第二节 单句改错（共5小题：每小题1分，满分5分） 小题1:Police have found which appears to be the lost ancient statue. 小题2:A serious study of physics is impossible beyond some knowledge of maths. 小题3:The Smiths are praised by the way they bring up their children. 小题4:If being asked to look after luggage for someone else, inform the police at once. 小题5:He wrote a letter that he explained what had happened in the accident.