A.四個(gè)階段:包括把環(huán)境問(wèn)題作為技術(shù)問(wèn)題階段、把環(huán)境問(wèn)題作為經(jīng)濟(jì)問(wèn)題階段、把環(huán)境問(wèn)題作為社會(huì)問(wèn)題階段、把環(huán)境問(wèn)題作為人類文明演替推動(dòng)力階段
B.三個(gè)階段:包括把環(huán)境問(wèn)題作為技術(shù)問(wèn)題階段、把環(huán)境問(wèn)題作為經(jīng)濟(jì)問(wèn)題階段、把環(huán)境問(wèn)題作為社會(huì)問(wèn)題階段;
C.二個(gè)階段:包括把環(huán)境問(wèn)題作為技術(shù)問(wèn)題階段、把環(huán)境問(wèn)題作為人類文明演替推動(dòng)力階段
D.一個(gè)階段:把環(huán)境問(wèn)題作為技術(shù)問(wèn)題階段