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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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The________ old man often walks in the garden_______.( )
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The doctor worked for ______ after twelve o'clock.( )
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你介意我问你几个问题吗 Do you______ a few questions?
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Julia是一个演员.她近些年出演了许多电影. Julia______.She acts in many movies these years.
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如果你需要帮助,你可以找警察 If you need help, you can______.
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我怀疑这个报告的真实性. I doubt______
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你在这个时候放弃是不明智的. It's not______ at this moment.
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我父亲会说一点英语. My father can______English.
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这是一个小房子,但是至少有一个花园. This is a small house but______there is a garden.
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一小时内完成这项工作是不可能的. ______ the work within an hour.
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is, what, word, a, special, it _______________________________________ !
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buying, Mr. Smith, a, considers, car _______________________________________ .
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paper, I, with, this, fill, box, can _______________________________________ ?
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is made up of, housework, work, house, and _______________________________________ .
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Miss Lucas lived in South Carolina and liked trying new things. Her father 【 1 】 (send) her some seeds of the indigo plants ( 靛蓝植物 ). She planted some of them i 【 2 】 February, but the indigo plants all died because of t
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Gardening is popular in many parts of the world. It brings us sweet smelling flowers, fresh fruit and vegetables. But you can get more from your garden. Gardening helps to keep healthy. Today's people sit indoors for too
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My family moved into this house nine years ago and we called the area in front of our house “rock garden” as it was full of rocks. Last summer, I found a tiny little plant in the _____ but I didn't know its name. I _____
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Have you ever eaten a dandelion( 蒲公英 )? Me neither. Have you ever blown it to make a wish? Me, too. “Time to pick dandelions, Athena.” Mum opened the car door and I entered with a _____ . My hometown is in Greece( 希腊 ),
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With spring coming, everything 【 1 】 (begin) to come to life. The grass is green and the flowers b 【 2 】 . The animals come out of the 【 3 】 (hole). It is time to go out to enjoy the beautiful nature. Some like to fly ki
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(2020 原创 )Heilongjiang Province is in the n ________ of China.
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