51.  At the end of the lecture, French President Jacques Chirac raised a question of policy relating to U.N. peacekeeping efforts in Bosnia.

52.  At the same time, the bill raised the level of proof plaintiffs must show to win such damages.

53.  At the same time, the new across-the-computing-board strategy raises challenges that the software publisher has not previously faced.

54.  At the same time, the operation raises troubling questions that must not be ducked.

55.  At the same time, the stock market sell-off raises a new issue in the debate over tax cuts.

56.  At the same time, the surges raised concern that speculation in stocks is increasing, signaling a possible top in the market, traders said.

57.  At the same time, he raised questions among many concerning the role of religious leaders within secular society, an intriguing intersection of moral values and civic autonomy.

58.  At the same time, the rush to patent genes raises profound ethical and social questions.

59.  At the same time, the strong support for Fisk raises questions about what it takes to get the support of the voters.

60.  At his news conference, Spitzer raised the possibility that supporters of his opponent might try to tamper with the results.