男性，43岁。3小时前呕血1次，自觉头晕、乏力、出汗。查体：心率110次／分，四肢湿冷，肝掌，腹壁静脉曲张，超声示腹水。如该患者出现黄疸，其特点是（）。

A.皮肤黄绿色

B.有血红蛋白尿

C.皮肤瘙痒显著

D.血中结合胆红素和非结合胆红素均增高

E.血中肝炎病毒标记物阴性

Our physics teacher and English teacher always give their lessons in a lively and clear way,____ greatly benefits us students.

A．from which

B．in which

C．that

D．which