The word "interminable" (Line 5, Para. 4) probably means "________."

A．there was no great adverse effect of human activities upon ocean ecosystems
B．no other human activities but navigation caused marine pollution
C．maritime countries still favored the freedom to fish in the open-seas
D．the lack of technology for further exploitation partly prevented marine pollution

A．people were overburdened with work
B．work was virtuous
C．working hours should be shortened while productivity should be increased
D．people should idle away the working hours doing nothing