A Brave Man

网友回答：

he heard someone6 shouting "help！"he ran7 outside at once. he saw8 a 8-year-old boy in the river and a dog sat9 on the ground10. the boy told the scientist， the dog was very afraid and ran away quickly. then the scientist jumped into the river. he helped

温馨提醒：随时光变迁，文中所陈述观点；准确性、难免有所变动，因此文中观点仅供参考。