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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·选择题初中英语知识点》数词》分数###

The survey shows that ________ of the students ________ reading English novels.

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九年级·英语·选择题初中英语知识点》其他》词义辨析###鲁教版（五四学制）（2012）》九年级全册》Unit 3 It must belong to Carla.###北京课改版（北京出版社）（2007）》九年级全册》Unit 4 Michael Jorda###

The relationship between China and the USA is always _________________.

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九年级·英语·选择题-

— What shall we do now? — __________ it’s raining hard, let’s stay at home.

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九年级·英语·选择题初中英语知识点》冠词》不定冠词###

Aimee Carrero, 28, is _____US actress. She is the voice of Princess Elena on the new Disney show Elena of Avalor.

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九年级·英语·书面表达-

冬春交替之际 , 气温变化明显 , 也是疾病的多发季节 , 尤其是流感等。但是提前做好预防 , 就可以在很大程度上避免疾病的侵扰。正如一些医生所说 , 大家都应该重视自己的健康 , 不必去惧怕疾病 , 而应该积极去预防。据以下提示 , 用英语写一篇如何预防疾病的短文。写作要点 : 1. 尽量不要外出；外出要戴口罩； 2. 养成良好的生活习惯 , 如健康饮食 , 勤洗手 , 适度运动等； 3. 不要熬夜 , 注意休息； 4. ……

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九年级·英语·填空题-

根据短文内容，从方框中选择恰当的单词填空，并将单词填写在答题卡对应的横线上。每个单词只能用一次，每空一词。 try back killed government best much danger millions from cause As you may know, coral( 珊瑚 ) Is not a plant, but an animal. However, coral reefs( 珊瑚礁 )around the worl

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九年级·英语·填空题-

根据句意，用括号中所给单词的正确形式填空。【 1 】 The two ________ ( factory) were moved outside the city last year. 【 2 】 The higher we climbed, the ________ (thin) the air became. 【 3 】 In summer, it often rains ___________ (heavy) with str

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九年级·英语·单词拼写-

根括号内所给的中文提示，正确拼写单词。【 1 】 The singer is good at playing the ___________ ( 吉他 ) and making wonderful music. 【 2 】 Bob and Jim have been good friends ____________ ( 自从 ) they joined the same tennis team. 【 3 】 The cinema w

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九年级·英语·补全对话-

根据对话内容，从下面方框中选出恰当的句子补全对话。 A: Hello! This is Sam. 【 1 】 B: This is Lucy speaking. A:Lucy,shall we go for a walk along the beach? B: 【 2 】 I’m busy now. A: 【 3 】 I am making apple pies. A: Sounds nice! 【 4 】 B: Thank you.

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九年级·英语·阅读理解冀教版（2012）》九年级全册》Unit 2 Great People###北京课改版（北京出版社）（2007）》九年级全册》Unit 10 Revision One###

Molly Boylan is one of the most successful business women in Canada after setting up her cosmetic(化妆品)company Blazes in 1992. Though she is very successful， she says that she finds it harder every year to balance her bus

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九年级·英语·阅读理解-

The friendship between humans and dogs possibly began 14,000 years ago. Here are four examples of "a dog's life" in the human world today. Treated like a queen Tiffy is one of these dogs. Her owner, Nancy Jane Loewy, tre

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九年级·英语·阅读理解-

AI（人工智能）makes our lives easier and better. Let’s see the amazing AI. Cool driverless bus A bus door opens and you get on. Wait, where is the driver? Here is a new kind of driverless bus called Apolong. It can seat 14 peo

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九年级·英语·阅读理解-

Zak’s grandfather, Stan, was very famous. Why? Because he had a very, very, very long white beard( 胡子 ). One day Zak asked his grandfather, “When you sleep, do you put your beard over or under the quilt?” “I’m not sure.

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九年级·英语·填空题-

When I was in middle school, I felt I was always letting people down. Once I brought my ____ Daisy to my home. I noticed that all my family members seemed to ____ Daisy better than me. I felt very ____ . I even thought t

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九年级·英语·选择题初中英语知识点》句子种类》主从复合句》宾语从句》连接代词或连接副词引导###

—Do you know_____________? —Yes, we’ll take a bus there.

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九年级·英语·选择题初中英语知识点》句子种类》简单句》感叹句》how引导的感叹句###

—Look at my new dress. —Wow! _________beautiful it is!

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九年级·英语·选择题初中英语知识点》句子种类》简单句》疑问句》一般疑问句###

—Must I hand in the homework right now? —________. That’s the rule.

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九年级·英语·选择题-

— I went to your office at 9:00 yesterday morning, but you were not in. —Sorry, I ________with the manager in the meeting room at that time.