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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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阅读短文,下列问题 A Imagine the situation. You are driving alone in a desert or on a mountain. You have no idea where you are. You passed the last house two hours ago. Then your car breaks down. It is night and it is cold. You h
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根据表格内容,选择正确答案。 cooks Editors(编辑) Drivers English teachers People we need Be good at cooking; work at late night Be good at English; enjoy writing stories; know a lot about the world Be good at Driving; smart; careful Lov
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阅读短文,从每题所给的A、B、C和D四个选项中,选出最佳选项。 In most parts of the world, many students help their schools make less pollution. They join "environment clubs". In an environment club, people work together to make our environment clean.
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根据短文内容,选择正确答案。 In most parts of the world, many students help their schools make less pollution. They join “environment clubs”. In an environment club, people work together to make our environment clean. Here are some th
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阅读理解 Air pollution is one of the most serious problems for people nowadays. But some people in the US say that they have found a way to solve the problem. In manycities, hundreds of people ride bikes instead of (代替) taki
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was, with, just now, my, talking, I, mom ___________________ .
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photos, in, the, no, museum ___________________ .
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turn off, the, your, meeting, you, during, must, phone ___________________ .
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light, turn on, don't, the ___________________ .
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Once there was a young girl. She was 【 1 】 (ugly) than most of girls. Her parents passed away years ago. She always 【 2 】 (feel) sad and lonely. One day, w 【 3 】 she was walking through some grassland, she noticed a smal
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Take _____ your coat if you feel very hot.
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I have a _____ (humor) friend. He often makes me laugh.
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Please let your children keep away from _____ (knife). They are dangerous.
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用 since或for填空 (1)He has lived in Nanjing the year before last. (2)I've known him we were children. (3)Our teacher has studied Japanese three years. (4)She has been away from the city about ten years. (5)It's about ten ye
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阅读理解 Hundreds of years ago, a Roman army came north from England to make war on Scotland. The Scots, a brave people, loved their country very much. They fought hard to drive the enemy out of Scotland, but there were too
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阅读理解 Today there are policemen everywhere, but in 1700, London had no policemen at all. A few old men used to protect the city streets at night and they were not paid. About 300 years ago, London was starting to get bigg
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阅读理解 Take a look at our library! Our library is open to everyone and the library card is free. Book * Picture books for children * Information about the world * Books in 36 languages * All kinds of stories * Novels You c
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阅读理解 Long ago, there lived in Greece a learned man. He was so well-known for his good knowledge of almost everything that lots of people from all over the country came to learn from him. The great man taught his students
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阅读理解 A well—known poem by the Tang Dynasty's poet Du Mu tells a sad scene in early April, Rain falls heavily as Qingming comes, and passersby with low spirits go." This scene takes place on Tomb Sweeping Day, also known
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阅读理解 Calabash brothers(葫芦娃兄弟) live in the Calabash Mountain with their grandfather. They are all very brave. They wear different clothes. The red calabash is the other six brothers 'elder brother. He is powerful. His bod
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