It's our duty to preserve the planet for future（） A: persons B: generations C: characters D: natio

As a result of the First World War settlement the（）was established in 1920. A: League of Nations B: British Commonwealth C: British East India Company D: United Natio

The international body responsible for drafting the convention prohibiting marine pollution (MARPOL) is the（）. A: Maritime Advisory Council B: International Maritime Organization C: International Association of Shipping D: Association of Seafaring Natio