A patient who is admitted for treatment of an eating disorder displays controlling behaviors, takes responsibility for others' actions, and has difficulty identifying feelings. These manifestations suggest

A．dependency.

B．manipulation.

C．learned helplessness.

D．codependency.

关于缩血管神经纤维的叙述，错误的是（）

A.都属于交感神经纤维

B.去甲肾上腺素与α肾上腺素能受体结合，可导致血管平滑肌收缩

C.去甲肾上腺素与β肾上腺素能受体结合，可导致血管平滑肌舒张

D.兴奋时，引起缩血管效应

E.体内几乎所有的血管都受交感缩血管纤维和副交感舒血管纤维双重支配