。” 3.充足的水分可确保血液循环顺畅，这样大脑工作所需的氧才能得到及时供应。一些含糖的饮料在吃饭前最好不要吃，因其易产生饱腹感，不利进餐时的食量，多喝白开水。特别提醒考生在考试期间一定不要喝咖啡，因为咖啡因的作用会使人产生尿频，影响考生的发挥。
新人教版四年级上册数学第七单元检测试卷 学校班级姓名得分 一、填空 1．填出下列条形统计图中一格表示多少，直条表示多少。 1格表示：1格表示： 1格表示：1格表示： 直条表示：直条表示：直条表示：直条表示： 2．根据统计图填空。 统计图中，1格表示（）票，得票最多的城市是（），与得票最少的城市相差（）票，共有（）名代表投票。 3．根据统计结果填空。
这张统计图中每一格表示（）辆汽车，产量最少是（）月份，是（）辆；产量最多是（）月份，是（）辆；最多与最少的月份产量相差（）辆汽车，下半年一共生产了（）汽车。 4．根据育兴小学各兴趣小组人数填一填。 育兴小学校各兴趣小组人数情况统计图 每格代表（）比较合适，（）名同学参加兴趣小组 5.这张统计图中每一格表示（）辆汽车，产量最少是（）月份，是（）辆；产量最多是（）月份，是（）辆；最多与最少的月份产量相差（）辆汽车，下半年一共生产了（）汽车。
6．根据育兴小学各兴趣小组人数填一填。 育兴小学校各兴趣小组人数情况统计图 每格代表（）比较合适，（）名同学参加兴趣小组。 7．根据统计图回答下面问题。 四年级同学参加兴趣小组情况统计图 一共调查了（）名同学，参加（）小组的人数最多，( )小组的人数最少，相差（）人，参加（）小组的是（）小组人数的2倍。 二、选择
1．杨树再种( )棵就和柳树同样多。 ①4 ②6 ③8 2．芳芳家下半年各月用水量最多相差（）千克。 ①5 ②5000 ③50 3．你认为鸿丰商场再进货应多进（）种矿泉水。 ①A ②B ③C ④D ①（）条河流是我国的第一大河，它大约长（）千米。 ①江、6000 ②黄河、6000 ③黑龙江、6000 ④珠江、6000 5．根据统计结果，你认为a的数值大约是（）比较合理。 ①10 ②12 ③16 ④24
中考前家长应该做什么？ 面对中考，家长的压力普遍比考生大：考生年龄尚小，有些对中考的重要性认识不够、重视不够，浑浑噩噩，用家长的话来说就是“不醒事“；有些学生第一次面临这样的大考，不知所措，难以应对。而家长深知中考对孩子的重要性，普遍对孩子的期望较高，无形中会把压力传递给孩子，有的则干脆直接对孩子施压，如对孩子提出不切实际的要求，看到孩子不认真对待中考时更是备感焦虑，进而把情绪发泄在孩子身上……家长的这种做法，容易造成矛盾激化，对孩子的考前心理有很大的负面影响。 如何创造良好的环境，让孩子在温馨、宽松的氛围中发挥出最佳水平呢？以下几点值得家长们注意： 步骤/方法 1.切忌期望过高。不少家长对孩子抱有不切实际的期望，爱把“至少要考多 少分”、“一定要上什么学校”之类的话挂在嘴边，殊不知这样做不仅起不到激励作用，反而让孩子愈发悲观、焦虑，给孩子造成不必要的心理压力。其实，到了这个时候，孩子的知识水平和能力基本上已成定局，短时间内不可能有“质的飞跃“，因此，对家长来说，首要任务就是正确了解孩子的状况，接纳孩子的现状，不提不切实际的要求，你不妨告诉孩子：“只要尽到最大努力就行了！”
2..切忌制造紧张空气。为了给孩子督战助阵，有些家长刻意制造出“一级 战备“的考前状态，如请假在家做“专职后勤“，晚上绝不打开电视等等。 其实，这样做反而会让孩子觉得压抑、烦闷，“透不过气“来。明智的做法是，家长该干嘛就干嘛，同时，尽量避免出现对孩子的心理产生消极影响的事件，如夫妻吵架、邻居冲突等等，营造温馨、宽松的家庭氛围。3.切忌打击孩子的自信心。自信心能让考生把现有水平发挥到最佳程度，在 考前阶段，家长对孩子要鼓励、肯定，不要动辄批评、指责。当孩子某一次考前测验失利时，一味责骂只会让孩子更加缺乏自信，甚至自暴自弃，这时，家长最好多与老师、孩子沟通，共同找出失利的原因，帮助孩子尽快走出失利的阴影。 4.切忌唠叨。在孩子复习迎考期间，一些家长总爱在孩子面前反复念叨“你 要加把劲啊！“、“你一定要考好呀！“等等，这容易让孩子产生逆反心理，加重思想包袱。你有这唠叨的功夫，不如给孩子讲讲笑话，让他的神经放松一下。
