IELTS Listening Übungstest

Ein vollständiger Übungstest mit 40 eigenen Fragen im Format von IELTS Listening: vier Teile mit je zehn Fragen, von einem Anruf bei einem Fahrradverleih und einer Einführung für neue Freiwillige in einem Naturzentrum im Feuchtgebiet bis zu einer Diskussion zwischen zwei Studierenden und ihrem Tutor sowie einer Vorlesung. Zu jeder Aufnahme gibt es ein Transkript, jede Antwort wird auf Englisch erklärt, die Anweisungen sind auf Deutsch. Im echten Test hören Sie jede Aufnahme nur einmal; versuchen Sie es hier auch so. Die Antworten, die Sie im Test selbst schreiben, wählen Sie hier aus Vorschlägen, und es gibt keine Aufgaben zu Karten oder Plänen.

Über diese Fragen

Alle Namen, Orte, Daten und Preise sind für die Übung erfunden. IELTS ist eine Marke von IDP Education, dem British Council und Cambridge University Press & Assessment. FreeExamPath ist unabhängig und weder mit ihnen verbunden noch von ihnen empfohlen. Diese Übungen sind kein offizielles IELTS-Material, und Ihr Ergebnis ist die Zahl der richtigen Antworten, kein IELTS-Band. Die Aufnahmen liest die Stimme Ihres Browsers; im echten Test hören Sie aufgenommene menschliche Stimmen.

Die Stimme kommt aus Ihrem Browser oder Gerät und klingt deshalb auf jedem Gerät anders. Es wird nichts aufgenommen oder gesendet.

Ihr Fortschritt wird nur in diesem Browser gespeichert.

Teil 1: Alltagsgespräch (Formular ergänzen)

Questions 1 to 10. You will hear a telephone conversation. You hear it once only. Complete the booking form: for each gap, choose the answer you hear (A, B or C). In the real test you write the word or number yourself.Fragen 1 bis 10. Sie hören ein Telefongespräch. Sie hören es nur einmal. Ergänzen Sie das Buchungsformular: Wählen Sie für jede Lücke die Antwort, die Sie hören (A, B oder C). Im echten Test schreiben Sie das Wort oder die Zahl selbst.

You will hear a woman phoning a bike hire company to book bikes for a group. Complete the booking form.Sie hören eine Frau, die bei einem Fahrradverleih anruft, um Fahrräder für eine Gruppe zu reservieren. Ergänzen Sie das Buchungsformular.

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Clerk: Good morning, Gullhaven Cycle Hire, Owen speaking. How can I help?

Nadia: Oh, hello. I'd like to book some bikes for a group, please. It's for a day out with some people from work.

Clerk: Of course. Let me just open a booking form. Can I take your name first?

Nadia: Yes, it's Nadia Ferriby.

Clerk: Could you spell the surname for me?

Nadia: Sure. It's F, E, double R, I, B, Y. People often write it with an A in the middle, or with E, B, Y at the end, but it's definitely I, B, Y.

Clerk: F, E, double R, I, B, Y. Got it. And how many bikes will you need?

Nadia: Well, when I first looked at your website there were going to be six of us, but one of my colleagues has just told me she's away that weekend. So it'll be five bikes.

Clerk: Five, lovely. Five's actually a useful number, but I'll come back to that. Which day were you thinking of?

Nadia: We were hoping for Saturday the fourteenth.

Clerk: Let me check. Ah, I'm sorry, Saturday the fourteenth is fully booked. There's a charity ride along the coast that day and they've taken nearly all our bikes. What about the following day, Sunday the fifteenth?

Nadia: Hmm. The other option would be the Saturday after, the twenty-first, but a few people are away then. I suppose Sunday would work. Let's go for Sunday the fifteenth.

Clerk: Sunday the fifteenth it is. Now, what kind of bikes would you like? We have mountain bikes, hybrids and electric bikes.

Nadia: Well, we're planning to do the coastal path to the lighthouse. Is that very hilly?

Clerk: There are one or two steep bits near the end, but it's mostly flat and the surface is good. You certainly don't need mountain bikes for it.

Nadia: What about electric ones? A couple of people in the group haven't cycled for years.

Clerk: They're very popular, but they're thirty-five pounds a day, and honestly, on that route most people manage fine on a hybrid.

Nadia: Then I think hybrids would be best. How much are they?

