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
詳解 (共 2 筆)
未解鎖
在美國最好的__________是一個人...
未解鎖
The best salesman in...
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