Public attention at the moment is ______ on the problem of how to create

opportunities for the laid-off workers.

A．focused

B．paid

C．attracted

D．concerned

瓶颈产业往往属于( )，是“上游产业”，制约其他产业发展，受其他产业的影响小。

A．重点产业

B．基础产业

C．主导产业

D．先导产业