—Health goes ahead of everything.
—Yes. Keeping balanced diet is good for health.
A. the; /
B. a; the
C. the; the
D. a; /
网友回答
A. the; /
B. a; the
C. the; the
(答案→)D. a; /
解析：句意：保持均衡饮食有益健康。第一空keep a balanced diet是固定短语，第二空为泛指健康，health是不可数名词，不加冠词，故D正确。