24.What can the app do for travelers according to Paragraph 1?A.Teach travelers how to draw iconic scenic spots.B.Help travelers book tickets for famous scenic spots.C.Tell travelers the exact photo-taking spots and camera settings.25.Why did people buy postcards instead of taking photos in the early days?A.Postcards were more beautiful than real photos.B.The first cameras were heavy and difficult to use.C.People didn't have enough money to buy cameras.26.What does the underlined word "hinders"mean in Paragraph 3?A.Protects.B.Stops.C.Saves27.Which of the following is the best title for the passage?A.The History of Travel CamerasB.How to Use Cameras in Travel CorrectlyC.Why People All Take the Same Travel Photos