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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|}=

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九年级·英语·选择题固定短语

It was getting too dark.Lisa didn't arrive home.Her parents were________her safety.（）

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九年级·英语·选择题名词辨析

The girl didn't have enough ________ to tell the teacher the truth,but her parents encouraged her not to tell lies.（）

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九年级·英语·选择题动名词的复合结构,必备词汇

Tom has much difficulty the article so he often asks me help．（）

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九年级·英语·选择题过去完成时,实义动词

-- You didn't watch the movie？ -- Yes, but by the time I to the cinema, the movie for several minutes.（）

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九年级·英语·选择题固定短语

---Shall we call for a taxi？ ---OK.Let me ________the phone number in Yellow Pages.（）

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九年级·英语·选择题不定代词

-Which of these two English books will you borrow？ -I'll borrow of them.Because they are very interesting.（）

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九年级·英语·选择题固定短语

Anna is preparing for the coming exam, so she has to____the invitation to the party.（）

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九年级·英语·选择题动词辨析

-Oh， dear! I can't find my key to the office． -Don't worry． I think you might ________ it in your car．（）

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九年级·英语·选择题不定冠词

---Sam,here is _________news report for you. ---I hope it can be ________useful information for my graduation paper.（）

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九年级·英语·填空题定语

Did you know that tea, the most popular drink in the world (after water), was invented by accident? Many people believe that tea was (1) (one) drunk about 5,000 years ago. It is said that a Chinese ruler called Shen Nong

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九年级·英语·选择题定语

The summer holiday is coming. We are going to have ________ holiday.

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九年级·英语·选择题并列复合句

Take care when you are travelling, ________ your things may get ________.

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九年级·英语·选择题并列复合句

________ he used to be 200 kilos in the past, he has lost too much weight by exercising now.

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九年级·英语·翻译题并列复合句

用括号内所给的词或短语，将下列句子译成英语。【1】与往年相比，我们收到了更多的照片！(compared) __________________________________________________________________________ 【2】谈论我们不能做的事情是没用的。(no use) ________________________________________________________________

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九年级·英语·选择题谚语

——My friend has achieved his goal after years of hard work. ——Great! ________.

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九年级·英语·选择题谚语

We can't afford to make any mistakes. To us, __________.

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九年级·英语·选择题谚语

一I can't believe you have finished the work. 一 My friends helped me out. Just as the saying goes,”__________.”

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九年级·英语·选择题谚语

——All the people of Huai'an need to work together to make our city more beautiful.——That's it . __________.