A:肺泡周围的毛细血管网
B:左心室到主动脉
C:组织细胞周围的毛细血管网
D:右心房到右心室
—Yuzuru Hanyu from Japan won the first gold medal at Pyeongchang Olympics on Saturday in men's single figure skating, Jin Boyang set Chinas best result in the event as the fourth finisher.