If you let challenges and difficulties benefit depress you, much more can be accomplished

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A. more than
(答案→)B. rather than
C. less than
D. other than
解析：考查than固定搭配。More tha超过，不仅仅，非常；rather than代替，而不是；less than少于; other than除…之外；句意：如果你从挑战和困难中获益而不是让挑战和困难让你受损，那么你所获得的要比你想象的更多。故B正确。