.Unit 1 ReadingBoy missing, police puzzled Police in America have stepped up their search for a fifteen-year-old boy who went missing three days ago in Dover, New Hampshire. This interest has received great interest due to reports of alien visit around the time the boy disappointed. Justin Foster，a high school student，was last seen Friday night. That evening at 8p.m.，Justin went to play baseball with two friends，who both say Justin went home after the game。Witnesses also say they saw J
