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合理分配时间,检查很有必要。不要急于迅速做完,踏踏实实做完每一个题后认真检查。先检查有理数混合运算、整式化简求值、解方程三类型题。再检查填空题,最后是选择题。解方程的检查可以将解带入原方程进行检验,如果等号两边不相等要立即查找每一步骤,找出错误改正。4、不纠结于不会的题,但不放弃“难题”,当遇到自己不会做的题时,如果看题3遍都毫无思路,应该马上跳至下一题。所谓的“难题”难在条件多,题意长,多读几遍题,弄清所有的已知条件,充分利用,就能得到应得的分数。二、技巧准备1、选择题有些选择题可以代入答案验证;如方程类型,代入验证比直接求解要简单有些题目用赋值法(用某数字如1、2、0、-1、-2等代替字母),但是让字母的值一定要符合题意。2、填空题书写要清晰,切忌乱改乱涂;要求只填一个答案即可的一定不要多填,多填是毛病;注意有多解的情况;填代数式的结果应化为最简结果,即去括号合并同类型。是多项式要添加括号。3、解答题(1)计算题(计算考的是细心,不会太难的,一步步来,不要急着快点写完)易错点:运算顺序;运算符号;别抄错数字和符号!往往第二、第三步的运算顺序出错!(2)化简后求值题化简时原代数式可以用”原式”代替,也可以抄一遍,但要抄准确。每一步变形用“=”连接。化简完后,按步骤书写:当a=……时,原式=……=……。当字母的值没有直接给出时,要写出一些步骤求字母的值。化简正确是关键,易错点:去括号时漏乘,应乘遍每一项;括号内部分项忘了变号,要变号都变号;合并同类项时漏项,少抄了一项尤其常数项。字母颠倒的同类项,注意合并彻底。⑶解方程组、不等式、不等式组解方程组时:每一步只作一种变形,一步步来,不要跨度太大而出错,解完可以带入原方程检验对不对;解不等式、不等式组:严格按步骤去做,注意解集的确定,要利用数轴正确定解集;易错点:①去分母时漏乘不含分母项(整数项也要乘以最小公倍数);②去括号时漏乘(没乘遍每一项)、部分项忘记变号(要变号都变号);③移项忘记变号;④将未知数系数化为1时分子分母位置颠倒(x的系数作分母);⑷方程不等式的应用题按列方程一般步骤:审、设、列、解、验、答进行;按步骤得分,不可缺项。(一定要多看几遍题目!划出条件词语,把题目意思搞懂后在动笔。列方程和不等式时,记得把题目已知条件列在草稿纸上,还有中文等式)方程思想是最常用的一种数学思想,不管在小题还是大题中,列方程求解很实用。成功历来都垂青于有准备的人!数学没有你想的那么难!你认为难是因为你的计算老是出错,你的理解没有到位,你的知识应用还没有熟练……补救的办法就是:①细心计算;②多读几遍题,把意思弄懂;③做完后反复检查。相信聪明的你一定取得令大家满意的成绩,开开心心过暑假!14.(1分)选出以下单词中划线部分发音与其他两项不同的一项.( )A.br______dB.sw______terC.______sy15.(1分)﹣﹣Could you helpwithEnglish?﹣﹣No problem.( )A.me;myB.my;mineC.I;me16.(1分)﹣﹣is that T﹣shirt?﹣﹣twenty﹣five dollars.( )A.How much;They'reB.How much;It'sC.What color;It's17.(1分)﹣﹣Does your son like carrots?﹣﹣.( )A.Yes,she doesB.Yes,he isC.No,he doesn't18.(1分)﹣﹣I like playing computer games.﹣﹣Me,too.It's.( )A.boringB.interestingC.difficult19.(1分)﹣﹣Look,therea pair of shoes under the sofa.﹣﹣Oh,yes.The shoesmine.( )A.is;areB.are;isC.are;are20.(1分)﹣﹣Let's play computer games.﹣﹣Thatgreat.( )A.soundsB.thinksC.finds21.(1分)﹣﹣Happy birthday to you!﹣﹣.( )A.The same to youB.Thank youC.I'm fine22.(1分)I needhour to playbasketball every day.( )以自信轻松的心情参加考试,当成是完成一项任务,加油!!A.an;theB.a;/C.an;/23.(1分)﹣﹣?﹣﹣I want two bottles of milk for my son.( )A.What do you buy?B.What do you do?C.What can I do for you?第二节:完形填空(共1小题;每小题10分,满分10分)阅读下面这篇短文,掌握大意,从各题所给的三个选项(A、B、C)中,选出可以填入相应空白处的最佳答案.24.(10分)Hi!I'm Cheng Ling.I'm a(31)of Class 3,Grade 7.My school life is very(32).We have four classes in the(33).Classes begin at 8o'clock.In the afternoon,we have two classes.We have English,science,history,music,and(34)other subjects.(35)is my favorite subject.I often sing and dance with my classmates on weekends.But I(36)science,because I think it's difficult and(37).Do you think so?After school,I often play soccer with(38)friends.Sometimes I swim in a swimming club.But my favorite sport is volleyball.And I can play it(39).I like my school life very much.(40)you tell me about your school life?第三部分:阅读理解(共两节,满分20分)第一节:阅读理解,选出正确答案(共3篇,10小题;每小题6分,满分20分)25.(6分)41.I play volleyball at 9:00every morning.Where can you find me?A.Green Trees Gym.B.Red Apples Gym.C.Both Green Trees Gym and Red Apples Gym.42.I want to play basketball on Monday morning.What can I do?A.You can call Red Apples Gym at 6589417.B.You can call Green Trees Gym at 6227225.C.You can call Red Apples Gym at 6589517.43.Which gym accepts(接受)mails from computer?A.Green Apples Gym.B.Red Apples Gym.C.Green Trees Gym.26.