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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; \

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#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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七年级上·英语·填空题Unit 2 Daily Life

完形填空 When I was a little boy, my mother sold flowers in London. She couldn't (1) me at home, so I had to go with her. As I grew older, I began to (2) her and I really enjoyed it.Things changed (改变) when I was 14. My gran

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七年级上·英语·阅读理解Unit 1 Making Friends

阅读理解 Do you get enough sleep? With so much homework it's often difficult to get the rest you need. But you need to try, because sleep keeps you healthy and it stops you getting fat. Recently, a group of U. S. scientists

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七年级上·英语·阅读理解Unit 1 Making Friends

阅读理解 Different cultures have different ideas about why people catch colds. For example, in the United States, some people think that you can catch a cold if your feet get cold. So, mothers tell small children to wear war

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七年级上·英语·阅读理解Unit 1 Making Friends

阅读理解 Bob and Milly are chatting online. What are they talking about?"Hi, Nice to meet you!""Hello. Nice to meet you too! ""I'm a girl. My name is Milly Green.""I'm a boy. My name's Bob Brown. Would you please tell me som

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七年级上·英语·阅读理解Unit 1 Making Friends

阅读理解 Should friends be different or the same? Different people have different ideas. The following is what four of my classmates talk about their friends.My name is Susan. I am outgoing. I like to have friends who are si

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七年级上·英语·阅读理解Unit 1 Making Friends

阅读理解 Once there lived an old man in a town. He always forgot a lot of things. So his wife always had to say to him, "Don't forget this." One day he went on a long way alone. Before he left home, his wife said, "Now you h

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七年级上·英语·填空题Unit 1 Making Friends

完形填空 I'm a collector. My collection is (1) . Now, I have over one thousand. They are all about every part of (2) , such as, buildings, scenery, animals, plants and works of arts.My favorite is a cartoon picture named" Me

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七年级上·英语·填空题Unit 1 Making Friends

完形填空 One day, a young man went to a company. He wanted to find a (1) .Many people also wanted to work there.After a (2) quiz, only three men could go to see the boss. Then the boss of the company wanted to talk with them

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七年级上·英语·填空题Unit 3 Friends from other countries

Choose the best answer and complete the passage. Each nation has many good people who help to take care of others. For example, some high school and college (1) in the USA often spend many hours as volunteers(志愿者) in the

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七年级上·英语·填空题Unit 3 Friends from other countries

Choose the best answer and complete the passage. Hello, dear friends. I'll show you some places of interest. Our first stop is London! London has (1) nine million visitors every year. They come and visit some of (2) buil

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七年级上·英语·句型转换Unit 3 Friends from other countries

my school , to, Penfriends International, your name, has sent (连词成句)

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七年级上·英语·句型转换Unit 3 Friends from other countries

My penfriend is from Britain . (对划线部分提问) your penfriend's ?

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七年级上·英语·填空题Unit 3 Friends from other countries

Many are going to visit our school next week. (Australia)

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七年级上·英语·填空题Unit 3 Friends from other countries

His family in the estate for 8 years. (live)

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七年级上·英语·填空题Unit 3 Friends from other countries

of all, please let me introduce myself to you. (one)

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七年级上·英语·填空题Unit 3 Friends from other countries

Over 25, 500 live in Garden City nowadays. (Britain)

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七年级·英语·解答题Unit 2 Our animal friends

John, David and James were three brothers. Every year on their mother's birthday, they sent her expensive present. They liked to show how rich they were. The eldest brother, John, decided to give his mother a perfect pre

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七年级·英语·填空题Unit 2 Our animal friends

Scientists say that students usually need eight to ten hours' sleep per night. But most Chinese students do not get (1) sleep. Some Chinese parents are usually (2) to see their children studying late. They will think the

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七年级·英语·阅读理解Unit 2 Our animal friends

Mrs. Brown was an old woman. She lived on a small farm. One day she went into the post office near her small farm. She wanted to write a letter to a friend of hers. But she could not read and write, so she asked a young

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七年级·英语·单词拼写/单词释义Unit 2 Our animal friends

dangerous careful fun home safe interest Our earth is in ______ because the air pollution is more and more serious. You must take ______ of your pet dog. It's ______ to look after some baby animals. Don't you think so? I

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