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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
Coconut Cloud Latte ________ as the most popular drink in Haikou now.( )
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Fishing________in order to protect the ecosystem of Hanjiang River.( )
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Tea plants are grown on the sides of mountains. ( 改为同义句) Tea plants ____________on the sides of mountains.
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The model plane is made of . ( 就画线部分提问) ______ the model plane ______of?
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请阅读下面短文,根据语篇内容,在方框内的缩写文章中,填入与短文意思最符合的单词,并将答案写在答题卡相应的位置上.每空一词. Friends play an important part in our life.Although we think it\’s natural and nor-mal to have friends,we often don\’t have a clear understanding of how we ma
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— Is this table free, waiter? — I’m sorry, sir, these two tables have just been _______ by telephone, but that one over there is free.
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Actions __________ to protect the environment since last week.
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These problems________ about so far.
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好的学习者不害怕犯错. Good learners are not afraid of ____________.
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-My teacher suggested ___________all the work in just two days. -Really?It\’s hard to imagine ___________so much work in such a short time.( )
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—Excuse me.What did the boy say just now? —Sorry,I didn\’t______what he said.I was listening to the teacher.( )
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We have written a poem to encourage the people in danger. (改成被动语态) A poem ________ ________ written to encourage the people in danger.
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—______ free breakfasts ______ in all schools in China? —No, not yet. Only in the rural areas.
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As China grows stronger and stronger, Chinese ________ in more and more schools out of our country.
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—Jason, have you finished the article about school life? —Not yet. I'm afraid I won't make it unless I____ another two hours.
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She will have a holiday as soon as she _______ the work next week. ( )
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你看到有人乱扔垃圾,可以这样对他说: You shouldn\’t ______.
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Tea is produced . ( 就画线部分提问) ______ tea ______?
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Tea is grown by people in Hangzhou. ( 改为主动语态) __________________ in Hangzhou.
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(2016•东城区一模)Wonder is a book about a ten-year-old boy called August,or Auggie,who feels normal but looks very different. What's Wonder about? Auggie lives with his parents and sister in New York.He is a normal boy in man
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