The tiger shark

文章大意

文章介绍虎鲨（又称豹纹鲨）的研究项目：虎鲨因身上类似老虎的深色条纹得名，体长可达6.5米，分布于全球温带和热带海域，夜间独自捕食，猎物包括其他鲨鱼、海龟、海鸟和海豚，也会误食垃圾。研究在Rain Island进行，夏季海龟筑巢期虎鲨聚集，冬季消失，团队通过诱饵捕获并打标签追踪其活动。

题目与答案

1. ·Origin of name: its dark bands

   ·Size: 6.5 metres (maximum)

   ·Preferred habitat: near to the 31_____

   答案：coast

   原文定位：It can be found just about everywhere throughout the world's temperate and tropical seas, but it is most often found along the coast rather than the open sea

   同义替换：「Preferred habitat」↔「most often found」，「near to」↔「along」

2. ·Typical food: other sea creatures but also 32_____ produced by humans

   答案：garbage

   原文定位：However, it's not uncommon to find garbage in its stomach. This is because it tends to feed in areas such as harbors and river inlets where there is a lot of human activity

   同义替换：「typical food」↔「things found in its stomach」，「produced by humans」↔「human activity」

3. ·Paine Island area: studies show tiger sharks are mainly found here during the 33_____ (when turtles are nesting)

   答案：summer

   原文定位：Observations here have shown that there is a large population of tiger sharks present in the summer during the turtle nesting season

   同义替换：「mainly found」↔「a large population present」，「when turtles are nesting」↔「during the turtle nesting season」

4. Shark Tagging Process

   ·Pieces of 34_____ were attached to lines as bait

   答案：fish

   原文定位：Early in the morning, we baited lines with large bits of fish and set them in place

   同义替换：「Pieces of」↔「large bits of」，「attached to lines as bait」↔「baited lines」

5. ·The lines were 35_____ regularly.

   答案：checked

   原文定位：These lines were then checked every three or four hours

   同义替换：「regularly」↔「every three or four hours」

6. ·The hooked shark was brought to the 36_____ and secured.

   答案：boat

   原文定位：Once a shark had been caught on one of the baited hooks, it was pulled in close to the boat and secured

   同义替换：「brought to」↔「pulled in close to」

7. ·The shark was measured and tagged, and tissue removed for research.

   ·Large sharks: an acoustic tag was fitted or a 37_____ was attached.

   答案：camera

   原文定位：For some larger sharks over three meters long, we also inserted into the belly a special acoustic tag;While on other large sharks, we attached a camera to the dorsal fin

8. ·The shark was 38_____ and could be tracked.

   答案：released

   原文定位：After this, the shark was released, and we were able to follow its movements

   同义替换：「could be tracked」↔「follow its movements」

9. 39 The purpose of the research was to understand the tiger sharks
   • reproductive patterns
   • migration patterns
   • feeding patterns

   答案：migration patterns

   原文定位：Well, while we were already familiar with some aspects of the tiger shark's behavior and food sources, what we hoped to do in this project was to see exactly what factors affected the migration patterns of tiger sharks

   同义替换：「purpose of the research」↔「what we hoped to do in this project」，「understand」↔「see exactly what factors affected」

10. 40 Observations showed that, in general, tiger sharks
    • change depths frequently
    • usually avoid the surface of the water
    • often spend long periods on the ocean floor

    答案：change depths frequently

    原文定位：It seems that tiger sharks move back and forth between the ocean floor and the surface quite often