Crocodile Study - IELTS Listening with Practice test, Audio, Transcript, And Explanation

Luyện tập đề IELTS Listening Practice với bài Crocodile Study được lấy từ cuốn sách Real Test 2026 - Q1 - Test 5 - Section 4 với trải nghiệm thi IELTS trên máy và giải thích đáp án chi tiết bằng Linearthinking, kèm list từ vựng IELTS cần học trong bài đọc.

Làm Bài Xem giải thích

👂️ Audio and questions

Crocodile Study

Background
- Type of crocodile studied: crocodiles found in salt water
- Location of study: Northern Territory, Australia
- Significance of study: unique because it was the first time a 1.
            
﻿
 had been used to track crocodiles
Previous studies:
- done using 2.
            
﻿
 
- stressful method, also unreliable due to loss of the 3.
            
﻿
 
Reasons for study: the management of crocodiles by the government may not be effective
Research questions:
- How far can crocodiles travel?
- How easily can crocodiles 4.
            
﻿
 ?
Challenge: crocodiles are difficult to observe because they avoid 5.
            
﻿
 
Details of study:
- number of crocodiles involved: three
- method: crocodiles were measured and tagged then relocated using a 6.
            
﻿
 
- monitoring: scientists got data from a transmitter located on the crocodile's 7.
            
﻿
 
Results of study:
- Each crocodile
- first stayed at the site for a few weeks, moving in a random way
- then took the most 8.
            
﻿
 way home
Conclusions:
- a change in policy is needed
- when travelling long distances, crocodiles may use
i. their own senses and the position of the 9.
            
﻿
 
ii. a similar system to 10.
            
﻿
 

❓ Transcript

Crocodile Study

Hello everybody.

I've just arrived back from my field trip, and Professor Martin has asked me to tell you about it today in our research forum.

As many of you know already, my dissertation relates to crocodile behavior.

My specialty is the saltwater crocodile, which is much larger than the freshwater crocodile.

I've just come back from the Northern Territory, where I've been part of a groundbreaking study observing crocodile movements.

Ah, it's not the only time crocodile movements have been followed, but this study is unique because we tracked crocodiles using a satellite.

Up until now, studies like this one have only been able to track crocodile movements using radio.

Not only was this method more stressful for the animal, which had to be caught several times, but it was also not very reliable, as the signal was often lost.

So you might be wondering why we chose to track crocodiles.

Well, crocodile attacks on people and livestock are rare, but when they do happen, the government believes that the problem crocodile should be relocated, rather than killed.

But can we be sure that the crocodile won't simply return to the place where it came from?

So we designed a study to try to answer these questions.

We wanted to establish, firstly, how far crocodiles can travel over a period of time.

The second thing that we wanted to know was how easy is it for crocodiles to navigate?

Could they find their own way home again if they were moved to another location?

Of course, the biggest challenge when observing crocodiles is that they are very secretive animals.

They stay well away from people if they can, which makes them really difficult to follow.

I'll give you some information about the design of the study now.

There were three crocodiles in our study, all from the Northern Territory, and measuring between three and four and a half meters in length.

The crocodiles were captured, measured and tagged, and then taken by helicopter to new locations up to 400 kilometers away from where they were found.

We were then able to use the tracking data to monitor their movements.

We used a specially designed transmitter, which we attached to each animal's head.

The transmitter collected the data and relayed it back to us.

The results of our study were quite astounding.

After they were released, each crocodile remained in the release site for some weeks, making random movements around the site each day.

But then they each swam home, traveling by the most direct route.

These crocodiles showed remarkable navigational skills and stamina to swim such long voyages.

So what conclusions did we draw from this?

Well, we proved that crocodiles are clearly capable of making marathon swims to find their way home.

This meant that the current policy should be reconsidered.

You might be wondering how the crocodiles managed to get home.

We concluded that they used factors such as sight and smell, as well as their position to the sun, to point their way.

It's a little-known fact that crocodiles are more closely related to birds than they are to any other reptile, so we believe it's possible that they used the same system to negotiate long journeys.

Now that the study has been completed, let's take a look at the results of our study.

🔥 Answer key (đáp án và giải thích)

satellite

Giải thích chi tiết

❓ Câu hỏi: Significance of study: unique because it was the first time a ______ had been used to track crocodiles

🎯 Xác định loại từ cần điền:

Sau mạo từ a cần một danh từ số ít đếm được (một thiết bị/công nghệ).
Nội dung câu nói về phương pháp theo dõi cá sấu (track crocodiles) ⇒ dự đoán là công cụ dùng để theo dõi.

✅ Đáp án đúng: satellite

▶️ Bắt đầu nghe ở: câu người nói nhắc đến a groundbreaking study observing crocodile movements và ngay sau đó là phần so sánh study is unique because…

☺️ Giải thích đáp án:

Đọc câu hỏi, xác định từ khóa: unique, used, track crocodiles.
Nghe câu tiếp theo sau “observing crocodile movements”, người nói nhấn mạnh lý do nghiên cứu đặc biệt: “this study is unique because we tracked crocodiles using a satellite.”
Cụm tracked … using a satellite khớp trực tiếp với cấu trúc a ______ had been used to track crocodiles ⇒ điền satellite theo danh sách lựa chọn.

🧐 Lưu ý: ❌ radio => có nhắc đến ngay sau đó (“Up until now… using radio”), nhưng đây là phương pháp cũ trước đây, không phải điểm unique của nghiên cứu này.

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Crocodile Study - IELTS Listening with Practice test, Audio, Transcript, And Explanation

👂️ Audio and questions

❓ Transcript

🔥 Answer key (đáp án và giải thích)

Giải thích chi tiết

IELTS Listening Practice

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🔥 Answer key (đáp án và giải thích)

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