To compete effectively in international markets, a nation's businesses must sustain investment in intangible aswell as physical assets. Although an enormous pool of investment capital exists in the United States, the country's capital investment practices put United States companies at a competitive disadvantage.
United States capital investment practices, shaped by sporadic and unpredictable changes in tax policy and high federal budget deficits, encourage both underinvestment and overinvestment. For example, United States companies invest at a low rate in internal development projects, such as improving supplier relations, that do not offer immediate profit, and systematically invest at a high rate in external projects, such as corporate takeovers, that yield immediate profit. Also, United States companies make too few linkages among different forms of investments. Such linkages are important because physical assets, such as factories, may not reach their potential level of productivity unless companies make parallel investments in intangible assets such as employee training and product redesign. In general, unlike Japanese and German investment practices, which focus on companies' long-term interests, United States investment practices favor those forms of investment for which financial returns are most readily available. By making minimal investments in intangible assets, United States com- panies reduce their chances for future competitiveness.
The passage is primarily concerned with

文章类型:学术研究
文章套路:观点对比
文章介绍了 Frazier 和 Mosteller 认为医学研究的临床试验需要进行方式转变。后面的文章则解释了他们认为该如何转变,并且他们认为应该转变的理由
题目类型: Main Idea
选项解析:
A、文章提到医学研究的实践是为了展示 Frazier 和 Mosteller 认为应该转变临床方式的理由
B、不仅仅讨论了会提高成本的医学实验,还讨论了如何改进。
C、并不只是在评估现在医学实验实践的缺点
D、正确答案
E、 并不是说当代研究者的研究方式可能发生改变,而是 Frazier 和 Mosteller 提出了改进的方法

