ANNOUNCER:Part one. Hear a woman asking a friend for advice on travelling by ferry to an island in Scotland. First, you have some time to look at questions 1~4. Now listen carefully and answer questions 1~4.

TAMMY:You know when you went to the Shetland Islands last year, Paul. Did you go by ferry or did you fly?

PAUL:We went by ferry, Tammy. I prefer driving to flying. The journey feels like part of the holiday. hmm.

TAMMY:Which ferry company did you use?

PAUL:There's only one, it's called Northern Ferries. The ferries all leave from Aberdeen.

TAMMY:How frequent are they?

PAUL:The service is pretty limited. There's only one ferry leaving every evening in summer anyway, seven days a week. I'm not sure about the winter months. They may only run on four or five days then.

TAMMY:OK, so it's an overnight trip. I quite like that idea, leaving at night and waking up as you arrive on the island. Can you remember how much you paid for your tickets?

PAUL:They were really cheap, and four people and a car worked out at just under £250. Really?

TAMMY:I was expecting it to be more like £400 during the peak season.

PAUL:So was I. It's great value. It's a good idea to book in advance, because I think they get booked up quite quickly. Especially during the school holidays.

TAMMY:Yes, I suppose so. I'm just not 100 percent sure of our plans yet. What if I had to cancel?

PAUL:That could be a problem. I don't think it's their policy to give refunds, just a voucher, which you can use at a later date. But you have to cancel a month in advance to get that.

TAMMY:Right, well, we need to make up our minds quickly then.

ANNOUNCER:Before you hear the rest of the conversation, you have some time to look at questions 5~10. Now listen and answer questions 5~10.

PAUL:You'd want to book a cabin too. We booked too late to get a cabin with a window. They're more expensive, but much nicer than the inner cabins. You don't have to book a cabin at all, but I think it's worth paying for. They also have luxury cabins which are only for two people, and have a TV. But I wouldn't bother with those.

TAMMY:No, I agree.

PAUL:The only other thing I can think of is to make sure you bring snacks for the kids. The selection on board is quite limited, and not that healthy either. hmm.

TAMMY:What about WiFi on board? Is that any good? Not really.

PAUL:So it's best to bring some books for them.

TAMMY:OK. We may need to bring the dog, if I can't get anyone to look after him.

PAUL:We brought ours, and it was fine. The kennels on board are OK. They're quite big, you just need to provide a blanket.

TAMMY:Uh huh, sounds good.

PAUL:It was all very easy, really. And it was quite an adventure for the kids. They loved being on the sea at night, and in the morning, keeping a lookout for dolphins. We saw loads.

TAMMY:Oh, the kids would love that.

PAUL:One other thing. We arrived in Aberdeen hours before the ferry was due to leave. So we decided to go somewhere else rather than hang around at the port for so long.

TAMMY:Where did you go?

PAUL:Drum Castle.

TAMMY:I've never heard of it. Is that spelled like the instrument?

PAUL:Yeah, it's really worth visiting. It's got an impressive tower and beautiful gardens and ancient woodland.

TAMMY:Sounds lovely. Does it have a restaurant?

PAUL:It's only got a coffee shop, no restaurant. We looked up restaurants in the area, and found an Italian one in a village nearby. I can check the name of it for you if you're interested.

TAMMY:Oh, thanks, Paul. That would be great.

ANNOUNCER:That is the end of part one. You now have one minute to check your answers to part one.

ANNOUNCER:Part two. You will hear a man giving a talk to people who are interested in starting their own street food business. First, you have some time to look at questions 11~14. Now listen carefully and answer questions 11 to 14.

Jon:Good evening, everyone. My name is Jon, and I run Veg Out, a street food business selling vegan food. Since 2012, I've been traveling all around the country cooking vegan food in my converted van. And selling it at all kinds of outdoor events. I'm here to give you some advice based on my experience. The good news is that there's never been a better time to start your own street food business. Street food continues to grow in popularity. I think there are a couple of reasons for this. The first is that street food is a reaction against fast food. Street food ranges from high quality burgers to vegan curries and everything in between. But while fast food is cheap and easy to find, it's not particularly good for you. It's also the same everywhere. What you get with street food on the other hand is something different. People like the idea of trying something they can't get anywhere else. They also like seeing food prepared in front of them, and which hasn't come straight out of a freezer. You need to think about the best place to sell your street food. People always think music festivals are an obvious place to start, but the cost of renting a space can be huge. And there's always a lot of competition. Food markets on the other hand are great, because customers are always really interested in food, and give great feedback. And if you can get a spot in your local park, fantastic. Usually very relaxed, but with lots of customers passing by. Once you get established, you'll start getting asked to do parties, which can be really challenging but lots of fun. Having street food at weddings has become quite fashionable too, but you need to really know what you're doing, as everything needs to be perfect.

