Even after Wal-Mart made Sam Walton extremely wealthy, he still led a very thrifty life and asked his employees to follow suit.
A.Y
B.N
C.NG

A.A.Y
B.N

【参考答案】

A
解析：第1个小标题History of Wal-Mart部分的第3段第1、2句：Walton continu......

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