(6分)Rick is a good man.He makes birthday cakes in a store.His cakes are great and have very good prices,so many people buy his cakes.He makes friends with lots of his customers(顾客).They all like him very much.One evening,he wants to go home,but many of his old customers come in.Rick smiles(笑)to them,"I am sorry.It is late today.If(如果)you need cakes,please come tomorrow."One of them takes out a nice cake and says to him,"You make so many great cakes for us.This birthday cake is for you.Happy birthday,Rick."44.Where does Rick work?A.In a store.B.In the classroom.C.At school45.His customers give(给)him.A.many cakesB.a birthday cakeC.some vegetables46.One evening,many customers come to Rick's store because.A.they want to buy cakesB.they come for a partyC.that day is Rick's birthday.27.(8分)There are twelve months in a year.My favorite month is October.October 1st is National Day.We have a seven﹣day holiday(假期).During the holiday,my parents often take me to see my grandparents.There are also(也)some interesting school activities in October.On the 12th,we have a soccer game.I don't love basketball because it's difficult for me.But I love soccer.I love playing soccer and watching soccer games.We have a book sale on October 20th.I have three old books and I want to sell them.The art festival is fun.We have______on October 29th.My birthday is also on this day.October is a really great month for me.47.The writer thinks basketball is.A.difficultB.interestingC.relaxing48.The underlined word"it"refers to(指的是)the.A.soccer gameB.book saleC.art festival49.How many school activities are there in October?A.Two.B.Three.C.Four.50.The writer loves October NOT because.A.he can have a seven﹣day holidayB.his birthday is in OctoberC.there are thirty﹣one days in October.第二节:还原句子(5选5,每小题5分,满分5分)根据短文内容,从短文的选项中选出能填入空白处的最佳选项.28.(5分)Li Ming's uncle is a teacher in No.4Middle School.He has a good friend inthe school.(51).His birthday is on May 1st.He is a teacher in the school,too.He is very funny.All of the teachers and students in the school like him very much.(52).Mr.Fun is in China with his family now.(53),so he teaches students English.Mr.Fun likes playing ping﹣pong.(54).Mr.Fun likes music,(55).第四部分:综合知识运用(共四节,满分10分)第一节:短文填空(共10小空;每空1分;满分10分)将下列单词或词组的适当形式填入空格.每空限填一词,每词只能填一次.29.(10分)It's December 20th.Class 2is having a(56).They sell some things at school.Dave sells apples,oranges and pears.Many people(57)his fruit.He makes(赚得)ten dollars a day.Lucy sells(58).She has T﹣shirts on sale.How much are(59)T﹣shirts,do you know?Oh,her T﹣shirts are(60)a good price.Each of them(61)five dollars.Jane sells(62)things.She has pens and(63)on sale.They're very nice.Her pens are(64)one dollar each.Her notebooks are two dollars each.Jane makes(65)dollars in the morning and five dollars in the afternoon.She makes twelve dollars a day.

