中国作为一个发展中的沿海大国，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、China must take exploitation and protection of the ocean for a long-term strategic task before it can achieve the sustainable development of its national economy.
B、China must take exploitation and protection of the ocean as a long-term strategic task before China can achieve the sustainable development of its national economy.
C、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.
D、China must take exploitation and protection of the ocean for a long-term strategic task before China can achieve the sustainable development of its national economy.
【正确答案】：C
【题目解析】：”把..作为...“用take...as...表达；句子的主语已经是China，before引导的从句中的主语为避免重复，可以用it指代。