Clerk: Hybrids are normally twenty-two pounds a day. But this is why I said five was a useful number. For groups of five or more, the price drops to eighteen pounds per bike.

Nadia: Oh, that's good news. And does that include helmets?

Clerk: Yes, helmets are included, and so are locks. The only thing that costs extra is panniers, the bags that fit on the back of the bike. They're three pounds each for the day.

Nadia: I think we'll just bring rucksacks. What time do you open on a Sunday?

Clerk: We open at nine on Sundays.

Nadia: Could we collect the bikes at half past nine?

Clerk: You could, but on Sunday mornings our mechanic does his safety checks first, and with a group booking that can take a while. Quarter to ten would be safer.

Nadia: That's fine. Quarter to ten, then. Do we come to your shop on Mill Lane?

Clerk: No, the shop's quite small, so for groups we bring the bikes down to our kiosk at the harbour car park. If anyone's coming by train, the station's only a ten-minute walk from the harbour.

Nadia: Perfect. Is there a deposit?

Clerk: Yes, it's fifteen pounds per bike, so for five bikes that's seventy-five pounds altogether. If there had still been six of you, it would have been ninety. You get it all back when the bikes are returned.

Nadia: OK. Shall I pay that now?

Clerk: You can pay it on the day. I'll just need a contact number in case anything changes.

Nadia: Of course. It's oh seven seven oh nine, four three two, six one eight.

Clerk: Oh seven seven oh nine, four two three...

Nadia: No, sorry, four three two. Then six one eight.

Clerk: Four three two, six one eight. Thanks. I'll send you a confirmation by text this afternoon.

Nadia: Great. Thanks very much for your help.

Frage 1

Booking form. Customer's surname: Lücke

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Richtige Antwort: B — Ferriby

Warum? Nadia spells her name F, E, double R, I, B, Y. She says people wrongly write an A in the middle or E, B, Y at the end.Nadia spells her name F, E, double R, I, B, Y. She says people wrongly write an A in the middle or E, B, Y at the end.

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Frage 2

Number of bikes: Lücke

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Richtige Antwort: A — 5

Warum? Six people were going to come, but one colleague is away, so Nadia books five bikes.Six people were going to come, but one colleague is away, so Nadia books five bikes.

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Frage 3

Date of hire: Lücke

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Richtige Antwort: C — Sunday 15th

Warum? Saturday the fourteenth is fully booked and a few people are away on the twenty-first, so Nadia chooses Sunday the fifteenth.Saturday the fourteenth is fully booked and a few people are away on the twenty-first, so Nadia chooses Sunday the fifteenth.

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Frage 4

Type of bike: Lücke

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Richtige Antwort: C — hybrid

Warum? The clerk says mountain bikes are not needed and electric bikes cost more than necessary for the route, so Nadia chooses hybrids.The clerk says mountain bikes are not needed and electric bikes cost more than necessary for the route, so Nadia chooses hybrids.

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Frage 5

Price per bike per day: Lücke

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Richtige Antwort: B — £18

Warum? Hybrids normally cost twenty-two pounds, but the group of five gets the lower price of eighteen pounds. Thirty-five pounds is the price of an electric bike.Hybrids normally cost twenty-two pounds, but the group of five gets the lower price of eighteen pounds. Thirty-five pounds is the price of an electric bike.

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Frage 6

Extra charge for: Lücke

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Richtige Antwort: A — panniers

Warum? Helmets and locks are included in the price; only panniers (bags for the back of the bike) cost extra.Helmets and locks are included in the price; only panniers (bags for the back of the bike) cost extra.

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Frage 7

Collection time: Lücke

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Richtige Antwort: B — 9.45

Warum? The shop opens at nine and Nadia asks for half past nine, but the clerk suggests quarter to ten (9.45) and she agrees.The shop opens at nine and Nadia asks for half past nine, but the clerk suggests quarter to ten (9.45) and she agrees.

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Frage 8

Collection point: Lücke

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Richtige Antwort: C — harbour car park

Warum? Groups do not collect from the small shop on Mill Lane; the bikes are brought to the kiosk at the harbour car park. The station is only mentioned as a ten-minute walk away.Groups do not collect from the small shop on Mill Lane; the bikes are brought to the kiosk at the harbour car park. The station is only mentioned as a ten-minute walk away.

