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#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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七年级·英语·单词拼写Unit 7 Sports and Good Health

There was a rain yesterday evening. So the t ________ was low this morning.

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七年级·英语·填空题Unit 8 Summer Holiday Is Coming!

Autumn is coming. The t 【 1 】 is going down. Have you 【 2 】 (notice) golden yellow leaves fall from trees? For Chinese people, autumn is a special season b 【 3 】 it's a time for resting and rebuilding. According 【 4 】 Tr

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七年级·英语·单词拼写Unit 8 Summer Holiday Is Coming!

(2020 原创 )I will fly to Shanghai tomorrow. So please w ________ me up at six.

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七年级·英语·填空题Unit 8 Summer Holiday Is Coming!

(2020 原创 )There ________ (be) a big tree in front of the house. Later it was cut down.

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七年级·英语·填空题Unit 8 Summer Holiday Is Coming!

(2020 原创 )You can give us an ________ (introduce)about your plan before the meeting starts.

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七年级·英语·填空题Unit 8 Summer Holiday Is Coming!

(2020 原创 )Julia ________ (decide) to do a part­time job during the summer vacation yesterday.

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七年级·英语·填空题Unit 8 Summer Holiday Is Coming!

(2020 原创 )It is ________ (cloud) today. Let's climb the mountains.

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九年级·英语·书面表达Unit 5 Action

假设你是九年级(一)班的张蕊,在学习本单元的时候,老师让你们对不同的电视节目发表自己的看法。请你根据下面表格中的提示信息,写一篇80词左右的发言稿,说明自己的情况,可适当发挥。 节目 态度 原因 soap operas can't stand boring and meaningless game shows love exciting and enjoyable news don't mind educational

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九年级·英语·单词拼写/单词释义Unit 5 Action

Henry was a kind, good boy. However, his father was dead, and his mother was very poor. He wanted (1) (help) his mother because she couldn't always make enough money to buy food (2) her family. One day, a man gave him a

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九年级上·英语·书面表达Unit 4 Problems and advice

假如你的好朋友Lynn的父母对她期望很高, 希望她每科都拿到A, 她努力了但怎么也达不到。她写信给你, 希望能得到你的帮助。请根据以下要点提示写一篇英语短文。 要点提示: 1. 告诉父母你已尽力, 并跟他们讨论, 请教方法;2. 向老师询问学习方法; 3. 按照父母以及老师教的方法学习, 不断努力。要求: 1. 信中不得出现真实校名和姓名; 2. 条理清楚, 意思连贯, 语句通顺, 标点正确; 3. 80词左右。

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九年级上·英语·阅读理解Unit 4 Problems and advice

阅读理解 Some people think only school children do not agree with their parents. However, it is not true. Communication is a problem for parents and children of all ages. If it's hard for you to communicate with your parents

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九年级上·英语·书面表达Unit 3 Family life

写作我国拥有大量的自行车。但随着经济(economy)的发展,越来越多的家庭购买了汽车。请写一篇英语短文,阐述自行车和汽车各自的优缺点,并谈谈自己的看法。词数:100左右。参考词汇:outstanding,advantages,convenient,traffic,healthy,exhaust gas (废气),pollute

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九年级上·英语·书面表达Unit 3 Family life

每个人都是独一无二的,都有与众不同之处,人们喜欢你一定会有很多原因。请以“What makes me a good friend?”为题写一篇英语短文。要求:1. 语言表达准确,短文连贯通顺;2. 文中不得出现真实姓名和学校名称;3. 80词左右。What Makes Me a Good Friend?

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九年级·英语·书面表达Unit 3 Pets

Writing (作文) Write a passage of at least 60 words on the topic "My Opinion on Raising Pets" (以“养宠物之我见”为题,写一篇不少于 60 个词的短文。) Use the following points as a guide. (短文须包含下列要点。) * Do you have pets at home? * Do you like raisi

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九年级·英语·任务型阅读Unit 3 Pets

An Englishman was showing a foreign visitor around London. "What's this strange building?" asked the visitor. "This is the Tower of London." "I see. How long did it take you to build it?" "About 500 years." "In my countr

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九年级·英语·任务型阅读Unit 4 Life on Mars

Spring Festival has just passed. were you excited about getting lucky money and watching the Spring Festival Gala ( 春节联欢晚会 ) on TV? Spring Festival is a happy time. But do you know how we celebrate it? Whether Chinese or

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九年级·英语·阅读理解Unit 4 Life on Mars

Do you believe there are aliens? We’ll make a phone call and you will know. A group of Americans can help. They made a device( 装置 ) to “talk” to aliens. If you want to talk to an alien, you only need to visit www. TalkTo

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九年级·英语·书面表达Unit 3 Robot

根据所给中英文提示语,以Introduction to A Robot 为题写一篇60字以上的短文。 注意语句扩展, 意思连贯。 短文开头已经给出。 提示: 1.机器人可以分四个部分: sensing(感觉), movement(运转), energy(能量), intelligence(智能). 2.简单介绍这四个部分的情况. Introduction to A Robot A robot is a system that conta

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九年级·英语·完成句子Unit 3 Robot

【1】昨天早上我起床很早,为了考试不迟到. Yesterday morning I got up early _______ ______ _____ _____ be late _____ the exam. 【2】我不知道这台电脑是何时感染到病毒的. I don’t know when this computer ______ _____ _____ . 【3】顺便问一下,谁第一个拥有机器人。 By _______ ________

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九年级·英语·阅读理解Unit 1 We toured the city by bus and by taxi

Do You Go To Sleep In Class? The “Acronym”, our student newspaper, reports that most students go to sleep at 1: 30 a. m. Even if that’s an exaggeration( 夸张 ), it’s too close to the truth. Scientists say teenagers should

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