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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·填空题新闻报道类阅读

Harbin is in the northeastern part of China.It is a beautiful city with a long history.The temperature there is very low in winter.Harbin is famous for ice and snow.Every year visitors from all around the world come to v

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九年级·英语·填空题表语从句

A:Hi!Kate.Are you free this Sunday? B:Yes,nothing much.What are you going to do,Billy? A:（1）______My paper cutting works will be shown there. B:Wow,you are so great!（2）______ A:They are about flowers,birds and fishes.The

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九年级·英语·填空题一般现在时的被动语态

Now the old adding machine (replace) by a computer.

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九年级·英语·填空题文学作品类阅读

If you love reading books，you must know about the book The Little Prince．It's a famous novel written by a French writer．As one of the best-selling books in history，it has been sold as many as 200 million copies in 253 la

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九年级·英语·填空题文学作品类阅读

Many of you have heard a Cinderella （灰姑娘） story，but you may not know that there are over a hundred different ways to tell the Cinderella story．When writers tell the same story in a different way，it is called their"versio

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九年级·英语·解答题文学作品类阅读

Tape-Measure Murder is a short story by Agatha Christie．In the story，Miss Politt，the dressmaker，finds that Mrs．Spenlow is dead in her house in a small village called St Mary Mead．Everybody，including the police，thinks tha

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九年级·英语·选择题状语从句

The Greens always go somewhere interesting the holiday begins.（）

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九年级·英语·填空题句型转换

Children had great fun playing in Disneyland．（改为感叹句） ______ great fun children had______ in Disneyland!

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九年级·英语·选择题语态的辨析

The Yangzhou Taizhou International Airport ___ in 2012and it has been in use for about 4years．（）

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九年级·英语·选择题语态的辨析

More chances _____ for students to learn from each other if working in groups．（）

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九年级·英语·选择题语态的辨析

The International Kite Festival____________ in Weifang every year．（）

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九年级·英语·填空题一般现在时的被动语态

（2022九上·广西壮族自治区开学考） You can go out if your homework （do）.

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九年级·英语·选择题语态的辨析

Not J．K．Rowling but her works _______ us excited．（）

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九年级·英语·填空题不定式

To improve his ______ （发音） of English,Su Yiming practised a lot with his foreign friends.

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九年级·英语·选择题不定式

Don\’t forget ________ windows when you leave the room.（）

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九年级·英语·填空题文学作品类阅读

Maki Kaji,a Japanese man,was known as the Father of Sudoku．Mr．Kaji was a puzzle（智力游戏）lover who helped turn Sudoku from a simple number challenge into a game played around the world． Mr．Kaji started Japan\’s first puzzle

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九年级·英语·选择题状语从句

—I wonder if he ________ us in the dancing tonight. —I believe if he ________ his homework,he will join us.（）

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九年级·英语·选择题感叹句

great progress Linda made!She got full marks in the listening test.（）

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九年级·英语·句型转换一般现在时的被动语态

（2023九上·上海市开学考）Jane writes to her parents every month. (改为被动语态) Jane's parents to every month.

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九年级·英语·填空题一般现在时的被动语态

（2023九上·宁波开学考） It is (建议) that people should have a short nap on hot summer afternoons.