71 Which of the following would be the most appropriate title for this passage?
(A)How to avoid mass gatherings
(B)Mass gathering: New escape skills
(C)Infectious diseases: New cures found
(D)Health risks in a crowd: Not what you may think
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統計: A(15), B(15), C(20), D(59), E(0) #769517
統計: A(15), B(15), C(20), D(59), E(0) #769517