A survey of the opinions of experts    that three hours of outdoor exercise a week    good for one’s health.

A．show; are

B．shows; is

C．show; is

D．shows; are

患者入院后除脱水、止血等治疗外，还应进行何种重要检查

A．MRI

B．脑血管造影

C．脑电图

D．CTA

E．MRA