1.   An attorney from Puerto Rico is traveling to Boston next week to see whether the EPA strategy could be used to block Navy bombing exercises there.

2.   Computer technology, however, also can be used to block children from viewing unacceptable material.

3.   Filibusters are rarely used to block presidential appointments under the theory that controversial nominees deserve an up-or-down vote by the full Senate.

4.   Filibusters are seldom used to block nominations under the theory that presidents should be given wide latitude in making high-level appointments.

5.   Gerald Bramer, who injured his left arm when he used it to block the tire, said he has nightmares about what happened.

6.   He also restated his support for an electronic chip to be installed in television sets that could be used to block violent programs.

7.   He said that there were no other reports of armed peasants Monday, and that tree trunks used to block several highways had been removed by early afternoon.

8.   He said screens or glass doors should be used to block sparks from jumping out of the fireplace.

9.   If the effort succeeds, he said, a vaccine might be used to block the spread of the virus when an outbreak occurs.

10.   In that case, the magazine is seeking to publish and link to a computer program that breaks the encryption system used to block copying of DVD movies.