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［初一英语作文］我想成为一名科学家（英汉）
2019-11-02I really want to be a scientist. I think the scientist is the best job for me. A good scientist can make the world change a lot. If I become a scientist, I will make the desert be coverd with green trees and grasses, make the war never take...
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［初一年级英语作文］学校组织去植树
2019-11-02March 12th is Tree Planting Day. This year our school bought enough trees before that day . On that day , we didn‘t had classes . The teachers and our classmates planted trees around our school. We began to planted trees as soon as we got...
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［初一年级英语作文］关于植树节的英语作文
2019-11-02March 12th is Tree Planting Day. This year our school bought enough trees before that day . On that day , we didn‘t had classes . The teachers and our classmates planted trees around our school. We began to planted trees as soon as we got...
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分式辅导资料
2019-11-02应知 一、基本概念。 分式：一般地，形如的式子叫做分式，其中A和B均为整式，B中含有字母，且B≠0。 【注意】 ①对整式、分式的正确区别：分式的分子和分母都是整式，分子可以含...
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［初一年级英语作文］我的家乡 My home town
2019-11-02My home town My home town isevery beautiful. it stands beside a wide river and is rich in fish and rice. But in the old days it was a poor and backward little town. many people had no work. they lived a hard life. In 1949 my hometown was li...
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［初一年级英语作文］我的同学
2019-11-02Liu Kai is my classmate. He is a good student and always ready to help others. One day on his way to school，he saw a little girl crossing the road. A car was coming towards her quickly and the girl was too frightened to move. The car nearl...
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全等三角形辅导资料
2019-11-02应知 一、基本概念 命题：可以判断出它是正确的还是错误的句子叫做命题，正确的命题称为真命题，错误的命题称为假命题。 在数学中，许多命题是由题设（或已知条件）、结论两部...
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［初一年级英语作文］关于英语重要性的英语作文
2019-11-02Its Important to Learn English English is widely used throughout the world. So many people speak it as a second language. ()n line, youll find lots of information in English. If you dont understand English, how can you know more about the wo...
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数据的整理与初步处理辅导资料
2019-11-02应知 一、基本概念 算术平均数：一组数据的总和与这组数据的个数之比叫这组数据的算术平均数。其计算公式为：，即：算术平均数=各数据的和÷数据的个数。 算术平均数是全部数据...
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函数及其图象辅导资料
2019-11-02应知 一、基本概念 函数：一般地，在一个变化过程中，如果有两个变量x与y，并且对于x的每个确定的值，y都有唯一确定的值与其对应，那么我们就说x是自变量，y是x的函数．如果当x...