53. What is the purpose of this passage?
(A) To point out the challenges of the modern lifestyle.
(B) To discuss how a modern epidemic may spread quickly.
(C) To explore the effects of regular exercise to our body.
(D) To explain the threat to our health from long hours of sitting.
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統計: A(14), B(21), C(16), D(121), E(0) #723135
統計: A(14), B(21), C(16), D(121), E(0) #723135