听力音频：

• The greater honeyguide bird helps local hunters to locate beehives.
• Males have a pink beak and a yellow patch on the 31. ________ while females have less bright color.
• Young birds look different, with a prominent 32. ________ that surrounds the eye.

• The hives in trees in the Niassa Reserve are especially 33. ________.
• The hunters take the honey and the birds enjoy the 34. ________.
• In Mozambique, the relationship between the Yao community and the bird is still strong.
• However, in other countries, the greater honeyguide’s importance grows 35. ________.

• The birds learn to recognize signals from people in distinct regions.
  • Yao hunters use tongues.
  • Tanzania’s cue to hunt is a whistle.
  • In Zambia, it is the sound of 36. ________ being cut.

37. ________ is commonly used to soothe the bees.

• Risks are:
  • being stung
  • being killed by 38. ________.
  • being injured.
• Honey in heavy 39. ________ need to be transported long distances.
• The honey’s flavor depends on the bees that make it and the 40. ________ which produce it.

答案