26. Section BDirections: In this section, you will hear 3 short passages. At the end of each passage, you willhear some questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A, B, C and D. Then mark the corresponding letter on Answer Sheet 2 with a single line through the centre.注意：此部分试题请在答题卡2上作答。Passage OneQuestions 26 to 29 are based on the passage you have just heard.A) They look spotlessly clean throughout their lives.B) They are looked after by animal-care organizations.C) They sacrifice their lives for the benefit of humans.D) They are labeled pet animals by the researchers.