[解析]
(1)E联系下文题.根据横线后一句Obviously,the first factor is its ability to produce wealth.可知第一个因素是生产财富的能力.说明横线句在询问影响一个国家生活标准的因素是什么.所以才有后句的回答.故选E.
(2)F上下文串联.根据横线前句Wealth depends greatly on a country's natural resources.可知财富很大程度上依靠一个国家的自然资源.接下来介绍自然资源的内容.故F项"They include coal,oil,gas,gold,other minerals,water supply and so on.他们包括煤炭,石油、天然气…"符合上下文串联.故选F.
(3)B联系上文题.根据前句The USA has everything listed above.可知美国拥有上文列出的所有资源,那么美国的富有就是很自然的事情.故B项"No wonder it is one of the wealthiest regions of the world."符合上下文串联.故选B.
(4)D理解判断题.根据横线后句As we see,old countries that have trained so many skilled workers over centimes are better at producing wealth than those whose workers are mainly unskilled.可知那些拥有熟练工人的国家要比技术工人不过硬的国家要更加富有.这说明技术的效率也是影响一个国家人们生活水平的重要原因.故D项符合上下文串联.故选D.
(5)A总结归纳题.随着财富的积累,人们有了更多的积累的资金,然后在把积累的资金投入到工厂和机器上,又生产出更多的商品来.让资金循环利用,让财富衍生出财富.故A项符合上下文串联.故选A.