She had stomach trouble and had to follow .
A. strict food
B. a strict food
C. strict diet
D. a strict diet
网友回答
A. strict food
B. a strict food
C. strict diet
(答案→)D. a strict diet
解析：考查名词辨析。Food是食物，是一个不可数名词；diet指饮食（与健康方面有关）；句意：她胃不舒服，所以要有一个严格的饮食。故D正确。