术后常见的血压升高原因有
A.疼痛
B.低氧
C.躁动
D.寒战
E.高CO2血症
参考答案：A, B, C, D, E
0.25g（）
A．成囊材料
B．增塑剂
C．遮光剂
D．防腐剂
E．增稠剂
His grandparents were born in ______ Qing Dynasty, while he was born in ______ 1920’s.
A．a; an
B．/;the
C．the; the
D．a; the
