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。
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
#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
阅读下面短文,从短文后所给的A、B、C三个选项中选出能填入相应空白处的最佳选项。 Nowadays, Wechat is becoming more and more (1) in China. No matter where we are, we can send text or voice messages to our friends. We can also find a stranger to talk to by shaki
查看题目详情 →
John, David and James were three brothers. Every year on their mother's birthday, they sent her expensive present. They liked to show how rich they were. The eldest brother, John, decided to give his mother a perfect pre
查看题目详情 →
Scientists say that students usually need eight to ten hours' sleep per night. But most Chinese students do not get (1) sleep. Some Chinese parents are usually (2) to see their children studying late. They will think the
查看题目详情 →
Mrs. Brown was an old woman. She lived on a small farm. One day she went into the post office near her small farm. She wanted to write a letter to a friend of hers. But she could not read and write, so she asked a young
查看题目详情 →
dangerous careful fun home safe interest Our earth is in ______ because the air pollution is more and more serious. You must take ______ of your pet dog. It's ______ to look after some baby animals. Don't you think so? I
查看题目详情 →
Dogs also helped people hunt animals for food. ( 对划线部分提问) ____________dogs also______people______?
查看题目详情 →
Let's go out for a walk.(改为反义疑问句) Let's go out for a walk,____________?
查看题目详情 →
It is very exciting for me to travel to the USA..(改为感叹句) ____________ it is for me to travel to the USA!
查看题目详情 →
Liuxiang is my favourite sports player. (保持句意相同) I______ Liuxiang______.
查看题目详情 →
- What did he do after he paid his _____________ for the newspapers? - He sat down by the window and read his newspapers.( )
查看题目详情 →
A _____________ refers to a short piece of writing to help you remember something.( )
查看题目详情 →
To _______________ something means to calculate the total number of something.( )
查看题目详情 →
- The task is very difficult for us. -Don't be worried. I'm sure we will finish it successfully at last . ( )
查看题目详情 →
- What are the police doing? -They are looking for some men who robbed (抢劫) a bank.( )
查看题目详情 →
- Why didn't you buy the big house? -Because we can't afford it. It's very expensive.( )
查看题目详情 →
-Ali reached into his pocket and drew a piece of paper from it. -What was written on it?( )
查看题目详情 →
- What can I buy for her as a birthday present ? -How about a storybook? She likes reading storybooks very much. ( )
查看题目详情 →
Choose the best answers. John, David and James were three brothers. Every year on their mother's birthday, they sent her expensive presents. They liked to show her how rich they were. The oldest brother , John, decided t
查看题目详情 →
Choose the best answer.(根据短文内容.选择最恰当的答案) Hi! My name is Robert and I live in Chicago. My school is called Parkside Elementary. It is Jake and Elizabeth's school too. Michael and Trevor's school is called Lincoln Middle S
查看题目详情 →
Choose the best words or phrases and complete the passage.(选择最恰当的单词或短语完成短文) The first day of school, our professor introduced an old lady Rose to us. "Why are you in college (1) such an age'?" I asked her. She replied, "
查看题目详情 →
题库使用说明
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。
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。
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。