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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
用方框中所给单词或短语的适当形式填空 hang out;catch;refuse;watch;prepare for 【1】My parents might __________to take me to the movie theater. 【2】She invites me ____________ the basketball match the day after tomorrow. 【3】Don't you want to__
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用括号中所给单词的适当形式填空 【1】—Can you____________(come)to my house for dinner? —I'd love to, but I have to ____________(help)my parents at home. 【2】Thank you for___________(ask)me to your birthday party. 【3】He is trying __________
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根据句意及首字母或汉语提示完成单词 【1】Thank you for i__________ us to your art festival. 【2】You are brave enough to __________(接受)such a difficult job. 【3】They c_________ the thief and tied his hands behind his back. 【4】He won't go back
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It was Christmas, and there was a big party in the house. Guests came and went,but the party went on. Then the bell rang. Several people shouted, “Come in!” A small man opened the front door and came in. Nobody knew him
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I'm very happy that I will be 16 years old in two days. I'm going to have a party _____ tomorrow evening. I told my mother that she needn't do _____ for me. This time I _____ to do everything by myself. I hope to _____ t
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Dear Lucy, Thank you for inviting me to your party. I'm sorry I can't come. I'm 【 1 】 (real)busy this weekend. On Saturday morning, I plan 【 2 】 (meet) my cousin Zhang Lan at the airport. In the afternoon I'm going to do
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用方框中所给短语的适当形式填空 another time;go to the doctor;too much; have the flu;prepare for 【1】Students don't like to have ___________ homework. 【2】The teacher asked his students _____________the exam. 【3】Sorry, my hands are full t
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Hello, I am Jenny. Let me tell you something (1) me and my brother John. Our parents are busy, so we need to clean our own rooms and our (2) (parent)room, too. You see, this is my room and that is his room. My room is ti
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---Excuse me,What's this in English? ---It′s ______eraser. (a)
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be,thing,at,it,need Mom:Hello. Tom:Hi,Mom.Could you bring some (1) to school for me? Mom:OK. Tom:I need my English books. Mom:English books?Where (2) your English books? Tom:Hmm, (3) are on the chair. Mom:OK. Tom:I also
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I am a student in Class 7.I can be your friend.My (1) name is David.My last name is Miller.Look!This is a photo of my family.This is my father.His favorite(最喜欢的) (2) is white.My favorite is white (3) .And this is my moth
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Pam is busy every day.She has two jobs and works six days a week.And she is a mother of two children.She drinks a lot of coffee.It helps her stay awake. After work,Pam cooks dinner for herself and her children.Then she a
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My mother doesn't like being common.While she's shopping she doesn't look at the common things at all.One day,she wears red jeans and a bright pink sweater for a party.I ask her,"Why do you dress like that?" "What's wron
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My name is Monifo.I am from America (美国) .Amy is my friend.She is Chinese.She lives here with her family.We are in the same grade.But we are not in the same class.She is very friendly and plays with me after class.And sh
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Tony is from New York. His father has a shop there. And his mother is a reporter. He's six years old now and begins to go to school this year. It's very near their shop and his father doesn't drive a car to take him to s
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根据短文内容,选择正确答案。 A serious earthquake can be a terrible experience, and it is easy to forget safety measures (措施) in disorder (混乱). Fortunately , most earthquake safety measures are common sense, but if you forget everythi
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根据短文内容,选择正确答案。 Different weather makes people feel different. It has an effect on health, intelligence(智力)and feelings. In August, it is very hot and wet in the southern part of the United Stated. People there have heart
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根据短文理解,完成下列各题。 Before the spring Festival, which is the most important festival in China, millions of passengers are struggling to make the once-a-year trip home. Because of a power failure caused by snow, more than 136
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完形填空 The earth is our home. We must take good care of it. Life today is easier than it was hundreds of years ago, but it has brought some new (1) . One of the biggest problem is pollution. We can see it, smell it, drink
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根据短文理解,从A、B、C三个选项中选择最佳答案填空。 I was flying to New York at night. Suddenly, a storm broke and the plane began to be tossed(颠簸)around. When I looked (1) the plane, I could see that nearly all the passengers were worried and
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