Even though the direct costs of malpractice diputes amounts of a sum lower than 1 percent of the $541 billion the nation spent on health care last year, doctors say fear of lawsuits plays a major role in health-care inflation.

C. amounted to less

D. amounted to lower

og解释是：The sentence does reqiure a noun (less), not an adjective (lower), as the object of the preposition to.

请问less和lower的区别都是依据这个判断么？在意思上如何区别？

以上是前人的解释。

本人觉得og说less是名词显然是错的。less than 1 percent of结构，less做形容词，percent是名词，less修饰percent。

此外，不同意三楼的解释。

og11-100t

Bihar is India's poorest state, with an annual per capita income of $111, lower than in the most impoverished countries of the world.

B. lower than that of

这里的lower就是修饰的income,income不是高度长度。我认为这纯属是修饰习惯的问题。

此外，不同意三楼的解释。

og11-100t

Bihar is India's poorest state, with an annual per capita income of $111, lower than in the most impoverished countries of the world.

B. lower than that of

这里的lower就是修饰的income,income不是高度长度。我认为这纯属是修饰习惯的问题。

costs less than 1% of ...

$111 lower than ...

amount to后面只能接名词的...fewer只是个adj

只有less还有名词的用法啦