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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
Tom has some crazy ideas. (改为一般疑问句) ______ Tom______crazy ideas?
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I can stand studying alone. (改为否定句) I______studying alone.
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Our teacher likes our project a lot. (用really改写句子) Our teacher______our project.
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She hates making model planes. (改为同义句) She______making model planes.
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He likes running in the morning. (对画线部分提问) ____________he______in the morning?
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学好一门外语对我们是有好处的。 ______ to learn a foreign language well.
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你在课余时间喜欢读书吗? Do you______ in your spare time?
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老师让我们两人一组合作。 The teacher asked us to______.
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下次进办公室之前,你需要敲门。 ______
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Spring Festival will come in a few days and everyone is getting things ready for this festival.Stella is shopping online.She wants to buy (1) (watch) for her brothers and she thinks shopping online is easy because we can
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Every year,the second Sunday of May is a special day for moms.It is (1) ( mother) Day.It is a good time to show (2) (we)love to our moms. In the UK,most children like (3) (buy)a gift.Chocolate or flowers are some common
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December 25th is Christmas Day. (1) that day,there is a very famous person to send gifts to people. (2) (he) name is Santa Claus in America,but people in some other (3) (country) call him Father Christmas,Saint Nicholas,
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A:Hi,Ann!Tomorrow (1) August 1st.When is your holiday going to start? B:Very soon.I'm (2) leave the day after tomorrow. A: (3) are you going to be away? B:About two weeks. A: (4) are you going? B:I'm going to the beach t
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Dear friend, Spring Festival is coming.Do you want to know about it?Let me tell you. That's my favorite festival. (1) is in January or February.In 2021,it is on February 12th.We are all very busy preparing (准备) things (2
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You must wash your face ______ (在……以前) you go to bed.
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______ (饺子) are my favorite food.
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It is known to all that music is an international language. (1) (music) from China,Japan,South Korea and the United States perform music in all (2) (kind)of styles.Although the music of each of these countries has charac
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老师将奖牌颁发给得奖者,以此来鼓励他更努力学习。 ______
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在编曲时,这位歌手喜欢加入天籁之音。 ______
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他最为人知的是凭借上一部电影赢得了奥斯卡。 ______
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