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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|}=
精选练习题目
Hello,boys and girls.This is a (1)______of my family. (2)______Frank.I\’m twelve years old.I\’m a student in No.2 Middle School.This is my father. (3)______ name is Dale Brown.He is a teacher in my school.And this is my
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My name is Alice White.White is my (1)______name.I am (2)______12-year-old girl from America.This is my quilt(被子).It (3)______nice.Do you know (4)______color it is?Yes,it\’s yellow and blue.On my quilt,it is a white coat
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假如你是李华,即将进入高中学习,请你写一封电子邮件给英国的笔友 Linda ,谈谈你对高中生活的向往和担忧,并请她给出建议。 参考词汇: Expectation( 向往 ) meet new classmates and teachers make decisions by myself choose favorite subjects … Worry have no time after-school activities fall
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Dear Mr. Friend, My name is Simon, and I am in Grade Nine. 1. 我非常喜欢足球。 I love watching football, reading about football, and, of course, playing football. However, my love of football has become the cause of my problem.
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In China, the 12 th month of the lunar calendar( 阴历 ) is called Layue. The month is full of interesting festivals and customs. Laba Festival, which is on the 8th day of Layue, is the first festival in this month. From th
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— My parents work in Yongzhou. What about ________ (you)? — They work in Guangzhou. I'm going to visit them this summer holiday.
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My family ________ (go) to Yongzhou botanical garden( 植物园 ) last weekend.
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With the ________ (develop) of 5G,Huawei makes people's life more convenient.
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— How does your English teacher go to school? — She usually ________ (drive) to school.
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The Yangtze is the longest river in China, ________ the Amazon is longer than it.
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Touched by doctors and nurses in Wuhan, Li Ming wants ________ (be) a doctor when he grows up.
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The size of each class in Yongzhou now is ________ (small) than that in 2017.
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The birthday of the People’s Republic of China falls ________ October 1 th .
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— How much is the watch? — It's ten ________ (dollar).
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Qu Dongyu is ________ official( 官员 ) of the United Nations, who is from Yongzhou.
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Lin Tao is 20 years old. He was brave enough to _______ his neighbour from a fire. On 10 May, Lin Tao was at home. Suddenly, he heard someone shouting “Fire Fire! Help!” He ________ outside and saw a lot of smoke from ne
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Seventy percent of our planet is covered by one huge body of seawater-the ocean. In 2008, the United Nations recognized( 确立 ) June 8 as World Oceans Day. It's a day to think about the important role that the oceans play
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Karachi, Pakistan, is one of the hottest cities on Earth. In June 2015, more than 1,000 people died there during heat wave( 热浪 ). “It was a terrible time,” Shahzad Qureshi said. “We needed to do something about it.” Afte
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Malala was born in Pakistan on July 12, 1997. When she was young, Taliban fighters took over her hometown. Taliban is an extremist( 极端主义 ) group that does not believe in a girl's right to education. They said girls shoul
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The proper ways to save the drowning ( 溺水 ) student. Dos · Shout loudly and ask adults for help. At the same time, dial 110. · Find the objects which can float such as wood and bags filled with empty plastic bottles and
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