I think you should go back to your plan, which is much more practical than the present one

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A. opposite
(答案→)B. original
C. abstract
D. ridiculous
解析： 此题答案错误，考查词义辨析，opposite相反的，original原始的，最初的，abstract抽象的，，ridiculous荒谬的，句意：我认为你应该回到你最初的计划，比现在这个更实用的多。故选B。