凸阵扫描探头，临床常用于何部位的检查
A．腹部
B． * *
C．睾丸
D．甲状腺
E．头颅
参考答案：A
The teacher set such difficult problems ______ nobody could work out _____ none of us passed the test.
A．as; that
B．that; as
C．/; that
D．as; as
哪种心律失常不需紧急处理( )。
A．Ⅰ度房室传导阻滞 B．室性早搏R落在T上 C．室性早搏呈联律出现D．短阵室性心动过速 E．心室颤动
