1.   Advanced cyclists can enjoy the rugged beauty and the challenge of this West Texas terrain.

2.   Although she was a feminist, her primary motivation for joining NoS was the challenge of working on a tabloid.

3.   As the story illustrates, however the biases did not fit the challenge of managing performance and change at Iberian Motors.

4.   At her readers, she throws the challenge of accepting that any friendship could survive those calamities.

5.   But he insisted that organized religion needed to meet the challenge of social unrest and moral Decay.

6.   Catherine required the daily challenge of mundane improvisation.

7.   Cecil Phillips thrived on the cerebral challenge of cracking Soviet codes.

8.   Clinton also faced the challenge of discouraging future actions by the exile group Brothers to the Rescue, whose planes were attacked.

9.   Current systems that monitor infectious diseases domestically and internationally are inadequate to confront the present and future challenges of emerging infections.

10.   During that day on Lulu, I watched closely the men who tended Alvin and envied them the challenge of their job.