Presentation On The Problems And Potential Of Biofuels IELTS Listening Answers With Audio, Transcript, And Explanation

Luyện tập đề IELTS Listening Practice với Presentation On The Problems And Potential Of Biofuels được lấy từ cuốn sách IELTS Official Cambridge Guide to IELTS - Test 6 - Section 3 kèm Answer key, list từ vựng IELTS cần học trong bài đọc và Free PDF & Audio Transcript Download với trải nghiệm thi IELTS trên máy và giải thích đáp án chi tiết bằng Linearthinking
Presentation On The Problems And Potential Of Biofuels IELTS Listening Answers With Audio, Transcript, And Explanation

👂️ Audio and questions

00:00
Question 1 - 6
Choose the correct letter, A, B or C.
1
Mike suggests they begin their presentation by
A
explaining what kind of harm is caused by fossil fuels.
B
pointing out that biofuels were in use before fossil fuels.
C
ensuring students know the difference between fossil fuels and biofuels.
2
Karina doesn't want to discuss the production of ethanol because
A
other students will already be familiar with the process.
B
there will not be time to cover more important information.
C
they may not provide an accurate description.
3
Which source of biofuel do the students agree is least environmentally friendly?
A
sugar cane
B
corn
C
canola
4
What is the main problem facing the development of the biofuels industry in the USA?
A
inadequate infrastructure for transporting ethanol
B
not enough farmers growing biofuel crops
C
little government support of biofuel development
5
Karina doubts that sugar cane production in Brazil will
A
lead to the loss of wildlife habitats.
B
create a large number of jobs in the biofuel sector.
C
continue to provide enough energy for the country's needs.
6
Karina and Mike conclude that in order to increase the use of biofuels
A
the price of fossil fuels must go up.
B
more machinery must be adapted to use them.
C
production methods must be more energy-efficient.
Question 7 - 10
Answer the questions below. 
Write NO MORE THAN TWO WORDS for each answer.
What TWO biofuel-related problems do Mike and Karina decide to focus on in the last section of their presentation?
7

8


Which TWO sources of biofuel do Mike and Karina say are being tried out?
9

• algae
10


❓ Transcript

Presentation On The Problems And Potential Of Biofuels
00:00
Karina:
Hi, Mike. How's it going?
Mike:
Actually, I was up last night with an assignment so - yeah, I'm tired, but I guess we'd better sort this presentation out.
Karina:
Well, we've done enough background reading, but I think we need to organise exactly what we're going to say about biofuels during the presentation, and the order.
Mike:
I thought we could start by asking our audience what car engines were first designed to run on - fossil fuels or biofuels.
Karina:
Nice idea.
Mike:
Yes, when most people think about cars and fuel, they think about all the carbon dioxide that's produced, but they don't realise that that wasn't always the case.
Karina:
You're probably right. The earliest car engines ran on fuel made from corn and peanut oil, didn't they?
Mike:
Yes. The manufacturers used the corn and peanut oil and turned them into a kind of very pure alcohol.
Karina:
You mean ethanol?
Mike:
Yes. In fact, most biofuels are still based on ethanol. Actually, I've got some notes here about the process of turning plant-matter into ethanol - the chemical reactions and the fermentation stages and...
Karina:
It's interesting - the other students would appreciate it, but different biofuels use different processes and if we give a general description, there's a risk we'll get it wrong, and then the tutor might mark us down. I'd rather we focus on the environmental issues.
Mike:
Fair enough. So, um - the main plants that are used for biofuel production now are sugar cane, corn...
Karina:
And canola. Of all of them, canola is probably the least harmful because machines that use it don't produce as much carbon monoxide.
Mike:
Sugar cane seems to be controversial. It doesn’t require as much fertilizer as corn does to grow, but when they burn the sugar cane fields, that releases loads of greenhouse gases.
Karina:
Yes, but some critics have suggested that the production of corn ethanol uses up more fossil fuel energy than the biofuel energy it eventually produces. For that reason. I'd say it was more harmful to the environment.
Mike:
I see what you mean. You're probably right. It's interesting how everyone saw the biofuel industry as the answer to our energy problems, but in some ways, biofuels have created new problems.
Karina:
Well, in the USA. I wouldn't say that farmers are having problems - the biofuel industry for them has turned out to be really profitable.
Mike:
I think, though, that even in the USA, ethanol is still only used as an additive to gasoline, or petrol. The problem is that it still has to be transported by trucks or rail because they haven't built any pipelines to move it. Once they do. it'll be cheaper and the industry might move forward.
Karina:
That'll have to happen one day. At least the government are in favour of biofuel development
Mike:
Yes. But Brazil's probably in the lead as far as biofuels are concerned - they've got to the point where they don't need to import any oil now.
Karina:
Which is great, and the industry in Brazil employs a huge number of people, but is it sustainable? I mean, as the population grows, and there are more vehicles on the roads and there's more machinery, surely they can't depend so much on sugar cane?
Karina:
At some point, there has to be a limit on how much land can be used for sugar cane production - certainly if you want to preserve natural habitats and native wildlife.
Mike:
I think that whatever problems Brazil's facing now - the same will be true for any country - you have to weigh up the pros and corns.
Karina:
Well, we probably won't see an increase in biofuel use - I mean, they won't replace fossil fuels until we can find ways to produce them cheaply and quickly and with less cost to the environment.
Mike:
... making sure they require minimal energy to produce.
Karina:
Exactly. And in a way that means they have to cost less than fossil fuels - certainly when you're filling up your car.
Mike:
Yes, and whatever other kind of engines use fossil fuels at the moment.
Karina:
Alright, so in the last section of the presentation, what problems are we focusing on?
Mike:
Well, we've already had a look at different types of pollution in the first section, so we can leave that out, but the biggest issue related to biofuels is that land is now being used to grow biofuels crops - and that's contributing to global hunger.
Karina:
Indeed. It doesn't seem right we're using corn to run cars when people can't afford to buy it to eat. Yes, let's talk about that. The other thing is that in some countries, the way that biofuel crops are grown and harvested still produces a great deal of pollution - really damaging to the atmosphere
Mike:
OK, that's definitely an issue we should look at.
Karina:
Let’s not finish on a negative note, though. Why don’t we talk about the potential new sources of biofuel - so rather than corn and sugar cane - what other plants could be used?
Mike:
Good. Some companies are exploring the possibility of using wood, and seeing how that can be used to make ethanol.
Karina:
Yes, and algae is another possibility. You can grow it in any water and it absorbs pollutants, too.
Mike:
I read that. And grasses. They're another plant that researchers are investigating as a biofuel.
Karina:
And these kind of plants aren’t used as food, which is why …

