以中国为代表的国家属哪种经济体?()

单项选择题The great sea adventure story Moby-Dick is usually considered____________. A. a symbolic voyage of the mind in quest of the truth and knowledge of the universe. B. an adventurous exploration into man’s relationship with nature C. a simple whaling tale or sea adventureD. a symbolic voyage of the mind in quest of the artistic truth and beauty

单项选择题计算机软件系统是由____两部分组成的。