11.   Over the centuries, as the human intellect began to subdue the environment, he contends, this beneficial skill eventually became an end in itself.

12.   Thanks to the Venetians, technical skill became an overriding value.

13.   The outburst was a result of his raw, powerful athleticism, not the skills needed to become an elite major college guard.

14.   His ad libbing skills became apparent in his early career as a disc jockey.

15.   His etching skills became so refined that he eventually composed directly on the copper plates without need of preparatory drawings.

16.   Transportation officials believe that periodic testing is needed to take motorists whose driving skills become impaired off the road.

17.   She admitted her Russian skills had become the butt of some on-board humor, however.