【简答题】Americans can travel almost anywhere they choose. But to protect its people, the government lists a few erous places where Americans cannot go. These places are unfriendly countries or countries a...
【简答题】The Blessing and Curse of the People Who Never Forget A handful of people can recall almost every day of their lives in enormous detail—and after years of research, neuroscientists (神经科学专家) are finall...