Manual dexterity may be compromised by arthritis, affecting ability to gasp, manipulate and maneuver objects.
 
【正确答案】 C
【答案解析】dexterity灵巧熟练。skills技巧,技艺。clumsiness笨拙,不灵活。adroitness灵巧,熟练。twitch抽动。