单选题 Before 1500 North America was inhabited by more than 300 cultural groups, each with different customs, social structures, world views, and languages. Such diversity ______ the existence of a single Native American culture.

【正确答案】 D
【答案解析】(argue against驳斥)。句意为:1 500年以前,300多个文化群落在北美定居,每个群落的风俗、社会结构、世界观和语言均不相同,文化的多样性驳斥了北美只存在印第安文化的观点。A.complement补充;B.imply暗示;C.reiterate重复。