A、Important words: Please find Chinese for the following words:
Assassin刺客
Anticipate提前布置、 予先准备
Arena竞技场，舞台
Margin 余地、范围
Target 目的，靶子
Shield 防护罩B、Answer the following questions based on the video and script:
1. How many presidents have been killed?
——The story tells that o...
