Analysis of test questions: Heaven has a great responsibility for such people. First of all, we should make his heart ache, make his bones and muscles tired, make him hungry, make his skin thin, make him down and out, and turn things upside down, which is always unsatisfactory. Through these, his heart will be alert, his character will be firm and his talent will increase. This reflects the spirit of self-improvement, and B is correct; ACD doesn't match the meaning of the question.