【正确答案】 B

【答案解析】[解析] 画线词seldom为副词，意为“很少，不经常”。A项crudely意为“粗糙地，天然地；不成熟地”；例：This is a crudely carved wooden form.这是一件粗糙的木雕。B项rarely意为“很少地；罕有地”；例：We rarely see someone go after the health area.我们很少见到有人在健康领域做文章。C项originally意为“最初，起初，本来”；例：Where are you from originally?你最初是哪里人?D项occasionally意为“偶尔，间或”；例：I"ve had mild headaches occasionally.我偶尔有轻微头疼。故选B。