4、污染Contamination6.Human人类The human raceHumanityHumankind7.Danger危险Peril、Hazard8.In modern society在当今社会In contemporary societyIn present-day societyIn this day and age加分句型一、~~~the+~est+名词+(that)+主词+haveever+seen(known/heard/had/read,etc)~~~themost+形容词+名词+(that)+主词+haveever+s