【单选题】扩展基础的基础混凝土强度等级不宜低于( )。
【简答题】If you are planning to spend your holidays in Yellowstone National Park in summer, what should you take with you?
【单选题】下列虚基类的声明中正确的是( )。
A.
class virtual B:public A
B.
virtual class B:public A
C.
class B:public A virtual
D.
class B:virtual public A
【单选题】扩展基础的混凝土强度等级不宜低于( )。
【单选题】The world's first national park, Yellowstone National Park , was established in Wyoming in 12 to protect an area of ______ natural beauty.
【单选题】Yellowstone National Park is (one of) the (older parks) in the United States. It was (established) by Congress (in) 1872.
【单选题】对于类定义: class A{ public: virtual void funcl(){} void func2(){} ); class B:public A{ public: voidfuncl(){cout<<“class Bfunc 1”<<endl;} virtual void func2(){cout<<“class B func 2”<<endl;} }; 下面正确的叙述是( )。
A.
A::func2()和B::funcl()都是虚函数
B.
A::func2()和B::funcl()都不是虚函数
C.
B::funcl()是虚函数,而A::func2()不是虚函数
D.
B::funcl()不是虚函数,而A::func2()是虚函数
【单选题】Why does the professor think Ann would be interested in going to Yellowstone?
A.
She is from Yellowstone.
C.
She has been studying animal diseases.
D.
Her thesis adviser is heading the project.
【单选题】开创于隋唐之前,被誉为“莫高窟姊妹窟”的是()