中国作为一个有着很长海岸线的发展中国家，国民经济要持续发展，必须把海洋的开发和保护作为一项长期的战略任务。

中国作为一个有着很长海岸线的发展中国家，国民经济要持续发展，必须把海洋的开发和保护作为一项长期的战略任务。
A、As a developing country with a long coastline， China must take exploitation and protection of the ocean as a long-term strategic task before it can achieve the sustainable development of its national economy.
B、As a developing country with a long coastline， China must make exploitation and protection of the ocean as a long-term strategic task before it can achieve the sustainable development of its national economy.
C、China is a developing country with a long coastline， must make exploitation and protection of the ocean as a long-term strategic task before it can achieve the sustainable development of its national economy.
D、China must take exploitation and protection of the ocean as a long-term strategic task before it can achieve the sustainable development of its national economy， as a developing country with a long coastline.
正确答案：A