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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·单词拼写/单词释义必备词汇

We must be______ (勇敢的) enough to take on new challenges in our life.

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九年级·英语·填空题必备词汇

To complete the work,he drank some coffee to keep himself ______ (wake).

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九年级·英语·填空题必备词汇

The ORBIS doctor advised the girl to have the operation to prevent her eye problem getting much______( bad).

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九年级·英语·填空题必备词汇

Qi Baishi was one of he most famous ______ (art) in China.

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九年级·英语·解答题篇章理解

British people pride themselves on their polite manners towards one another in public.They often use the word "sorry"—even when they don't really mean it!Usually,if they want to ask a stranger for the time,they would sta

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九年级·英语·阅读理解日常生活

Imagine you are walking through the woods and you see a small dog.It looks cute and friendly.You move up to pet the dog.Suddenly it barks and tries to bite you.The dog no longer seems cute and you feel afraid and possibl

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九年级·英语·阅读理解个人故事

I was bullied quite badly in high school.A kid would try to make me feel terrible in every way he knew.For example,he would hit me in the head,call me ugly and stupid,make fun of me and—of course—threaten to hit me harde

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九年级·英语·阅读理解科普知识与现代技术

A 22-year-old British student has invented a mobile fridge that could save millions of lives across the world. Will Broadway's "Isobar" has been designed to keep vaccines(疫苗) at the ideal temperature while they are being

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九年级·英语·阅读理解广告

The Blue Metropolis Literary Festival is coming! It will host nearly 120 family-friendly activities from April 11 to April 17.More than 40 writers and storytellers,including local writers Monique Polak and Lydia Lukidis,

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九年级·英语·填空题记叙文

On the first day of my 11th grade,I wasn't excited when I looked at my timetable and saw "Biology II-Robin Haworth,Room 301".I had never liked biology and I found it (1) .After I entered the room,I took a seat in the ver

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九年级·英语·选择题问答/审问

---Could you look after my plants while I'm away on business,please? ---_____________.I'll water them on time.( )

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九年级·英语·选择题动词不定式,实义动词

---Why doesn't the surgeon stop ____________ lunch? ---Because he is too busy __________ a dying patient in the operation room.( )

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九年级·英语·选择题固定短语

--Could you tell me how to behave politely in public in the UK? --Yes.__________,you should keep your voice down and always queue.( )

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九年级·英语·选择题情态动词

---Will Dad be back home at 6 o'clock this evening? ---He should,but he __________ not.Sometimes he exercises after work.( )

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九年级·英语·选择题固定短语

A children should be encouraged to tell the truth instead of __________ stories whenever he or she has done something wrong.( )

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九年级·英语·选择题从属连词

My mother won't allow my father to drive __________ he promises to give up drinking.( )

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九年级·英语·选择题one的用法,it的特殊用法

---How nice your dictionary is! Where did you get_____________? I'd like to buy _____________,too. ---In the shop in the city center.( )

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九年级·英语·选择题时间

---______________ is it since you left your primary school? ---Three years.( )

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九年级·英语·单词拼写-单句必备词汇,不可数名词

People all over the world hope for ______(和平).

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九年级·英语·阅读理解直接理解,标题判断,故事与诗歌,童话,细节排序

"Well, I'll eat the cake," Alice said. "If I get taller, I can reach the key on the table. And if get Smaller, I can go under the door into the garden."Then she fished the cake very soon. "I shall be as tall as a house i

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