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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·选择题Unit 1 He’s the boy who won the photo competition last year!
I am the person______ wrote to you last week．
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九年级·英语·句型转换Unit 1 He’s the boy who won the photo competition last year!
句型转换 【1】He was an English teacher．He loved climbing．（改为复合句） He was an English teacher ______ ______climbing． 【2】More and more families in China buy cars．（改为被动句） Cars______ ______ by more and more families in China． 【3】Wh
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九年级·英语·选择题Unit 3 Language in use
---I’m really _________ before the exam. ---Take it easy. You’re the best.
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九年级·英语·选择题Unit 3 Language in use
Stay away from junk food, please. It’s bad for us，_________ for children!
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九年级·英语·选择题Unit 3 Language in use
Everybody should remember it is not _________ to swim in the river alone．
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九年级·英语·选择题Unit 3 Language in use
In China it is a custom to give kids lucky money, _______ during the Spring Festival.
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九年级·英语·选择题Unit 3 Language in use
—Do you know when they ______？ —I'm not sure．I will call you when they ______．
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九年级·英语·选择题Unit 3 Language in use
______ this way，we can cook delicious meat．
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九年级·英语·选择题Unit 3 Language in use
Eating more vegetables is good ______ your health．
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九年级·英语·选择题Unit 3 Language in use
I want to buy a desk ______ of wood．
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九年级·英语·选择题Unit 2 Repeat these three words daily: reduce, reuse and recycle.
I sit in the front of the classroom ______ I can hear clearly．
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九年级·英语·填空题Unit 2 Repeat these three words daily: reduce, reuse and recycle.
Boys and girls, have you ever read the book The Adventures of a Plastic Bottle ？ It's written _____ Alison Inches, a _____ (success)children's book author. This is a great diary story about _____ (recycle), told from the
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九年级·英语·填空题Unit 2 Repeat these three words daily: reduce, reuse and recycle.
根据短文内容和括号内所给汉语意思, 写出空白处各单词的正确形式(每空一词)。 We should do something that we can to _____(保护)the environment. In our _____(每日的)life, we should _____(分开)the waste into things to recycle and things to throw away. Try to use _____
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九年级·英语·填空题Unit 2 Repeat these three words daily: reduce, reuse and recycle.
用方框中所给单词或短语的适当形式填空。每词仅用一次。 throw away；divide；repeat；plastic；rapid 【1】The teacher ________ the class into small groups. 【2】Waste paper mustn't _________. We should keep our environment clean. 【3】It's unbelievable that tec
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九年级·英语·任务型阅读Unit 2 Repeat these three words daily: reduce, reuse and recycle.
Recycled plastic bottles have been used to make a house, but now Robert Bezeau from Canada is building a village with plastic bottles. The amazing village, called Plastic Bottle Village, is deep in the jungles of an isla
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九年级·英语·阅读理解Unit 2 Repeat these three words daily: reduce, reuse and recycle.
My sister Alli and I always try to stop people dropping cigarette butts(烟蒂) everywhere. We have done this for seven years. One day, we were walking in our hometown and saw hundreds of cigarette butts on the ground. They
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九年级·英语·填空题Unit 2 Repeat these three words daily: reduce, reuse and recycle.
用方框中所给短语的适当形式填空 divide into; change…into; do with; ask for; take steps 【1】When something is wrong with my computer, I don't know what to ________it. 【2】At the age of nineteen, I ________parttime jobs in some small radio
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九年级·英语·单词拼写Unit 2 Repeat these three words daily: reduce, reuse and recycle.
根据句意及汉语提示完成单词 【1】—What would you like, Tony? —A________(瓶)of water. 【2】I told him I was his second eldest________ (孙子). 【3】I think diet is the first________ (步骤)to lose weight. 【4】________ (回收利用)waste paper means protect
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九年级·英语·选择题Unit 1 If everyone starts to do something, the world will be saved.
It was not until midnight______ the noise of the street stopped．
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九年级·英语·选择题Unit 1 If everyone starts to do something, the world will be saved.
—Do you know if we______ tomorrow? —I'm not sure．We will go if it______．
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