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不限语文数学英语物理化学生物历史地理道法

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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·单词拼写/单词释义Unit 1 Know yourself

我的老板建议我在会议上发言前要三思。 My boss advises me ______before speaking at the meeting.

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九年级·英语·单词拼写/单词释义Unit 1 Know yourself

Mr Liu,our Maths teacher,is 35 years old.He is really a good teacher.Not only we students but also our head teacher （1）______（respect） him very much. Mr Liu is strict with us.As soon as this term began,students in our cl

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九年级·英语·完成句子Unit 3 Language in use

完成句子【1】昨天晚上我写完作文才睡觉。 I ______ go to bed ______ I finished ______ the composition last night. 【2】我们的国家正变得越来越美丽。 Our country is becoming ______ ______ ______ ______. 【3】我们必须尽可能早地到达学校。 We must get to school ______ ______ _

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九年级·英语·选择题Unit 3 Language in use

They won't leave school until they ______ their homework.

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九年级·英语·选择题Unit 3 Language in use

—How many times ______ you ______ Shanghai? —Only once.

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九年级·英语·选择题Unit 3 Language in use

—May I speak to Lin Tao? —Sorry, he is not in. He ______ to Guilin.

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九年级·英语·选择题Unit 3 Language in use

In order to protect the environment, people in Japan have to ______ for their trash.

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九年级·英语·填空题Unit 3 Language in use

用所给单词的适当形式填空【1】I can see some sheep ______ (eat) grass on the hill. 【2】His ______ (ill) resulted from bad food. 【3】Linda ______ (visit) the Science Museum next Sunday. 【4】Mr Huang ______ (teach) us English two years ago

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九年级·英语·选择题Unit 2 The Grand Canyon was not just big.

—How long have you ______ the motorbike? —For about two weeks．

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九年级·英语·选择题Unit 2 The Grand Canyon was not just big.

It ______ heavily when I left the cinema．

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九年级·英语·选择题Unit 2 The Grand Canyon was not just big.

There ______ a concert next week．

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九年级·英语·选择题Unit 2 The Grand Canyon was not just big.

When we ______ at the station，the train was leaving．

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九年级·英语·选择题Unit 2 The Grand Canyon was not just big.

It's ______you're tired，because you've been walking for hours．

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九年级·英语·选择题Unit 2 The Grand Canyon was not just big.

Guiyang is a beautiful and clean city．There are many flowers ______the street．

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九年级·英语·选择题Unit 2 The Grand Canyon was not just big.

______ the bottom of the river，some fish are swimming here and there．

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九年级·英语·填空题Unit 2 The Grand Canyon was not just big.

Ⅰ．用所给单词的适当形式填空【1】When it became dark，there was nothing ______（see）in the room．【2】The Grand Canyon is the ______（great）wonder of the natural world．【3】I can't ______（reply）to this question．Can you give me some advice? 【

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九年级·英语·选择题Unit 1 It’s more than 2,000 years old.

I think the Giant's Causeway is ______ natural wonder in the world.

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九年级·英语·选择题Unit 1 It’s more than 2,000 years old.

______ he was tired，he went on working.

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九年级·英语·选择题Unit 1 It’s more than 2,000 years old.

—I won't go to Ann's birthday party this coming Saturday. —______ you told me you would. What's happening ______ you?

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九年级·英语·选择题Unit 1 It’s more than 2,000 years old.

—I ______ the Great Wall next week. —Have a good trip.