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The principle is to try to use synthesis/aggregation first instead of inheritance.虽然是长篇大论，但主要内容和中心思想确是十分突出——封杀杨长帆。A4.1. 2.5 Fundus.For the current Windows 2000/XP/2003 operating system, the stability of the system itself is no longer a problem, but a large number of drivers and application programs are the main culprit that endangers the stability and reliability of the system. It may have worked very normally, but one day the system could not start normally after upgrading a video card driver with a Bug or installing a new version of antivirus software. In order to solve such problems that will affect the normal operation of Windows but are not Windows' own problems, Microsoft has prepared a safe mode for this purpose.RudderWhat are the problems with the 10,000-hour law?Some plants are very picky when choosing pollinators. The flowers of European Trollius are like a real safe deposit box, and only six kinds of insects know the code to open the safe deposit box. These lucky people all come from the genus Brevicorn. Only they know how to get into the sepals of European Trollius and find the center of the flower. However, no matter how hard other insects try, they can only fail with disappointment. The short-horned flower fly, which has gone to great pains to pollinate European Trollius, will naturally receive considerable "remuneration". Female short-horned flower flies lay eggs on the carpels of flowers. When the larvae are hatched, they will eat the seeds of flowers and grow up. This symbiotic relationship also has certain risks for European Trollius. The more short-horned flower flies, the greater the chance of pollination, but at the same time, the more insects parasitic on flowers. The cooperative relationship between the two was formed millions of years ago and continues to this day. It is a model of relative balance and harmonious symbiosis in nature.