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.when B.before C.after D.since 答案：【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。He is a ______ boy.A．ten-years-oldB．ten-year-oldC．ten years oldD．ten year old