# Leatherback turtles - 科目：雅思听力真题（Part 4） - 考频：中频 - 最近考试：2019.3.2/2013.11.16 - 题目数：10 - 来源页：https://www.yaquan.site/paper/58440eef-9809-48c1-a84b-3c36d3f73c5f（在线机考练习与音频请访问该页面） - 数据更新：2026-10-29 ## 题目原文 00:00:03,000 Sea creature called leatherback turtle. Jenny Dovanikin of Florida Atlantic University has shown that they are the advantages of the leatherback's streamlined shape. Swimming leatherback turtles have a lower drag, more efficient than other species, indicating more efficient force. To swim at the same distance to other sea turtles of the comparable size and weight, leatherback turtles spend on average 20% less energy. Among all the deep-diving animals, the champions have always been assumed to be the marine mammals, the great whales and the airless seals. Our recent investigations, however, suggest that leatherback sea turtles may also be ranked among the ocean's greatest air-breathing dive reptiles. While marrying the dives of the leatherback sea turtles near St. Croix in the U.S. Virgin Islands, scientists recorded a 650-pound female ascending to more than 3,330 feet and remained there for 37 minutes. High pressure also poses a challenge to the deep diver in terms of strong forces that could compress the chest, causing broken bones or tissue damage. Unlike its hard-shelled relatives, leatherbacks has a softer shell made up from widely separated ribs embedded in a thick tissue, and the whole structure is overlaid with a leathery skin. How do the deep-diving animals, whales, seals, penguins, and leatherback turtles avoid decompression sickness and other hazards while they dive to the great depths? Even sleep for long periods of time. Many of the deepest diving marine mammals have small lungs and falsely exhale before diving. In addition to reducing the buoyancy so that they can dive more easily, this severely limits the amount of nitrogen in their bloodstream. One reason the leatherback ranges so far may be its specialized diet. This giant of the sea feeds mainly on jellyfish full of high protein and other useful minerals that it requires during the day. Although the variety of jellyfish and related prey are abundant, they are eaten by few other animals. As one might suspect, a life spent eating mostly jellyfish requires some special adaptations to make the job easier. 00:02:17,500 During the 1984 and 1985 nesting seasons, with assistance of scientists, attached recorders to 10 female leatherbacks that just laid eggs. As a result, we are able to monitor the pattern of migration in Atlantic Ocean when they return to the sea. Some of the longest travel recorded for many animals have been made by this marine turtle. In 1970, a female leatherback was tagged when she nested in Suremi on the northeastern coast of South America. Less than one year later, she was captured off the coast of Ghana, West Africa, having traveled 3,700 miles across the Atlantic Ocean. Upon returning to the surface, the turtles changed a quick breath and immediately headed straight down again. Little or no time was given to sleep or rest. We then begin to track and tag the turtles when they swim back to the surface. On closer examination, we notice a difference in dives depending on the time of the day. Night dives were shallower with less in depth than day dives. Leatherbacks are such swimmers that they rarely stop moving, a behavior that has made it impossible to keep them in captivity. The front flippers are more than half the length of the turtle's body and generate power from huge muscles, which can account for 30% of the animal's total body weight. Since leatherbacks cannot easily be studied in captivity, researchers have been developing methods of studying them at sea. They used a recorder, an instrument capable of recording location and depth in sea. Developed by Gerald Kuhlman of the Psychological Research Laboratory, the device has been used to study diving marine animals. Why they keep diving? Scientists soon realized that the turtles were probably costing much of their energy to follow their food source. In tropical waters, jellyfish are most common at great depths. In a biological zone called the deep scattering layer. Discovered shortly after development of sonar, this zone consists of a layer of zooplankton that hovers below 1,800 feet during the day and migrates to the surface at night. ## 题目与答案 ### 31. Background The advantages 31_____ of leatherback turtles makes them swim efficiently than others. Background The advantages 31_____ of leatherback turtles makes them swim efficiently than others. **答案**：streamlined 原文定位：Jenny Dovanikin of Florida Atlantic University has shown that they are the advantages of the leatherback's streamlined shape. Swimming leatherback turtles have a lower drag, more efficient than other species, indicating more efficient force ### 32. It is one of the deepest 32_____ reptile. It is one of the deepest 32_____ reptile. **答案**：diving 原文定位：Our recent investigations, however, suggest that leatherback sea turtles may also be ranked among the ocean's greatest air-breathing dive reptiles 同义替换：「deepest」↔「greatest」；「one of」↔「among」 ### 33. Shell is 33_____ not bony to avoid from high pressure. Shell is 33_____ not bony to avoid from high pressure. **答案**：soft 原文定位：Unlike its hard-shelled relatives, leatherbacks has a softer shell made up from widely separated ribs embedded in a thick tissue, and the whole structure is overlaid with a leathery skin 同义替换：「not bony」↔「softer」 ### 34. Leatherback can 34_____ in the water for several hours due to their size of lungs. Leatherback can 34_____ in the water for several hours due to their size of lungs. **答案**：sleep 原文定位：How do the deep-diving animals, whales, seals, penguins, and leatherback turtles avoid decompression sickness and other hazards while they dive to the great depths? Even sleep for long periods of time 同义替换：「several hours」↔「long periods of time」；「in the water」↔「dive to the great depths」 ### 35. Main food is jellyfish contains high proportion in 35_____ and mineral. Main food is jellyfish contains high proportion in 35_____ and mineral. **答案**：protein 原文定位：This giant of the sea feeds mainly on jellyfish full of high protein and other useful minerals that it requires during the day 同义替换：「food」↔「feeds」 ### 36. Research methods: Scientists can learn their 36_____ pattern in Atlantic ocean. Research methods: Scientists can learn their 36_____ pattern in Atlantic ocean. **答案**：migration 原文定位：As a result, we are able to monitor the pattern of migration in Atlantic Ocean when they return to the sea 同义替换：「learn」↔「monitor」 ### 37. Scientists can start tracking when the turtle reaches 37_____ . Scientists can start tracking when the turtle reaches 37_____ . **答案**：surface 原文定位：We then begin to track and tag the turtles when they swim back to the surface 同义替换：「reaches」↔「swim back to」；「start」↔「begin」 ### 38. Huge front flipper can produce 38_____ from strong muscles. Huge front flipper can produce 38_____ from strong muscles. **答案**：power 原文定位：The front flippers are more than half the length of the turtle's body and generate power from huge muscles, which can account for 30% of the animal's total body weight 同义替换：「produce」↔「generate」；「strong」↔「huge」 ### 39. A new recorder can monitor not only their location but also the 39_____ in the sea. A new recorder can monitor not only their location but also the 39_____ in the sea. **答案**：depth 原文定位：They used a recorder, an instrument capable of recording location and depth in sea 同义替换：「monitor」↔「recording」 ### 40. Leatherback turtles are found using more 40_____ to search food. Leatherback turtles are found using more 40_____ to search food. **答案**：energy 原文定位：Scientists soon realized that the turtles were probably costing much of their energy to follow their food source --- 以上内容由鸭圈雅思真题库（www.yaquan.site）提供，收录近期雅思考试真题回忆，支持在线机考模式免费练习。