# Sea lion tracking study - 科目：雅思听力真题（Part 4） - 考频：高频 - 最近考试：2026.2.28浙江科技大学 - 题目数：10 - 来源页：https://www.yaquan.site/paper/13a30c02-73de-460e-a010-666ba18c216b（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 00:00:01,000 You will hear part of a presentation to biology students on new research into sea lions. 00:00:08,960 First, you have some time to look at questions thirty-one to forty. Now listen carefully and answer questions thirty-one to forty. 00:00:40,920 Hello, everybody. I'm here today to tell you about a new research study that my team here at the university is doing on the sea lions that live along the coast of Western Australia. You may be wondering why we've been studying this animal. Well, Australian sea lions have been identified as an endangered species, so there's a real need to count them and find out just how many there are. 00:01:05,180 Up until eighteen ninety-two, the population of these animals was severely depleted because of hunting. That's no longer allowed, but today there is a new danger. Sea lions often forage for food in the same areas along the coastlines where there are nets used to catch sharks. Unfortunately, they tend to get caught up in the nets by accident and drown. Now, we wanted to monitor the population of sea lions in this area, but we weren't sure of the best way to do it. There are several different animal tracking methods which vary in their effectiveness, and there are different factors to consider. One of the most important of these is the cost, but you also have to consider how easy your chosen method is to use. You may choose a traditional method like a plastic tag. They're relatively straightforward to attach, but they're really only suitable to use with animals that you can catch quite easily. You might also go with a more modern method like GPS tracking, which uses satellite technology to transmit data on the animal around the clock. 00:02:11,039 One drawback for marine animals, though, is that they don't transmit a signal in the ocean. You only get data when they're on land. 00:02:19,680 There are certain large animals in remote areas that have to be tracked using a helicopter. The polar bear is a good example. Now, an important part of tracking is being able to clearly identify the animal. Some, like zebras, are identified by markings such as their stripes, while the dolphin usually has distinguishing scars on its body that can help tell them apart. 00:02:43,000 Sea lions don't have any markings like this, which is just one of the challenges of tracking them. When researchers in Perth tried to use electronic tags in a sea lion study, they found that the sea lions had removed their tracking devices by deliberately rubbing up against rocks. This was something the researchers hadn't anticipated. 00:03:04,100 Researchers in California studying American sea lions tried a different method. 00:03:09,680 They applied paint to the animals. They thought this would be a better, less invasive means of identification. 00:03:17,380 Unfortunately, this didn't work so well either because sea lions molt every year and shed their fur along with the identifying mark. 00:03:30,000 So let's look at our current study. We have several aims that we'd like to achieve. The first of these is to try to establish whether sea lions can be identified from the whiskers on their face. 00:03:41,940 These are much coarser than a cat's whiskers, so easier to see. Our theory is that the pattern of these whiskers may be as individual as a fingerprint on a human. If this is in fact true, then we think this could be an effective way to identify them. 00:03:59,120 Our second aim is to come up with a diagram of sea lion whisker patterns, so this can be used as a guide for us and other studies. 00:04:07,640 We're using a few different methods to help us do all this. We know that we need to build up a wide range of visual data. So firstly, we've been in touch with zoos around Australia to gather photographs from them of the faces of any sea lions they have. This won't be enough to achieve our purpose though, so we're also broadening our search by inviting the public to take part in our research. We're hoping this will result in hundreds of useful images we can use. 00:04:38,980 That is the end of part four. You now have one minute to check your answers to part four. ## 题目与答案 ### 31. Sea Lion Tracking Study (Western Australia) Reason for the study ·The Australian sea lion is an endangered species ·Until 1892, numbers were affected by hunting ·Sea lions are now affected by nets used to control 31_____ . Sea Lion Tracking Study (Western Australia) Reason for the study ·The Australian sea lion is an endangered species ·Until 1892, numbers were affected by hunting ·Sea lions are now affected by nets used to control 31_____ . **答案**：sharks 原文定位：That's no longer allowed, but today there is a new danger. Sea lions often forage for food in the same areas along the coastlines where there are nets used to catch sharks. Unfortunately, they tend to get caught up in the nets by accident and drown 同义替换：「control」↔「catch」；「now」↔「today」 ### 32. Animal tracking systems ·Considerations when choosing a tracking method include 32_____ and ease of use Animal tracking systems ·Considerations when choosing a tracking method include 32_____ and ease of use **答案**：cost 原文定位：There are several different animal tracking methods which vary in their effectiveness, and there are different factors to consider. One of the most important of these is the cost, but you also have to consider how easy your chosen method is to use ### 33. ·Plastic tags: the animal must be easy to 33_____ ·Plastic tags: the animal must be easy to 33_____ **答案**：catch 原文定位：You may choose a traditional method like a plastic tag. They're relatively straightforward to attach, but they're really only suitable to use with animals that you can catch quite easily ### 34. ·GPS tracking will not work in the 34_____ . ·GPS tracking will not work in the 34_____ . **答案**：ocean 原文定位：You might also go with a more modern method like GPS tracking, which uses satellite technology to transmit data on the animal around the clock;One drawback for marine animals, though, is that they don't transmit a signal in the ocean 同义替换：「work」↔「transmit data」 ### 35. ·In isolated regions, some animals are tracked by 35_____) (e.g. the polar) ·Some animals are identified by markings (e.g. dolphins are identified by scars) ·In isolated regions, some animals are tracked by 35_____) (e.g. the polar) ·Some animals are identified by markings (e.g. dolphins are identified by scars) **答案**：helicopter 原文定位：There are certain large animals in remote areas that have to be tracked using a helicopter. The polar bear is a good example 同义替换：「isolated regions」↔「remote areas」；「Some」↔「certain」 ### 36. Challenges of tracking sea lions ·Perth study: sea lions lost their tags. (They rubbed against 36_____ to remove them) Challenges of tracking sea lions ·Perth study: sea lions lost their tags. (They rubbed against 36_____ to remove them) **答案**：rocks 原文定位：When researchers in Perth tried to use electronic tags in a sea lion study, they found that the sea lions had removed their tracking devices by deliberately rubbing up against rocks 同义替换：「lost」↔「had removed」 ### 37. ·Californian researchers used 37_____ to identify sea lions. (This was unreliable due to regular loss of fur) ·Californian researchers used 37_____ to identify sea lions. (This was unreliable due to regular loss of fur) **答案**：paint 原文定位：Researchers in California studying American sea lions tried a different method. They applied paint to the animals;They thought this would be a better, less invasive means of identification. Unfortunately, this didn't work so well either because sea lions molt every year and shed their fur along with the identifying mark 同义替换：「used」↔「applied」 ### 38. Our study Aims: i) to find out if sea lions' whiskers can be used to identify them ii) to create a 38_____ to use as a guide Our study Aims: i) to find out if sea lions' whiskers can be used to identify them ii) to create a 38_____ to use as a guide **答案**：diagram 原文定位：Our second aim is to come up with a diagram of sea lion whisker patterns, so this can be used as a guide for us and other studies 同义替换：「create」↔「come up with」 ### 39. Methods: i) contacting 39_____ in Australia for photographs Methods: i) contacting 39_____ in Australia for photographs **答案**：zoos 原文定位：So firstly, we've been in touch with zoos around Australia to gather photographs from them of the faces of any sea lions they have 同义替换：「contacting」↔「in touch with」 ### 40. ii) asking the 40_____ to get involved ii) asking the 40_____ to get involved **答案**：public 原文定位：This won't be enough to achieve our purpose though, so we're also broadening our search by inviting the public to take part in our research 同义替换：「asking」↔「inviting」；「get involved」↔「take part in」 --- 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。