1c (Sự thực hiện việc kinh doanh thành công)
2a (less-than-stellar= only avarage standard: tầm thường)
3d (Thông tin trong đoạn: Smith achieved efficiency in his model by designing a system that was separate from the passenger system and could, therefore, focus on how to deliver packages most efficiently)
4d 
5b(Thông tin trong đoạn: With this combination of his own planes and hub set-up, he could get packages anywhere in the United States overnight
6c
7a
8c
9b
10d