24.This company provides a very good _______ service for its products.

问题描述:

24.This company provides a very good _______ service for its products.
A.maintenance B.merit C.philosophy D.pigeon
选A,分别解释一下各个词的意思,

maintenance 维护,保持,维修,生活费用
merit 功绩,价值,真相
philosophy哲学,哲理
pigeon鸽子