英语六级阅读备考：快速阅读练习(6)_大学英语阅读

英语六级阅读备考：快速阅读练习(6)

　　Lasers have also been proposed as dazzle weapons, such as the veiling glare laser, the portable PHASR and the helicopter-mounted ACCM. In all cases there have been concerns over safety and eye damage.

　　Non-lethal chemical weapons include calmatives such as the anesthetic derivative disastrously used in a Moscow theatre siege. US chemical research has included such unlikely ideas as a weapon to

　　disrupt enemy troops by turning them temporarily homosexual. There are also serious legal questions about chemical weapons treaties.

　　While some non-lethals have spread beyond the military such as the acoustic LRAD, used to repel pirates there are continuing concerns too little is known about their effects.

　　Conflict Aftermath

　　Although technologists may strive for surgical strikes and quick victories, war leaves many problems behind for people, agriculture, the environment and even the preservation of history. The WHO estimates that 731,000 people were killed by war and violence worldwide in 2002 alone.

　　Landmines are a particular issue, as there is no safe, quick or cheap method to deal with the millions of devices left from previous conflicts. Technological solutions to de-mining include special arrow projectiles, lasers and NMR scanners. There are moves to get around the Ottawa convention banning. landmines, by replacing them with non-lethal devices or weapons that can tell troops from civilians.