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高频错题
#1 · 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; \
#2 · 常错题
在平面直角坐标系中,点A的坐标为(1,1),点B的坐标为(11,1),点 C 到直线 AB的距离为4,且△ABC是直角三角形,则满足条件的点 C 有个.
#3 · 常错题
如图所示,直线AB、CD相交于点O,OM⊥AB, (1)若∠1=∠2,求∠NOD的度数 1 (2)若∠1=∠BOC,求∠AOC和∠MOD的度数. 4
#4 · 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|}=
#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
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)
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Last week I (1)______(go) to an art show.A painting caught my eye.To my amazement(惊讶),Steven painted it,one of my(2)______(student).Then many things about him came into my mind. Steven was (3)______a poor family.His pare
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A young man woke up one morning under a bridge and checked his pocket.All he had left was less than ten dollars.He bought food and as he sat down to eat,an old man and two children came along.The old man asked him to hel
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阅读下面短文,做出正(A)误(B)判断. Toby\’s best friend is Jake.They are similar to each other in some ways.Both of them are friendly.They like exercising in the morning.And they often play basketball together on the weekend.But they a
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Do you have a friend for life?I have one.My friend is an outgoing girl.Her name is Cicy.She tells me that "Cicy" means "a little princess" in English.I think she\’s a real princess.It has been over 6 years since she beca
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Dear Sherry, I am very short.I want to be taller.I have tried jumping up and down and swimming,but none of these things have made me taller.My classmates laugh at me.I think my height is a serious problem.What should I d
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A:Hi,Alice.How is everything going? B:Not bad! (1)______ A:Yeah,I went to Chongqing. B:(2)______ A:I went there by plane. B:Who did you go there with? A:(3)______And we had great fun. B:Then what did you do in Chongqing?
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-Hi ,Diana,how was your summer holiday ? -__________! I enjoyed myself in the sea very much.( )
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I watched my pet dog with a friendly white cat ten minutes ago.( )
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—The twins look the same. —I don\’t think so.Li Lei\’s eyes are bigger than .( )
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The Internet makes the world become .( )
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Jim is funnier than _______ in his class.( )
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The talent show is ______ the game show.I like both.( )
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I left my keys in the room yesterday.I had to get in ______the window.( )
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Jack was a little disappointed,he still went on with his work.( )
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-I can\’t find my CDs.-________you put them in that bag.( )
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I want to know you will come to my house tomorrow.( )
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-Can you catch what I said? -Sorry,I can understand it because you speak very quickly.( )
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-______the heavy rain,we didn't go camping yesterday. -What a pity!( )
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We don\’t have to buy this sweater,though it is_______.( )
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-Is there else in the classroom? -It is empty. is listening to a speech in the school hall.( )
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