中考模拟卷 一、单项选择（共15小题；每小题1分，满分15分） 1. ▲warm idea Suddenly came to me that I might use ▲ pocket money to buy a gift for my father on Father's Day. A. A; the B. The; the C. The; / D. /; the 2. Jia Pingwa’s novels are popular among adults and always get good ▲ . A．tips B. habits C. readers D. reviews 3. --- Mr. Li, I can't understand everything in class. --- Don't worry! I'll ▲ the main points for you. A. record B. receive C. require D. remember 4. --- Since you have only two tickets, ▲I ▲my sister will go with you. ---Ok, then I’ll try to get enough tickets for us all next time. A. either; or B. both; and C. neither; nor D. not only; but also 5. Don't worry! I'm sure you'll ▲your classmates if you are kind and friendly to them. A. catch up with B. agree with C. have a word with D. get along well with 6. --- Why didn't you enjoy the film? --- It was ▲film that I had ever seen. A. the most interesting B. the least interesting C. more interesting D. less interesting 7. --- Be careful when you are driving, ▲in a rainstorm like this. --- Thanks. I will. A. seriously B. exactly C. especially D. probably 8. --- Would you like ▲the Wutong Mountain tomorrow? --- If my mother ▲, I will go with you. A. climbing; will allow B. climbing; allows C. to climb; allows D. to climb; will allow 9. --- Excuse me, I want to have my watch fixed, but I can't find a repair shop. --- I know ▲nearby. Come on, I'll show you. A. one B. it C. some D. that 10. --- Do you agree with her idea? --- No, I’m ▲riding an electric bike to school. That’s too dangerous. A. for B. on C. against D. off 11. ▲more, and you will improve your spoken English. A. To speak B. Speak C. Speaks D. Speaking
0.10.3 5.25.15.04.94.84.74.64.54.4视力4.3频率组距o y x 《统计》单元测试题 一选择题： 1．某校为了了解学生的课外阅读情况，随机调查了50名学生，得到他们在 某 一天各自课外 阅读所用时间的数据，结果用右侧的条形图表示． 根据条形图可得这50名学生这一天平均每 人的课外阅读时间为( ) A ．0．6小时 B ．0．9小时 C ．1．0小时 D ．1．5小时 2.某单位有老年人28 人，中年人54人，青年人81人，为了调查他们的身体 状况的某项指标， 需从他们中间抽取一个容量为36样本，则老年人、中年人、青年人分别各抽取的人数是( ) A.6，12，18 B.7，11，19 C ．6，13，17 D.7，12，17 3．