Let's _________ TV. [ ]
A. look
B. look at
C. see
D. watch
答案:D
动脉粥样硬化时,动脉内膜的早期病变是()
A.内膜脂斑,脂纹
B.粥肿
C.纤维斑块
D.粥样斑块
E.溃疡形成
试述行剖宫产术的指征?