Shelley's greatest achievement is his four-act poetic drama（ ）.

Shelley's greatest achievement is his four-act poetic drama（ ）.
A、Prometheus Unbound
B、A Defence of Poetry
C、The Revolt of Islam
D、Adonais
【正确答案】：A
【题目解析】：雪莱最大的成就是他的四幕诗剧《解放了的普罗米修斯》。