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Frage 9

Total deposit: Lücke

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Richtige Antwort: A — £75

Warum? The deposit is fifteen pounds per bike, so five bikes cost seventy-five pounds in total. Ninety pounds would have been the total for six bikes.The deposit is fifteen pounds per bike, so five bikes cost seventy-five pounds in total. Ninety pounds would have been the total for six bikes.

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Frage 10

Contact number: Lücke

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Richtige Antwort: B — 07709 432 618

Warum? The clerk repeats the middle group as four two three, and Nadia corrects him: it is four three two, then six one eight.The clerk repeats the middle group as four two three, and Nadia corrects him: it is four three two, then six one eight.

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Teil 2: Monolog aus dem Alltag (Multiple Choice und Zuordnung)

Questions 11 to 20. You will hear a talk. You hear it once only. For questions 11 to 14 and 20, choose the right answer (A, B or C). For questions 15 to 19, choose what volunteers do in each area of the site (A, B, C or D).Fragen 11 bis 20. Sie hören einen Vortrag. Sie hören ihn nur einmal. Wählen Sie bei den Fragen 11 bis 14 und 20 die richtige Antwort (A, B oder C). Wählen Sie bei den Fragen 15 bis 19, was die Freiwilligen in jedem Bereich des Geländes tun (A, B, C oder D).

You will hear the volunteer manager of a wetland nature centre talking to a group of new volunteers.Sie hören die Leiterin der Ehrenamtlichen eines Feuchtgebiet-Naturzentrums, die zu einer Gruppe neuer Freiwilliger spricht.

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Good morning, everyone, and welcome to Brackenmoor Wetland Centre. My name's Grace Ellery and I'm the volunteer manager here. Thank you all for giving up your Saturday morning to come to this induction. First, a little history. The centre opened eighteen months later than planned. A lot of people assume the problem was money, but in fact the grants were all in place before building started. The winter that year was very wet, which slowed things down a little, but the builders coped with that. What really stopped the work was a pair of marsh harriers, a protected species, which decided to nest in the reeds right next to the building site. By law, we couldn't make any noise near them until the young birds had left, so everything stopped for a whole season. Since we opened, visitor numbers have been far higher than we expected. We'd planned mainly for keen birdwatchers, and they do come, especially in winter, and we see plenty of families at weekends. But the largest single group by far has been school parties, so you'll be seeing a lot of children during the week. Now, a practical point. You'll all be given a green fleece with the centre's logo on it, but it's really only needed if you're working outside in cold weather. And you don't need walking boots, as all the main paths are boarded. The one thing you must wear at all times, inside and out, is your name badge. Visitors need to know who to ask, and our insurance requires it. There's also something you might be asked about. We'd hoped to start guided boat trips on the lagoon this spring, but the new jetty won't be finished until the autumn, so please don't promise those to anyone yet. The children's nature trail has been running since we opened. What is new is our programme of bat walks on Friday evenings, and they're already very popular. Right, let me explain what volunteers do in each area of the site. We're in the Visitor Hall now. You might think the main job here would be selling memberships, but that's done by paid staff at the front desk. Volunteers in the hall mainly help visitors to use the telescopes and the live camera screens. Next, the Reed Hide, the wooden shelter at the end of the north path. People often expect volunteers to be counting the birds in there, but the official counts are done by our ecologists. In the hide, your job is to keep a record of how many visitors come in each hour, using the counter on the wall. Then there's Willow Meadow, where the school groups have their activities. A lot of litter-picking needs doing there after lunch, but our grounds team handles that. Volunteers in the meadow lead the minibeast hunts, helping children find and identify insects in the long grass. The Pond Zone is next to the meadow. Volunteers used to run pond-dipping there, but since last year that's been led by our education officers, who are trained teachers. What we need volunteers for in the Pond Zone is checking the water quality each morning, which just means taking a sample and recording the temperature on a sheet. And finally, the Workshop, behind the car park. Some of our volunteers repair the boardwalk, but that's done out on the reserve, not in the workshop. In the workshop itself, volunteers build the nest boxes that we sell in the shop. So, how do you sign up for shifts? Please don't use the paper sheet in the staff room, as we've stopped using it, and only phone the office in an emergency. Everything now goes through the volunteer app, which you'll have received a link to by email this morning. Just choose the area and the day, and you'll get a reminder the evening before.

Frage 11

Why did the centre open later than planned?

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Richtige Antwort: C — Protected birds were nesting.

