Listening to peaceful music.  as well as taking exercise,___________ a lot in relieving people 's sad emotions.

A．help

B．helped

C．helps

D．are helping

如需作出病因诊断，应进行下述哪项辅助检查

A．颅脑CT增强扫描
B．颅脑MRI检查
C．脑电图检查
D．SPECT检查
E．脑血管造影