肺动脉高压和肺静脉高压可同时存在的疾病是下述哪一种()
A.二尖瓣狭窄
B.二尖瓣关闭不全
C.主动脉瓣关闭不全
D.主动脉瓣狭窄
E.三尖瓣关闭不全
参考答案:A
Let’s hold a party to your birthday and at the same time you on your passing the driving test.
A.congratulate; celebrate
B.celebrate; celebrate
C.celebrate; congratulate
D.congratulate; congratulate
最早的电视台的诞生在那一年?