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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|}=
精选练习题目
She's lived in Canada since she came here .(划线提问) ____________ has she lived in Canada?
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We didn't hear the strange voice any longer.(保持句意不变) We______ longer______ the strange voice.
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The teachers gave him a lot of advice.(改为被动语态) A lot of advice____________ to him by the teachers.
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This job requires your______ instead of hard work. (imagine)
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You should practice ________ English every day.
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I was born ________ April 6, 1980.
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I think Yao Ming, the famous basketball player, will be ________ new star in NBA.
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You'd better ________ memory by making a picture in your mind.
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I know the number to open the ________.
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Success is connected ________ hard work.
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Eddie tried many different jobs. ________ he became a milkman.
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They have ________ some money for the poor.
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________, we must get to school on time.
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What shall we do ________ it rains tomorrow?
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Her job is ________.
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Will you go to the Great Wall if it ________ tomorrow?
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I came into a village and I saw a policeman standing outside the post office and reading something carefully. He looked up at the car, w ______ into the road, and held up a hand to stop me. I a ______ stopped, but then I
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Choose the best answer (根据文章内容,选择最恰当的答案) Traditionally, the President is the highest-pad public employee. A salary of $ 400,000, along with other benefits, is paid to the President annually. But President Obama’s income
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Rewrite the following sentenced as required (根据所给要求,改写下列句子。每空格限填一词) 【 1 】 The boys and girls cleaned the room after the party. (改为一般疑问句) ________ the boys and girls ________ the room after the party? 【 2 】 Tony was readi
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Complete the sentenced with the given words in their proper forms(用括号中所给单词的适当形式完成下列句子) 【1】I like the mascot very much, especially ________ colour.(it) 【2】As a student, you should get more and more ________.(know) 【3】We m
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