--__________?

--It depends on what it is.

A．Will you buy me some stamps

B．Would you please do me a favour

C．How about going shopping with me

D．Remember me to your family, will you

下列有关我国高血压的流行病学特点的描述正确的是

A．北方患病率低于南方

B．东部患病率低于西部

C．城市患病率低于农村

D．男性患病率低于女性

E．高血压患者中约半数以上是收缩期高血压