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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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Judy gave us an _______ (introduce) about her when she joined our class.
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This book is considered the best work of _______ (her) so far.
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The news of the _______ (miss) girl is reported on TV.
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Have you made up your mind yet? Just tell me your _______ (decide).
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People are always trying to live a healthy life. You might have read so much on this topic. The following ideas may sound strange, but they can really help you. Exercise when you are tired. After a long and tiring day of
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Finally, he______(choose)the blue one.
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Little Tom quickly______(hide)himself behind the door when he heard his mother's voice.
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In the end, a girl from Class 12 became the______(win)of the competition.
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Who will give a______(speak)next week?
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My sister suggested______(go)to the beach this weekend.
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Miss Li advised them______(stop)smoking because it is bad for their health.
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Many Chinese students think it's not necessary (1) (pay)attention to their spoken English. Here is a story to show you how (2) (importance) it is to speak English in daily life. Once a man got hungry and went into a rest
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The first English week at our school started on May 4th, 2012.The whole school was filled with an English learning atmosphere. A series of activities was held. There were handwriting activities, story writing, English so
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Autumn in Tibet is very beautiful because there are many fresh and bright colors everywhere. In northTibet,one can travel several hundred kilometres by car and can not see even a person.No one can be found in the north o
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A farmer loses his watch in the barn.He is worried because the watch has many stories for him. After looking carefully everywhere for a long time,he can't find it.Then he asks for help of a few children playing outside t
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There is a greed crocodile.He feels really hungry and he wants something to eat.Suddenly,he sees a little boy.The boy has some meat in his hand.The crocodile wants to eat both the boy and his meat. The crocodile says to
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There are four seasons in a year:spring,summer,autumn and winter.Each season lasts three (1) . Spring is the first season of the year.In northern part of the Earth,the spring months are March,April and May.In spring,the
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What's my favorite stamp?That's easy --- (1) stamp the Nicaraguans made in 1900.It had a picture (2) Mount Momotombo on it.The artist (艺术家) wanted the stamp to look interesting,so he (3) (paint) the mountain with lots of
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The police in our city always do their best to _________ people,so people in our city are very safe.( )
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There is a _________ map on the wall and you can see where my hometown is clearly.( )
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