The prospect of becoming a permanent net importer worries some officials, who are concerned about growing more dependent on foreigners when oil imports are rising rapidly.

• 中国可能长期成为煤炭净进口国,这一前景令一些官员感到担忧。他们担心,在石油进口迅速增长之际,中国又成为煤炭净进口国,将导致中国对外国的依赖程度不断加深。