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#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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七年级下·语文·choice第02课 说和做 七年级语文下册课后培优练(部编版)

对下列句子修辞手法的判断错误的一项是( ) A. “人家说了也不一定做,我是做了也不一定说。”(引用) B. 他要给我们衰微的民族开一剂救济的文化药方。(借代) C. 闻一多先生,是卓越的学者,热情澎湃的优秀诗人,大勇的革命烈士。(排比) D. 他,是口的巨人。他,是行的高标。(对偶)

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七年级下·语文·choice第02课 说和做 七年级语文下册课后培优练(部编版)

结合语境对下列句子中划线词语的解释,有误的一项是( ) A. 一个又一个大的四方竹纸本子,写满了密密麻麻的小楷,如群蚁排衙。(群蚁排衙:这里指整齐地排列着) B. 十年艰辛,一部“校补”赫然而出。(校补:校对补充) C. 他潜心贯注,心会神凝 , 成了“何妨一下楼”的主人。(心会神凝:注意力集中,用心熟悉通晓) D. 他“说”了。说得真痛快,动人心,鼓壮志,气冲斗牛 , 声震天地!(气冲斗牛:形容气势之盛可以直冲云霄)

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七年级下·语文·choice第02课 说和做 七年级语文下册课后培优练(部编版)

下列句子中没有错别字的一项是( ) A. 闻一多先生,是卓越的学者,热情彭湃的诗人,大勇的革命烈士。 B. 他“做”了,在情况紧急的生死关头,他走到游行示威队伍的前头,昂首挺胸,长须飘飘。 C. 他在给我的信上说:“此身别无长处,即然有一颗心,有一张嘴,讲话定要讲个痛快!” D. 杜甫晚年,疏赖得“一月不梳头”。闻先生也总是头发零乱,他是无假及此的。饭,几乎忘记了吃,他贪的是精神食粮。

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七年级下·语文·choice第02课 说和做 七年级语文下册课后培优练(部编版)

下列划线字的注音完全正确的一项是( ) A. 浠水(xī) 弥高(mí) 独裁(cái) 气冲斗牛(dòu) B. 漂白(piǎo) 校补(xiào) 衙门(yá) 锲而不舍(qiè) C. 赫然(hè) 深宵(xiāo) 衰微(shuāi) 目不窥园(kuì) D. 硕果(shuò) 高标(biāo) 无暇(xiá) 迥乎不同(jiǒng)

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九年级·英语·信息匹配语篇范围

One day.I picked up my daughter Eloise from school and went to the supermarket for a few things. (1) so that I could get home earlier to prepare supper. I found a short line with just one person in front of me.It was an

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九年级·英语·阅读理解个人故事

Liu Jichen,a student from Tsinghua University,has developed a WeChat mini-program called"Clear Plate".After a meal,users can open the mini-program and take a picture of their empty plates.Once the picture is recognized b

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九年级·英语·阅读理解文娱与体育

In July,China introduced the "double reduction" policy.It hopes to reduce schoolwork burden(负担) on primary and junior high school students.The policy calls for reducing homework and after-school classes. According to the

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九年级·英语·阅读理解广告

April Hot SALE At Nobel Book Store! To celebrate our 30th birthday,we are having a big sale! Children's books Textbooks Picture books Story books 25% off 30% off 20%off 20% discount(折扣)on all adults' books! Amazing event

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九年级·英语·阅读理解个人故事

One day,a boy called Tom decided to give up his life.To this end,He went to the forest and had one last conversation with God. "God,can you give me a reason not to give up?" he asked. The god's answer surprised Tom: "loo

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九年级·英语·单词拼写/单词释义写作表达

这些照片让我想起了我的爷爷。 These photos ______my grandfather.

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九年级·英语·单词拼写/单词释义写作表达

猴王为什么不能把自己变成人? Why don't the Monkey King ______a man?

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九年级·英语·解答题篇章理解

Bill Gates is one of the world's richest men.He and his company,Microsoft,helped make computers cheap and popular.So what's he interested in now?Toilets. You might not think much about what happens after you use the toil

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九年级·英语·解答题篇章理解

More children in China are putting on weight.In 2018,16 percent of Chinese children and teenagers were overweight or obese (肥胖的),according to the National Health Commission. (A) .According to the World Health Organizatio

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九年级·英语·单词拼写/单词释义语篇范围

use express pair guest total like make spirit important spend name full In August 2018,a worldwide competition was started to create the mascots for the Beijing 2022 Winter Olympic and Paralympic Games.A(n) (1) of 5,816

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九年级·英语·信息匹配语篇范围

Children's life has changed a lot in the past few years.But do they have a happier childhood than we did? (1) I have four brothers and sisters,and my memories are all about being with them.We used to play board games in

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九年级·英语·阅读理解日常生活

Playing video games can be a fun way to spend time with friends.In some schools,teachers use games like Minecraft to encourage teamwork and communication. But for some players,gaming is an unhealthy habit.They stay up la

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九年级·英语·阅读理解广告

中国国家博物馆 NATIONAL MUSEUM OF CHINA You can book a free ticket in advance or get one on the day of visit.But if you see special exhibitions in the NMC,you should pay for the ticket.If you don't book a ticket,you can go to t

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九年级·英语·阅读理解卫生与健康

Recycle,reduce and reuse are three golden rules of environmental protection.Today we'd like to talk about the fourth rule:repair. In old days,when something broke,people sent them to repairmen.Nowadays,however,the idea o

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九年级·英语·填空题说明文

Sometimes it may be hard to tell others that you're feeling sad or worried.But if you keep these (1) in your heart and don't talk about them with others,you may fall ill at last!You can talk with someone who (2) a lot ab

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九年级·英语·补全对话英文要点

A: Hi, Rick. Zhou Ming invited us to have dinner with his family. B: Really? I'd love to go. (1) A: Sure. In China people put all the dishes on the table and they share the food. B: That's interesting. I know they usuall

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