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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
朋友是是一生的宝贵财富,每个人都有自己的好朋友.假如你有一个最好的朋友Lucy,请根据表格所提供的信息,描述你和Lucy的相同点和不同点,以及你们之间一件难忘的回忆. Name Lucy I Age 12 13 Height 1.5 meters 1.55 meters Character quiet,smart outgoing,hard-working Habits hardly ever exercise exercise 4 t
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Mark Twain,an American writer,was born in 1835 in a poor village. 他是他们家第六个孩子. When he was 12 years old,his father died.The next year,he left school and began to make a living by him-self(自己谋生).He had many jobs and he als
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century,hit ,same ,but ,shout,they,wear,how ,outdoor ,rule Tennis is a very popular sport all over the world.Every year,tennis fans watch Wimbledon Championship(温布尔登网球锦标赛) to see (1)______ favorite players.Tennis is also
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歌;歌曲______
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—My mother says that we won\’t go on a trip to Yunnan. — .You have been looking forward to it.( )
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you to wishes Best(.) ______
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What about______ (go) to the shop?
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The twins ______ (be) fond of the new idea in the magazine article.
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I am John.I like(1)______on big trips.I usually(2)______on a trip on my summer holiday.I often go to London(3)______my parents.Because my grandparents live there.But last summer holiday.I(4)______go to London.My parents
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Hello,my name is Wu Fang.I am(1)______Anhui.I\’m 13 years old.I\’m a(2)______in Class Three,Grade Seven.I am thin(3)______friendly.I (4)______a black cat.It is very(5)______.I (6)______play with it. (7)______ school,I ha
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Cats like fish but rabbits like eating c ______.
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选出单词r u n中划线部分的正确读音______.( )
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Alex is a young boy.He likes music very much.He wants to play the piano and join the school music club.But all these things are difficult for him.Why?Because he has no hands. Alex thinks he can never play the piano and f
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Sandy looks ______/slɪm/ in that yellow dress.
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Do you know Chatbots(聊天机器人) and other AI programs(人工智能项目)?Do (1)______(student) need them at school,Do teachers need them at school,too?People look at it in different ways. Some people think Chatbots are useful to help s
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你想告诉对方久未谋面,可以这样说: ______.
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—Have you heard about the book Stories of China Retold in English? —Of course!It\’s a meaningful book because it helps Chinese culture.( )
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Would you mind down the music?It\’s too noisy.( )
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People will tell you the only way to really learn a language is to completely immerse(浸入) yourself in a country where that language is spoken.Not all language learners,of course,will have the chance to spend some time in
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事实上,他是一个好搭档. In fact,he is a good ______.
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