按真实条件找题
可以组合年级、学科、难度、题型和知识点搜索；筛选结果页不单独参与索引，避免重复页面分散权重。
初中免费试题库，先看题再决定怎么练
游客可浏览题目与选项；登录后可免费组卷并下载学生卷。答案解析、练习判分和错题本由 VIP 解锁。
高频错题
近期常错题排行
#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
全部题目
九年级·英语·choice表选择关系的连词
17． We must get up at 7:00 tomorrow morning, ____ we'll be late for the train.
查看题目详情 →
九年级·英语·choice短语辨析；及物动词+副词
16． Don't ____ rubbish everywhere. It's everyone's duty to protect the environment.
查看题目详情 →
九年级·英语·choice反意疑问句
15． —The old man never feels lonely, ____? —No, because he has many friends.
查看题目详情 →
九年级·英语·choice表达道歉；正式用语；征求（同意）
14． —Could you please sweep the floor, Daming? —____ I'm busy cooking.
查看题目详情 →
九年级·英语·choicethe+形容词最高级+表示范围的短语或从句
13． Li Lei is the ____ of the three boys. He always helps us.
查看题目详情 →
九年级·英语·choice表并列关系的连词；or / either...or…/ not only...but also等连接两个主语时
12． ____ Jake ____ his mother likes pop songs, and they often sing together.
查看题目详情 →
九年级·英语·choice宾格人称代词；固定搭配；宾语
11． He found ____ very interesting to visit Harbin in winter.
查看题目详情 →
九年级·英语·choicewhat引导的感叹句；What+形容词+不可数名词+其他!
10． —Li Lei won the first place. ____ good news it is! —Yes, we're all happy for him.
查看题目详情 →
九年级·英语·choice不定代词a few / few / a little / little
9． Tom has been in Shanghai for five years, so he can speak ____ Chinese.
查看题目详情 →
九年级·英语·choice介词短语；表示状态、变化等的连系动词
8． —The book is worth reading. How long may I ____ it? —____ a week.
查看题目详情 →
九年级·英语·choicewhat引导的宾语从句
7． With the development of the technology, nobody knows ____ the world will be like.
查看题目详情 →
九年级·英语·choice一般疑问句；need的用法
6． —Must I answer this question in English? —No, you ____.
查看题目详情 →
九年级·英语·choice数学词的表达；动词不定式
5． Two ____ dollars is enough to buy the bike, but I can't afford ____ it.
查看题目详情 →
九年级·英语·choicegone to/been to用法比较
4． —Lucy, where is Mr. Wang? —Hе ____ Beijing to attend a meeting.
查看题目详情 →
九年级·英语·choice过去进行时
3． While we ____ an English song, some visitors came into our classroom.
查看题目详情 →
九年级·英语·choice固定搭配；叙述（表语）形容词
2． It makes me ____ to watch National Women's Volleyball Team's matches.
查看题目详情 →
九年级·英语·choice表示数量“一”
1． —Shenzhou-18 with three astronauts was sent up on April 25th, 2024. It's such ____ exciting event. —Yes. And the astronauts are our heroes. I want to be ____ useful person like them.
查看题目详情 →
九年级·英语·填空题单词拼写;可数名词<br/>
（2023九上·开学考）What (种类) of coffee would you like?
查看题目详情 →
九年级·英语·填空题单词拼写;动词不定式<br/>
（2023九上·开学考）We want to do something to (救助) the wild animals.
查看题目详情 →
九年级·英语·填空题单词拼写;可数名词<br/>
（2023九上·开学考）It is a good (地方) for swimming.
查看题目详情 →
题库使用说明
从一道题开始，形成可复盘的练习记录
题目公开，学习闭环由 VIP 解锁
题干与选项可直接浏览；答案解析、判分、错题本和针对训练需要 VIP。
再转成专项训练
发现薄弱知识点后可继续组卷或练同类题，把一次搜索转成后续练习和错题复盘。