It is （） that no one feels like working.

A.Two

B.Three

C.One

D.Any number

One of ___great insights was the paradox of savings.

A、Keynes'

B、 Samuelson's

C、 Friedman's

D、 Smith's

A.[f]

B.[r]

C.[h]

D.[v]

A.[f]

B.[r]

C.[h]

D.[v]

有如下程序：

include ＜iostream＞

using namespace std;

class ONE

{

public:

virtual void f() { cout ＜＜ "1"; }

};

class TWO: public ONE

{

public:

TWO() { cout ＜＜ "2"; }

};

class THREE: public TWO

{

public:

virtual void f() {TWO::f(); cout ＜＜ "3"; }

};

int main()

{

ONE aa, *p;

TWO bb;

THREE cc;

p=&cc;

P-＞f();

return 0;

}

执行上面程序的输出是【 】。

The rediscovery of this species of birds is one of the most___(ordinary)scientific findings in recent years.