For fear of unemployment, almost one million people sat （参加考试）China civil service examination in order to get  ________jobs.

A．appropriate

B．bureaucratic

C．comfortable

D．secure

胸腺瘤好发部位是

A．前上纵隔

B．前下纵隔

C．后上纵隔

D．后下纵隔

E．中纵隔(内脏器官纵隔)