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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
We are thinking of taking __________ one-day trip to the mountains during the long holiday.
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告诉他不要再犯语法错误了。 Tell him not to ____________ in grammar.
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过去的几年我对象棋很着迷。 I am ____________chess in the past few years.
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UFO是什么的缩写? What does UFO____________ ?
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你最好把房子涂成白色。 You ____________paint the house white.
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Mo was born into a farming family in a village in Shandong province .He grew up listening to folk stories about gods,spirits foxes .Those stories later became the inspiration (灵感)for Mo's writing. Mo left school at the a
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DIY is very popular in China now.Yang Chen works for a computer business in Beijing.Though he enjoys his work,it is hard for him to relax(放松)after work. "For a long time,I had no choice(选择)except going to a bar for a dri
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Mo was born into a farming family in a village in Shandong province .He grew up listening to folk stories about gods,spirits foxes .Those stories later became the inspiration (灵感)for Mo's writing. Mo left school at the a
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DIY is very popular in China now.Yang Chen works for a computer business in Beijing.Though he enjoys his work,it is hard for him to relax(放松)after work. "For a long time,I had no choice(选择)except going to a bar for a dri
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The New Baby The picture shows a family visiting their new baby in hospital.I think it's probably the evening,because the light is (1) ,so the father must have brought his children (2) work. There are two children beside
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他们保守着他们之间的秘密。 They ______.
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乘公交车到那儿花费了我们两个小时。 It ______.
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夫子庙是南京最有名的名胜之一。 The Confucius Temple is ______.
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我们一进公园就迫不及待地拍照。 When we entered the park,we ______.
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To travel around the world is the dream of many adventurous people.But very few people can afford a global tour because hotels,food and airplane tickets are too expensive.Some people,however,have thought of some ways to
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—I'm afraid I won't pass the exam —Come on, Bill. You should believe in ______. That's the secret of success.
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Jane was shy.She would not invite her classmates______ speaking English.( )
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他们正在谈论他们的理想学校。 They are ______ about ______.
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我们有许多时间做课外活动。 We have ______for ______.
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这件外套和那件一样大,它们型号相同。 This coat is ______ that one.They are ______.
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