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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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Hutongs are old-style city streets.In Beijing,they are an important part of the city culture.Thanks to Beijing\’s long history,almost every hutong has its story,and some even have to do with historic activities.Different
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DIY is becoming more and more popular.It stands(1)______ "Do lt Yourself." Many people like it.There are many(2)______ (reason) for this,and here are some of them. First,DIY is(3)______ (cheap) than buying something in t
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假设你是李华,你学校组织了一次主题为"家乡在发展"的英语演讲比赛.请根据以下表格信息,以"Great Changes in My Hometown"为题,写一篇不少于80词的演讲稿.全文可适当发挥. 要求:(1)下列表格中提供的信息不少于三项. (2)文中不能出现真实的姓名和校名. Twenty years ago Now small houses tall buildings poor medical care good medica
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为增进校园文化交流,育英中学将与英国一学校开展一次"云访学校"的线上活动.假如你是该校学生代表,请根据学校地图(如下),向英国师生介绍校园的建筑. 注意:(1)短文须包含图示所有信息,可适当发挥. (2)短文中不得出现真实的人名、校名和地名. (3)词数50个左右(开头已给出,不计入总词数). Welcome to our school.Let\’s look at the map of our school._______
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Nowadays,the smart(智能的)phone is very popular in our life.You may know a lot about smart phones.But what about smart cities? When you (1)______ up in the morning,you say "(2)______ the window" to a computer and it opens t
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Niska,a technology company,has opened an ice-cream shop in Australia.It\’s an unusual shop.because you can\’t see any human workers there.It is managed by three robots.Pepper,Eka and Tony serve people their favorite ice
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The weather in Sanya is not so_______as that in Jilin in winter,so my grandparents usually spend the winter in Sanya.( )
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实地考察旅行给了比尔呆在户外和接近自然的机会. Field trips give Bill a chance to ______ and ______.
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请从下面两幅图中选择一幅图进行描写. 要求:(1)认真观察图画,把观察到的内容写成一段通顺的话. (2)可以给图中人物起名字,展开合理的想象. (3)作文内容逻辑合理,语篇完整,关联性强,才可以得满分. (4)不少于五句话,注意规范书写. 图1 图2
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Look at this photo.The first woman on the left is our ______ .(班主任)
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morning greet teach good too am other meet name everyone Hello!My(1)______ is Lin Tao.Frank is my English name.I (2)______ in Class Three in No.1 Middle School. It is 8:00 in the (3)______ .At the gate(大门)of the school,I
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Don\’t you think it\’s silly of him ______(not catch) the chance?
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Nowadays,AI(人工智能) is playing a big role in our world.It helps us with many things,like work and everyday tasks.Some people are even making friends with AI,which is a new and interesting change. In China,this is happening
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