Shanghai, China’s biggest and the most dynamic city, which______ in the Yangtze River Delta, is playing a leading role in the country’s economy.

A．is situated

B．situated

C．has situated

D．is situating

下列高血压患者有氧训练的要点中，错误的是（）

A.动力性运动

B.较高运动强度

C.较长运动时间

D.大肌群运动

E.节律性运动