in a white uniform, he looks more like a cook than a doctor.
A.DressedB.to dressC.DressingD.Having dressed在线课程A
解析：
考察形容词用法。Be dressed in…穿着…;本题是形容词短语说明he的状态。句意：穿个白色的制服，他看起来与其说像医生不如说像厨师。