# The tiger shark - 科目：雅思听力真题（Part 4） - 考频：中频 - 最近考试：2009.2.12 - 题目数：10 - 来源页：https://www.yaquan.site/paper/e9cb5135-b3b6-4abf-b277-6aa2773d2da7（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 00:00:00,940 Now listen carefully and answer questions 31 to 40. 00:00:08,420 Good morning, everyone. Today, I'm gonna talk about the research project I've been involved in on the tiger shark. First of all, some background information. The tiger shark, also known as the leopard shark, is often thought to have got its name from its aggressive nature. But in actual fact, it's called that because it has dark bands similar to those on a tiger's body. 00:00:35,540 It is a huge creature, growing up to lengths of six and a half meters. 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. 00:00:51,980 In terms of feeding, tiger sharks tend to be most active at night and are solitary hunters. Their preferred prey includes other sharks, turtles, sea birds, and dolphins, to name but a few. 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. 00:01:20,780 Now to the project itself. 00:01:23,620 We are particularly interested in some studies that have been done in the Rain Island area. Observations here have shown that there is a large population of tiger sharks present in the summer during the turtle nesting season. However, during the winter months, the sharks disappear. So we decided to do some of our own research there. 00:01:51,560 The first step was to tag a number of sharks so that we could follow their movements. To do this, we first needed to catch the sharks. Early in the morning, we baited lines with large bits of fish and set them in place. These lines were then checked every three or four hours. If no sharks were caught, the baits were replaced. Once a shark had been caught on one of the baited hooks, it was pulled in close to the boat and secured so that we could carry out a number of brief activities to aid our research. 00:02:26,660 This usually took no more than about ten minutes and was carried out as carefully as possible to minimize any stress to the shark. 00:02:35,500 Each of the tiger sharks that we caught was measured and fitted with an identification tag, and also a small amount of tissue was taken for genetic studies. For some larger sharks over three meters long, we also inserted into the belly a special acoustic tag capable of sending satellite signals. While on other large sharks, we attached a camera to the dorsal fin to enable us to study the behavior and habitat use of the sharks. 00:03:06,900 After this, the shark was released, and we were able to follow its movements. 00:03:13,180 So what was the purpose of all this tagging? 00:03:16,580 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 and whether it was, in fact, food, weather, and reproductive needs. 00:03:37,160 These are some of our findings. 00:03:39,800 On February twenty-first, a large female shark, whom we named Natalie, was attracted to our research boat at the northern tip of Rain Island and fitted with one of the satellite tags I've just mentioned. No transmissions were received from Natalie between April second and April twenty-ninth, indicating that she didn't surface to feed during this period. The area in which she was last reported is very shallow, suggesting that she may have changed her feeding preferences during this period to focus on prey found on the sea floor. 00:04:16,640 We also made a number of other discoveries, thanks to the various transmitters we used. It seems that tiger sharks move back and forth between the ocean floor and the surface quite often. This may help the sharks conserve energy while they swim, but it probably also helps them hunt since this movement back and forth maximizes its chances of not being detected by its prey until the last minute. 00:04:45,280 So far, our findings have not been conclusive. However, we have gained some very interesting insights into the behavior of tiger sharks and are now hoping to develop our research further. 00:05:01,220 That is the end of section four. You now have half a minute to check your answers. ## 题目与答案 ### 31. ·Origin of name: its dark bands ·Size: 6.5 metres (maximum) ·Preferred habitat: near to the 31_____ ·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」 ### 32. ·Typical food: other sea creatures but also 32_____ produced by humans ·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」 ### 33. ·Paine Island area: studies show tiger sharks are mainly found here during the 33_____ (when turtles are nesting) ·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」 ### 34. Shark Tagging Process ·Pieces of 34_____ were attached to lines as bait 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」 ### 35. ·The lines were 35_____ regularly. ·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」 ### 36. ·The hooked shark was brought to the 36_____ and secured. ·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」 ### 37. ·The shark was measured and tagged, and tissue removed for research. ·Large sharks: an acoustic tag was fitted or a 37_____ was attached. ·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 ### 38. ·The shark was 38_____ and could be tracked. ·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」 ### 39. 39 The purpose of the research was to understand the tiger sharks 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」 ### 40. 40 Observations showed that, in general, tiger sharks 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 --- 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。