引起中心静脉压升高的因素有（）

A.由直立位改为平卧位

B.骨骼肌的活动减少

C.容量血管收缩

D.输血或输液过多、过快

E.右心室射血功能减弱

.Most of the students in our class like to read China Daily, which_______ every day.

A．comes out

B．comes up

C．comes across

D．comes about