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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·解答题篇章理解
More children in China are putting on weight.In 2018，16 percent of Chinese children and teenagers were overweight or obese （肥胖的），according to the National Health Commission. （A） .According to the World Health Organizatio
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九年级·英语·单词拼写/单词释义语篇范围
use express pair guest total like make spirit important spend name full In August 2018，a worldwide competition was started to create the mascots for the Beijing 2022 Winter Olympic and Paralympic Games.A（n） (1) of 5，816
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九年级·英语·信息匹配语篇范围
Children's life has changed a lot in the past few years.But do they have a happier childhood than we did？ (1) I have four brothers and sisters,and my memories are all about being with them.We used to play board games in
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九年级·英语·阅读理解日常生活
Playing video games can be a fun way to spend time with friends.In some schools,teachers use games like Minecraft to encourage teamwork and communication. But for some players,gaming is an unhealthy habit.They stay up la
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九年级·英语·阅读理解广告
中国国家博物馆 NATIONAL MUSEUM OF CHINA You can book a free ticket in advance or get one on the day of visit.But if you see special exhibitions in the NMC，you should pay for the ticket.If you don't book a ticket,you can go to t
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九年级·英语·阅读理解卫生与健康
Recycle,reduce and reuse are three golden rules of environmental protection.Today we'd like to talk about the fourth rule：repair. In old days,when something broke,people sent them to repairmen.Nowadays,however,the idea o
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九年级·英语·填空题说明文
Sometimes it may be hard to tell others that you're feeling sad or worried.But if you keep these (1) in your heart and don't talk about them with others,you may fall ill at last!You can talk with someone who (2) a lot ab
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九年级·英语·补全对话英文要点
A： Hi, Rick. Zhou Ming invited us to have dinner with his family. B： Really？ I'd love to go. (1) A： Sure. In China people put all the dishes on the table and they share the food. B： That's interesting. I know they usuall
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九年级·英语·选择题固定搭配
- Walking more is good for our health. - You're right. So I'd rather an hour's walk to work than consider a car.（ ）
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九年级·英语·选择题相互代词
--Do you know the woman is standing outside the classroom？ --Yes, She is Tom's mother, my neighbor.（ ）
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九年级·英语·选择题被动语态
The mobile phone has influenced people's life a lot since it _______．（ ）
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九年级·英语·选择题必备词汇
-Do you believe that paper is made _______ wood？ -Yes，I do．And you can see that books are made________ paper．（ ）
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九年级·英语·选择题固定搭配
We _____driving to work now,although we _____walk to work.（ ）
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九年级·英语·选择题感叹句,副词辨析
exciting news!We've never had a long vacation before.（ ）
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九年级·英语·选择题介词辨析
Class 11 are all proud their basketball team,and Class 5 take pride their football team.（ ）
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九年级·英语·选择题问答/审问
-What were you doing at eight o'clock this morning？ - .（ ）
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九年级·英语·选择题现在完成时
Although his pet dog for nearly two years,he is still sad about it.（ ）
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九年级·英语·选择题冠词
My friend,Wang Hong,can play chess.She can also play guitar.（ ）
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八年级下·英语·choice专题08 单项选择专练100题（二）（人教版）
—Would you please go to the movie with me tonight? —Sorry, I need to prepare for the exam. ________ I know, Tom wants to see a film tonight. A．As far as B．As long as C．As soon as D．As often as
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八年级下·英语·choice专题08 单项选择专练100题（二）（人教版）
Just like humans, animals will do their best to protect their young babies when they are ________. A．in danger B．on duty C．in need D．on time
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