____ the telephone number several times, but he couldn't learn it by heart. [ ]

A. Having told                    

B. Having been told

C. Although he had been told        

D. He had been told

下列高血压的康复，错误的是（）

A.强调小肌群的静力性运动

B.轻症患者可以运动治疗为主

C.适当的运动治疗可以减少药物用量

D.Ⅱ级以上患者应在降压药基础上进行运动治疗

E.一定范围内的中小强度抗阻运动可产生良好的降压作用