So engrossed in his efforts would Gaugin become that he barely noticed the passing of time.

A．delighted in

B．frustrated by

C．expanded by

D．involved in

心力衰竭的基本病因之一是

A．大量饮酒
B．长期吸烟
C．长期卧床休息
D．长期情绪紧张
E．心脏长期负荷过重