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#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·选择题Unit 2 If you ever go to London, make sure you visit the Science Museum.
To invent a new kind of electric light, Thomas Edison did lots of ____.
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九年级·英语·选择题Unit 2 If you ever go to London, make sure you visit the Science Museum.
The sign“______”is often found in a reading room or a library．
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九年级·英语·选择题Unit 2 If you ever go to London, make sure you visit the Science Museum.
He isn't a teacher，my father isn't a teacher， ______．
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九年级·英语·选择题Unit 2 If you ever go to London, make sure you visit the Science Museum.
Parents always compare their children ______ others'．
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九年级·英语·选择题Unit 2 If you ever go to London, make sure you visit the Science Museum.
This book is ______for a sixyearold child to read．
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九年级·英语·选择题Unit 2 If you ever go to London, make sure you visit the Science Museum.
It was a small town then，______ what it is now．
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九年级·英语·选择题Unit 2 If you ever go to London, make sure you visit the Science Museum.
Scientists sometimes ______ the human brain ______ a computer．
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九年级·英语·选择题Unit 2 If you ever go to London, make sure you visit the Science Museum.
Water is ______ air．We can't live without either of them．
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九年级·英语·选择题Unit 1 Don’t cross that rope!
— How long can I ________ the book? —For two weeks.
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九年级·英语·选择题Unit 1 Don’t cross that rope!
I can hardly hear what it is saying on TV. Would you please_______.
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九年级·英语·选择题Unit 1 Don’t cross that rope!
Look at the tail ______ that monkey！It's very funny．
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九年级·英语·选择题Unit 1 Don’t cross that rope!
What's the matter ______ Lucy？She didn't come to school today．
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九年级·英语·选择题Unit 1 Don’t cross that rope!
It's ______ the museum is empty；today is Sunday．
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九年级·英语·选择题Unit 1 Don’t cross that rope!
Look！There is a sign “No ______” in front of the building．
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九年级·英语·选择题Unit 1 Don’t cross that rope!
No ______ means you mustn't smoke here．
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九年级·英语·选择题Unit 3 Language in use
—I'm sorry．I didn't do a good job． —That's OK．You tried your best ______．
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九年级·英语·选择题Unit 3 Language in use
My parents warned me ______too much sweet before going to bed．
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九年级·英语·选择题Unit 3 Language in use
Miss Gao warned him ______ his English．
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九年级·英语·选择题Unit 3 Language in use
Pinocho isn't ______ honest boy，so we don't like him．
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九年级·英语·选择题Unit 3 Language in use
If you ______ the work on time，you will get 500 yuan as award．
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