肺循环起始于
A．左心房
B．右心房
C．左心室
D．右心室
E．冠状窦
参考答案：D
解析：肺动脉干起于右心室。
She has ______ that doctor for three months.
A．married to
B．got married to
C．been married with
D．been married to
债权人撤销权由债权人以自己的名义通过诉讼方式行使。（）
