You need to take your job________if you want to keep it.

A．curiously

B．seriously

C．nervously

D．Humorously

下列哪项不是法洛四联症的主要临床表现（）

A.顽固性心力衰竭

B.杵状指

C.脑缺氧发作

D.蹲踞动作

E.青紫