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Try {Grandpa said that as long as you live on this side of the border, you have to protect it. This sentence was not said by Grandpa to me, but by him to his seven children. Now, his two children have taken over his share of the responsibility from him.I nodded at this passage, Understand that what Zhang Xiaobo said is indeed reasonable, It is not a lie, Here I think it is necessary to give you one thing about popular science. So we have to say something digressive: The result of a real bullet hitting a petrol tank is not the same as that shown in most movies. One shot can explode the petrol tank, But this is not the case, Although a pure metal projectile will rub against the air at a speed of hundreds of meters per second to generate equivalent heat, And will produce sparks after hitting the metal oil drum, But none of this is enough to ignite petrol, Especially for gasoline with a large total amount, to ignite gasoline, please remember one thing-open flame must be used. In addition, gasoline is a flammable item, but it is not an explosive item in the true sense. Only after reaching a certain total amount can explosion be caused. If the total amount is insufficient, it can only cause combustion without explosion.赵向阳和赵向东都上高三，两兄弟的性格完全不同。哥哥向阳温顺乖巧，是老师宠爱的好学生。弟弟向东学习成绩也很好，性格耿直，从小喜欢舞刀弄棒，曾是市里的少年散打亚军。向东暗中喜欢同年级且又是邻居的漂亮女生徐美萍。可美萍喜欢的却是哥哥向阳。由于美萍的父母早亡，美萍一直是百家饭长大，尤其是和赵家关系甚好。 　　B. Nasal pinching and inflation examination.夺得了初一，躲不过十五，有些事情拖延不是长久之计，还是得尽早面对。B) It is suggested to start from a simple scene and discover or design a certain pattern by yourself. From this, you can understand how the model solves the problem. In this way, the model becomes your own thing, and you will not have the problem that it is easier said than done. All design patterns are just the application of basic principles and concepts in specific occasions. You may not know the name of a design pattern, but you know all its advantages, disadvantages, variants and applications. Seeing mountains is not mountains, seeing water is not water.