Have you ever suddenly felt that someone you knew was in trouble or he would die? Have you ever dreamed something that came true later? Maybe you have ESP. ESP stands for extrasensory perception ( 超感官知觉 ).It may be called a sixth sense .It seems to let people know about s before they happen, or s that are happening some distance away. There are thousands of stories on record. Scientists are studying them to find out what’s behind these strange mental messages .here is an example about one of hundreds of dreams that have come true . A man dreamed that he was walking along a road when a horse and carriage came by, The driver said," There is room for one more." The man felt that driver was dead, so he ran away. The next day, the man was getting on a crowded bus. The bus driver saw that man and said," There is room for one more." Then the man found the driver's face was the same face he had seen in the dream. He wouldn't get on the bus. As the bus drove off, it suddenly crashed and burst into flames. Everyone in the bus was killed. Some people say stories like these are lies or coincidences . Others, including come scientists, say that ESP is real. From studies of ESP, we may some day learn more about human mind.