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(A) They are a phenomenal channel but a tough customer.
(B) That is why Wal-Mart is one of the best laptop manufacturers.
(C) That is how Wal-Mart became the world’s biggest retailer.
(D) That is how Wal-Mart became one of the world’s most controversial companies.

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統計： A(0), B(2), C(4), D(0), E(0) #2724661