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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·填空题教育文化类阅读

—The oral English test for the senior high school entrance examination is about to start. —To get high marks,we will pay more attention to ______ (improve) our pronunciation.

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九年级·英语·填空题历史文化类阅读

A tree has roots.People have roots too.If you get to the root of a problem,you will solve it.It\’s the same thing with words.Dig deeply into a big,unfamiliar word and you will understand where it came from. As readers,es

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九年级·英语·填空题历史文化类阅读

All young people dream of travelling the world.They are excited and very eager (渴望的) to see new sights.However,they have little idea how they would really do it if given the chances.Because their knowledge of geography i

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九年级·英语·选择题历史文化类阅读

Sophie and I are good friends. We___ each other for four years.( )

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九年级·英语·填空题人生感悟类阅读

I\’m Karol,a 19-year-old student from Honduras.For me,volunteering has been like a school of life where I\’ve learned a lot about myself.When I was 13,I started my volunteer work by (1)______(修理)bikes.In the neighborhood

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九年级·英语·填空题人生感悟类阅读

As a teenager,I had a lot of anger (愤怒) and was not good at communicating with my parents. One day,when I was getting ready for school,my mother handed me a T-shirt.It was my father\’s,not mine.At that time,I was taller

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九年级·英语·解答题图表作文

你经常用手机阅读吗?有人认为用手机阅读方便且花费少;也有人认为用手机阅读对眼睛有害,并且容易使人沉迷其中.校刊英语专栏正在以"是否应该使用手机进行阅读?为主题开展征文活动.请你根据写作要求,结合自身实际,用英语写一篇短文,向专栏投稿. Do you think we should read on mobile phones? What are your reasons? What advice would you like to giv

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九年级·英语·选择题感叹句

—________ exciting film it is! —Yes,we enjoyed ourselves.( )

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九年级·英语·填空题感叹句

The driver was p ______ because he broke the traffic rules.

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九年级·英语·填空题英译汉

Tai chi (太极) is a symbol of Chinese culture.It (1)______ first developed in China as wushu,but now it\’s becoming one of (2)______ most popular sports around the world.It\’s practiced by over 100 million people in more (

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九年级·英语·选择题政治经济类阅读

It\’s great that China has played _______ important role in fighting against COVID-19 all over the world.

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九年级·英语·填空题英译汉

在瑞士,如果去参加会议你应当准时.我现在已经习惯早早离开家以避免交通拥堵. In Switzerland,you\’ re ______ to be on time if you go to meetings.Now I\’m getting used to ______ my house early to avoid heavy traffic.

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九年级·英语·单词拼写现在完成时的被动语态

A. 根据下列句子及所给汉语注释,写出空缺处各单词的正确形式,每空只写一词。 【 1 】 Those young men are ________ ( 渴望的 ) for success. 【 2 】 The little boy ________ ( 后悔 ) making his mother angry just now. 【 3 】 Do you know one of the greatest ________ ( 钢琴家 )

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九年级·英语·选择题现在完成时的被动语态

—Do you need any help? —No, thanks. We ______ a lot of support since last year.

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九年级·英语·填空题现在完成时的被动语态

A. with B. teaching C. walls D. deep E. warm F. bring G. often H. animals I. quite J. found Thousands of years ago, people had to hunt(打猎)for food. They lived in caves(洞穴)and needed fire to keep (1) . Some of them drew p

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九年级·英语·选择题现在完成时的被动语态

Great changes ______ in our hometown in the past ten years.( )

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九年级·英语·选择题现在完成时的被动语态

-The air here is much fresher than before. -Exactly, a lot of trees ______________ in the past few years.( )

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九年级·英语·选择题现在完成时的被动语态

Many of Moyan's books ______ into other languages so far.

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九年级·英语·填空题逸闻趣事类阅读

I will tell a story-Oliver and Patch.Oliver is a lost little boy.He doesn\’t know anybody and is afraid in a big city.One day he meets Patch,a little dog who is also lost.The two become best friends.They help each other.

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九年级·英语·填空题逸闻趣事类阅读

Without stopping,he drove her ______(direct) to her hotel.

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