A considerable amount of time and money has been invested in______ this system.

游客2025-04-04  0

问题 A considerable amount of time and money has been invested in______ this system. (2003年上海交通大学考博试题)

选项 A、defining
B、implying
C、reducing
D、perfecting

答案 D

解析 本题空格处是说“完善这个系统”。D项“perfecting完善”符合题意,如:They worked hard to perfect their dance.(他们卖力地使舞蹈更加完美。)其他三项“defining定义;implying暗示;reducing减少”都不正确。
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