题目

Please help Jack ____ his bike. He can't see it. A . finds B . gives C . find D . give 答案：C下列关于糖类的叙述，正确的是（ ）A. 核糖含六个碳原子，属于单糖B. 半乳糖、蔗糖属于二糖C. 糖类是人体的主要能源物质D. 人体过剩的葡萄糖可以转变成淀粉储存于肝脏或肌肉中