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#1 · 常错题

#2 · 常错题

将循环小数化为分数:整数、有限小数、循环小数都可以化成分数,整数和有限小数化成分数容易,循环小数如何化成分数呢?请看下面的例子. 将循环小数$0.288\ldots $化成分数:将$0.288\ldots $分别乘$10$和$100$,得$2.88\ldots $和$28.88\ldots $,两个得数相减得$26(两个得数小数部分相同)$,而相减所得的$26$应该是$0.288\ldots $的$\left(100-10\right)

#3 · 常错题

今年市委市政府积极推进创建“全国文明城市”工作，市创城办公室为了调查初中学生对“社会主义核心价值观”内容的了解程度$($程度分为：“$A-$十分熟悉”，“$B-$了解较多”，“$C-$了解较少”，“$D-$不知道”$)$，对我市一所中学的学生进行了随机抽样调查，根据调查结果绘制了两幅不完整的统计图如图，根据信息解答下列问题： $(1)$本次抽样调查了多少名学生； $(2)$补全条形统计图和扇形统计图； \

#4 · 常错题

#5 · 常错题

一批水果的标准质量是$30$千克,超出标准质量记为正,低于标准质量记为负,现记录如下:$+8$,$-9$,$-5$,$+7$,$-8$,$-6$,$+7$,$+10$. $(1)$这批水果总共有多少千克? $(2)$第一天按每千克价格$5$元卖出了这批水果的一半,第二天为了吸引顾客把第一天卖水果的价格降价$20\%$后作为新的价格,卖完了剩下的水果,请计算一下这批水果一共卖了多少钱?

#6 · 常错题

分类讨论思想是数学的重要思想,在学习有理数的过程中,也深有感受$!$ $(1)$当$ab \lt 0$时,若$b \gt 0$,$|a| \lt |b|$,则$a+b \_\_\_\_\_\_0$； $(2)$当$abc \lt 0$时,若$ab \gt 0$,则$c \_\_\_\_\_\_0$； $(3)$已知$a$,$b$,$c$是非零有理数,则$\frac{a}{|a|}+\frac{b}{|b|}+\frac{c}{|c|}=

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九年级·英语·填空题必备词汇

Amy wants to keep her old things because they bring back ______ /swi：t/ memories.

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九年级·英语·信息匹配语篇范围

What Can Help Us When We Fail？ Failure is a part of life since our earliest moment of life.We often think of failure as something bad. （1） ______ ，which is neither bad nor good.However,what can help us when we fail？ ● Do

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九年级·英语·阅读理解地点说明、介绍

The world's highest highway tunnel（公路隧道），Mila Mountain Tunnel,was open to traffic on April 26，2019，at an altitude（海拔） of over 4，750 meters above sea level in Southwest China's Tibet. The two-way tunnel is over 5.7 km lon

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九年级·英语·阅读理解个人故事

Henry was going through a very hard time.His wife passed away one month ago.He thought his life became meaningless.Henry sat in his house sadly and did nothing. One day,Henry's neighbor,Lisa,saw him from her yard.She had

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九年级·英语·阅读理解个人故事

Old Man Used His Own Money to Send 33 Strangers to College A retired carpenter（退休的木匠）from Des Moines has helped send 33 kids to college since his death in 2005. Dale Schroeder was a simple,honest man.He grew up poor and

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九年级·英语·阅读理解广告

A House for Rent（租） We have a comfortable three-bedroom house to rent.The house was built four years ago,but it is still in very good condition now.The house includes： * one large livingroom * three bedrooms *a kitchen *

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九年级·英语·填空题记叙文

It's hard to be an astronaut's son.Everyone expects you to be （1） ______ .I'm jut a normal eleven-year- old kid.My father is so good at everything.I often wonder （2） ______ my father ever had a son like me. One morning,m

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七年级·英语·填空题问答题

Look!The boys of the Class 2 are playing football in the football ______（场地）.

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七年级·英语·填空题史地常识类阅读;文中细节

Do you want to have fun with your favourite Disney characters?Soon,you can enjoy yourself at Shanghai Disney Resort—the sixth Disneyland park in the world. It will have new attractions for Chinese people.Here are some of

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七年级·英语·填空题人物故事类阅读

Sandra was a seven-year-old girl.Her best friend was her neighbor,but she moved to another city about a month ago.Sandra was unhappy about her friend\’s move.Now they send emails and text messages to keep in touch. Last

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七年级·英语·填空题人物故事类阅读

NOTICED BOARD Lost My black handbag was lost in the school library last Wednesday.My student certificate and key to my bike are in it. Will the finder please call David at 39363096?Thanks a lot! David Football Match Clas

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七年级·英语·填空题记叙文;人物故事类阅读;判断推理;文中细节

Harry did not stop his car at some traffic lights when they were red,and he hit another car．Harry jumped out and went to it．There was an old man in the car．He was very frightened and said to Harry．"What are you doing?You

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七年级·英语·填空题问答题;任务型阅读

Do you know some people often love to play this game?It is an interesting game（1）______"Musical Chairs"．It is easy to play and most people enjoy it．What you（2）______are some chairs and a tape-recorder．Put the chairs in a

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七年级·英语·选择题情态动词;虚拟语气

-Don't shout in the library．Please keep quiet．- ．（）

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七年级·英语·选择题形容词

-Would you like cakes?They are so delicious．- ．I'm full．（）

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七年级·英语·选择题名词

Amy's father is a manager．He works in a ．（）

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七年级·英语·选择题动词;动词词义辨析

In spring,you can the whisper of the flowers if you carefully．（）