【正文】
stones must be for a special purpose. Most historians believe it must be almost 5,000 years old. And perhaps we might never know, ... 3a Read through the article in 3a on page 59 again. What do you think the noises could be? List all your ideas. See who in your group can e up with the most imaginative explanation. What could the noises be? Why do you think so? 3b Look at this newspaper headline and finish the article about the strange happenings. No More Mystery in the Neighborhood Last week, in a quiet neighborhood, something strange happened... We now know what was happening in the neighborhood... Now the mystery is solved. Peo