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#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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九年级·英语·完成句子Unit 3 The environment
动物和植物都是生物． Both animals and plants are______．
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九年级·英语·完成句子Unit 3 The environment
这种鸟频临灭绝． This kind of bird______．
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九年级·英语·完成句子Unit 3 The environment
她是一个在银行上班的人． She is a person______ in the bank．
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九年级·英语·单词拼写-单句Unit 3 The environment
He always tells you the truth______（间接地）．
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九年级·英语·单词拼写-单句Unit 3 The environment
There is some______（垃圾）on the ground．
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九年级·英语·单词拼写-单句Unit 3 The environment
Waste paper can be______（回收利用）．
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九年级·英语·单词拼写-单句Unit 3 The environment
Heat the oven to a______ （温度） of 200℃．
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九年级下·英语·阅读理解Unit 2 Culture shock
阅读下面短文，从每题所给的A、B、C、D四个选项中选出能正确回答所提问题或完成所给句子的最佳答案。 If you look at the top of your phone, you'll usually see a little symbol that says 3G or 4G. The "G" stands for the "generation" of your mobile network. But these symbols
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九年级下·英语·阅读理解Unit 2 Culture shock
根据短文理解，选择正确答案。Last Friday, for our weekly event, we watched Peking Opera at the Qingdao Grand Theatre. As a young man from the United States, it was my first time to watch live Peking Opera, and it was special. Peking Op
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九年级下·英语·填空题Unit 2 Culture shock
阅读下面短文，从各题所给的A、B、C、D四个选项中选出能填入文章中相应空白处的最佳答案。 One day I ran into a stranger as he passed by me. I said sorry to （1） immediately. He replied with a smile and said, "I'm sorry, （2） . I wasn't watching out for you." Later th
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九年级下·英语·填空题Unit 2 Culture shock
根据短文理解，从A、B、C三个选项中选择最佳答案填空。 Fashion is （1） of culture. The Tang costume stands （2） Chinese history and fashion culture. It （3） Tang costume when China became known to other countries （4） the Han and Tang dynasties. From
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九年级下·英语·填空题Unit 2 Culture shock
根据短文理解，从A、B、C三个选项中选择最佳一项填空。 Growing up is not always easy. When we face difficulties, a spirit of depending on （1） is more useful than crying for help. That's what Hong Zhanhui's story of growing from boy to man （2） fami
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九年级下·英语·填空题Unit 2 Culture shock
Either you or I (be) good at drawing.
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九年级下·英语·填空题Unit 2 Culture shock
Both she and I (be) going to graduate this term.
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九年级下·英语·填空题Unit 2 Culture shock
If you (fail) in the final exam, you will let your parents down.
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九年级下·英语·阅读理解Unit 1 Great explorations
阅读理解 Today is December 15, 2030. Influenced by the launch of the first manned mission to Mars next month, you will most likely get a gift card for a space trip. The interest in trips, 100km above the surface of the Earth
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九年级下·英语·阅读理解Unit 1 Great explorations
根据短文内容，选择正确答案。 What can little money do? It's worth thinking it over. A few weeks ago, I got $120 from a friend in a Smile Group. He asked me to do good things with the money. Since then I have used the money to help str
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九年级下·英语·填空题Unit 1 Great explorations
完形填空Professor Jonathan Wong of the Department of Biology takes part, in low-carbon (低碳) living projects. Here, he tells us how we can lead a low-carbon life by paying （1） to how we dress, eat and （2） Here are his words.
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九年级下·英语·填空题Unit 1 Great explorations
根据短文理解，从A、B、C三个选项中选择最佳答案填空。 A young man went to visit a wise man living deep in the mountain for the wisdom of life. "Excuse me! Could you please tell me what the most （1） day in our lives is? Is it the day when we were
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九年级下·英语·翻译Unit 1 Great explorations
这个工厂是一年前建立的。 The factory was one year ago.
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