阿摩線上測驗
16. Starting next month, a new satellite system will allow air traffic controllers to ________ planes entering their air space in real time.
(A) initiate
(B) intake
(C) track
(D) transcend
答案：登入後查看
統計： A(52), B(47), C(238), D(53), E(0) #2310653
統計： A(52), B(47), C(238), D(53), E(0) #2310653
