The doctors say that good diet, exercise and fresh air, all of which the health and long life.
A. lead to
B. refer to
C. stick to
D. contribute to
网友回答
A. lead to
B. refer to
C. stick to
(答案→)D. contribute to
解析：考查动词词组辨析。contribute有助于，贡献；lead to“导致”；refer to“关于，涉及”；stick to“坚持”，根据句意“医生说适当饮食，锻炼及（呼吸）新鲜的空气，所有这些都有助于身体健康和长寿”，可知D最佳。