People often make a mistake about my nationality.  I was born of Chinese parents , _____, I look ______ but I was born and grew up in America, so I am an American.

A．however; Chinese

B．therefore; Chinese

C．so; the Chinese

D．therefore; a Chinese

DSA的中文全称叫做（）

A.数字减影成像

B.数字血管成像

C.数字减影血管造影

D.数字造影血管减影

E.数字血管断层成像