你认为良好的习惯是有感染力的吗? 　　Generallyspeaking,itisofnodoubtthatgoodmannersareinfectious. 　　However,therearetimeswhenwemeetsomepeoplewhoarenotaffectedbyotherpeople'smannersatall.Intheseoccasions, 　　Iconsiderthattheinfectionofthesemannersarelimited. 　　够了不...也不早点说要回答...