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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·选择题日常生活类阅读

—What is he worried about? —Math,another thing that he very difficult.（）

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九年级·英语·填空题日常生活类阅读

Have you ever watched a movie with your partners on the weekend?Do you know what you should do and what you shouldn\’t do in the cinema?If you want to figure out the answers,you are supposed to have a look at your film t

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九年级·英语·填空题日常生活类阅读

You might hear a lot about Ireland which is well-known for her beauty.Here are some places of interest that you cannot miss. Diamond Hill The Diamond Hill is the second most popular in Ireland.It\’s more than a hill；it\’

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九年级·英语·填空题人物故事类阅读

There was a man playing the piano in a bar.He was a good piano player.People came out just to hear him play.But one night,a customer told him he didn\’t want to hear him just play anymore. He wanted him to sing a song. T

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九年级·英语·填空题新闻报道类阅读

A:Would you like to come to my home and celebrate Mid-Autumn Day tomorrow? B:Mid-Autumn Day?（1）______ A:You thought right,but this year both holidays happen to fall into the same week. B:（2）______ A:Because the National

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九年级·英语·选择题宾语从句

—Your head teacher has set up a WeChat group.Could you tell me ? —It is more convenient to communicate with our parents.（）

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九年级·英语·选择题宾语从句

—Do you know ________ a parents\’ meeting this weekend? —Sorry.I\’m not sure.（）

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九年级·英语·选择题宾语从句

Could you tell me which place would be a good______for me______?（）

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九年级·英语·选择题宾语从句

-Do you know ______? -You can speak and read more.（）

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九年级·英语·选择题一般现在时的被动语态

Generally speaking, tea plants ________ on the sides of mountains.

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九年级·英语·选择题现在完成时的被动语态

Three books _____ by the young man in the past two years. All of them are very popular.

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九年级·英语·句型转换语法

I think the TV set was invented before the radio. （改为否定句） I ____________the TV set ______invented before the radio.

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九年级·英语·句型转换语法

We plant trees every year. （改为被动语态） Trees____________by us every year.

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九年级·英语·句型转换语法

The machine was invented by . （就画线部分提问） ____________ the machine ______by？

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九年级·英语·选择题新闻报道类阅读

So far,the scientists the first plants in lunar soil successfully.（）

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九年级·英语·填空题新闻报道类阅读

It\’s now 2024.At nine in the morning,Huang Wen begins his day by diving（潜水） from a ship into the waters off Weizhou Island in Beihai city,Guangxi.There,he carefully looks after broken coral reefs（珊瑚礁） as part of his dai

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九年级·英语·选择题社会文化类阅读

-Many products made in China are very popular in the United States. -Yeah.Americans can avoid buying Chinese products.（）

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九年级·英语·填空题状语从句

Linda got up early in order to catch the early bus.（改为同义句） Linda got up early ____________ she could catch the early bus.

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九年级·英语·填空题状语从句

The boy asked his father if the earth______（move） around the sun in surprise．

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九年级·英语·选择题状语从句

The girl is old enough to .（）