11.   But some civil liberties experts expressed alarm at the latest surveillance technique, saying it would have a chilling effect on what is now a freewheeling medium.

12.   But some testing experts have expressed concern that some children might have seen the material in advance.

13.   But some experts expressed doubts about the value of the new slogan and splashy marketing campaign, arguing that economic forces were more significant in determining recruiting results.

14.   But other experts have expressed doubts about that and periodically suggested that other diseases were responsible.

15.   But some experts expressed concern about the way the map would tend to freeze most districts behind incumbents.

16.   But the shares of both companies plummeted as investors and industry experts expressed grave doubts about the wisdom of the deal.

17.   But the experts express confidence in their security codes.

18.   Computer experts are expressing alarm about a new and potentially dangerous computer virus that conceals itself in word processing files and can run on many different types of computer.

19.   Corporate governance experts express astonishment at recent tales from the executive suite.

20.   Defense experts expressed doubt that directors of the FBI, CIA and other long-standing agencies would cede their authority to a newcomer and a political appointee.