2020夏山东济南实验中学七年级数学下册第六章二元一次方程组6.2二元一次方程组的解法加减消元法即时练习课件

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1、加减消元法,2、已知3a3xb2x-y和-7a8-yb7是同类项,求xy .,即xy=-3,3、已知(3m+2n-16)2与|3m-n-1|互为相反数 求:m+n的值.,即:m+n=7,5、小亮对小明说:“我的生月和日相加是37,月的2倍和日相加是43”小亮说真话了吗?,解:设小亮的生月和日分别为x,y,依题意,得,6月只有30日, 小亮说的是假话.,解得,赠送:七年级英语 期末复习课,Unit 1A Trip to the Silk Road . 单词拼写 ()根据句意及首字母提示补全单词 1. He is friendly to everyone. I b_ he is a good bo

2、y. 2. Look! Wang Hong and Zhang Lin are walking a_ the river.,elieve,long,3. He is lonely. Because he has f_ friends here. 4. English is one of the m_ subjects in our school. 5. When you c_ the road, please look left and right.,ew,ain,ross,()根据句意及汉语提示完成句子 1. The river is about four metres _(宽的). 2.

3、John likes all kinds of _(乐器). 3. I am going to Beijing next week. Its a good _ (机会)to try some Beijing Roast Duck.,wide,instruments,chance,4. My mother bought some new _(盘子) yesterday. 5. If you run too fast, you will _(跌倒) down. 6. My mother often keeps _(日记) in her free time. 7. Children need to

4、know how to be _(安全).,dishes,fall,diary,safe,8. Class 8 is _(举行) a class meeting now. 9. This summer holiday I went to the Hong Kong- Zhuhai-Macao _(桥梁) with my parents. 世纪 金榜导学号 10. The good news is very _(使人激动).,holding,Bridge,exciting,. 用方框中所给短语的适当形式填空 go for a walk, take a picture, take a tour,

5、be famous as, a few 1. Zhang Jie _a singer. 2. There are _books in the bag.,is famous as,a few,3. Can you _of me before the tall building? 4. Mr Hu likes to _after supper. 5. Lets _during the coming holiday.,take a picture,go for a walk,take a tour,. 根据汉语意思完成句子 1. 我可以用一下你的词典吗? 当然可以。 _ I _ your dicti

6、onary? Sure.,May,use,2. 我校正计划和李明的学校一起环游中国。 My school is planning _ _ _ China _ Li Mings school. 3. 这是我校的通知。 _ _ _ _ _ my school.,a,trip,around,with,This,is,a,note,from,4. 我要给李明发一封电子邮件, 告诉他这个好消息。 I _ _ Li Ming _ _ and _ _ the good news. 导学号 5. 丝绸之路是由丝绸制成的吗? _ the Silk Road _ _ silk?,will,send,an,e-ma

7、il,tell,him,Is,made,of,6. 我们一起沿着丝绸之路旅行。 We _ _ the Silk Road together. 7. 从山海关到北京有多远? 大约308千米。 _ _ is _ from Shanhaiguan to Beijing ? Its _ 308 _.,travel,along,How,far,it,about,kilometres,8. 我们没有足够的时间看到它的全部。 We dont have _ _ _ _ it all. 9. 在一个新地方你会玩得很开心。 You will _ _ _ _ _ in a new place.,enough,tim

8、e,to,see,have,a,lot,of,fun,10. 这儿有一个标牌, 上面写着“禁止拍照! ” Here is a sign. It says “_ _! ” 11. 成千上万只鸟住在这片森林中。 _ _ birds live in the forest. 12. 在回家的路上, 吉姆买了一个汉堡包。 _ _ _ _, Jim bought a hamburger.,No,photos,Thousands,of,On,the,way,home,Unit 2 Its Show Time! . 单词拼写 ()根据句意及首字母提示补全单词 1. The noodles t_ nice. W

9、ould you like some? 2. This computer is w_ 4, 000 yuan.,aste,orth,3. The Chinese i_ paper. 4. Im sorry I didnt r_ you are such a good teacher. 5. In a_ China, kings lived in the palaces. 6. The hamburgers are w_ food.,nvented,ealize,ncient,estern,()根据句意及汉语提示完成句子 1. He _(仍然) lives in a small house. 2

10、. His _(旅程) to Tibet lasted for a week. 3. Could you _(描述) something about your school life?,still,journey,describe,4. We can get lots of _(经验) from our life. 5. This is my _(自己的) bedroom. 6. Her smile made me feel warm and lively. It was like a hidden _(财富).,experience,own,treasure,7. I have two sw

11、eaters. One is yellow and the _(其 他的) is red. 8. Mr Zhang gave us some good _(建议) on how to learn English well. 导学号 9. We _(应该) walk on the sidewalk. 10. Its raining hard. But he is _(还) standing on the playground.,other,suggestions,should,still,. 用方框中所给短语的适当形式填空 make a joke, work on, take part in,

12、climb up , open ones eyes, talk about, place of interest, be famous as, think about , have a rest 1. Mr Wang is _buying a new car.,thinking about,2. I will _an English competition next week. 3. How many _are there in your city? 导学号 4. Jim is good at _. 5. Lets _something interesting. 6. Hangzhou _a

13、tourist city.,take part in,places of interest,making a joke,talk about,is famous as,7. Can you _the tree and pick an apple for me. 8. Youre tired. You must _ 9. The writer is _his new novel. 10. This book can _and you should try reading it.,climb up,have a rest.,working on,open your eyes,. 根据汉语意思完成句

14、子 1. 我们在丝绸之路上听说了很多关于他的事情。 We heard _ _ _ him on the Silk Road. 世纪 金榜导学号 2. 在4岁时, 他可以弹钢琴了。 _ _ _ _4, he can play the piano.,a,lot,about,At,the,age,of,3. 这节课持续大约45分钟。 The class _ _45 minutes. 4. 我希望有一天我可以飞。 I _ _ _ someday.,lasted,about,hope,to,fly,5. 请你再多告诉我们一点点, 好吗? Can you tell us _ _ _ _, please? 6. 我迫不及待要见到她。 I _ _ _ _ her. 7. 我们可以用它来做衣服。 We can _ clothes _ it.,a,little,bit,more,cant,wait,to,see,make,from,8. 我想学拉二胡! I want _ _ _ play the erhu! 9. 你为什么不学习一种传统的中国舞蹈呢? _ _ _ learn a traditional Chinese dance? 10. 它花费许多工序, 但最终的成品是值得的。 It _ a lot of work, but the end product _ _ it

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