单选题 My grandfather is as ______ as a young man and hates sitting around doing nothing all day.
【正确答案】 B
【答案解析】[解析] 考查形容词辨析。句意为“我爷爷像年轻人一样______,他很讨厌一整天坐在那什么都不做”。enthusiastic“热心的,热情洋溢的”,energetic“精力充沛的”,talkative“多话的,多嘴的”,sensitive“敏感的,通过”。根据句意可推断,爷爷是跟年轻人一样精力充沛,故选B。