People who don't regularly drink caffeine tend to be more ______ to its negative effects.
【正确答案】 D
【答案解析】不经常喝咖啡因的人对其负作用更为敏感。A.sensible“明智的,合情理的” B.sensational“轰动的,耸人听闻的”C.sentimental“感伤的,多愁善感的”D.sensitive“敏感的”,其后接to