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[提示]从空中扔炸弹的飞机对飞行员来说是一件危险的差使,现在,美国人已经试验成功了遥控的“下弹”飞机。在描写试验情况时,文章用了以下一句:...adding that had the bomb contained explosives,the target would have been destroyed.典型的虚拟语气句也!