Leatherback turtles

文章大意

雅思听力Part4介绍棱皮龟这种海龟：它流线型身体游泳阻力小、比同体型海龟省能20%；能深潜3330英尺并停留37分钟，靠软壳和厚组织抗压；主要吃水母，科学家通过记录器追踪其大西洋迁徙路线。

题目与答案

1. 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

2. 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」

3. 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」

4. 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」

5. 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」

6. 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」

7. 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」

8. 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」

9. 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」

10. 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