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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
Tom likes playing____football very much.
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I have a pen friend.She is(1)______Australia.Her name is Alice.She can speak English and a little(2)______(Japan).She wants(3)______(learn)Chinese because she thinks it\’s very(4)______(interest). She lives in Sydney.She
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We should ______(尊重)old people.
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This book ______(描述)a different world.It is very interesting.
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1 always share my ______(想法)with my friend Li Hua.
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We shouldn\’t tell lies. ______(诚实)is a traditional virtue(传统美德)of China.
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Young people nowadays care much about their ______(外貌).
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Qi Haoran,a Junior One student at High School Attached to Harbin Institute of Technology,was quite busy last winter vacation-and not just with his homework.Qi,together with 10 other classmates,made a volunteer group to c
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Dear Mrs.Smith, Long time no see.How are you?I live with my parents in China now.We are in a beautiful city—Shenzhen.And I have a new sister.She is one year old.Her name is Gina White.We all love her very much.We have a
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Do you mind______me?I have some problems.( )
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We should have_______when we teach young children.( )
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If you don\’t tell the truth,you may lose their_______.( )
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You can__________me to help if you meet difficult problems.( )
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假设你是Daniel,你校正在开展"班级达人"的推选活动你想向李老师推荐你的同学Millie参选,请根据以下信息,介绍Millie的基本情况. 外貌 高而苗条、圆脸马尾辫,可爱甜美 个性 1.诚信礼貌、严守秘密2.关心同学朋友、学习勤奋 爱好 1.参观名胜、了解各地文化2.(请自拟一点内容) 愿望 1.在一个理想的校园里学习2.长大做社会工作者. Dear Mr.Li, I am writing to recommend my clas
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我们将有三天的假期,所以我们计划一次去上海的旅行. We plan to ______ to Shanghai as we\’ll ______.
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王老师经常耐心倾听我的问题并向我提供帮助. Mr.Wang often ______ and ______.
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Jack说别人的坏话,非常不礼貌. It\’s ______ Jack ______ others.
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读一本好书要比看电视有趣多了. ______ is ______ watching TV.
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那个社会工作者很有幽默感. That ______ has ______.
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选词填空 请认真阅读下面短文,从方框中选择适当的单词,将其正确形式填入答题卡标有题号的横线上.每个单词仅用一次. easy problem get noise high Nature is wonderful.It is our best teacher.It teaches us a lot and we are born to learn from it to solve (1)______.For example,scientis
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