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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
I'm Henry, from America. This is my 【 1 】 (one) time in Japan. One day some new 【 2 】 (friend) invited me to eat out. At first, I was quite happy and learned 【 3 】 use chopsticks with them, but later problems started. Th
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无国界医生组织 In 1971 there was a war in a part of Nigeria called Biafra, in western Africa. People were dying, children were hungry and there was a lot of disease. There were thousands of people who needed medical help—but th
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纪念英雄的方式 Countries, cities and people all have their own heroes. There are different kinds of heroes: politicians, soldiers, film stars, sport stars and musicians. And there are many different ways of remembering them, to
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The star's trip to Long Beach Island is ________ secret.
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When I'm about to pay for the bill, I can't find my w ________ .
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Grandma is old and has ________ (difficult) in remembering everything well.
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She took manners lessons in order to behave ________ (proper) in social activities.
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Friends are people who share similar values with us. And keeping strong friendships is an important part in most people's life. Friendships can help us fight against loneliness, get rid of anxiety( 焦虑 ), and have better
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I think the most basic and powerful way to connect with another person is to listen. Perhaps, the most important thing we ever give each other is our ______ , and especially if it's given from our hearts. When people are
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I am a very shy girl. I have some 【 1 】 (difficulty) in communicating with strangers. To improve my 【 2 】 (communicate) skills, my parents consulted( 咨询 ) an expert. Here's what the expert told me. First, be confident. T
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(2020 原创 )Lucy is good at personal communication. She gets along well ________ her friends.
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(2020 原创 )It is already late. But I cannot fall a ________ after drinking coffee tonight.
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(2020 原创 )With the development of our s ________ , people's life becomes richer and richer.
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(2020 原创 )The flight from London to Paris has to be ________ (cancel)because of the fog.
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(2020 原创 )He has ________ (promise) not to smoke again. We should give him a chance.
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阅读短文,下列问题 D What should you do if you don't have a lot of time, but still want to get healthier? Don't worry. You're not alone. Most people want to get healthier and look younger, but they can't seem to have the time for
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阅读短文,下列问题 Lee Ming, Ivy, Tony and Terrence are from four different countries. The followings are their diet menus for one day: breakfast lunch dinner Lee Ming from China He eats porridge( 麦片粥 ). He doesn't like roast bre
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阅读短文,下列问题 B Doctors in Britain are worried because British teenagers eat lots of fried potatoes, sweets and fatfood. Most teenagers don't have enough fruit orvegetables and more than one million Britishschool children ar
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阅读短文,下列问题 A girl who graduated from a world famous university wanted to do translation work for authority leaders. She was so happy when she entered the British Embassy (大使馆). She thought it was the greatest happiness in
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完形填空 Today is Mary’s birthday, but her mother had to work late tonight. She1 Mary that they could have a party next week. Mary was very disappointed. Mary walked to school and hoped her friends would 2that she was eight
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