简述《三国演义》中的一个令你难忘的情景。

A. 右心室流出道狭窄
B. 肺动脉瓣狭窄
C. 肺动脉主干狭窄
D. 包括以上三项
E. 肺动脉瓣赘生物形成

A. of their radical political views
B. they were guilty of killing two people
C. they were members of KKK
D. they stole$16,000

A. 牙源性
B. 血源性
C. 损伤性
D. 腺源性
E. 医源性