房间隔缺损患者胸部X线检查可有哪些发现（）。
A.右房增大
B.右室增大
C.左室增大
D.肺动脉段突出
E.肺血管影增加
参考答案：A, B, D, E
It was at the airport _____ was completed last year _____ he worked as a volunteer helping foreigners in need of translation service.
A．which; where
B．that; where
C．which; that
D．where; what
本土化有何特点？
