单项选择题
A．was a sign that someone had broken into Stoll' s system B．would cause serious health problems C．would make Stoll a very rich man D．was found out by a Berkeley student
A．can not be solved because situation is very cruel B．can be solved because twins will be separated C．can not be solved unless the twins are forced to live in an ordinary environment D．can be solved if the adults communicate with them more often
A．twins can help each other B．twins share each other's emotion C．twins are able to understand each other in a private language D．twins communicate less with their parents