表达式x=(3,4);x的值为()。
A.1
B.0
C.4
D.3
参考答案:C
关于主动脉瓣第二听诊区呈递减型叹气样舒张期杂音,错误的是()。
A.可见于风湿性心瓣膜病的主动脉瓣关闭不全
B.可见于先天性心脏病的主动脉瓣关闭不全
C.可见于扩张型心肌病
D.可见于特发性主动脉瓣脱垂
E.可见于马方综合征
—Why _____ Thursday Jim's favorite day?
—Because he has art class. He _____ art. [ ]
A. does; likes
B. is; likes
C. does; is like
D. is; like