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For interface programming, a lot of changes that may occur in the system in the future can be isolated. Why? If the code is written for an interface, he can implement the interface with any new class through polymorphism. However, when the code uses a large number of specific classes, once new specific classes are added, the code must be changed. Violating the opening and closing principle.听到外面的呼喊，范增的声音骤然凝滞，片刻之后说道：羽儿，你怎么来了。Anyway, Those 20 minutes are really like years for every minute. After that, there were several repeated exchanges of fire. Anyway, there are more or less injuries, Especially the purple venom, It's terrible. You have to peel off a layer of skin when you touch it. Fortunately, with Wang Yuanhe's experience, everything that is splashed is covered with floating soil. However, there is no good way to be bitten by that kind of monster like a dog. You can only do it hard. These two strange things have left some marks on my body, which is regarded as a "souvenir" for me to take part in the war. " When Zhao Mingkai said this, First he collapsed to hold the trouser leg of his left calf, When you pull it under your knee, put it on one side of your leg. Motioned me to look, Only then did I find out that there was a defect the size of an adult fist in his calf. The skin on it is wrinkled, Don't think, according to what he said before, This must have been caused by a dog-like "living biological weapon" bite, And after showing the bruises on his legs, He showed me the tiger's mouth on his right hand again. There is also a large scar on it, According to what he said, he was splashed with the purple venom in the last battle before the artillery group resumed firing. At that time, the epidermis quickly dissolved and rotted, so that the thumb ligament inside could be seen. However, the rescue was timely and the hand was saved. However, the scar with such a large area and a large depth could never be removed. In his words, this is also a special "memorial".继续喜剧人Midge和身边人们的故事。在20世纪50年代，25岁的纽约客米琪·麦瑟尔是个精明、阳光、充满活力、可爱的犹太女子，她曾经对自己的生活作出如下：上大学、结婚、生两三个孩子，然后在优雅的曼哈顿公寓中提供赎罪日晚餐。然而某天她的丈夫突然离开了她，毫无预警的她需要尽快想出她的新出路；对其他人来说，由家庭主妇变成上单口秀，显然是个惊人的选择，但对米琪而言却并非如此。　　但济公心存大善，因护助弱者、惩治恶人、经受多番考验，终从观音处得到百衲衣、破蒲扇、破僧帽三件宝器，使得他身具高强法力，从而开始了他侠胆济世，慈心度人的传奇故事。旺天生智力已比常人发展缓慢，年介三十岁，但智商只有七岁小孩水平。旺怀着一颗赤子童心，待人处事态度简单直接。即使遇上挫折，凭着他屡败屡战的精神，最后都会获得成功。Keep your name, keep your name and look at it slowly.