Detective Lu thought that ________ Xie Yiming ________ Wang Gang were likely to kidnap Guan Fei, Guan Dawei’s son.

A．either, or

B．both, and

C．neither, nor

D．not only, but also.

某患者，右额部受伤后出现右眼上睑下垂，眼球运动受限，视力下降不明显。

可做下列哪项检查帮助诊断()

A．X线摄片

B．B超

C．血管造影

D．视野检查

E．电生理