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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
My best friend Michael is a 15yearold boy. He is one of my 【 1 】 (classmate). He works very 【 2 】 in all his lessons. He is always ready to help others. My math is very poor, so he often helps me 【 3 】 it after class.
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(2020 原创 )The boy is old e ________ to take care of himself. So don't worry.
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(2020 原创 )You got a ________ (good) grade in the math exam than I did. Could you tell me how you learned it?
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in, who, the, is, red, girl _________________________________________________________ ?
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北京之旅 Welcome to Beijing! I'm your guide. As we all know, Beijing is 【 1 】 city with a long history. There are many f 【 2 】 places of interest. On the first day, we are going to visit Tian'anmen Square, the Palace Museum
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There are lots ________ people on the square. Do you know what happened there?
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As a m ________ of the club, I want to do something for it.
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Beijing is the c ________ of our country. It is located in the north of China.
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Li Bai was a famous poet in the Tang dynasty, he wrote many p ________ during his life.
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What a ________ (love) girl Lucy is! Everyone likes her very much.
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He has a strong sense of ________ (direct). He never gets lost.
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You may think that English dictionaries have been used for many,many centuries. In fact,an English dictionary you _____ today wasn't made until the Qing Dynasty(清朝).Three men did most of the important _____ work on dicti
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将下列句子改为被动语态 【1】We call the boy Xiaoxiao. The boy ____ _______Xiaoxiao ______ _______. 【2】We speak only English in English class. Only English _______ ______ by us in English class. 【3】The man doesn't look after the flowe
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从括号中选择适当的单词填空 【1】—I haven't seen your grandfather for several years. Where has he gone? —Oh,he has ______(gone/been)to the US. 【2】The woman is afraid to _______(follow/be followed)by others. 【3】The rice ______(grows/is g
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根据句意及汉语提示完成单词 【1】I think Confucius is more a ____(思想家)than a writer. 【2】Our teacher asked us to write a review for the _____(讨论). 【3】People not only in China but also from many other countries are still ___ (影响)by Confuc
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—Many tourists ______ to the Great Wall every year. —Yes, that's true.
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The following four books are about ______ stories.
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—How clean and tidy your bedroom is! —Thank you. It ______ every day.
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用所给单词的适当形式填空,必要时可以加情态动词。 For any F1 driver , 【 1 】 ( win ) a world prize is a great honor (荣誉). But Sebastian Vettel did it three times! Sebastian 【 2 】 ( born ) in 1987 . He started karting at an early age . He had a ta
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Ⅲ.用所给单词的适当形式填空 【1】It's important for the children____________(make)friends with others. 【2】The 30th Olympic Games ____________(hold) in London in 2012. 【3】We are having a ______(discuss)about our future plan. 【4】______(c
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