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回答楼上
文章第一段末句说: 制造业虽然就业比例低但生产率高而服务业正好相反----discrepancy
文章最后一段讲了作者支持的解释budget deficit.大意是:赤字低-->利率低-->投资高-->生产率高,但技术并不缺乏(言下之意投资并不低,生产率应该也高才对呀),注意rather后面,才是真正原因所在:managers in the service sector fail to take advantage of widely available skills and mahines.这里关键是理解这段话,作者并没有否定赤字的解释,本来这一解释同样适应于制造业和服务业,只不过制造业善用资源了而服务业没有,才形成了discrepancy.文章后面继续解释为什么服务业没有这样做.
A. Research shows that the federal budge deficit has traditionally caused service companies to invest less money in research and development of new technologies.
最易混淆的选项A好象将deficit之说weaken了,其实有trick的,看红字部分,并没说deficit是高是低啊.再说,也没有点到结论discrepancy.跟逻辑题貌似而神非的无关选项如出一辙.
E High interest rates tend to slow the growth of manufacturing productivity as much as they slow the growth of service-sector productivity in the United States.
利率高-->生产率低(weaken了deficit的推理关系),而且对制造业和服务业的效果一样.所以,weaken the budget-deficit explanation for the discrepancy mentioned in line 27.
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