阿摩線上測驗
7. _____ are unmanned flying vehicles. They are now a favorite tool for pranksters
and troublemakers.
(A) Drones
(B) Debris
(C) Barrels
(D) Benchmarks
答案：登入後查看
統計： A(205), B(45), C(13), D(18), E(0) #1821497
統計： A(205), B(45), C(13), D(18), E(0) #1821497