合理分配时间,检查很有必要。不要急于迅速做完,踏踏实实做完每一个题后认真检查。先检查有理数混合运算、整式化简求值、解方程三类型题。再检查填空题,最后是选择题。解方程的检查可以将解带入原方程进行检验,如果等号两边不相等要立即查找每一步骤,找出错误改正。4、不纠结于不会的题,但不放弃“难题”,当遇到自己不会做的题时,如果看题3遍都毫无思路,应该马上跳至下一题。所谓的“难题”难在条件多,题意长,多读几遍题,弄清所有的已知条件,充分利用,就能得到应得的分数。二、技巧准备1、选择题有些选择题可以代入答案验证;如方程类型,代入验证比直接求解要简单有些题目用赋值法(用某数字如1、2、0、-1、-2等代替字母),但是让字母的值一定要符合题意。

2、填空题书写要清晰,切忌乱改乱涂;要求只填一个答案即可的一定不要多填,多填是毛病;注意有多解的情况;填代数式的结果应化为最简结果,即去括号合并同类型。是多项式要添加括号。3、解答题(1)计算题(计算考的是细心,不会太难的,一步步来,不要急着快点写完)

易错点:运算顺序;运算符号;别抄错数字和符号!往往第二、第三步的运算顺序出错!

(2)化简后求值题

化简时原代数式可以用”原式”代替,也可以抄一遍,但要抄准确。每一步变形用“=”连接。化简完后,按步骤书写:当a=……时,原式=……=……。当字母的值没有直接给出时,要写出一些步骤求字母的值。化简正确是关键,易错点:去括号时漏乘,应乘遍每一项;括号内部分项忘了变号,要变号都变号;合并同类项时漏项,少抄了一项尤其常数项。字母颠倒的同类项,注意合并彻底。⑶解方程组、不等式、不等式组

解方程组时:每一步只作一种变形,一步步来,不要跨度太大而出错,解完可以带入原方程检验对不对;解不等式、不等式组:严格按步骤去做,注意解集的确定,要利用数轴正确定解集;易错点:①去分母时漏乘不含分母项(整数项也要乘以最小公倍数);②去括号时漏乘(没乘遍每一项)、部分项忘记变号(要变号都变号);③移项忘记变号;④将未知数系数化为1时分子分母位置颠倒(x的系数作分母);⑷方程不等式的应用题

按列方程一般步骤:审、设、列、解、验、答进行;按步骤得分,不可缺项。(一定要多看几遍题目!划出条件词语,把题目意思搞懂后在动笔。列方程和不等式时,记得把题目已知条件列在草稿纸上,还有中文等式)方程思想是最常用的一种数学思想,不管在小题还是大题中,列方程求解很实用。成功历来都垂青于有准备的人!数学没有你想的那么难!你认为难是因为你的计算老是出错,你的理解没有到位,你的知识应用还没有熟练……补救的办法就是:①细心计算;②多读几遍题,把意思弄懂;③做完后反复检查。相信聪明的你一定取得令大家满意的成绩,开开心心过暑假!

14.(1分)选出以下单词中划线部分发音与其他两项不同的一项.( )

A.br______dB.sw______terC.______sy

15.(1分)﹣﹣Could you helpwithEnglish?

﹣﹣No problem.( )

A.me;myB.my;mineC.I;me

16.(1分)﹣﹣is that T﹣shirt?

﹣﹣twenty﹣five dollars.( )

A.How much;They'reB.How much;It's

C.What color;It's

17.(1分)﹣﹣Does your son like carrots?

﹣﹣.( )

A.Yes,she doesB.Yes,he is

C.No,he doesn't

18.(1分)﹣﹣I like playing computer games.

﹣﹣Me,too.It's.( )

A.boringB.interestingC.difficult

19.(1分)﹣﹣Look,therea pair of shoes under the sofa.

﹣﹣Oh,yes.The shoesmine.( )

A.is;areB.are;isC.are;are

20.(1分)﹣﹣Let's play computer games.

