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D) Practicality and skepticism. When looking at shallow reference books or looking up materials on the Internet, you should type (copy or copy) the code and run it yourself. You should modify other people's source code more and put forward your own opinions: why is the book not designed like this and why is it designed like that? What if you add some methods, method parameters, or member variables? You must do it yourself, at least run it. In addition, we should dare to ask questions and make bricks to bloggers. You can even question the commentary and intention of some chapters of GoF, not to mention some bloggers.Zhao Yuan, founder of Yixiu Mathematical Thinking: "Thinking ability products are not as direct and obvious as programming can make some programs, or as direct and obvious as mathematics can calculate a problem. Therefore, how to formulate an evaluation standard recognized by parents and present the curriculum effect is a big challenge that the industry will face."ViewGroup wants to distribute itself to its onTouchEvent and needs the interceptor onInterceptTouchEvent method return true to intercept the event.赵敏满心欢喜的看着情郎归来，却被这无端的质问，无端的耳光，一下子弄懵了。How do you do? It's my pleasure to answer your questions2017年，离家五年的南宫宇回国，解救了吴洁恩。对洁恩来说，南宫宇就像宇宙神秘的冥王星，让她心动着。但是洁恩却与南宫宇有着无法抹灭的羁绊，洁恩爸爸—吴强博士就是南宫宇哥哥死亡的纵火嫌疑犯。南宫宇辗转得知时光机的秘密，于是，2017年的南宫宇，来到了2012年。