与肺循环无关的部分是（）
A.右心房
B.左心房
C.右心室
D.肺静脉
E.肺动脉
参考答案：A
— Who is the man talking to our teacher?
— A professor _____ a visit to our school. [ ]
A. pays
B. paying
C. is paying
D. has paid
( )是指暗示刺激发出后，引起被暗示者相反的反应。
A．反暗示
B．反模仿
C．逆反
D．真暗示