🔥 Answer key (đáp án và giải thích)

1
B
Rút gọn

Giải thích chi tiết

Đầu tiên, mình cần biết Mike suggest sẽ nói cái gì về biofuel đầu tiên

=> Đáp án sẽ có sau ''but I think we need to organise exactly what we're going to say about biofuels during the presentation, and the order.'' (Karina muốn họ bàn về thứ tự các phần trong bài thuyết trình))

Mike nói là '' I thought we could start by asking our audience what car engines were first designed to run on - fossil fuels or biofuels.''

=> Mike muốn nói về việc car engines chạy bằng fossil fuels hay biofuels đầu tiên .

Sau đó, khi Karina hỏi ''The earliest car engines ran on fuel made from corn and peanut oil, didn't they?'' thì Mike trả lời là "Yes"

Xem full giải thích
2
C
Mở rộng

Giải thích chi tiết

Mình cần nghe xem lý do Karina không muốn discuss về sự sản xuất của ethanol

=> Đáp án sẽ có sau ''You mean ethanol?''

Đầu tiên Mark nói về quá trình sản xuất ethanol, '' Actually, I've got some notes here about the process of turning plant-matter into ethanol - the chemical reactions and the fermentation stages and... ''
Nhưng theo Karina, '' ... but different biofuels use different processes and if we give a general description, there's a risk we'll get it wrong, and then the tutor might mark us down.''

=> Các loại biofuels thì sẽ có những quá trình sản xuất khác nhau, do đó nếu họ chỉ nói chung chung thì sẽ có thể bị sai và trừ điểm. => Đáp án là C



Xem full giải thích
3
B
Mở rộng

Giải thích chi tiết



Mình cần nghe xem loại fuel nào là có hại cho môi trường nhất

Mark và Karina nhắc tới ba đối tượng là sugar cane, corn canola, ''So, um - the main plants that are used for biofuel production now are sugar cane, corn... and canola'' => Mình biết đáp án sẽ tới

Đầu tiên, ''Of all of them, canola is probably the least harmful because machines that use it don't produce as much carbon monoxide.''

=> Canola là cái thân thiện môi trường nhất bởi nó không thải nhiều khí carbon monoxide => Loại đáp án C



Thứ hai, về sugar cane, ''It doesn’t require as much fertilizer as corn does to grow, but when they burn the sugar cane fields, that releases loads of greenhouse gases.''

Xem full giải thích
4
A
Mở rộng

Giải thích chi tiết

Ở câu này mình cần biết các vấn đề mà biofuel tạo ra

=> Đáp án sẽ có sau ''but in some ways, biofuels have created new problems.''

Đầu tiên, Karina nói là ''I wouldn't say that farmers are having problems - the biofuel industry for them has turned out to be really profitable.''