ANNOUNCER:Before you hear the rest of the talk, you have some time to look at questions 15 to 20. Now listen and answer questions 15~20.

Jon:Setting up a street food business costs a lot less than opening a restaurant or cafe. But you'll have to buy some basic equipment. I'd try to get things like hobs and fridges second hand if you can. You can replace them with better quality stuff if your business takes off. Renting is another option, but you'll end up spending more money rather than saving it. You've probably got a good idea about the food you're planning to sell. I expect you've done some research to find out if anyone else is selling a similar product, and you'll have thought about any possible allergies to nuts or eggs etcetera. But there's one thing people don't always think about, and that's how you're going to serve it. On a plate? In a bag? Will you provide a fork? Will it all be easily recyclable or reusable? It's got to be easy to eat and look attractive, or customers won't come back. Once you get started, you should be prepared for things to go wrong. Every business faces problems, and here are a few examples from street food businesses that I know. My friends who run Thai Basil started by juggling their street food business with their day jobs in a restaurant. Their work life balance was non existent, as they were working till midnight in the restaurant all week. And then took their food truck to markets on their days off. The owners of Basque found it was hard to make a profit, because the price of fish essential for some of their dishes was so high, and it was hard to charge customers a lot more for those dishes. So they had to stop focusing on fish dishes, and include more vegetarian food. The owners of Lou's Kitchen were making salads to order from their van, and some of their dishes were quite complicated. At one of their first events, they ended up with people standing in a long queue for more than 15 minutes, and many of them lost patience. So make sure whatever you offer can be served quickly and efficiently. The owners of Chip Chop had found a perfect venue near a beach where there weren't any other street food trucks. But what they hadn't realized was that they'd need a special license. Which individual businesses don't need at markets or festivals. It was a complicated process, and in the end, they gave up. So, I hope that's given you a flavor of some of the things that can have.

ANNOUNCER:That is the end of part two. You now have 30 seconds to check your answers to part two.

ANNOUNCER:Part three. You will hear part of a discussion between two textile students about their research into sustainable fashion. First, you have some time to look at questions 21~24. Now listen carefully, and answer questions 21~24.

MADDY:Shall we go through our research for our sustainable fashion project?

RYAN:Good idea. I think I've done enough reading now.

MADDY:Me too. I've learned such a lot about what sustainability actually means.

RYAN:hmm, Same for me with ethical fashion. I didn't really appreciate the difference between that and sustainable fashion before doing this research.

MADDY:I know, most people use these terms interchangeably, but in fact, the difference is quite distinct when you think about it. Sustainable relates to the environment, and ethical relates more to the way workers or animals are treated.

RYAN:I totally understand why people get confused though. There are so many other terms used, like eco-friendly, which is actually quite meaningless.

MADDY:And the way companies use these terms when describing their products doesn't help. They're often deliberately vague, I think, and don't provide enough information about how their products are made.

RYAN:Yes.

MADDY:It was interesting to read about the debates surrounding wool production. And how ethical and sustainable that is. It's generally considered to be sustainable because it's a natural product.

RYAN:And it also lasts a long time and can be recycled. All very positive, but I wasn't convinced by the argument that wool production is sustainable because it doesn't use many chemicals. What about all the fungicides and insecticides used in sheep farming?

MADDY:Good point, and I couldn't find any evidence for the claim about sheep farming being better for the environment than cattle farming.

RYAN:No, they're both really bad. I read different reports about how unethical it is to even shear sheep. Some people say it's cruel, but as long as the sheep are kept in good condition. I can't see anything wrong with it.

MADDY:Me neither.

ANNOUNCER:Before you hear the rest of the discussion, you have some time to look at questions 25~30. Now listen, and answer questions 25~30.

RYAN:Shall we talk about some of the semi-synthetic new fabrics now?

MADDY:OK, let's do that.

RYAN:Let's start with Lyocell. I've been reading about that.

MADDY:Yeah, that's the one produced from the pulp of eucalyptus trees, isn't it?

RYAN:Yes, and what happens with that is really impressive. Over 99 percent of dissolving agents used in the manufacturing process are used again.

MADDY:Yeah. Now, there are a few semi-synthetic fabrics that I'd never heard of, like Cupro, for example.

RYAN:Made from byproducts of the cotton industry to create a kind of vegan silk. But I'm not sure how sustainable this really is, as there are so many reports of pollution caused by the manufacturing process. Bamboo is one fabric we're all familiar with, but I didn't know that it was only organic bamboo that's truly sustainable. Me neither.

MADDY:Apparently, the manufacturing process for a significant proportion of bamboo Is chemically quite intensive, which obviously can be quite damaging.

