二尖瓣型P波伴右室肥大心电图改变最常见于（）
A.二尖瓣狭窄
B.二尖瓣关闭不全
C.高血压心脏病
D.冠心病
E.肺心病
参考答案：A
Her sister has become a lawyer, ____ she wanted to be. [ ]
A. who
B. that
C. what
D. which
随诊开展较好的医院，随诊率一般不低于：（）
A.50%
B.60%
C.70%
D.85%
E.95%
