China.  one of the largest countries in the world.  which used to _____ resources  is facing the

problem of the  resource shortage.   [      ]

A.  lack of    

B.  be abundant in  

C.  be covered with  

D.  being full of

注重职业操守，讲信用、信誉至上是会计职业道德诚实守信的要求。（）