男性，70岁。因便血及大便习惯改变3个月入院。临床诊断为直肠癌，准备手术治疗。心电图

《素问·平人气象论》指出虚里是（）

A.脾之大络

B.心之大络

C.肺之大络

D.肝之大络

E.胃之大络

Quzhou is a beautiful city. Every year there are __________ tourists.

A．thousands

B．thousands of

C．thousand

D．thousand of

He old woman had a letter from her son in the army_____ to her.

A．read

B．write

C．written

D．received

凝结器也具有除氧效果。

递接物品时应该要用左手递接。