تدريب Shadowing: Listening part three (experiment on artificial sweeteners) @ieltslisteningpro.24 - تعلم التحدث بالإنجليزية مع YouTube

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Part 3.
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Part 3.
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You will hear two food science students called Adam and Rosie starting to plan their presentation on diet and obesity.
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First, you have some time to look at questions 21 to 24.
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Now listen carefully and answer questions 21 to 24.
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OK, Rosie, shall we try to get some ideas together for our presentation on diet and obesity?
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Sure.
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I can talk about the experiment I did to see if people can tell the difference between real sugar and artificial sweeteners.
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Where you gave people drinks with either sugar or artificial sweeteners,
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and they had to say which they thought it was?
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Yeah.
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It took me ages to decide exactly how I'd organise it,
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especially how I could make sure that people didn't know which drink I was giving them.
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It was hard to keep track of it all,
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especially as I had so many people doing it.
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I had to make sure I kept a proper record of what each person had had.
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So, could most people tell the difference?
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Yeah.
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I hadn't thought that they would be able to, but most people could.
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Then there's that experiment I did,
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measuring the fat content of nuts,
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to see if the nutritional information given on the packet was accurate.
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The one where you ground up the nuts and mixed them with a chemical to absorb the fat?
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Yes.
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My results were a bit problematic.
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The fat content for that type of nut seemed much lower than it said on the package.
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But I reckon the package information was right.
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I think I should probably have ground up the nuts more than I did.
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It's possible that the scales for weighing the fat weren't accurate enough too.
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I'd really like to try the experiment again sometime.
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Before you hear the rest of the discussion,
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you have some time to look at questions 25 to 30.
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Thank you.
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So what can we say about helping people to lose weight?
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There's a lot we could say about what restaurants could do to reduce obesity.
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I read that the items at the start of a menu
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and the items at the end of a menu are much more likely to be chosen than the items in the middle.
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So if you put the low-calorie items at the beginning and end of the menu,
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people will probably go for the food with fewer calories without even realising what they're doing.
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I think food manufacturers could do more to encourage healthy eating.
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How?
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Well, when manufacturers put calorie counts of a food on the label,
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they're sometimes really confusing.
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And I suspect they do it on purpose,
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because food that's high in calories tastes better,
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and so they'll sell more.
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Yeah, so if you look at the amount of calories in a pizza,
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they'll give you the calories per quarter pizza,
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and you think, oh, that's not too bad.
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But who's going to eat a quarter pizza?
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Exactly.
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I suppose another approach to this problem is to get people to exercise more.
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Right.
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In England, the current guidelines offer at least 30 minutes of brisk walking five days a week.
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Now, when you ask them,
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about 40% of men and 30% of women say they do this.
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But when you objectively measure the amount of walking they do with motion sensors,
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you find that only 6% of men and 4% of women do the recommended amount of exercise.
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Hmm, so you can see why obesity is growing.
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So how can people be encouraged to take more exercise?
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Hmm, well, for example, think of the location of stairs in a train station.
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If people reach the stairs before they reach the escalator when they're leaving the station,
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they're more likely to take the stairs.
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And if you increase the width of the stairs,
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you'll get more people using them at the same time.
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It's an unconscious process and influenced by minor modifications in their environment.
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Right.
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Great.
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And it might not be a big change,
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but if it happens every day, it all adds up.
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Yes.
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But actually, I'm not sure if we should be talking about exercise in our presentation.
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Well, we've done quite a bit of reading about it.
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I know, but it's going to mean we have a very wide focus.
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And our tutor did say that we need to focus on causes and solutions in terms of nutrition.
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Oh, I suppose so.
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And we've got plenty of information about that.
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OK, well, that will be simpler.
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So, what shall we do now?
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We've still got half an hour before our next lecture.
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Let's think about what we're going to include and what we'll go where.
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Then we can decide what slides we need.
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OK, fine.
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That is the end of part three.
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You now have half a minute to check your answers to part three.
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Thank you.

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المفردات والعبارات الرئيسية

  • sweeteners - محليات
  • experiment - تجربة
  • fat content - محتوى الدهون
  • calories - سعرات حرارية
  • nutritional information - معلومات غذائية
  • menu - قائمة الطعام
  • obesity - السمنة

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