—Zhang Guorong, a HK pop singer, jumped from the top of a building and killed himself.        

—What a pity! That’s because he had______ living in the world.      [ ]

A. been fed up with  

B. been pleased with  

C. nothing to do with

D. been used to

患者，女，40岁，低热2周，心悸气短、出汗、食欲缺乏，关节痛。查体：面色苍白，肺听诊(-)，心尖部3/6级收缩期吹风样杂音及舒张期隆隆样杂音，肝大，杵状指。应首先做的处理为

A．洋地黄

B．阿司匹林

C．血培养

D．大剂量青霉素

E．观察体温