单选题 The theory was attacked ten years ago when it was first proposed, but gradually it was accepted _____.无
【正确答案】 C
【答案解析】句意: 该理论十年前初次被提出时受到抨击, 但渐渐地被人们接受了。 advance意为“推进; 提出” , advance a theory“提出一种理论” 。 promote提升; 增进。 enhance提高, 增强。 conceive构想; 怀胎。