31.   Fuels, cleaning fluids, lubricants and other chemicals are leaching into groundwater, and unexploded shells linger on testing grounds long after U.S. soldiers leave.

32.   Given its diversity in terrain and wildlife, Vermejo was a great testing ground for ideas about conservation.

33.   He decided to use the landfill as a testing ground for his media students.

34.   He is nonetheless eager to leave the laboratory of the practice field for the testing ground of the regular season.

35.   He believes New England would be a better testing ground for centrist positions on foreign affairs and trade.

36.   Hong Kong is soon to be the prime testing ground of Chinese tolerance and intentions.

37.   In a way, Texaco has become a testing ground for the push for civil rights in the private sector.

38.   In addition to perking up profits, the U.S. coffee boom has been a testing ground for Italian makers.

39.   In large part because of the trap, the league this spring tinkered with some key rule changes, using the minors as a testing ground.

40.   It de-emphasized its medical component and uses the Las Vegas location as a testing ground for new pampering treatments.