Warum? The grants were already in place and the wet winter only slowed the work a little. Work stopped because protected marsh harriers were nesting next to the site.The grants were already in place and the wet winter only slowed the work a little. Work stopped because protected marsh harriers were nesting next to the site.

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Frage 12

Which group of visitors has been the largest?

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Richtige Antwort: A — school parties

Warum? Birdwatchers and families do come, but school parties are by far the largest group.Birdwatchers and families do come, but school parties are by far the largest group.

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Frage 13

What must volunteers wear at all times?

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Richtige Antwort: A — a name badge

Warum? The fleece is only needed outside in cold weather and boots are not needed; the name badge must be worn at all times.The fleece is only needed outside in cold weather and boots are not needed; the name badge must be worn at all times.

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Frage 14

What is new at the centre this year?

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Richtige Antwort: B — bat walks

Warum? The boat trips cannot start until the jetty is finished and the nature trail has run since the centre opened. The bat walks are new.The boat trips cannot start until the jetty is finished and the nature trail has run since the centre opened. The bat walks are new.

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Frage 15

Area of the site: Visitor Hall. What do volunteers do there?

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Richtige Antwort: C — helping visitors use the telescopes

Warum? Memberships are sold by paid staff at the front desk; volunteers in the hall help visitors use the telescopes and camera screens.Memberships are sold by paid staff at the front desk; volunteers in the hall help visitors use the telescopes and camera screens.

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Frage 16

Area of the site: Reed Hide. What do volunteers do there?

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Richtige Antwort: D — recording visitor numbers

Warum? The ecologists count the birds; volunteers in the hide record how many visitors come in each hour.The ecologists count the birds; volunteers in the hide record how many visitors come in each hour.

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Frage 17

Area of the site: Willow Meadow. What do volunteers do there?

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Richtige Antwort: A — leading minibeast hunts

Warum? The grounds team does the litter-picking; volunteers in the meadow lead the minibeast hunts.The grounds team does the litter-picking; volunteers in the meadow lead the minibeast hunts.

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Frage 18

Area of the site: Pond Zone. What do volunteers do there?

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Richtige Antwort: C — checking water quality

Warum? Pond-dipping is now led by the education officers; volunteers check the water quality each morning.Pond-dipping is now led by the education officers; volunteers check the water quality each morning.

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Frage 19

Area of the site: Workshop. What do volunteers do there?

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Richtige Antwort: B — building nest boxes

Warum? Boardwalk repairs happen out on the reserve, not in the workshop; in the workshop volunteers build nest boxes.Boardwalk repairs happen out on the reserve, not in the workshop; in the workshop volunteers build nest boxes.

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Frage 20

How should volunteers sign up for shifts?

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Richtige Antwort: A — through an app

Warum? The paper sheet is no longer used and the office should only be phoned in an emergency; shifts are booked through the app.The paper sheet is no longer used and the office should only be phoned in an emergency; shifts are booked through the app.

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Teil 3: Gespräch im Studienkontext (Multiple Choice und Zuordnung)

Questions 21 to 30. You will hear two students talking to their tutor. You hear the conversation once only. For questions 21 to 24, 29 and 30, choose the right answer (A, B or C). For questions 25 to 28, choose what the students will do with each section of their report (A, B, C or D).Fragen 21 bis 30. Sie hören zwei Studierende im Gespräch mit ihrem Tutor. Sie hören das Gespräch nur einmal. Wählen Sie bei den Fragen 21 bis 24, 29 und 30 die richtige Antwort (A, B oder C). Wählen Sie bei den Fragen 25 bis 28, was die Studierenden mit jedem Abschnitt ihres Berichts machen werden (A, B, C oder D).

You will hear two students, Leah and Marcus, discussing their project on food waste with their tutor, Dr Pryce.Sie hören zwei Studierende, Leah und Marcus, die mit ihrem Tutor Dr. Pryce über ihr Projekt zur Lebensmittelverschwendung sprechen.

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Dr Pryce: Come in, both of you. So, this is our last meeting before you write up the food waste project. How's it going?

Leah: Pretty well, I think. All the data's in now. We had forty-two students in four halls of residence keeping records for two weeks.

Dr Pryce: Good. And was there anything in the results that surprised you?

Marcus: Well, we'd expected people to throw away a lot of fresh vegetables, and they did, but that wasn't the surprise. And bread came out about where we'd predicted, too.

