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　　在一次表演过后，她们结识了更为年长的作家Melissa，以及她的丈夫Nick，一位帅气但沉默寡言的帅气演员。Mellisa对两人非常感兴趣，四人便开始了来往。DoSth d1=new DoSth (Say);胡钧便仔细地询问他，最近值夜排班的情形。The principle of opening and closing means opening to expansion and closing to modification. When the program needs to be expanded, the original code cannot be modified, but the original code should be expanded to achieve a hot plug effect. Therefore, a summary of one sentence is: in order to make the program scalable, easy to maintain and upgrade. To achieve this effect, we need to use interfaces and abstract classes, etc. We will mention this point in the later specific design.当真是惊喜啊，守候了这么久一直没有消息，想不到今日竟这般好运，当真是踏破铁鞋无觅处，得来全不费工夫。Alter database example Rebuild Log on (name=Example_log, filename= 'C:\ Program Files\ Microsoft SQL Server\ MSSQL10. SQL2008\ MSSQL\ DATA\ Example_log. Ldf')Hollywood Law: Don't call me, I'll call you