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Silent Witness follows the work of forensic pathologist Dr. Sam Ryan, played by Amanda Burton. The series was created by an ex-police officer, Nigel McCrery - who has also published five Silent Witness novels based on the seriesJoin Gumball Watterson and his family as they must deal with all kind of funny and crazy situations.(未完待续……)PS：先对亲们说抱歉，从明天开始，每天一更，早上七点发。TelecommunicationsY市，某集团公司老板林树在地下黑帮威逼利之下欠下巨额赌债，决定铤而走险，到赌埤是行最后一博，可是赌运不佳，遭遇老千强哥暗算，更在赌场　林树的神秘失踪，林家老太太，其妻刘爱兰、女儿林佳宜艰难度日，地下赌庄的六子亦步步进逼。眼看林家经营的百年面店危在旦夕，而女儿林家宜又不幸患上重症，生死垂危…… 林树决定孤身暗中调查地下赌场，待罪之身又不敢向公安部门报案；黑道老大辉哥：为了报复林树杀死强哥，辉哥利用六子威胁林家，交出祖屋……林树混迹地下赌场之内，暗中寻找强哥死亡真相，在六子的配合下，设计将辉哥骗到面馆……D > B enters the synchronized block, and since instance is not null at this time, it immediately leaves the synchronized block and returns the result to the program calling the method. E > At this point, thread B intends to use the Singleton instance, only to find that it has not been initialized, so an error occurs. Therefore, there is still the possibility of errors in the program. In fact, the running process of the program is very complicated. From this, we can see that it is more difficult and challenging to write programs especially in multi-threaded environment. We further optimized the program: