能够影响视觉诱发电位的因素是（）
A.年龄
B.性别
C.高血压
D.缺血性心脏病
E.缺血性视神经病
参考答案：E
CT检查前病人准备的叙述，错误的是（）
A.去除被检部位的金属物品
B.胸腹部检查病人作必要的呼吸训练
C.增强检查病人应询问有无药物过敏史
D.做腹部检查病人事先口服对比剂准备
E.盆腔扫描检查病人无需事先口服对比剂准备
The old mother was ______to see his long lost son home. [ ]
A. a little more than happy
B. more than a little happy
C. happy more than a little
D. a little more happy than
