The aim of basketball is for players to get a ball into the “basket”: a net ____ from a metal circle.

A．hanged

B．hanging

C．to hang

D．being hung

食管癌中晚期的典型症状是（）

A．胸骨后烧灼感

B．食管内异物感

C．咽下食物哽噎感

D．咽下食物停滞感

E．进行性咽下困难