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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
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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A. far from B. for lack of C. powerful D. economy E. specially Transportation Transportation means the movement of people and goods from one place to another. In history, the economy and power of a country are closely re
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A. transport B. spread C. wheels desire D. development E. tool We do not know when people invented wheels. But once it was invented, knowledge of the wheel ______ quickly across the world. It is easy to move things with
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________ interesting the film we saw last night is!
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The movie star is afraid that she will be recognized as she ________ at the airport.
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The couple ________ their new flat since the end of last month. They haven't finished yet.
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The sick boy _______ to hospital by the police yesterday.
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The man is too short to reach ________ the leaf ________ the flower in the tree.
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Come on! I have an interesting story ________ you.
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