同意一楼的解释,我查了一下,vehicle在字典里有“为展露演员才华)特意编写的戏剧(或电影、音乐作品等)”之意~韦氏字典:3 : a medium through which something is expressed, achieved, or displayed *an investment vehicle*; especially : a work created especially to display the talents of a particular performer
话说ETS出题很细致哪~:p~ls各位的解题思路也好清晰~见识了~