更新时间：2018-06-04 15:32作者：李天扬老师
5AccordingtoAnderson,before1970,Americanshadlittleideaabout___
A.thesocialmovement
B.recyclingtechniqueszxxk
C.environmentalproblems
D.theimportanceofEarthDay
6Wheredoesthesupportforenvironmentalprotectionmainlycomefrom?
A.Thegrass–rootslevel
B.Thebusinesscircle
C.Governmentofficials
D.Universityprofessors
7.Whathave\Americansachievedinenvironmentalprotection?
A.Theyhavecutcaremissionstothelowest
B.Theyhavesettledthei