You can change your job, you can move your house, but friendship is meant      life.

A．of

B．on

C．to

D．for

CT诊断肺隔离症最有价值的征象是

A．下叶后段不规则病灶，有分叶

B．下叶后段类圆形病灶，病灶内有囊变

C．下叶后段类圆形病灶，可见体循环供血

D．下叶后段类圆形病灶，可见肺循环供血

E．下叶后段不规则病灶，强化明显