---Look, what have you done?

---Sorry. I think if I _____another chance, I’ll do it better.

A．give

B．will be given

C．am given

D．will give

心肌损伤时，心电图的特征性表现是（）

A.ST段弓背形抬高

B.ST段呈抛物线改变

C.ST段下斜形降低

D.ST段水平延长

E.ST-T鱼钩样降低