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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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七年级·英语·阅读理解Unit 9 International Food Festival

There was a traveler who was wet and cold because he had ridden in the rain. At last he reached a country inn. The inn was so crowded with people that he could not get near the fire. So he called the inn keeper, "Take so

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七年级·英语·句型转换Unit 9 International Food Festival

Rewrite the following sentences as required （根据所给要求 , 改写下列句子）【 1 】 He wanted to make some cakes for his mother. （改为一般疑问句） __________ he ___________ to make any cakes for his mother? 【 2 】 I like English better than any

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七年级·英语·填空题Unit 9 International Food Festival

Complete the sentences with the given words in their proper forms（用括号中所给单词的适当形式完成下列句子）【1】Mr. Hu is going to take part in an ____________ conference this coming Friday. (nation) 【2】After the earthquake many children beca

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七年级·英语·选择题Unit 9 International Food Festival

- May I have a bar of chocolate? -______________________________.

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七年级·英语·选择题Unit 9 International Food Festival

I sometimes teach my son_____________ a paper plane.

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九年级上·英语·书面表达Unit 2 Great minds

请根据下列表格内容写一篇英语小短文, 介绍阿根廷足球运动员梅西。姓名 Messi 出生日期 1987.6.24 出生地 Argentina 运动项目足球所属运动队 Barcelona 位置前锋 (forward) 童年时期体弱经常生病, 喜爱足球, 训练刻苦。特长控球好, 射门精准。职业生涯 2003年至今, 效力于Barcelona, 帮助球队多次夺取欧洲冠军杯。 2014年代表阿根廷国家队征战巴西世界杯, 帮助球队获

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九年级上·英语·阅读理解Unit 2 Great minds

阅读理解 What can we learn from the special, very successful people in the world who make the impossible possible? Lesson 1: Ways of creative thinking are needed Bill Gates and Mark Zuckerberg both dropped out of college. Th

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九年级上·英语·阅读理解Unit 2 Great minds

阅读理解 We often hear stories of animals rescuing people. But now someone has aged to return the favour. The event took place one snowy January morning. Thomas Smith was walking his dog, Jack, in the park. "As I was walking

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九年级上·英语·阅读理解Unit 2 Great minds

根据短文内容，选择正确答案。 If you often feel tired and the doctor can't find anything wrong with you, you may be in a state of subhealth(亚健康). Subhealth is a state between health and illness. Most of the subhealthy people are middle

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九年级上·英语·阅读理解Unit 2 Great minds

阅读理解 As China's economic power grows, its culture also develops. Away from the high street and Western luxury brands (奢侈品牌) , there are a growing number of brands in China. Chinese designers are bringing their brands to

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九年级上·英语·阅读理解Unit 2 Great minds

根据短文内容，选择正确答案。 Feeling sad? Go shopping, because it really can make you happy again.Scientists interviewed hundreds of shoppers at shopping centers, and they asked them to keep diaries of their shopping trips. The people

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八年级·英语·句型转换Unit 7 Nobody wins (Ⅱ)

They hid behind some brushes and kept silent. （画线提问） ______did they ______ and kept silent？

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八年级·英语·句型转换Unit 7 Nobody wins (Ⅱ)

The steel bars rose slowly from the ground . （改为一般疑问句） ______the steel bars ______ slowly from the ground？

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八年级·英语·句型转换Unit 7 Nobody wins (Ⅱ)

The girls are good singers. （改为感叹句） ______the girls sing!

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八年级·英语·句型转换Unit 7 Nobody wins (Ⅱ)

He didn't tell me anything about it. （保持原意） He ______ me about it.