Even though the costs of paying baseball players amounts to a sum greater than one half of the overall cost of operating a Major League Baseball team last year, Major League Baseball franchise owners were still willing to pay increasingly higher salaries to top players.
| | amounts to a sum greater | | | amounts to more | | | amounted to more | | | amounted to a greater sum | | | amounted to greater | 答案:C
比较amount的时候要用greater,是要很明确的指出是比较amount吗?因为感觉这里the costs of...也很明确的指出了是要比较amount呀
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