单选题 It is undoubtedly tree that lacking of resources is still a problem in this country, as it is in many other developing and even developed countries.

【正确答案】 D
【答案解析】最佳译文。此句结构为“主语+系动词+表语”结构,主语“为形式主语,真正的主语是由that引导的主语从句。句中as引导的不是状语从句,而是一个特殊的定语从句,指代前面整个句子。