A:--Did your classmate pass the exam?

B: --She failed and is in low spirits.

A:--I'm sorry for her.

B:--____.

A．Thank you

B．You're welcome

C．I would think so

D．Never mind

尿毒症患者高血压最主要的原因是

A．交感神经兴奋

B．水钠潴留

C．肾素增多

D．促红细胞生成素减少

E．血管加压素增多