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#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·填空题史地常识类阅读

Lanzhou beef noodles come from the capital of Gansu province in Northwest China. It not only has a rich history and culture,but also is a dish that has won wide attention home and abroad.Changing from a common bowl of no

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九年级·英语·填空题史地常识类阅读

A tree has roots.People have roots,too.If you get to the root of a problem,you will solve it.It\’s the same thing with words.Dig deeply into a big,unfamiliar (不熟悉的) word and you will understand where it came from. Prefix

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九年级·英语·选择题时态辨析

-Could you tell me when Mr.Li in Huanggang? -Sure.When he ,I'll call you.( )

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九年级·英语·填空题首字母阅读填空

根据短文意思和所给首字母,写出一个完整正确的单词. In early human history,people found that the changes of"light and darkness"seemed to (61)h again and again.The sun rises in the east,(62)p light and heat and goes down in the west,causing darkne

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九年级·英语·填空题首字母阅读填空

Dear Lucy, In your last letter,you told me that you have no time to play with your friends because your parents are too(81)s with you.And they have (82)m rules for you at home.I'm sorry to hear that.And here are my(83)s

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九年级·英语·填空题阅读排序

There are lots of dangerous and terrible insects in northeastern India,but the tree-bees are the most terrible.They are killers.Unlike most bees which will sting(叮咬)you only if they are disturbed (打扰),tree-bees will atta

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九年级·英语·填空题史地常识类阅读

①Everyone knows that Spain is home to some crazy festivals.From throwing tomatoes at one another to burning dolls made of cardboard,wood or plastic,the Spanish festivals are quite amazing.You may not have heard of the Ha

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九年级·英语·填空题感叹句

Once,there was a bus driver in a small village.His job was to take children to school in his red bus.(1)______,he would stop at the village center to pick up the children.Then he would drive them to a nearby village a fe

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九年级·英语·选择题过去完成时的被动语态

By the time the fireman arrived there,the big fire______.( )

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九年级·英语·选择题一般现在时的被动语态

(2023·福州模拟) Gu Ailing ____ in both China and many other countries because of her amazing skiing skills.

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九年级·英语·填空题首字母阅读填空

In most countries,people usually eat t(1) food on special holidays.A special day in the United States is T(2) .It is always on the f(3) Thursday in November,and is a t(4) to give thanks for food in the autumn.At this tim

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九年级·英语·填空题首字母阅读填空

Spring is the season between winter and summer when the weather becomes warmer and plants start to grow again.Spring is bringing more activities with natural views,and s(46) arranged events. In Tibet,in a wild peach fore

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九年级·英语·填空题语法填空

wonder,you,I,us,help,whether,can ______.

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九年级·英语·填空题阅读表达

Lee loved tennis.He got a few old tennis balls and an old racquet(球拍) from his grandfather,who used to play tennis a long time ago. Lee hoped that he would become an Olympics (1)______one day. However,there was one(2)___

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九年级·英语·填空题阅读表达

Language is important both because of what it communicates and how it does the communication.The power of language is so strong that it shows how language can actually influence(影响) the way we think.We can see this in ch

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九年级·英语·填空题配对阅读

A:Li Yue,I really worry about your trip to Beijing.So I still(1)______a tour around nearby cities.I wonder if you can change the plan. B:Come on,Mom.I know Chinese parents normally worry the first time their children tra

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九年级·英语·填空题逸闻趣事类阅读

An apology(道歉) means one person has realized that an action was wrong and hurtful.No matter what we are apologizing for, (A) if we hurt someone,then saying sorry is the first step .Learning how to apologize is an importa

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九年级·英语·填空题逸闻趣事类阅读

A farmer had some puppies(小狗) for sale,from 30 to 50.While he(1)______ (paint) an ad for the puppies,a little boy passed by and said, "Sir,they are so lovely.I want to buy one of your(2)______(dog)." "Well,"said the farm

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九年级·英语·选择题祈使句

-Let\’s go to the community if it tomorrow. -But nobody knows if it tomorrow.( )

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九年级·英语·选择题过去进行时的被动语态

The girl with two cats in the yard when the earthquake happened.( )

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