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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·书面表达提示作文,学习,写作
高尔基说："书籍是人类进步的阶梯. "为了激发同学们的阅读兴趣，请你以"我读书，我受益"为主题，根据下列要点提示， 内容提示： 1. feel the beauty of the words 2. open your eyes 3. increase your knowledge 4. develop a good reading habit 5. enjoy the happiness 要求： 1. 不能出现真实的校名、人名等相关信息
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九年级·英语·书面表达提示作文,学习,写作
阅读下面短文，根据所给情节进行续写，使之构成一个完整的语篇． 注意： 1．所续写短文的词数应为40-50词； 2．必须至少使用2个短文中划线的关键词语； 3．续写部分至少一段，第一段开头语已经为你写好； 4．续写完成后，请用下划线标出你所选用的关键词语。 Because of COVID-19（新冠病毒）, students had to study online at home for a long time. Compared wi
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九年级·英语·任务型阅读-多任务混合科普知识与现代技术,事物说明、介绍
Space vegetables are grown from seeds（种子）. They have been taken to and brought back from outer space. The seeds are influenced by the radiation（辐射）and low gravity（重力）in outer space. When they are brought back to the eart
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九年级·英语·解答题直接理解,语意转化,个人故事,个人情况
Li Shizhen was one of the most famous doctors in Chinese history, He was born in Hubei in 1518. Both of Li Shizhen's father and grandfather were doctors. Li Shizhen's grandfather was a country doctor who traveled in the
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九年级·英语·任务型阅读-完成表格动物与植物,事物说明、介绍
Fish live in water. They use their special organ（器官） called gills（腮） for breathing. Some fish are dangerous to humans. Here are the world's most dangerous fishes. Electric Eel（电鳗） - It is a South American fish. Electric
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九年级·英语·任务型阅读-完成表格环境保护,现象说明、介绍
Rethink, Reuse, Recycle! Do you often throw away things you don't need anymore? Have you ever thought about how these things can actually be put to good use? Nothing is a waste if you have a creative mind. You have proba
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九年级·英语·填空题from表示地点/动向的用法,固定短语,基数词的用法,可数名词的单复数,表示递进或顺承关系的连词,现象说明、介绍,卫生与健康,一般过去时表示过去发生的动作或存在的状态,程度副词,other的用法
from, music, hundred, alone, control, especially, close, other, and, out The novel coronavirus (新型冠状病毒） began to spread in Wuhan in the last month of 2019. (1) it has continued to spread. The Chinese government (2) off f
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九年级·英语·补全对话感激,位置,购物,意愿和打算,请求与提供帮助,购物
A: Welcome to Friendship Store. (1) ？ B: I'd like to buy a smart TV． A: Well, we have many different kinds of smart TVs here. You can have a look first. B: This one looks very nice. (2) ？ A: It's made in China. You know
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九年级·英语·其他个人故事,个人情况
Kobe Bryant, one of the greatest basketball players of all time, died in a helicopter (直升飞机） crash (坠毁） with his daughter on Sunday. (1) . Mr. Bryant's death has caused great sadness. (2) Some NBA players held onto the b
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九年级·英语·阅读理解直接理解,标题判断,个人故事,词义猜测,逻辑推理,家庭生活
What surprises us most? It is that there are still couples who keep doing things to show each other love. A Japanese farmer is famous for his act of love. He has spent nearly two years planting flowers for his blind wife
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九年级·英语·阅读理解直接理解,动物与植物,词义猜测,现象说明、介绍,正误判断
A man named Randy in Canada liked to hunt for trees. He looked for big trees and old trees in Canada. He made maps to show where these trees were. He did not want to cut them down. Actually he wanted people to take care
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九年级·英语·阅读理解直接理解,数字计算,语意转化,旅游,广告
Golden China Golden 01 15-Day Tour of Beijing - Xi'an - Baoji - Chengdu - Kunming ￥3,399 each person Golden 02 7-Day Tour of Beijing - Jinan - Nanjing - Shanghai ￥1,699 each person Golden 03 9-Day Tour of Beijing - Xi'an
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九年级·英语·填空题名词辨析,代词辨析,固定短语辨析,必备词汇,动词辨析,动词短语辨析,童话,副词辨析,从属连词辨析,形容词词义辨析,介词辨析,固定短语,how引导的感叹句,故事与诗歌,固定句型,when引导时间状语从句
There was once a farmer. He had a very big rabbit and a smart dog. One day, he organized a(n) (1) between his dog and his rabbit. He made a hole in one of his biggest fields, and (2) a carrot and a bone（骨头）in it. He want
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九年级·英语·选择题常识,警告和禁止
You can NOT see ______ in a history museum.
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九年级·英语·选择题连接副词where引导宾语从句
—Wow, your dress is so beautiful. Could you tell me ______? —Oh, I bought it in an online store.
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九年级·英语·选择题祝贺与祝愿
—I'm going to visit Chengdu this summer holiday. —Great! ______!
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九年级·英语·选择题固定短语
---Bob, you have to finish your school project today. ---Don't worry, mum. I won't ________ today's work till tomorrow.（ ）
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九年级·英语·选择题副词比较级的修饰语,固定句型
---You have made great progress on your study. ---Thank you. I believe ________ you work, the better grades you will get.（ ）
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九年级·英语·阅读理解历史与社会
What are the cultural differences between China and the West？You might be able to find the answer in Cao Siyu's comics （漫画）. Cao,32，was born in Beijing,but left home at 20 and has studied and lived in the US，the UK，and F
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九年级·英语·阅读理解专题报道
Asked about the foods that sell best in the whole world,do you often hear about Coca-Cola and McDonald's Big Macs from America？But think again,because the most successful worldwide food is instant noodles （方便面）. A new bo
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