题目内容:
Accordingtothepassage,whichaspectofskyscraperswassomeresidentsofBostoncon-ceruedwithinthelate1960s?
A.ThepoorreceptionofradioandTVsignals B.Theremovaloftreesandgrassfrombuildingsites
C.Theharmfuleffectsonthecity'splants
D.Theobstructionofairtraffic
参考答案:
答案解析: