In all kinds of petitions, Jackie a most excellent athlete. He has won so many gold medals.
A. practises
B. conducts
C. behaves
D. proves
网友回答
A. practises
B. conducts
C. behaves
(答案→)D. proves
解析：考查动词辨析。句意“在各种比赛中，Jackie证明是一个非常出色的运动员。他已经获得了很多金牌。”A“练习”；B“引导，表现”；C“表现”；D“证明（是）”。故选D。