红细胞代谢能源主要来自（）
A.蛋白质代谢
B.血脂
C.糖酵解产生ATP
D.血糖
E.以上都是
参考答案：C
医疗保险中的待遇水平由三方面体现，即起付线、封顶线和报销比例。（）
—I regretted what I have done.
—_______ gone is gone. ______ no use regretting it any more.[ ]
A. What's; That's
B. It's; That's
C. What's; It's
D. That's It's
