二尖瓣开瓣音可出现于()
A.二尖瓣关闭不全
B.左心房黏液瘤
C.二尖瓣狭窄
D.缩窄性心包炎
E.二尖瓣脱垂
参考答案:C
— Why are you unhappy, Ben?
— I was late for class again. I'm afraid Miss Li will be me. [ ]
A. friendly to
B. angry with
C. busy with
D. proud of
“健康的金钥匙就掌握在你手中,一分呵护,一分平安”属宣传技巧方法的()
A.美化法
B.号召法
C.假借法
D.隐喻法
E.加以倾向性法