菜鸟求助~OG101题

flylele

101. Even though the direct costs of malpractice disputes amounts to a sum lower than one 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.
(A)    amounts to a sum lower
(B)    amounts to less
(C)    amounted to less
(D)    amounted to lower
(E)    amounted to a lower sum

答案C和D 有什么本质区别啊？ OG的解说LESS是名词 LOWER是形容词 ，amount to 应该加名词 所以选C
觉得不怎么信服。。。恳求大牛指点啊

flylele

自己先顶了 请大家帮帮我吧

iceberg07

比数量多少当然用LESS THAN了

flylele

请问 costs 是可以用little（less）修饰的吗？ 总觉得有costs high (low)的说法。。。 请教啦~~~