受胁迫、欺骗所立的遗嘱（）。
A.可撤销
B.效力待定
C.有效
D.无效
参考答案：D
He didn't put the things ____ they belonged, for ____ reason he got his punishment.[ ]
A. which; that
B. what; that
C. that; whose
D. where; which
下列哪种交换方法使用了虚电路？（）
A、报文分组交换
B、报文交换
C、电路交换
D、各种方法都一样
