11.   Every type has a unique charm and each also poses a unique challenge to the angler.

12.   Few could gainsay that such growth poses an unprecedented challenge to mankind.

13.   For example, Frankfurt could pose a real challenge to London as a financial centre for the futures Markets.

14.   He successfully resisted a challenge to his leadership.

15.   Her outrageous stage act is seen as a challenge to conventional morality.

16.   Here again he is adopting a course of confrontation, a course of deliberate challenge to established authority.

17.   If this trend continues, building societies are poised to provide a greater competitive challenge to the retail banking sector.

18.   In grade school, Clint was a real challenge to all of his teachers.

19.   Indirectly this must have represented a challenge to the influence of Aethelred of Mercia in the East Saxon region.

20.   It believes this would prevent legal challenges to its status while retaining its flexibility to interpret the code according to changing circumstances.