下列物质不属于六大营养素的是( )
A.维生素
B.蛋白质
C.水
D.氧气
人体内的六大营养素包括蛋白质、油脂、糖类、维生素、水、无机盐,上述物质中的氧气不属于六大营养素.
故选D.
—To keep healthy, you'd better eat more vegetables and fruits every day.
—Thanks for your advice. I'll have more _________. [ ]
A. cakes
B. eggs
C. apples
D. candies
国家对卷烟、雪茄烟焦油含量和用于卷烟、雪茄烟的全部添加剂实行控制。