Section B

　　Directions: In this section, you will hear 3 short passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only once. After you hear one question, you must choose the best answer from the four choices marked A), B), C) and D). Then mark the corresponding letter on the Answer Sheet 2 with a single line through the centre.

　　Passage One

　　Questions 26 to 28 are based on the passage you have just heard.

　　26. A) Several explorers. B) Representatives of Congress.

　　C) President Grant. D) A group of animal lovers.

　　27. A) It was the first national park. B) It was the first region explored by pioneers.

　　C) It is not accessible to everyone. D) It is not managed by the National Park service.

　　28. A) To build fires. B) To conduct scientific studies.

　　C) To train other staff members. D) To guide nature walks.

　　Passage Two

　　Questions 29 to 31 are based on the passage you have just heard.

　　29. A) From the library, the ASPCA and books including puppy training.

　　B) From all books for raising and training dogs.

　　C) By buying a dog from a pet store.

　　D) By discussing in families.

　　30. A) Because they are easy to feed and train.

　　B) Because they are very big and powerful.

　　C) Because they can protect family from being stolen.

　　D) Because they provide companionship as well as protection.

　　31. A) They don’t need much space. B) They are small and easy to train.

　　C) They don’t need to be walked daily. D) All of the above.

　　Passage Three

　　Questions 32 to 35 are based on the passage you have just heard.

　　32. A) Plants can produce some poisonous chemicals for defense against insects.

　　B) Insect have been eating plants for many million years.

　　C) Insects have developed ways of dealing with poisonous chemicals produced by plants themselves.

　　D) Insects have already developed some resistance to man-made poisons.

　　33. A) The use of insecticides should be limited and controlled.

　　B) A combination of some insecticides should be used at the same time.

　　C) New insects should be introduced to mate with those that have survived from a certain kind of insecticide.

　　D) New kinds of insecticides should be explored and developed.

　　34. A) Insects would be out of control some day if nothing were done about the present situation.

　　B) Insects will some day devour all green vegetable matter on earth.

　　C) Insects have developed resistance to both botanical and artificial poisons rapidly.

　　D) Insects are the most adaptable creatures.

　　35. A) Insects out of Control. B) An Urgent Challenge in Agriculture.

　　C) How to Use Insecticides Properly. D) Insects and Insecticides.