﹣﹣Thatgreat.( )

A.soundsB.thinksC.finds

21.(1分)﹣﹣Happy birthday to you!

﹣﹣.( )

A.The same to youB.Thank you

C.I'm fine

22.(1分)I needhour to playbasketball every day.( )

以自信轻松的心情参加考试,当成是完成一项任务,加油!!

A.an;theB.a;/C.an;/

23.(1分)﹣﹣?

﹣﹣I want two bottles of milk for my son.( )

A.What do you buy?B.What do you do?

C.What can I do for you?

第二节:完形填空(共1小题;每小题10分,满分10分)阅读下面这篇短文,掌握大意,从各题所给的三个选项(A、B、C)中,选出可以填入相应空白处的最佳答案.

24.(10分)Hi!I'm Cheng Ling.I'm a(31)of Class 3,Grade 7.My school life is very(32).We have four classes in the(33).Classes begin at 8o'clock.In the afternoon,we have two classes.We have English,science,history,music,and(34)other subjects.(35)is my favorite subject.I often sing and dance with my classmates on weekends.But I(36)science,because I think it's difficult and(37).Do you think so?

After school,I often play soccer with(38)friends.Sometimes I swim in a swimming club.But my favorite sport is volleyball.And I can play it(39).

I like my school life very much.(40)you tell me about your school life?

第三部分:阅读理解(共两节,满分20分)第一节:阅读理解,选出正确答案(共3篇,10小题;每小题6分,满分20分)

25.(6分)

41.I play volleyball at 9:00every morning.Where can you find me?

A.Green Trees Gym.

B.Red Apples Gym.

C.Both Green Trees Gym and Red Apples Gym.

42.I want to play basketball on Monday morning.What can I do?

A.You can call Red Apples Gym at 6589417.

B.You can call Green Trees Gym at 6227225.

C.You can call Red Apples Gym at 6589517.

43.Which gym accepts(接受)mails from computer?

A.Green Apples Gym.

B.Red Apples Gym.

C.Green Trees Gym.

26.(6分)Rick is a good man.He makes birthday cakes in a store.His cakes are great and have very good prices,so many people buy his cakes.He makes friends with lots of his customers(顾客).They all like him very much.One evening,he wants to go home,but many of his old customers come in.Rick smiles(笑)to them,"I am sorry.It is late today.If(如果)you need cakes,please come tomorrow."One of them takes out a nice cake and says to him,"You make so many great cakes for us.This birthday cake is for you.Happy birthday,Rick."

44.Where does Rick work?

A.In a store.

B.In the classroom.

C.At school

45.His customers give(给)him.

A.many cakes

B.a birthday cake

C.some vegetables

46.One evening,many customers come to Rick's store because.

A.they want to buy cakes

B.they come for a party

C.that day is Rick's birthday.

27.(8分)There are twelve months in a year.My favorite month is October.

October 1st is National Day.We have a seven﹣day holiday(假期).During the holiday,my parents often take me to see my grandparents.There are also(也)some interesting school activities in October.On the 12th,we have a soccer game.I don't love basketball because it's difficult for me.But I love soccer.I love playing soccer and watching soccer games.We have a book sale on October 20th.I have three old books and I want to sell them.The art festival is fun.We have______on October 29th.My birthday is also on this day.October is a really great month for me.

47.The writer thinks basketball is.

A.difficult

B.interesting

C.relaxing

48.The underlined word"it"refers to(指的是)the.

A.soccer game

B.book sale

C.art festival

49.How many school activities are there in October?

A.Two.

B.Three.

C.Four.

50.The writer loves October NOT because.

A.he can have a seven﹣day holiday

B.his birthday is in October

C.there are thirty﹣one days in October.

第二节:还原句子(5选5,每小题5分,满分5分)根据短文内容,从短文的选项中选出能填入空白处的最佳选项.

28.(5分)Li Ming's uncle is a teacher in No.4Middle School.He has a good friend inthe school.

(51).His birthday is on May 1st.He is a teacher in the school,too.He is very funny.All of the teachers and students in the school like him very much.(52).

Mr.Fun is in China with his family now.(53),so he teaches students English.Mr.Fun likes playing ping﹣pong.(54).Mr.Fun likes music,(55).

