从超声横切面观察，胰腺的形态最常见的是（）
A.蝌蚪形
B.哑铃形
C.腊肠形
D.马蹄形
E.环形
参考答案：A
“Is there _____ here?”“No, Bob and Tim have asked for leave.”
A．anybody
B．everybody
C．somebody
D．nobody
