单选题 Romantic novels, as opposed to realistic ones, tend to present idealized versions of life, often with a happy ending.

【正确答案】 B
【答案解析】[解析] 本题的四个选项都是介词短语。B项的意思是“与……相反的”,与“as opposed to完全不同,反对”的意思相吻合。A项“关于,至于”;C项“依据,按照”;D项“按照,根据”都与题干中的词义不符。