Leah: What really struck us was the questionnaire we gave everyone at the start. We asked them to estimate how much food they threw away each week, and almost everyone guessed far less than they actually recorded. Some people were wasting three times what they'd estimated.

Dr Pryce: That's a nice finding. Now, in your proposal you said you'd use written food diaries. Did you stick with that?

Marcus: No, we changed after the first two days. It wasn't that people refused to do it. The diaries just kept getting lost, and then the entries were filled in from memory days later, so we couldn't really trust them.

Leah: So we switched to asking people to photograph anything they threw away and upload it to a shared folder. Neither method cost anything, so the budget wasn't an issue.

Dr Pryce: And the photos are time-stamped, so you know when things were thrown away. Sensible. Now, your sample. Forty-two is perfectly acceptable for a project of this size, so I'm not worried about the numbers. What does concern me a little is that they were all first-year students, which you'll need to acknowledge.

Marcus: Yes, because older students often live in private flats and cook more.

Dr Pryce: Exactly. You can't claim the results apply to all students, so make that clear in your limitations section. What about the literature review?

Leah: We've got plenty on household food waste in general. We were thinking of adding something on supermarket packaging, but there's so much of it we'd never get through it.

Marcus: I think what's missing is anything on shared kitchens, since that's what makes student halls different from ordinary homes.

Dr Pryce: I agree. There are a couple of studies on shared housing that would be really relevant. Put those in rather than the packaging material. Now, shall we go through the sections of the report one by one? What are you doing with the introduction?

Leah: At the moment it's nearly two pages long. We've got a whole history of food waste campaigns in there.

Dr Pryce: That's far too much. The reader just needs to know why the topic matters and what your questions are. I'd cut it to about half a page.

Leah: OK, we'll shorten it.

Dr Pryce: And the method section?

Marcus: We were going to include all the instructions we gave the participants, and the photo guidelines.

Dr Pryce: Those are useful, but they'll interrupt the flow. Put them in an appendix and just refer to them in the method.

Marcus: Right. An appendix for those.

Dr Pryce: Results?

Leah: We've written them up as paragraphs, but there are a lot of numbers.

Dr Pryce: Then a table would make them much easier to follow. Did you think about adding some of the photos?

Leah: We did, but some of them show people's rooms, so we decided not to, for privacy reasons.

Dr Pryce: Fair enough. So a table it is. And the recommendations?

Marcus: We were worried they're too short, actually. There are only five bullet points.

Dr Pryce: I read the draft you sent, and to be honest I wouldn't change them. They're clear and they follow directly from your data. Five is plenty.

Marcus: Oh, good.

Dr Pryce: Which of them do you think is the most important?

Leah: We talked about that. Smaller portions in the canteen was one idea, but most of the halls don't have a canteen any more. Labelled shelves in the fridges came up a lot as well.

Marcus: But we both agreed the main one is getting students to plan their meals for the week before they go shopping, because most of the waste came from food bought on impulse.

Dr Pryce: I think that's right. Make that your headline recommendation. So, when can I see a full draft?

Leah: We were hoping to send it on Friday.

Dr Pryce: I'm away at a conference on Friday and Monday. Could you send it on Tuesday instead? Then I'll have time to read it properly before we meet on Thursday.

Marcus: Tuesday's fine. We'll have it to you by then.

Frage 21

What surprised the students most about their results?

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Richtige Antwort: B — how much students underestimated waste

Warum? The vegetable and bread results were as expected. The surprise was that students guessed far less waste than they actually recorded.The vegetable and bread results were as expected. The surprise was that students guessed far less waste than they actually recorded.

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Frage 22

Why did the students stop using written food diaries?

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Richtige Antwort: C — The records could not be trusted.

Warum? Marcus says people did not refuse and Leah says neither method cost anything; the diaries were lost or filled in from memory, so the records were unreliable.Marcus says people did not refuse and Leah says neither method cost anything; the diaries were lost or filled in from memory, so the records were unreliable.

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Frage 23

What does the tutor say about the sample?

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Richtige Antwort: A — It covers only one year group.

Warum? Dr Pryce says forty-two is an acceptable number; his concern is that all the participants were first-year students.Dr Pryce says forty-two is an acceptable number; his concern is that all the participants were first-year students.

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Frage 24

What will the students add to their literature review?

