Britain’s first and only female prime minister , Margaret Thatcher, died on April 8 at the age of 87, after suffering a stroke (中风), _______ has aroused a flood of comments about her political life again.

A．which

B．what

C．it

D．that

对于肺源性心脏病的X线所见，下述描述不正确的是

A．主要表现为肺动脉高压和右心增大的征象

B．右下肺动脉干增粗，横径15mm

C．右下肺动脉干横径与气管横径比＞1.07

D．心脏向左下扩大