Five workers _____ the mine disaster. After the injured _____ to the hospital, doctors and nurses immediately got down to saving their lives.

A．was survived; rushed

B．survived from; were rushed

C．survived; was rushed

D．survived; were rushed

价值链分析是波特于( )提出的。

A．1984年
B．1985年
C．1986年
D．1987年