I have _____ an eye _____ you now, so you do as you _____!

A．left; over; have to

B．to keep; on; were told

C．kept; down; have been told

D．kept; on; are told

下列临床表现对肺动脉口狭窄的诊断有帮助除外

A．心电图电轴右偏

B．右心室肥厚

C．右心室肺动脉压力阶差大小40mmHg

D．左心室肥大

E．肺动脉段突出