胰岛素抵抗的标准是每日胰岛素需要量超过（）
A.50U
B.60U
C.150U
D.200U
E.300U
参考答案：D
— It's ______ that you are tired. You should have a rest.
— Thanks, maybe you are right.
[ ]
A. evident
B. easy
C. simple
D. usual
导语
