Our bedrooms are all on the sixth floor,        with its own bathroom.[ ]

A. all            

B. every            

C. either          

D. each

以下为心血管造影剂易误人脊髓致死的药物是

A．碘

B．肌注硫酸镁

C．吩噻嗪类药物

D．普萘洛尔

E．碘油和碘苯酯