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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·补充句子翻译

The plane flew at a ______ （高度） of three thousand meters．

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九年级·英语·补充句子翻译

It's necessary for us to ______ （等待） in line in public．

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九年级·英语·补充句子翻译

The shirt is too small for me．Could you show me ______ （另一） one？

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九年级·英语·补充句子翻译

She is a pretty and ______ （可爱的） girl．We all like her．

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九年级·英语·补充句子翻译

Green ______ （茶） is a popular drink in China．

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九年级·英语·完成对话补全对话

A：Helen，where did you go last night？ B：I went to Wanda Cinema． A：（41） ______ B：Quite good．It has the best service．（42） ______ A：Yes，I've been there several times．Did you see the film Doctor strange last night？ B：No，I did

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九年级·英语·阅读理解日常生活类

Why are dogs our best friends．Maybe because they can understand our words much better than we thought，according to a study in Hungary．It found that dogs understand not only what we say，but also how we say it． "The result

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九年级·英语·阅读理解日常生活类

We spent holidays with our uncle．He loved to go on walks to collect stones．One day，he bought us backpacks（背包） and asked us to go to the mountain with him and carry the stones． The whole day we walked around．Every now and

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九年级·英语·阅读理解日常生活类

Many of you may want to study abroad after high school．But at the same time，more and more international students from other countries are coming to study in China． 397，635 international students came to China in 2015．Acc

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九年级·英语·填空题标题判断

Do something for others There are always some old clothes you don't want．And there is always some food you don't eat．What can you do？Send them to the two place． Wall of Kindness You can see Wall of Kindness in many citie

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九年级·英语·填空题记叙文

A boy was sent by his parents to a boarding（寄宿） school．Before going to the boarding school，this boy was the (1) student in his class．He was the top in every competition．But the boy changed after leaving home and attendin

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九年级·英语·选择题宾语从句

Could you tell me________？ Once a month．（）

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九年级·英语·选择题动词短语辨析

You should _______your shoes before you enter the dance room．（）

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九年级·英语·选择题时态

I think all the heavy and difficult jobs ______by machines and robots in the future．（）

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九年级·英语·选择题时态

If he _______Guilin，he'll probably go to Yangshuo．（）