题目

What's sleepwalking(梦游)？Sleepwalking usually happens in the first few hours of sleep. Not all sleepwalkers walk when they are sleeping. Some just sit up or stand on the bed. Some even get up and walk around for a few minutes or half an hour. Some do things as if they were awake, but in fact they are not! Sleepwalkers' eyes are open and they usually go back to beds by themselves. But they won't remember it the next morning. About 15% of kids sleepwalk. Sleepwalking sometimes happens when a person is ill or worried, or doesn't get enough sleep. If sleepwalking happens often, you s张某因参加抢险救灾不幸牺牲，下列选项中不属于其遗产的是A．单位在其死后发给的抚恤金4000元       B．生前所购的股票C．生前承包的土地                        D．生前继承父母的两间房子