Researchers claim to have found the first proof _______ getting a regular eight hours a night really does make you appear healthier and more attractive.

A．as

B．that

C．how

D．which

患儿，4岁。反复水肿5个月，面色萎黄，神疲乏力，肢体水肿，晚间腹胀，纳少便溏。查体：全身水肿呈凹陷性，舌淡苔白滑，脉沉缓。实验室检查：尿蛋白明显增高，血浆蛋白降低，血清胆固醇5.97mmol/L。诊断为肾病综合征，其证型是

A．风水相搏
B．湿热内侵
C．脾虚湿困
D．肝肾阴虚
E．脾肾阳虚