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Richtige Antwort: B — studies of shared housing

Warum? They already have plenty on household waste, and the tutor tells them to add studies on shared housing rather than packaging.They already have plenty on household waste, and the tutor tells them to add studies on shared housing rather than packaging.

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Frage 25

Section of the report: Introduction. What will the students do?

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Richtige Antwort: B — shorten it

Warum? The introduction is nearly two pages long, the tutor suggests about half a page, and Leah agrees to shorten it.The introduction is nearly two pages long, the tutor suggests about half a page, and Leah agrees to shorten it.

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Frage 26

Section of the report: Method. What will the students do?

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Richtige Antwort: D — move material to an appendix

Warum? The participant instructions and photo guidelines will go into an appendix and only be referred to in the method.The participant instructions and photo guidelines will go into an appendix and only be referred to in the method.

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Frage 27

Section of the report: Results. What will the students do?

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Richtige Antwort: A — add a table

Warum? The photos are left out for privacy reasons; the results will be shown in a table to make the numbers easier to follow.The photos are left out for privacy reasons; the results will be shown in a table to make the numbers easier to follow.

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Frage 28

Section of the report: Recommendations. What will the students do?

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Richtige Antwort: C — leave it unchanged

Warum? Marcus worries the five points are too short, but the tutor says he would not change them and five is plenty.Marcus worries the five points are too short, but the tutor says he would not change them and five is plenty.

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Frage 29

Which recommendation do the students choose as the most important?

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Richtige Antwort: B — planning meals before shopping

Warum? Most halls have no canteen, and labelled shelves are mentioned but not chosen; they agree that meal planning before shopping is the main recommendation.Most halls have no canteen, and labelled shelves are mentioned but not chosen; they agree that meal planning before shopping is the main recommendation.

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Frage 30

When will the students send the full draft?

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Richtige Antwort: A — on Tuesday

Warum? They planned Friday, but the tutor is away on Friday and Monday, so they will send it on Tuesday. Thursday is the day of their next meeting.They planned Friday, but the tutor is away on Friday and Monday, so they will send it on Tuesday. Thursday is the day of their next meeting.

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Teil 4: Vorlesung (Notizen ergänzen)

Questions 31 to 40. You will hear part of a lecture. You hear it once only. Complete the notes: for each gap, choose the word or words you hear (A, B or C). In the real test you write the missing words yourself.Fragen 31 bis 40. Sie hören einen Teil einer Vorlesung. Sie hören ihn nur einmal. Ergänzen Sie die Notizen: Wählen Sie für jede Lücke das Wort oder die Wörter, die Sie hören (A, B oder C). Im echten Test schreiben Sie die fehlenden Wörter selbst.

You will hear part of a lecture on how birds have adapted their songs to life in cities. Complete the notes.Sie hören einen Teil einer Vorlesung darüber, wie Vögel ihren Gesang an das Leben in der Stadt angepasst haben. Ergänzen Sie die Notizen.

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Good morning. In today's lecture, which is part of our module on animal behaviour, I'm going to look at how birds have adapted their songs to life in towns and cities. I'll start with some general background, then describe a study carried out in the city of Harbridge, and finish with some questions that are still open. First, why do birds sing at all? There are two main reasons. One is to attract a mate, and the other is to defend a territory. That's not, as people often think, the nest itself, but the whole area around it, which a male needs to keep other males away from. In both cases, the song only works if it can be heard. And that is the central problem for urban birds, because towns are noisy places, and most of that noise comes from road traffic. Traffic noise is mainly low in frequency. It's a deep rumble rather than a high whine. Many bird songs contain both low and high notes, and it's the low notes that get lost, or masked, as we say, by the traffic. Researchers in many countries have noticed that birds living in noisy areas tend to sing at a higher pitch than birds of the same species living in quiet woodland. In effect, they move their songs out of the way of the noise. A second strategy is simply to sing more loudly. Humans do this too. If you've ever had a conversation in a busy restaurant, you'll know that you raise your voice without thinking about it. This automatic response is known as the Lombard effect. The third strategy is about timing. Some urban birds have been found singing earlier in the morning, before the rush hour, or even at night. It was once assumed that street lighting was the main cause of night singing, and light may play a part, but in some studies noise turned out to be a better predictor. The birds seem to choose the quietest part of the day. Now let's turn to the study in Harbridge, a medium-sized port city. The research team focused on blackbirds, partly because they're common both in the city and in the surrounding countryside, which makes comparison easy. Their original plan was to work with robins, but robins sing for much of the year, including winter, and the team wanted a species with a clear breeding season. The team made recordings at forty sites, twenty in the city centre and twenty in woodland outside the city. To avoid differences caused by equipment, every recording was made with the same type of microphone. They also measured the noise level at each site, so that they could compare the songs with the amount of traffic. So what did they find? As expected, city blackbirds sang at a higher pitch. But the difference that interested the team most was in the length of the songs. City birds sang noticeably shorter phrases, with more repetition. The researchers suggest that a short, repeated phrase has a better chance of being heard in the gaps between vehicles. There was one more unexpected result. At a few city sites close to the ring road, the team recorded blackbirds copying sounds from their surroundings. Not car alarms, as you might guess, but the warning beeps of reversing lorries. So, does any of this matter for the birds? This is where the research gets more difficult. A higher song may be easier to hear, but there's some evidence that females prefer lower songs, because a deep song may signal a larger, healthier male. If that's true, urban males may be paying a price for being heard. The Harbridge team are now planning a second stage, in which they will measure breeding success, in other words, how many young birds each pair actually raises in the city compared with the woodland. Finally, what does this mean in practice? Some cities have started to use quieter road surfaces, and others have planted thick hedges along busy roads to absorb some of the noise. But the measure the Harbridge researchers recommend most strongly is lower speed limits near parks, because the noise from tyres falls sharply as vehicles slow down. That's all for today. Next week, we'll look at how insects respond to artificial light.

