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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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七年级·英语·单词拼写/单词释义Unit 1 I always like birthday parties.

Tom has a______（幸福的） family.

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七年级·英语·填空题Unit 1 I always like birthday parties.

Jack is______[ˈnevə（r）] late for school.

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七年级·英语·阅读理解Unit 3 Language in use.

阅读理解 Today is Sunday.It's seven o'clock in the evening now.Jack's family are busy. Jack is in his room.There are some clothes on his bed.He is looking for his blue Tshirt.At eight，he will(将)have dinner with his friends

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七年级·英语·填空题Unit 3 Language in use.

It's Sunday today.There're many _____ in the park.Some are walking.Some are _____ tea.Others are watching flowers.Look！That is Lucy.She's flying a kite(放风筝)with her _____ Tom.The kite is high in the sky now.Their parents

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七年级·英语·填空题Unit 3 Language in use.

阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空白处填入一个适当的词或使用括号中词语的正确形式填空。 I've got some nice 【 1 】 (photo) ． Now let 【 2 】 (I)show them to you. Please look 【 3 】 the first photo.It's half past eight in the morning.The students are 【 4 】 (

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七年级·英语·连词成句Unit 3 Language in use.

根据图片及括号中所给的短语提示，用现在进行时描述图片，每幅图片写两句话【1】 (plant trees，not plant flowers) ______________________________________________ 【2】 (have dinner，not have breakfast) ______________________________________________ 【3】 (send flowers

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七年级·英语·句型转换Unit 3 Language in use.

按要求完成句子【1】—Are they looking at maps？(作否定回答) —No，__ __. 【2】My mother lies in the bed.(用at the moment 改写句子) My mother __ __ in the bed at the moment. 【3】I watch TV every night.(用now改写句子) I __ __ TV __. 【4】We are having a

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七年级·英语·单词拼写Unit 3 Language in use.

根据句意及汉语提示完成单词【1】Jenny is __ (享受)the picture now. 【2】They want to have lunch in the __ (餐馆)today. 【3】Stay here for a __ (片刻)．I'll be back soon. 【4】Mr Wang is tired，but he is __ (仍然)working there. 【5】Who is __ (开车送)these

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八年级·英语·单词拼写Topic 2 How can we protect ourselves from the earthquake?

(B)根据句意及汉语提示填空。【1】He sets an _______ (榜样) to the other students. 【2】They could learn English well in such a bad _______ (情况). 【3】Robots can _______ (修理) machines easily. 【4】I am quite sleepy. Don’t _______ (叫醒) me up un

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八年级·英语·单词拼写Topic 2 How can we protect ourselves from the earthquake?

(A)根据句意及首字母提示补全单词。【1】She began to draw on the paper, after a while, a beautiful cat a_______. 【2】She looks like Maria, so I often m_______ her for Maria. 【3】Edison was a great i_______. He invented many useful things. 【

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八年级·英语·阅读理解Topic 2 How can we protect ourselves from the earthquake?

How to Look After a Computer? Many young people use computers, but few of them know how to look after them. Remember the following when you use your computer. Keep your computer in a cool, dry room. 【 1 】 Moisture( 潮湿 )

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八年级·英语·阅读理解Topic 2 How can we protect ourselves from the earthquake?

Many people are interested in UFOs and there are a lot of reports about them. One report of UFOs came from a British plane on its way from New York to London in 1954.The British plane was flying over an island at 19,000

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八年级·英语·阅读理解Topic 2 How can we protect ourselves from the earthquake?

The Internet has become part of teenagers’(十几岁的) life. A new report on 3,375 students aged from 10 to 18 in seven Chinese cities found that 38 percent of them believe they use the Internet often. While most of them get u

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八年级·英语·填空题Topic 2 How can we protect ourselves from the earthquake?

We live in the“computer age”. Long ago computers couldn’t do ______. They were very big and ______. They used a lot of energy(能量). Only a few people were ______ in them. Today computers are ______ and cheaper. They can _

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八年级·英语·补全对话Topic 2 How can we protect ourselves from the earthquake?

选择方框中的句子完成对话，其中有两项多余。 Kangkang:Hi, Michael. How often do you use the Internet? Michael: Very often. 【 1 】 Kangkang:I never use the Internet. 【 2 】 Michael: A lot of things. I often listen to music. 【 3 】 Kangkang:Are you

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八年级·英语·选择题Topic 2 How can we protect ourselves from the earthquake?

I think robots can _______ humans in some places.

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九年级·英语·填空题Unit 1 Wise men in history

We have______（little）rain this year than usual．

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九年级·英语·填空题Unit 1 Wise men in history

Have you done it？ Tell me the______（true）．

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九年级·英语·填空题Unit 1 Wise men in history

She wore a______（gold）necklace．