According to paragraph 1, the environmental goals set by green builders were initially considered unrealistic presumably because ______.
A.there was a lack of green builders at the beginning of the 20th century
B.the potential applications of technology to constructing green buildings were not recognised then
C.the problems of environment destruction were not prevalent at the time
D.there was an abundance of natural materials for the construction of conventional buildings
A.there was a lack of green builders at the beginning of the 20th century
B.the potential applications of technology to constructing green buildings were not recognised then
C.the problems of environment destruction were not prevalent at the time
D.there was an abundance of natural materials for the construction of conventional buildings
Loga
Hóa Học lớp 12
