有以下程序 #include＜iostream＞ #include＜string＞ using namespace std； class base { private： charbaseName[10]； public： base() { strcpy(baseName,"Base")； } virtual char*myName()return baseName; } char *className() { return baseName; } }; class Derived: public base { private: char derivedName[10]; public: Derived() { strcpy(derivedName,"Derived"); } char *myName() { return derivedName; } char *className() { return derivedName; } }; void showPtr(base &p) { cout＜＜p.myName0＜＜" "＜＜p.className(); } int main() { base bb; Derived dd; showPtr(dD) ; retum 0; } 动行后的输出结果为

A．Derived Base

B．Base Base

C．Derived Derived

D．Base Derived

下列哪些特征属于神经衰弱者的表现（）

A.容易疲劳

B.自我压迫

C.睡眠障碍

D.缺乏生活兴趣