【名词&注释】
胰岛素(insulin)、口服降糖药(oral hypoglycemic agents)、正常糖耐量(normal glucose tolerance)、食欲不振(loss of appetite)
[单选题]正常糖耐量是指()
A. FPG正常;2hPG<7.8mmol/L
B. FPG<7.0mmol/L;2hPG;7.8mmol/L
C. FPG≥8mmol/L;2hPG<9mmol/L
D. FPG正常;2hPG<8mmol/L
E. FPG正常;1hPG<7.8mmol/L