听力音频：

• They stay near the 31. ________ and they lack any actual 32. ________
• The coral reef, where the whale sharks feed, is unusually close to the 33. ________

• Tracking devices attached to the whale shark’s 34. ________
• Observing from a 35. ________
• Analysis of plankton shows different amounts of 36. ________ varieties
• Study on the impact of humans on whale shark behaviour:
• Noise caused whale sharks to 37. ________
• A mature whale is tagged and assigned to a 38. ________ to follow.

• Record any 39. ________ to whale sharks in photo-identification libraries.
• Ban scuba activities as whale sharks are affected by the 40. ________ the activities produce.

答案