左心功能不全时下述哪项改变最迟出现（）
A.右房压增高
B.心排血量下降
C.肺动脉楔压升高
D.肺动脉压升高
E.体循环阻力增高
参考答案：A
回民风味小吃是北京小吃的主体之一。
China has been pushing the reform of public hospitals ____ all its citizens.
A．in charge of
B．for the purpose of
C．in honor of
D．for the benefit of
