沙参麦冬汤的功用是（）

A．辛寒清气泻火 

B．苦寒直折火热 

C．甘寒清热育阴 

D．甘温益气除热 

E．辛凉解表透热

The old man lives         at home but he never feels _________.

A．alone; lonely

B．lonely; lonely

C．lonely; alone

D．alone; alone