Unlike many other boys of his age who are often addicted to PC games, he is _______ on outdoor activities in the mountainsA.eagerB.starvingC.keenD.fond
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C解析试题分析：考查形容词的区分。句义：不像许多沉溺于网络游戏的他这个年龄段的孩子，他喜爱爬山。把握关键词：on 构成短语：be keen on 喜爱，而be eager to do 渴望做某事，be starving to do 渴望做某事，be fond of 喜欢，所以C正确。考点：考查形容词的区分