【试题链接】 Native American languages are indeed different, so much so in fact that Navajo could be used by the US military as a code (①) during World War II to send secret messages.[2004年翻译]
【试题链接】 But his primary task is not to think about the moral code (②), which governs his activity, any more than a businessman is expected to dedicate his energies to an exploration of rules of conduct in business. [2006年翻译]