Which of the following sentences is NOT true10/15 Read the passage below and choose one correct answer for each question. Which of the following sentences is NOT true?UFO means Unidentified Flying Object.UFO is often used to talk about alien spaceships.Many UFO sightings are hoaxes.Over half of all reported UFO sightings are identified.Giải thíchĐáp án: C Thông tin: Thông tin của phương án C không có trong bài.