=> Những người nông dân không gặp vấn đề gì, và họ cũng không nhắc là không đủ người nông dân trồng crop => Loại đáp án B



Sau đó Mike nói là ''The problem is that it still has to be transported by trucks or rail because they haven't built any pipelines to move it.''

Xem full giải thích
5
C
Mở rộng

Giải thích chi tiết

Mình cần nghe xem Karina nghĩ việc sản xuất sugar cane ở Brazil sẽ dẫn đến điều gì

=> Đáp án sẽ có sau ''But Brazil's probably in the lead as far as biofuels are concerned ...''



Theo Karina, ''I mean, as the population grows, and there are more vehicles on the roads and there's more machinery, surely they can't depend so much on sugar cane?''

=> Karina nghĩ rằng khi dân số tăng, sẽ có nhiều máy móc và phương tiện hơn, do đó sẽ không có đủ sugar cane để cung cấp nhiên liệu => Karina hoài nghi về việc sugar cane có đủ cung cấp cho nhu cầu tăng lên của con người => Đáp án là C



Sau đó Karina có nhắc đến wildlife, ''At some point, there has to be a limit on how much land can be used for sugar cane production - certainly if you want to preserve natural habitats and native wildlife.''

Xem full giải thích
6
C
Mở rộng

Giải thích chi tiết



Mình cần nghe xem cả hai kết luận là cần làm gì để lượng biofuel tăng

=> Đáp án sẽ có sau ''Well, we probably won't see an increase in biofuel use''

Karina giải thích cụ thể hơn là '' I mean, they won't replace fossil fuels until we can find ways to produce them cheaply and quickly and with less cost to the environment.''

=> Mình cần tìm cách sản xuất biofuel rẻ và nhanh hơn và thân thiện với môi trường hơn, hay nói ngắn gọn là sản xuất hiệu quả hơn. => Đáp án là C



Xem full giải thích
7
(global) hunger
Mở rộng

Giải thích chi tiết

Mình cần điền hai vấn đề của biofuel mà họ sẽ nói tới trong phần cuối

=> Đáp án sẽ có sau ''Alright, so in the last section of the presentation, what problems are we focusing on?''

Đầu tiên, ''but the biggest issue related to biofuels is that land is now being used to grow biofuels crops - and that's contributing to global hunger.''

=> Vấn đề đầu tiên là việc đất giờ được dùng để trồng crop cho biofuel chứ không dùng để trồng lương thực, từ đó dẫn đến global hunger. => Đáp án là (global) hunger



Thứ hai, '' The other thing is that in some countries, the way that biofuel crops are grown and harvested still produces a great deal of pollution''

=> Một vấn đề khác là việc trồng biofuel crop đang dẫn đến ô nhiễm. => Đáp án là pollution



Xem full giải thích
8
Pollution
Mở rộng

Giải thích chi tiết

Mình cần điền hai vấn đề của biofuel mà họ sẽ nói tới trong phần cuối

=> Đáp án sẽ có sau ''Alright, so in the last section of the presentation, what problems are we focusing on?''



Đầu tiên, ''but the biggest issue related to biofuels is that land is now being used to grow biofuels crops - and that's contributing to global hunger.''

=> Vấn đề đầu tiên là việc đất giờ được dùng để trồng crop cho biofuel chứ không dùng để trồng lương thực, từ đó dẫn đến global hunger. => Đáp án là (global) hunger



Thứ hai, '' The other thing is that in some countries, the way that biofuel crops are grown and harvested still produces a great deal of pollution''

Xem full giải thích
9
Wood
Mở rộng

Giải thích chi tiết



Với hai câu cuối, mình cần nghe về các loại nguyên liệu thay thế để làm biofuel

=> Đáp án sẽ có sau ''so rather than corn and sugar cane - what other plants could be used?''

Đầu tiên, ''Some companies are exploring the possibility of using wood, and seeing how that can be used to make ethanol.''

=> Gỗ đang là một nguyên liệu được nghiên cứu để làm ra ethanol => Đáp án là wood



Thứ hai là algea như đề bài đã cho, ''Yes, and algae is another possibility. You can grow it in any water and it absorbs pollutants, too.''

Xem full giải thích
10
grass(es)
Mở rộng

Giải thích chi tiết



Với hai câu cuối, mình cần nghe về các loại nguyên liệu thay thế để làm biofuel

=> Đáp án sẽ có sau ''so rather than corn and sugar cane - what other plants could be used?''





Đầu tiên, ''Some companies are exploring the possibility of using wood, and seeing how that can be used to make ethanol.''

=> Gỗ đang là một nguyên liệu được nghiên cứu để làm ra ethanol => Đáp án là wood

Xem full giải thích

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