机体的免疫自稳功能紊乱时易患（）

A.移植物排斥反应

B.免疫缺陷病

C.超敏反应性疾病

D.恶性肿瘤

E.自身免疫性疾病

有以下程序 #include ＜iostream＞ #include ＜string＞ using namespace std; class base { private:char baseName[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.myName()＜＜" "＜＜p.className(); } int main() { base bb; Derived dd; showPtr(dd); return 0; } 运行后的输出结果为

A．Derived Base

B．Base Base

C．Derived Derived

D．Base Derived