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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|}=
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I want to make a ______ about the terrible environment in our neighbourhood.(complain)
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All the ______ in Shanghai must help to fight pollution.(city)
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We have three main subjects at school, ______Chinese,Math and English.(include)
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Our children go to the same school as ______(they).
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He has supported the local team ______for 30 years.(faithful)
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You shouldn\’t invite these little pupils to see such a ______film.(fright)
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Betty\’s friend celebrated her ______ birthday last weekend.(twelve).
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A.natural B.stores C.passes on D.depends on E.seldom Most people don\’t know anything about soil(土壤).In the city,we(1)______see soil unless there\’s construction work.It\’s hard for us to realize that everything(2)______
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-Jill,you look busy.________ -Thank you,Peter,but I can manage it myself.( )
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My parents plan to spend in Harbin this Christmas.( )
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Could you please tell me________?( )
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The duck\’s large feet _____ them quickly through the water.( )
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he is an elderly man,he is still very active in many volunteer activities.( )
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They had no but short their journey because of the sudden heavy rain.( )
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wonderful the advice you\’ve given to the class teacher is!( )
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The sooner you start,the _____ you\’ll finish doing your work.( )
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The funny story in a beautiful mountain.( )
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--Have you heard about the news that several Chinese drones(无人机)gave a wonderful performance in Saudi Arabia(沙特)? --Of course. of drones is up to 6000.( )
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假设你叫 Tom,你们学校要推荐一名"最美学生",你想推荐Sam.请根据表格内容,写一封90词左右的推荐信.信的开头和结尾已给出,不计入总词数. 姓 名 Sam 性格、品质 自信 不害怕在许多人前面演讲; 勤奋 对学习标准高; 有条理 …… 乐于助人 …… 在校: 在家: 尊敬师长,团结同学; ………… 喜爱的服装和颜色 蓝色T恤和黄色长裤,因为蓝色……,黄色……(请适当发挥) 其它 有爱心,经常参加慈善活动,把绝大部分业余时间用于帮助
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Many things around us may affect our feelings and moods.For example,before you give (1)______ speech,you may feel nervous.Living in the neighborhood filled with(2)______ (noisy) makes you upset and you may have (3)______
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