红蜘蛛的虫态有()、()、()和()。
参考答案:卵;幼虫;若虫;成虫
A good many tourists, ________with the natural beauty, forgot their time to return.[ ]
A. impressing
B. impressed
C. was impressed
D. being impressed
男性,71岁。右上腹不适,纳差,消瘦3个月。近3天皮肤瘙痒,尿黄、粪便陶土色。查体:消瘦,皮肤暗黄。腹部超声示肝内胆管结石。本病例发生黄疸的原因是()
A.溶血性黄疸
B.肝细胞性黄疸
C.胆汁淤积性黄疸
D.先天性非溶血性黄疸
E.药物性黄疸