肿瘤干细胞
参考答案：
肿瘤中具有自我更新能力并能产生异质性肿瘤细胞的细胞。
下列关于模板的叙述中，错误的是( )。
A．模板声明中的第一个符号总是关键字template
B．在模板声明中用＜和＞括起来的部分是模板的形参表
C．类模板不能有数据成员
D．在一定条件下函数模板的实参可以省略
A．Educating their workers about the importance of staying home when sick.
B．Letting people telecommute so that they can stay at home.
C．Announcing disciplinary measures against those working when sick.
D．Fostering an environment to encourage and paying sick employees to stay home.
