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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Unit 2 Get off the sofa!

Vincent got up at half past six in the morning. He hurriedly put on his clothes and finished the _________ prepared by Grandma. His grandparents were the only two people _________ with him. As soon as he waved goodbye to

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九年级·英语·填空题Unit 2 Knives and forks are used for most Western food.

在短文的空格内填入适当的词 , 使其内容通顺。每空格限填一词 , 首字母已给出。 Tony is Chinese American. His family members gather together and serve a traditional Chinese meal once a week. Last week Tony i 【 1 】 his friend Amy for it Tony’s family was prepa

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九年级·英语·阅读理解Unit 2 Knives and forks are used for most Western food.

A Bite of China Are you an eating-lover? Do you want to eat every delicious food in the world? Then do you watch the popular program A Bite of China? It’s a TV program on Chinese delicious food which has been produced by

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九年级·英语·填空题Unit 2 Knives and forks are used for most Western food.

It is important to have positive ( 积极的 ) feelings in our daily life. Compared _______ some unhappy people,those who are always pleased and relaxed are less likely to suffer from colds, _________ a new study. The research

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九年级·英语·阅读理解Unit 1 When is the school-leavers’ party?

判断文后句子的意思是否与短文内容相符。用“ T ”表示相符;用“ F ”表示不相符。 My biggest challenge is learning how to behave at the dinner table. As you can imagine, things are very different from the way they are at home. For example, you’re not supposed

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九年级·英语·任务型阅读Unit 1 When is the school-leavers’ party?

请阅读一篇有关 2019 亚洲文明对话大会之亚洲美食节广州站 (The Asian Cuisine Festival·Guangzhou) 的短文,根据所提供的信息,完成信息卡。 From May 16 to May 23 in 2019, the Asian Cuisine Festival·Guangzhou was held to encourage communication among Asian countries. Dur

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九年级·英语·阅读理解Unit 1 When is the school-leavers’ party?

Diabetes is caused by a group of metabolic disorders in which there are high blood sugar levels over a long period of time. There are three main types of diabetes: ·Type 1 Diabetes results from the body not having enough

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九年级·英语·填空题Unit 1 When is the school-leavers’ party?

If you often have a cold, headache, or backache, there is something wrong with your health. Eating healthy food ________ good for our health. Tofu, milk, vegetables are healthy for us. Tofu is a kind of common ________ f

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九年级·英语·填空题Unit 1 When is the school-leavers’ party?

根据短文内容 , 用方框中所给单词的正确形式填空 , 使短文通顺、完整。每词限用一次。 especial little cheap buy reason Takeout food is very popular in the world. More than 60 percent of the people in China order takeout food at 【 1 】 twice a week, according to a

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九年级·英语·补全对话Unit 1 When is the school-leavers’ party?

根据对话内容 , 从选项中选出最佳选项补全对话。 A:Would you like to come to my birthday party? B: 【 1 】 When is it? A: 【 2 】 B:What do you usually do at the birthday party? A: 【 3 】 B:Do you sing Happy Birthday? A: 【 4 】 B:Who is coming too? A

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九年级·英语·阅读理解Unit 2 We all own English.

If you meet a British person in the street, it is very likely that he or she will apologize whether it is his or her fault ( 过错 )or not. It seems that Britain is becoming a nation where everyone is saying sorry. Almost e

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九年级·英语·任务型阅读Unit 2 We all own English.

请阅读下面图文内容 , 按要求完成所给任务。 In a school, you may hear a student saying in Chinese, “ 我对汉语很感兴趣 ”, but you’re not in China. You are in a foreign country. Like the student, many foreigners are learning Chinese. But it’s not easy

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九年级·英语·填空题Unit 2 We all own English.

“Never give up!” It is my law( 法则 ) of life. It has brought me _________ . I learned the law from my father’s _________ story. My father was _________ in a poor village in the north of Jiangsu, China. When he was a young

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九年级·英语·阅读理解Unit 1 Have you ever been to an English corner?

Every year, more than 26,000 children arrive in Britain. We ask some new arrivals what they like best about their new lives and what’s different from home. Jarek, Poland I don't know anybody from Poland here, but I'm luc

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九年级·英语·填空题Unit 1 Have you ever been to an English corner?

A.new B.help C.it D.were E.because F.truth G.both H.dropped I.a J.more A blind boy sat on the steps of a building with a hat by his feet. He held up a sign which said, "I am blind; please 【 1 】 ." There were only a few c

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九年级·英语·任务型阅读Unit 1 Have you ever been to an English corner?

Reading newspapers has become an important part of everyday life. Some people read newspapers as the first thing to do in the morning, and others read newspapers when they have (1) ________ time during the day to learn w

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九年级·英语·补全对话Unit 1 Have you ever been to an English corner?

A: How nice to see you back, Li Lei! 【 1 】 B: Wonderful! I've been to many places of interest and I enjoyed myself in Disneyland. A: 【 2 】 B: Not really. Sometimes I got into trouble. They spoke too quickly and I couldn'

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九年级·英语·填空题Unit 2 I know that you will be better at maths.

Everyone has his dreams of the future. But do you know w 【 1 】 future really is? I think the future is now. That is to say, we m 【 2 】 treasure ( 珍惜 ) every minute and second. There is an old English s 【 3 】 , ”Gain time

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九年级·英语·阅读理解Unit 2 I know that you will be better at maths.

Technology is developing fast and it has become an important part of our life. Then what will the world be like in the future? 3-D food will be both delicious and nutritious ( 有营养的 ). We can use 3-D printers to print som

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九年级·英语·填空题Unit 1 Here’s to our friendship and the future

There once was a farmer who grew the best corn in his town. One day, his friend Scott asked him 【 1 】 he grew the best corn. The farmer told him that he often gave his good corn seeds ( 种子 ) to his 【 2 】 . “ 【 3 】 do you

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