This is the piano on which the composer created some of his greatest works.A. true B. ori

问题补充：

This is the piano on which the composer created some of his greatest works.

A. true

B. original

C. real

D. practical

答案：

A. true

(答案→)B. original

C. real

D. practical

解析： 考查词义辨析。True真实的，original最初的，real真的，practical实用的，句意：这是最初的那架钢琴在那架钢琴上这位作曲家创作了他最伟大的作品。故选B。