【名词&注释】
氨基酸(amino acid)、六味地黄丸、不同点(different grounds)、春秋战国(spring and autumn warring states)、碱基置换(base substitution)、中医理论体系(chinese medical theoretical system)、滋补肾阳(invigorate the kidney-yang)
[单选题]六味地黄丸的功用是( )
A. 滋补肾阳(invigorate the kidney-yang)
B. 滋补肾阴
C. 补益肾气
D. 补养气血
E. 益肾健脾