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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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七年级·英语·填空题逸闻趣事类阅读

The Lion and the Mouse A mouse ran across the face of a sleeping lion and woke him up.The lion was very angry.He put out his paw and caught the mouse. "You woke me up,"he said."I will now eat you." "Please don\’t,"the mo

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七年级·英语·选择题表语从句

I find my lost dog.It\’s very kind ________ you to help me!（）

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七年级·英语·选择题主谓一致

A pair of socks______on the bed.（）

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七年级·英语·填空题主谓一致

句子填空用be动词（am,is,are）的适当形式填空. How ______ you?

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七年级·英语·填空题主谓一致

His book is under the bed.（改为一般疑问句） ____________ book under the bed?

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七年级·英语·选择题时态辨析

-Where is Jack? -In the sitting room．He _______ TV with his brother．（）

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七年级·英语·选择题时态辨析

—Jack ,you look more handsome in your new shirt today . —Oh,really ?I _____ it in a cheap store with my mom.（）

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七年级·英语·填空题阅读判断题

Do you go to school by bus?It is very important for you to know how to be safe（安全） when taking a bus.Here is some advice. ★Do not run to the bus stop,but walk.When you are at the bus stop,you should wait（等待） in the safe

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七年级·英语·填空题阅读判断题

They have an English test on December 24th. （对画线部分提问） ____________they have an English test?

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七年级·英语·填空题时态辨析

Alice likes doing housework.She ______（clean） her room every afternoon.

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七年级·英语·填空题阅读判断题

There are many ______/\’neɪbəhʊd/ centres in big cities in China.

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七年级·英语·填空题逸闻趣事类阅读

A.because B.waited C.arrived at D.enjoy E.rain F.heavy We had a terrible school trip last weekend.Some students were late.Then we（1）______for half an hour for the school bus,but it didn\’t arrive. Finally,our teacher too

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七年级·英语·填空题逸闻趣事类阅读

Austin wanted to play the guitar.His friend Devin first gave him the （1）______ and Austin thought it was a great one.He wanted to be in a （2）______ club one day,but first he had to learn to play.So he bought an old guita

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七年级·英语·填空题主谓一致

I have many friends,and they have different favourite （1）______. John\’s favourite subject is computer （2）______he thinks the computer can help him a lot in his study.He is a （3）______fan（迷）.He likes watching English mov

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七年级·英语·选择题主谓一致

— What time is it? — It\’s 7:00.It\’s time .（）

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七年级·英语·选择题不定式

Frank would like this weekend.（）

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七年级·英语·填空题阅读判断题

Remember not to r ______around or throw things outside while you are on the bus.

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七年级·英语·填空题主谓一致

There ______（be） a pair of shoes on the floor.