阿摩線上測驗
42. The best __________ in USA is the person who can conduct the shortest possible route travelling to visit several cities in his list exactly once and return to his city of origin.
(A)doctor
(B) educator
(C) master
(D) salesman
答案：登入後查看
統計： A(2), B(21), C(69), D(72), E(0) #1564481
統計： A(2), B(21), C(69), D(72), E(0) #1564481
