108 Although custom prosthetic bone replacements produced through a new computer-aided design process will cost more than twice as much as ordinary replacements,custom replacements should still be cost-effective.Not only will surgery and recovery time be reduced, but custom replacements should last longer, thereby reducing the need for further hopital stays. Answer is C the degree to which the use of custom replacements is likely to reduce the need for repeat surgery when compared with the use of ordinary replacements. Which 是哪个动词的宾语呢?能不能帮我解释一下?thanks | 
