NICOTINE ADDICTIONIf you have tried to quit smoking, you know how hard it can be. It is hard because nicotine is a very addictive drug. For some people, it can be as addictive as heroin or cocaine. Quitting is hard. Usually people make two or three tries, even more, before finally being able to quit...

时间:2025-06-14 17:40栏目:中学教育