The traffic problems we are looking forward to ______ solved should have attracted the government’s attention.

A．see

B．seen

C．be seen

D．seeing

设备、工器具的租赁或购买，一般来说，从经济意义上讲优越性较多的方案是( )。

A．贷款购买

B．自有资金购买

C．租赁

D．自行制造