以下哪个是腹膜后位器官（）
A.胰腺
B.肝脏
C.小肠
D.胆囊
E.脾脏
参考答案：A
I wonder why Jenny ____ us recently. We should have heard from her by now.
A．hasn’t written
B．doesn’t write
C．won’t write
D．hadn’t written
（）
