单项选择题
A.8~10 B.11~12.5 C.13~16 D.18~20 E.20~25
A.30%~40%,10%~15% B.45%~50%,15%~20% C.50%~60%,20%~25% D.60%~70%,25%~30% E.80%~90%,25%~30%
A.维生素C B.钙 C.草酸 D.膳食纤维 E.铜