Frage 31

Why birds sing: to attract a mate and to defend a Lücke

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Richtige Antwort: C — territory

Warum? Birds sing to defend a territory; the lecturer says this is not the nest itself but the whole area around it.Birds sing to defend a territory; the lecturer says this is not the nest itself but the whole area around it.

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Frage 32

Traffic noise is mainly Lücke in frequency.

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Richtige Antwort: B — low

Warum? Traffic noise is a deep, low rumble, not a high whine.Traffic noise is a deep, low rumble, not a high whine.

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Frage 33

Strategy 1: birds in noisy areas sing at a higher Lücke

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Richtige Antwort: A — pitch

Warum? Birds in noisy places sing at a higher pitch. Singing more loudly (volume) is the second, separate strategy.Birds in noisy places sing at a higher pitch. Singing more loudly (volume) is the second, separate strategy.

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Frage 34

Singing at night: in some studies better predicted by Lücke than by street lighting.

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Richtige Antwort: A — noise

Warum? Street lighting was once thought to be the main cause, but in some studies noise was a better predictor of night singing.Street lighting was once thought to be the main cause, but in some studies noise was a better predictor of night singing.

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Frage 35

Harbridge study: robins were not chosen because they also sing in Lücke

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Richtige Antwort: C — winter

Warum? The team wanted a species with a clear breeding season, and robins sing for much of the year, including winter.The team wanted a species with a clear breeding season, and robins sing for much of the year, including winter.

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Frage 36

Every recording was made with the same type of Lücke

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Richtige Antwort: B — microphone

Warum? To avoid differences caused by equipment, the team used the same type of microphone at all forty sites.To avoid differences caused by equipment, the team used the same type of microphone at all forty sites.

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Frage 37

Most interesting finding: city birds' songs differed in Lücke

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Richtige Antwort: C — length

Warum? A higher pitch was expected; what interested the team most was that city birds sang shorter phrases.A higher pitch was expected; what interested the team most was that city birds sang shorter phrases.

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Frage 38

Near the ring road, some blackbirds copied the warning beeps of reversing Lücke

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Richtige Antwort: A — lorries

Warum? The lecturer says the birds did not copy car alarms but the beeps of reversing lorries.The lecturer says the birds did not copy car alarms but the beeps of reversing lorries.

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Frage 39

Second stage of the study: measuring breeding Lücke

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Richtige Antwort: B — success

Warum? The next stage will measure breeding success, meaning how many young birds each pair raises.The next stage will measure breeding success, meaning how many young birds each pair raises.

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Frage 40

Measure the researchers recommend most strongly: Lücke near parks

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Richtige Antwort: C — lower speed limits

Warum? Quieter road surfaces and hedges are used in some cities, but the Harbridge team most strongly recommend lower speed limits near parks.Quieter road surfaces and hedges are used in some cities, but the Harbridge team most strongly recommend lower speed limits near parks.

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