【简答题】Lie detectors are widely used in the United States to find out whether a person is telling the truth or not. Paleographers, the people who operate them, claim that they can establish guilt by detectin...
【简答题】Lie detectors are widely used in the United States to find out whether a person is telling the truth or not. Paleographers, the people who operate them, claim that they can establish guilt by detectin...