While he was investigating ways to improve the telescope, Newton made      discovery which completely

changed          man's understanding of color.[ ]

A. a; /              

B. a; the            

C. /; the          

D. the; a

该患者黄疸的原因是

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