Poor health does not rule out happiness except for the or those in pain.A. severely weak

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A. severely weakening
B. having severely weakened
(答案→)C. severely weakened
D. being severely weakened
解析：句意：健康状况不佳不排除幸福除了严重的削弱或承受巨大的痛苦。这里使用了the+过去分词，表示“被削弱的健康”，副词severely修饰过去分词放在前面，选C。