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1. Even though the direct costs ofmalpractice disputes amounts to a sum lower than one percent of the $541 billion the nationspent on health care last year, doctors say fear of lawsuits plays major rolein health-care inflation. (A) amounts to asum lower (B) amounts toless (C)amounted to less (D) amounted to lower(C) (E) amounted to alower sum
答案是C,不明白?这里比较不是costs吗,为什么用less,less是不可数名词的比较级吧?
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