第四部分:综合知识运用(共四节,满分10分)第一节:短文填空(共10小空;每空1分;满分10分)将下列单词或词组的适当形式填入空格.每空限填一词,每词只能填一次.

29.(10分)

It's December 20th.Class 2is having a(56).They sell some things at school.Dave sells apples,oranges and pears.Many people(57)his fruit.He makes(赚得)ten dollars a day.Lucy sells(58).She has T﹣shirts on sale.How much are(59)T﹣shirts,do you know?Oh,her T﹣shirts are(60)a good price.Each of them(61)five dollars.Jane sells(62)things.She has pens and(63)on sale.They're very nice.Her pens are(64)one dollar each.Her notebooks are two dollars each.Jane makes(65)dollars in the morning and five dollars in the afternoon.She makes twelve dollars a day.

题目解答

答案

ea ea ea it

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  • 12 3 45 6 7 8 910 11 12 13 14 15 1617 18 19 20 21 22 23 24 2526 27 28 29 30 31 32 33 34 35 3637 38 39 40 41 42 43 44 45 46 47 48 4950 51 52 53 54 55 56 57 58 59 60 61 62 63 64 请找出左图表的规则(至少5个)

  • 考虑下面的频繁3-项集的集合:⑴ 2, 3}, (1,2,4), (1,2, 5), (1,3,4), (1, 3, 5), (2, 3,4), (2, 3, 5), (3,4, 5)假 定数据集中只有5个项,采用合并策略,由候选产生过程得到4-项集不包含()A. 1, 2, 3, 4B. 1, 2, 3, 5C. 1, 2,4, 5D. 1,3, 4, 5

  • 下面哪个逻辑等价关系是不成立的()A. forall x-P(x)equiv -square xP(x)B. forall x-P(x)equiv -square xP(x)C. forall x-P(x)equiv -square xP(x)D. forall x-P(x)equiv -square xP(x)

  • 24.设二维随机变量(X,Y)在区域 = (x,y)|xgeqslant 0,ygeqslant 0,x+yleqslant 1 上服从均匀分布.求(1)-|||-(X,Y)关于X的边缘概率密度;(2)-|||-=x+y 的概率密度.

  • 下列命题中错误的是( )A B C D

  • 已知一元二次函数的图像的顶点坐标为(1,2),并且经过点P(3,-4),求:(1)函数的解析式;(2)函数图像的对称轴(3)函数单调减的区间。

  • 4.已知 sin alpha =-dfrac (3)(5), 且α是第三象限的角,则 cos alpha = __ ,-|||-tan alpha = __ o

  • 与十进制[1]数 45.25 等值的十六进制[2]数是_____。

  • https:/img.zuoyebang.cc/zyb_a9fbde2ddd269cef5638c27e19aff9b4.jpg.5dm 5dm-|||-18 dm一个底面是圆形的扫地机器人,贴合着一块地毯边缘行进一周(如图)。这块地毯的两端是半圆形中间是长方形。扫地机器人圆形底面的半径是https:/img.zuoyebang.cc/zyb_10216bc971f58ed03f5ceaf1efd30f89.jpg.5dm 5dm-|||-18 dm,它的圆心走过路线的长度是______https:/img.zuoyebang.cc/zyb_b5517f317a704553c4186b8deb5b7a51.jpg.5dm 5dm-|||-18 dm。​

  • 【单选题】设U=(u1,u2,u3,u4), 有模糊集合A、B:A = 0.1/u1 + 0.7/u2 + 0.6/u3 + 0.6/u4,B = 0.3/u1 + 0.2/u2 + 0.6/u3 + 0.4/u4,则模糊集合A与B的交、并、补运算结果正确的一项是 。A. A 与 B 的交运算: 0.1/u1 + 0.2/u2 + 0.6/u3 + 0.6/u4B. A 与 B 的并运算: 0.1/u1 + 0.7/u2 + 0.6/u3 + 0.6/u4C. A 的补运算: 0.9/u1 + 0.3/u2 + 0.4/u3 + 0.4/u4D. B 的补运算: 0.7/u1 + 0.8/u2 + 0.4/u3 + 0.4/u4

  • 已知等差数列 12 , 8 , 4 , 0...... 求它的通项公式an 和前 10 项 的和an

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