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高频错题
#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
Dear Seth, You are only three years old, and at this point in your life you are not able to understand this letter. But some day when you _______ , I hope you will find something _______ in what I am going to share with
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If you wish to become a better reader, here are four important things to remember about reading rate : ● Knowing why you are reading or what you are reading to find out will often help you to know whether to read fast or
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A couple of weeks ago, my friend offered to sell some of our things for us. I thought it was a good chance to clean my 7-year-old son’s room and _____ some toys that were no longer suitable for him to play with. We _____
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It feels like every time my mother and I start to have a conversation, it turns into an argument. We talk about something as simple as dinner plans and suddenly, my mother will push the conversation into World War III. S
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Soon it would be the holidays, but before that, there were year exams. All the students had been working hard for some time, going over their lessons for the exams. If they didn’t _____ , they would have to retake them i
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Jubilee Swimming Club Rules •All swimmers must take a shower before they go into the pool. •Diving is only allowed from the diving board. •Running and playing near the pool is not allowed. •Club members may bring guests
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Traffic rules are made to keep order on the road. They also help to keep people (1) . The pedestrian(行人)has as many rules to (2) as the driver of a car. You should walk at the side-walk or at the edge of the road. (3) lo
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Since you choose it as your job, you're supposed to make effort to do it well.
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What do you think is the most common illness? Do you get ill sometimes? We are lucky to live now because there are lots of medicines to make people better. The most common illness in the world is the cold. It often begin
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A gift is necessary when one is invited to visit friends in China. Remember that usually Chinese people will not open the _____ in front of the person who gives it. To show the respect, it may be _____ to explain what th
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they, happily, are, although, over, discussing, the, is, class ________________________________________________________________________ .
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写作 你知道什么是健康的生活方式吗? 请以What is a healthy lifestyle为题, 根据下列提示写一篇不少于80词的英文短文。可适当发挥。 提示: ①充足的睡眠; ②积极的锻炼; ③合理的饮食。
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语法填空题 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, 在空格处填入一个适当的 词或使用括号中词语的正确形式填空。 About the importance of health, nobody can explain (well) than your doctor. They are the people who really know the importance of keeping fit and healthy.
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他每天游泳. He______.
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上周你们学校举行了运动会.你们班取得了最好的成绩,因为你们班有最快的赛跑选手吴强,他在比赛中打破了学校纪录.你们班的跳高第一,跳远第二.三班成绩从第三名升到第二名,他们在400米赛跑这一项目上得了第一.二班成绩最差,但他们在跳远比赛这一项目上获得了冠军.请用英语记录这次运动会,包含上述信息.
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暑假即将来临,某校学生会打算在假期举行为受灾地区(disaster area)的孩子们奉献爱心的活动,请你用英语写一份倡议书,号召同学们伸出援助之手,奉献自己的爱心。要求:1. 文中应该包括至少两种帮助方式及这样做的目的和意义。2. 80--100词,文章开头已给出,不计人总词数。Dear schoolmates: While you are sitting in our bright classroom, remember there
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近几年来,人类活动对大自然的破坏引发了各种各样的自然灾害。作为一名中学生,请你根据以下内容,写一封倡议书,呼吁大家关注这些自然灾害,采取措施,拯救地球。要求:1)词数100左右;文章开头已给,不计词数;2)短文须包括表格中提示的所有要点,再适当发挥,增加细节,使短文连贯、通顺;3)短文中不得出现真实的人名、校名等相关信息。Natural disasters Harm to humansActions 1) not enough food
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我国许多地区都处于严重缺水状态,如何保护好清洁水源?人们应该怎样节约用水?是我们面临的巨大挑战.根据下面的提示,写一篇70词左右的短文. 要求:1)语言表达正确; 2)包括以下要点; 3)可以适当发挥. 要点提示 参考词汇 益处:水的重要性;生活离不开水 important, can't live 存在的问题:浪费水严重;水污染严重 less water, don't care of,water pollution 建议:节约用水;保护
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由于大雨我迟到了. I was late______ the heavy rain.
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假设你拥有三到四天的假期,你可以选择去你想去的任何一个地方,请以“My dream holiday”为题写一篇英语短文,描述你梦想的假期。要求: 1. 文中不得出现真实的人名和校名等相关信息。 2. 词数:80-100。标题和短文开头已给出,不计入总词数。 My dream holiday Everyone has a dream holiday. I hope I……
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