室间隔缺损的直接征象是（）
A.室间隔穿隔血流
B.左室肥大
C.右室肥大
D.肺动脉高压
E.左、右心室容量负荷过重
参考答案：A
Underground railway is being built in Shenyang. We are sure to take the subway to ______ in the city in no time.
A．get through
B．get around
C．get together
D．get over
下列哪一项属于甲类传染病（）
A、肺结核和鼠疫
B、鼠疫和霍乱
C、甲型H1N1流感和鼠疫
D、麻疹和肺结核
