正确答案: A
题目:A68=year-oldman,withchroniccoughandsputumproductionfor17years,hadfeltaprogressivedyspneaslnce3years.HischestX-rayfilmshowedoverinflationoflungsanddescendeddiaphragms.Theperipheralvasculatureofthelungswasdiminished.Whichdis-easethepatientsufferedfrommostpossibly()
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