Most of the artists ______ to the party were from South Africa.

A．to be invited

B．invited

C．being invited

D．had been invited

消化性溃疡X线检查最具诊断意义的是：()

A．辐射状黏膜

B．痉挛性切迹

C．球部激惹

D．局部压痛

E．龛影