A 3-year-old boy who was lost in the woods for two days is now safe at home with his family. But Casey Hathaway told     1    （he) rescuers that he was not alone in the wet, freezing cold woods. He said he was with       2    friend-a bear. The child went missing on January 22 while     3    （play) with friends at his grandmother's house in the southern state of North Carolina. When the other children returned to the house and Casey did not, the family searched the area for almost an hour     4     calling the police. Police formed a search and rescue team     5    （look) for the young boy in the nearby woods.     6     two days went by and still-no Casey. Then on January 24, someone called the police saying they heard a child crying in the woods. Police followed up on the information and searched that particular area,     7     they found Casey at about 9: 30 that night. They pulled him out of some bushes. He was in good health. Casey told the rescuers that he       8    （hang)out with a black bear for two days, a bear he called his "friend. "Sheriff Chip Hughes spoke with reporters from several news     9    （agency). He said Casey did not say how he was able to survive in the woods for three days in the cold,     10    （rain) weather.

More than twenty American states ban smoking in public.     1     study has proved that smoke-free laws can reduce a major effect of tobacco—heart disease.The study     2     (take) place in Pueblo, Colorado several years ago. In some states, there were 396 heart attack     3     (patient) in the year before the ban in hospitals.

However,18 months     4     the ban, the number was 237. Smoking in enclosed (封闭的) places is very     5     (harm) to non-smoke. Adults may think they are     6     (actual) protecting their children from second-hand smoke when they smoke outside their homes, or when the children are not there. However, researchers     7     (warn) of what they call “third-hand smoke” so far. When you smoke they say, dangerous matter from tobacco smoke gets into     8     (you) hair and clothing. Then, when you touch a baby, the baby comes into contact with that poisonous matter. The researchers also found that people,     9     agreed that smoke was bad for children’s health, were more likely to have restriction on     10     (smoke) in their homes than others.