48. What is the best title for this article?
(A) Drug Addictions in America
(B) America’s Opioid Crisis
(C) OxyContin: A Successful Business Story
(D) Physiological Foundation of OxyContin
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統計: A(79), B(389), C(68), D(29), E(0) #2049235
統計: A(79), B(389), C(68), D(29), E(0) #2049235