左心衰发展至全心衰，下列哪项可减轻（）
A.肝肿大压痛
B.心率增快
C.胃肠道淤血
D.肺淤血症状
E.三尖瓣区收缩期杂音
参考答案：D
低温脆性转变温度
At the World Literacy Center, an organization that works to help people read, the helpers work hard, enabling them to successfully reach their goals.
A．assistants
B．volunteers
C．part-timers
D．amateurs
