11.   Such an approach proved its worth in nudging North Korea out of its shell into limited compliance with international safeguards on the production of nuclear materials.

12.   That approach may prove to be a huge advantage for the Tera compared with other supercomputers that may have higher peak speeds.

13.   That approach might prove militarily adequate.

14.   The senator was philosophical about such critics, and suggested his approach might prove a tactical advantage in the long run.

15.   There is no question that her unorthodox approach will prove controversial, at least among scholars.

16.   This hushed approach has proven a frustration, however, and after declining earlier requests for an interview, Shaikh agreed to speak of his case.

17.   While the BMW system is the only one that requires no action by the driver, other approaches have proved effective.

18.   When that approach proved unsuccessful, he advocated forming a union of chaplains.

19.   Whichever approach proves best, each scientist said his treatment needs refinement to make it more applicable to a wider group of patients.

20.   He said one or two cords could probably provide enough stem cells to treat one human stroke victim, if the current approach proves useful.