【正确答案】正确答案： China is a multi-national country featuring unbalanced economic development. In the vast territory, different languages and various dialects are used. Even though the government has called for the popularization of Mandarin as the standard Chinese language for decades, it has not become the daily-use communication tool among a considerable number of people. This obviously hinders economic development and social progress. Undoubtedly,the popularization and promotion of Mandarin is vital to speeding up China's reform and opening up drive.

【答案解析】解析：1．第一句中，“具有……的特点”可以处理为“国家”的后置定语，即译为featuring…。 2．第二句中，“辽阔的土地”可译为the vast territory。 3．第三句中，出现了两次“普通话”，翻译为英文时，第二个“普通话”应该用it来代替，这样才符合英语的特点。 4．最后一句中，“毫无疑问”有多种译法，可以译为副词，即Undoubtedly；还可以译为插入语no doubt，即thepopularization and promotion of Mandarin，no doubt，is vital to…，使句式多样化；还可以译为句子，即Thereis no doubt that…。