Shelly had prepared carefully for her biology examination so that she could be sure of passing it on her

first ______.[ ]

A. attention  

B. purpose  

C. attempt  

D. desire

下列属于全麻过程中并发症的是()

A．喉痉挛

B．头痛

C．肢体感觉障碍

D．血压上升

E．下肢运动障碍