RYAN:EcoVero is an example of a semi-synthetic fabric which is becoming really popular.

MADDY:Probably because manufacturing causes 50 percent fewer emissions, and takes up half as much energy as conventional fabrics. That saves production costs as well as being better for the environment.

RYAN:That's true. I think demand for cork will continue to grow. It works really well in vegan shoes and bags.

MADDY:hmm, and it's the only fabric that's fundamentally sustainable. The cork trees it comes from are renewable, and the product itself is both recyclable and biodegradable, which is unique.

RYAN:And the harvesting process is actually good for the trees. There are no downsides to using this source at all.

MADDY:Hemp is another really good sustainable fabric from a natural source.

RYAN:Yes, did you know that clothes made from hemp protect the wearer from the sun? And it's also antibacterial.

MADDY:No, I didn't. But I did read that it's quite hard to grow, so perhaps that's why it's not as common as you think.

RYAN:I'm sure that'll change. Then, there are recite.

ANNOUNCER:That is the end of part three. You now have 30 seconds to check your answers to part three.

ANNOUNCER:Part four. You will hear part of an ecology lecture about invasive species of plants and animals. First, you have some time to look at questions 31~40. Now listen carefully, and answer questions 31~40.

WOMAN:Today, I'm going to talk about invasive species. Let me start by saying what an invasive species is, and what it's not. Invasive species are any animal or plant that is introduced into an environment by humans, and which is then harmful to that environment. It's important to be clear that not all introduced species are invasive. Many introduced or non-native species thrive in new areas without posing any threat. In some cases, invasive species have changed the natural world beyond recognition. So let's look at the different ways they can be problematic. First of all, invasive species may eat native species, or sometimes they may bring a disease with them, which native species have never faced before. And therefore have no defenses against. Often the invasive species breed very quickly, which further adds to the problem of native species losing their sources of food. Species invasions are one of the biggest causes of damage in an ecosystem, actually putting its survival at risk. So how do invasive species spread? Without a doubt, the biggest cause is human activity. This could be intentional. Or it could be accidental, such as when people who've been on holiday in another country come back with, say, the seeds of plants on their clothes or shoes. Plants and animals, especially insects, arrive in or on the cargo of ships, and then escape into their new home. Sometimes humans deliberately move animals and plants around the world. For example, to use them to control pests on farms. Or to be pets. This can go very wrong if those animals and plants move into wild settings, and start breeding or begin growing in ways that weren't predicted. Let's now look at an example of an invasive species here in Australia. Rhinella marina is a species of toad that was deliberately introduced from Hawaii in 1935, as a form of biological control. It was hoped that the toads would eat the grey-backed beetles responsible for destroying crops of sugar on many of the plantations. At first, just a handful of toads were released by scientists into Queensland. But this number soon grew as other states followed suit. Within two years, 62,000 young toads had been released into the wild. The toads did nothing to protect the plantations, but they did reproduce rapidly, and could soon be found all over the northern half of the country. The toads are poisonous at every stage of their life cycle, and anything that eats them will die. My second example regarding invasive species is the United Kingdom. Actually, there are more than 3,000 invasive species there. Including some that are extremely common. Some invasive plants such as Japanese knotweed have had a devastating impact on parts of the UK. Gardeners in the nineteenth century considered it a beautiful ornamental plant, which it is when it's kept under control. But it soon spread into the countryside, and remains a problem even to this day, as it's so hard to eradicate. Another invasive plant is rhododendrons, which can be found in UK parks and woodlands. Their introduction dates back to 1763. But they're now seen as harmful because they block out so much light that native wild flowers can't grow beneath them. And then there are grey squirrels, which are one invasive species almost everyone in the UK will have come across. They were brought to the UK from North America. And introduced to private estates around the 1870s, but are now found everywhere from forests to city squares. Grey squirrels have outcompeted the smaller native red squirrels. They both eat the same food, and the grey squirrels carry a type of virus that is deadly to the red squirrels. Red squirrel populations have collapsed, and there are only a handful of sites left in the UK where they're found. An important question for ecologists worldwide is What can we do to tackle the problem of invasive species? The first step in controlling invasive species is learning about the behavior of new species coming into the country. Monitoring is an important part of this so that we can know if the new species begins to have a negative impact in its new environment. One effective way to keep track of invasive species is to create a database for the whole country. That way, all relevant authorities and agencies can share important information. And take whatever action's needed. But the public also have a vital role to play in this process. They should be encouraged to photograph harmful species because this helps with identification. And then, to report when and where these were observed. It's important to tell people not to destroy or even touch what they've found. Now, I'm going to move on to an exam.

ANNOUNCER:That is the end of part four. You now have one minute to check your answers to part four.