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高频错题
#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|}=
精选练习题目
in China, it, the, city, is, biggest ________________________________________________________________________ .
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problem, is, the, harder, I, than, imagine ________________________________________________________________________ .
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Jack, come, time, on, might ________________________________________________________________________ .
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China plans to build 3,200 km of new highspeed railways in 2019. It is expected that there will be the total length of more than 30,000 km. The 3,200 km of highspeed railways are part of the 6,800 km of new railways fo
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When I was 15, I said to my classmates that I wanted to be a writer one day. All the _____ laughed at me. One of them said, “Don't be silly. Only geniuses ( 天才 ) can become writers.” I was deeply hurt and I couldn't help
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Do you ride your bike to school? It's 【 1 】 (probable) a good idea because it's a good exercise. But in Europe and 【 2 】 US, not many kids go to school on their bicycles. They are usually 【 3 】 (take) to school in cars b
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(2020 原创 )My home is not far away from school. So I go to school ________ foot every day.
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(2020 原创 )I don't know the phone n ________ of John. So I can't get in touch with him.
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my, actor, is, uncle, an ________________________________________________________________________ .
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a, beautiful, she, girl, is ________________________________________________________________________ .
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can, Lucy, herself, little, dress ________________________________________________________________________ .
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Billy's favorite color was orange. But it was 【 1 】 (possible) for him to see what orange looked like. “Billy would n 【 2 】 be able to see. He is b 【 3 】 . ” the doctor said. Even so, with the hope, Billy learned about 【
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I really want to know what people usually do in their s ________ time.
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He is a s ________ boy. So I believe he can work out this problem.
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My h ________ is writing. So I practice it every day.
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He walked towards me ________ (slow) and looked unhappy.
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We all admit that dreams play a very important part in our life. They can influence every aspect of our life. Almost every great achievement has been the result of years of dreaming. If a person has a dream and holds fas
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One day, Mr. White told the class to get ready for a hobby show. All the 【 1 】 (student) spent the whole morning getting what they were going to show. All the students came back on time e 【 2 】 Bob, the laziest boy in hi
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(2020 原创 )There will be a c ________ of Jay Chou in Chengdu two days later. Can you help me buy one ticket?
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(2020 原创 )There will be all kinds of ________ (program) in the party this evening. I hope you can come and enjoy it.
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