【题目】Unfortunately, Puccini died of a heart attack ______ he completed this final scene, and it had to be completed by one of his former students, Franco Alfano.
A.whenB.beforeC.afterD.since
在线课程【答案】B
【解析】
考查状语从句连接词辨析。句意：不幸的是，普契尼没来得及完成最后一幕就死于心脏病，只得由他以前的一个学生法兰高.阿法奴完成。when当……时；before在……之前；after在……之后；since自从，既然。普契尼是在完成最后一幕剧之前去世了，所以只得由他人完成。before符合题意。故选B项。