阿摩線上測驗
18. Using bicycles instead of cars can greatly reduce one’s carbon _____.
(A) shadow
(B) record
(C) fingerprint
(D) footprint
答案：登入後查看
統計： A(0), B(6), C(4), D(109), E(0) #3493861
統計： A(0), B(6), C(4), D(109), E(0) #3493861
