Although they are twins, one is fond of listening to ______ music while the other is interested in playing ______ piano.
 
【正确答案】 C
【答案解析】 listen to music“听音乐”;play the piano“弹钢琴”,外国乐器前需加定冠词the。本句句意为“虽然他们两个是双胞胎,但是一个喜欢听音乐,一个喜欢弹钢琴”。