避税型证券组合通常投资于（），这种债券免缴联邦税，也常常免缴州税和地方税。
A．市政债券
B．对冲基金
C．共同基金
D．股票
参考答案：A
绑扎钢筋是借助钢筋钩用铁线把各种单根钢筋绑扎成整体骨架或网片。( )
The traffic was entirely, () because of a series of traffic accidents on the road.
A. crippled
B. overthrown
C. disabled
D. insulated
