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不限语文数学英语物理化学生物历史地理道法

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不限七年级八年级九年级

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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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八年级·英语·选择题不定式

My father smoking last year because it\’s bad for health.（）

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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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九年级·英语·选择题逸闻趣事类阅读

—Excuse me.What did the boy say just now? —Sorry,I didn\’t______what he said.I was listening to the teacher.（）

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九年级·英语·其他现在完成时的被动语态

We have written a poem to encourage the people in danger. (改成被动语态) A poem ________ ________ written to encourage the people in danger.

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九年级·英语·选择题一般现在时的被动语态

—______ free breakfasts ______ in all schools in China? —No, not yet. Only in the rural areas.

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九年级·英语·选择题一般现在时的被动语态

As China grows stronger and stronger, Chinese ________ in more and more schools out of our country.

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九年级·英语·选择题一般现在时的被动语态

—Jason, have you finished the article about school life？ —Not yet. I'm afraid I won't make it unless I____ another two hours.

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九年级·英语·选择题状语从句

She will have a holiday as soon as she _______ the work next week．（）

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八年级·英语·选择题状语从句

I don\’t know if Jack ______back today．If he____back,I\’ll call you．（）

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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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八年级·英语·填空题主谓一致

A:Luke,it\’s time for lunch. B:Yes,but I\’m not hungry at all,Leo（1）______ A:Really?I\’m hungry because I didn\’t have breakfast.I want to order a takeaway（外卖）online. B:（2）______ A:A hamburger and some fried chicken.I li

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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.

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七年级·英语·填空题祈使句

请保持你的房间整洁. Please ______ your room ______.