48. According to the passage, what is the leading cause of cancer-related deaths?
(A) COPD
(B) Asthma
(C) Lung cancer
(D) Pulmonary fibrosis
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統計: A(26), B(0), C(181), D(0), E(0) #3223568
統計: A(26), B(0), C(181), D(0), E(0) #3223568