----- Nội dung dịch tự động từ ảnh ----- Questions 11-20 Look at the sentences below about the Iditarod Trail in Alaska. Read the text on the opposite page to decide if each sentence is correct or incorrect. If it is correct, mark A on your answer sheet. If it is not correct, mark B on your answer sheet. 11 The population of Alaska remained the same throughout the 1880s. 12 For a short time, more people lived in Iditarod than in any other city in Alaska. 13 After 1910, it became possible to deliver letters in winter as well as summer. 14 When travelling on the Iditarod Trail, drivers had to take food for the dogs with them. 15 In the 1920s, aeroplanes were used more often than boats and dogs. 16 Doctors in Nome had a good supply of medicine to cure diphtheria. 17 The pilot Carl Eielson refused to fly his plane because of the cold weather. 18 Leonhard Seppala's dog was able to lead him safely to his destination. 19 Balto fell into some icy water but managed to save himself. 20 The Iditarod race takes a different route every year.