50. What is the main purpose of this passage?
(A) To contrast phishers and hackers
(B) To outline ways to recognize crooks
(C) To report a phishing scam
(D) To explain what phishing is
(E) To promote online shopping
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統計: A(0), B(13), C(13), D(41), E(1) #1804498
統計: A(0), B(13), C(13), D(41), E(1) #1804498