35．With exports _______ an important role in its economic growth now, this province has been affected by the global economic downturn．

A．played

B．to play

C．playing

D．Play

二尖瓣狭窄超声心动图表现为（）

A.左心房、右心房扩大

B.左心房、右心室扩大

C.右心房、右心室扩大

D.左心房、左心室扩大

E.左心室、右心室扩大