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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|}=
精选练习题目
You ________ be absent-minded ( 心不在焉 ) in the English class.
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A: May I eat some chocolates? B: I’m afraid you________. It’s time for bed.
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A: May I leave now? B: No, you ________. You ________stay here.
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It is 11:00 p.m now. Peter hasn't come back yet. His mother ______ be very mad at him.
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阅读下面短文,从下面每小题的A、B、C、D四个选项中选出最佳选项。 I'm a Chinese boy. I love travelling a lot. And I've been to many great places. But I've never travelled into space. My dream is that I can fly to the Moon one day. I know Chinese people
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Do you think of the future? Three friends and I make a poster (海报) to show our thoughts (想法) in a class meeting. The main (主要的) ________________of the poster is black. We hope it can make people________. We draw a green
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填空题 【1】Two Chinese got to the Moon by s________. 【2】There are many kinds of beautiful flowers in the g________. 【3】A trip to the Moon will c________ a lot of money. 【4】I am going to send a p________ to my e-friend on his
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I really love my job because I enjoy working with small children and like the challenges and awards from the job. I also think my work is important. There was a time when I thought I would never have that sort of career
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Making friends is a skill. Like most skills, it _______ patience( 耐心 ). If you want to meet people and make friends, you must be willing to take some action. You must first go where there are people. You won’t make frien
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Do you know 【 1 】 lives of children in Victorian Britain? Are you 【 2 】 (interest) in it? I searched online and found out the 【 3 】 (follow). In Victorian Britain, thousands of people came to the cities to work in 【 4 】
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选词填空 heat, love, programme, afford, advantage 【 1 】 It is difficult for a young man to ________ to buy a house because the price is too high. 【 2 】 Could you tell me some __________ of life today compared to that in the
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Everybody is afraid of something. That’s what more than 1,700 kids told us when we asked them about fears and scary( 害怕的 ) things. We gave kids a list of 14 scary things and asked which one frightened them most. Here are
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When I was a boy, every holiday that I had seemed wonderful. My parents took me by train or by car to a hotel by the _______ . All day, I seem to remember, I _______ on the sands with strange _______ children. We made ho
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Nowadays, more and more people are in poor health. If we want to keep healthy, we should have a good 【 1 】 ( eat) habit. First, we should have 【 2 】 balanced diet( 平衡饮食 ). It means we should have 【 3 】 (difference) kinds
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选词填空 deaf, simple, speak up, do, medicine 【 1 】 Some people think life in the past was ________ and healthier than today. 【 2 】 Now people live longer than they _________ in the past. 【 3 】 In the past, people could easi
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Pingyao is one of China’s three protected ancient cities (the other two are Xi’an and Jingzhou). Lying in the middle of Shanxi Province, 90 kilometers south of Taiyuan, Pingyao ancient city used to be about two hours’ dr
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Hong Kong June 5, 2002 Dear Jamie, I’ve been in Hong Kong for three days now, and I’m having a great time. It’s a very exciting c 【 1 】 , and very different from London. Yesterday my friend s 【 2 】 me around Hong Kong. I
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Read the passage and fill in the blanks with proper words ( 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): Water is very important for living things. Without water there can be no 1 【 1 】 on earth. All animals and plants need wate
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Choose the words or expressions and complete the passage ( 选择最恰当的单词或词语完成短文): Mrs Wilson, the middle-aged wife of a rich businessman, invited some of her friends to lunch. She was very anxious to try a new way of cooking
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Choose the best answer ( 根据短文内容,选择最恰当的答案): When the weather is hot, you go to a lake or an ocean. When you are near a lake or an Ocean, you feel cool. Why? The sun makes the earth hot, but it cannot make the water very h
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