60. The passage is meant to _____.
(A) justify paying for faster services
(B) discuss the morals of allocating things
(C) analyze the reason for standing in line
(D) criticize the behavior of queue jumping
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統計: A(0), B(1), C(0), D(0), E(0) #495124
統計: A(0), B(1), C(0), D(0), E(0) #495124