不能为机体提供能量的营养素是
A.糖类
B.淀粉类
C.蛋白质类
D.维生素类
E.脂肪类
参考答案:D
He became the ________ of criticism by the readers for his newlypublished book.
A.target
B.theme
C.fortune
D.figure
C++源程序中,只有 【12】 个主函数。