将参加夏令营的600名学生编号为：001，002，……600，采用系统抽样方法抽取一个容量为50的样本，且随机抽得的号码为003．这600名学生分住在三个营区，从001到300在第Ⅰ营区，从301到495住在第Ⅱ营区，从496到600在第Ⅲ营区，三个营区被抽中的人数一次为( )A ．26, 16, 8, B ．25，17，8 C ．25，16，9 D ．24，17，9 4．样本中共有五个个体，其值分别为a ，0,1,2,3。若该样本的平均值为1，则样本方差为( ) A ．56 B.5 6 C.2 D.2 5．某初级中学有学生270人，其中一年级108人，二、三年级各81人，现要利用抽样方法抽取10人参加某项调查，考虑选用简单随机抽样、分层抽样和系统抽样三种方案，使用简单随机抽样和分层抽样时，将学生按一、二、三年级依次统一编号为1，2，…，270；使用系统抽样时，将学生统一随机编号1，2，…，270，并将整个编号依次分为10段.如果抽得号码有下列四种情况： ①7,34,61,88,115,142,169,196,223,250； ②5,9,100,107,111,121,180,195,200,265； ③11,38,65,92,119,146,173,200,227,254； ④30,57,84,111,138,165,192,219,246,270； 关于上述样本的下列结论中，正确的是( ) A ．②、③都不能为系统抽样 B ．②、④都不能为分层抽样 C ．①、④都可能为系统抽样 D ．①、③都可能为分层抽样 6．对变量x, y 有观测数据理力争（1x ，1y ）（i=1,2,…，10），得 散点图1；对变量u ，v 有观测数据（1u ，1v ）（i=1,2,…，10）, 得散点图2. 由这两个散点图可以判断。( ) A.变量x 与y 正相关，u 与v 正相关 B.变量x 与y 正相关，u 与v 负相关 C.变量x 与y 负相关，u 与v 正相关 D.变量x 与y 负相关，u 与v 负相关 7．某工厂对一批产品进行了抽样检测.右图是根据抽样检测后的产品净重（单位：克）数据绘制的 频率分布直方图，其中产品净重的范围是[96，106]，样本数据分组为[96，98），[98，100),[100， 102)，[102， 104),[104，106],已知 样本中产品净重小于100克的个数是36，则样本中净重大 于或等于98克并且小于104克的产品的个数是 ( )A.90 B.75 C.60 D.45 8.为了考察两个变量x 和y 之间的线性相关性，甲、乙两个同学各自独立的做10次和15V 次试验， 并且利用线性回归方法，求得回归直线分布为1l 和2l ，已知在两人的试验中发现对变量x 的观察数据的平均值恰好相等都为s ，对变量y 的观察数据的平均值恰好相等都为t,那么下列说法正确的是( ) A ．直线1l 和2l 有交点（s,t ） B ．直线1l 和2l 相交，但是交点未必是（s,t ） C ． 直线1l 和2l 平行 D ． 直线1l 和2l 必定重合 二、填空题： 9将容量为n 的样本中的数据分成6组. 绘制频率分步直方图.若第一组至第六组数据的频率之比为2：3：4：6：4：1，且前三组数据的频率之和等于27，则n 等于 . 10．一个容量为n 的样本，分成若干组，已知某组的频数和频率分别为60，0.25，则n 的值是 ． 11.某单位200名职工的年龄分布情况如图，现要从中抽取40名职工作样本， 用系统抽样法， 将全体职工随机按1－200编号，并按编号顺序平均分为40组（1－5号，6－10号…，196 －200号）.若第5组抽出的号码为22，则第8组抽出的号码应是 。若用分层抽样方法， 则40岁以下年龄段应抽取 人. 12．为了解某校高三学生的视力情况，随机地抽查了该校100名高三学生的视力情况，得到频率分布直方图，如右，由于不慎将部分数据丢失，但知道前4组的频数成等比数列，后6 组的频数成等差数列，设最大频率为a ，视力在4.6到5.0之间的学生数为b ，则a, b 的值分别为 . 三、解答题： 13．写出下列各题的抽样过程 (1)请从拥有500个分数的总体中用简单随机抽样方法抽取一个容量为30的样本. (2)某车间有189名职工，现在要按1：21的比例选派质量检查员，采用系统抽样的方式进行. (3)一个电视台在因特网上就观众对某一节目喜爱的测得进行得出，车间得出的总人数为12000人，其中持各种态度的人数如下：打算从中抽取60人进行详细调查，如何抽取？ 很喜爱 喜爱 一般 不喜爱 2435 4567 3926 1072