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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·选择题一般现在时的被动语态
Today, more and more families ______ to take part in community service.
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九年级·英语·填空题阅读排序
A group of swans flew down to a beach where a crow（乌鸦） was jumping around．The crow watched them with disdain（鄙视）． "You have no flying skills at all!"he said to the swans．"All you can do is to move your wings．Can you turn
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九年级·英语·填空题阅读排序
Once upon a time，some visitors went to an island for a vacation，and each was having a good time．Suddenly a warning of a strong storm came to them，so all rushed to their boats．Yet，Love did not wish to run away quickly．The
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九年级·英语·填空题阅读排序
Mr．Jones，the owner of a farm，was one day driven out of the farm by all theanimals he kept．The animals were excited to be masters of their farm．Animalsmade seven rules of their own and Snowball painted them on the wall． 1
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九年级·英语·选择题语态的辨析
When you_______ something，you should_______"Thank you"．（ ）
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九年级·英语·选择题语态的辨析
The laptop _____ in Japan in 1985．It is used for studying．（ ）
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九年级·英语·选择题语态的辨析
---Do you know who ____ the tomb of Emperor Qin and who ___ the mobile phone？ ---No，but we may ask our teacher．（ ）
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九年级·英语·选择题状语从句
— Hurry up!we won\’t get to the airport on time ________we catch a "Didi" car. — I\’m coming.（ ）
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九年级·英语·选择题语态的辨析
My parents and I ________ to the party．（ ）
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九年级·英语·选择题一般现在时的被动语态
—I'd like some beef noodles,please. —Sorry,sir.Beef noodles only for breakfast.（ ）
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九年级·英语·选择题一般现在时的被动语态
--Every year, millions of plastic bottles away, polluting the land and waterways. --That's terrible. We should protect our environment.
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九年级·英语·选择题一般现在时的被动语态
Hainan Island ________ to be a good place for sightseeing today.（ ）
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九年级·英语·选择题不定式
______you have a chance to speak English,you should take it.（ ）
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九年级·英语·选择题主谓一致
- -Some juice, please． --Sorry, we______ any juice in our restaurant at the moment． How about some Cola?（ ）
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九年级·英语·填空题阅读判断题
Zhi Nong was born in a small town in Yunnan Province.When he was young,he moved to Kunming with his mother.Feeling like a caged bird in big city,he was bored with the busy and noisy city life and looked forward to nature
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九年级·英语·填空题阅读排序
阅读下面语段，请按照正确的逻辑顺序，将各语段重新排序． A．I'm really looking forward to it，It has taken me a long time to decide who should be invited，But at last I have written the invitations to thirteen of my friends． B．I've been promised a part
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九年级·英语·填空题阅读排序
Lance Armstrong，a world-famous cyclist，was already a professional athlete at the age of 16，taking part in courses of long distance swims，bike rides and runs． In his high school years，Lance decided to train cycling．Within
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九年级·英语·填空题阅读排序
第二节：阅读短文，根据其内容，选择最佳选项．（每小题2分，满分10分） “BANG!”the door caused a reverberation （回声）．It was just standing there，with father standing on one side，and I on the other side． We were both in great anger．“Never set foot in this hou
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九年级·英语·填空题祈使句
WeChat Pay has become an important part of our ______（每日的） lives.
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九年级·英语·选择题表语从句
My favorite subject is English ．（ ）
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