单选题 I tried to talk my daughter into dining out in a nearby restaurant that evening, but in vain.
A. to my surprise B. on her own
C. to no effect D. to some extent

【正确答案】 C
【答案解析】in vain:无效果,徒劳,白费力气;to my surprise:使我惊讶的是;on her own:独立地,独自地;to no effect:没有任何效果;to some extent:某种程度上