问题补充：
Some people say Mozart was the greatest European.
A. violinist
B. composer
C. singer
D. pianist
答案：
A. violinist
(答案→)B. composer
C. singer
D. pianist
解析：composer，为古典音乐家，A violinist 为小提琴手的意思，C singer
为歌手的意思，D pianist为钢琴家的意思。Mozart为古典音乐家的意思。故选答案为B
