Giải Đề Cambridge IELTS 19: Test 3 – Listening Section 3 – Science experiment for Year 12 students
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A. Luyện nghe
B. Audioscripts
CLARE: Hi Jake. How are you getting on with the practical teaching?
JAKE: It’s harder than I expected, but I’ve got some great classes. How about you?
CLARE: Not brilliant. I’m really struggling with my Year 12 science class.
JAKE: Are they hard to control?
CLARE: Well, I don’t have discipline problems as such. It’s just that they don’t seem to think that science has anything to do with their lives. It’s depressing. They listen to what I say, and I gave them a test last week and the results weren’t too bad, but there’s no real engagement. Q21
JAKE: Right.
CLARE: And as part of my teaching practice, I have to design an experiment for them to do. I was wondering about something on the children’s diets… you know, asking them to record what they eat and maybe linking it to their state of health.
JAKE: Mmm. Let’s think. So your methodology would involve the children recording what they eat. OK, but you’d also need to have access to the children’s medical records and I don’t think people would be happy about that; confidentiality would be an issue. If you could get the right data, the conclusions might be significant, but I suspect it’s just not going to be easy. Q22
CLARE: Right.
JAKE: Have you thought about doing an experiment using animals?
CLARE: Wouldn’t that be upsetting for the children?
JAKE: Well, the animals don’t have to be harmed in any way. It could just be an experiment where they’re given a certain diet and the effects are observed.
CLARE: Would I have to get permission to use animals?
JAKE: Yes, you’d have to submit an outline of the experiment and fill in a form, but it’s quite straightforward.
CLARE: But if we found out that, say, a particular diet affects the health of animals, the same thing wouldn’t necessarily be true for people, would it? Q23
JAKE: No that’s true, but the findings for any experiment are going to be limited. It’s inevitable.
CLARE: I suppose so. So what animals could I use to investigate the effects of diet? Mice?
JAKE: Yes. You’d need experimental mice – ones that have been specially bred for experiments.
OK, so what will your experiment be investigating exactly?
CLARE: Well, something to do with nutrition. So maybe we could look at food supplements… things like extra iron and extra protein, and their impact on health.
JAKE:Mmm. That might be rather broad. Maybe just look at the effects of one supplement, like sugar, on the health of the mice?
CLARE: In fact, maybe the focus could be on whether mice can control their own diet. Q24
JAKE: So, what happens when they have access to more sugar, that they don’t really need?
CLARE: Exactly. Do they eat it or do they decide to leave it?
JAKE: Great. Then later on, you could do a follow-up experiment adding another variable. Like, you could give some of the mice the chance to be more active, running on a wheel or something, and the others just sit around and don’t do much. Q25
CLARE: Or I could repeat the experiment but change the type of food I provided . . . or use mice with a different genetic structure. But I think your idea would be more interesting, I might think about that some more.
CLARE: So can I talk through a possible procedure for the experiment where mice are given a sugar supplement?
JAKE: Sure. I did a similar experiment in college actually.
CLARE: Great. So how many mice would I need?
JAKE: I’d say about 12. And all young ones, not a mixture of old and young. Q26
CLARE: OK. And I’d need two groups of equal sizes, so six in each group. And how would I tell them apart? I suppose I could put some sort of tag on one group… or just mark them in some way?
JAKE: You could use food colouring, that wouldn’t hurt them. Q27
CLARE: Perfect. Then each group would go into a separate cage, and one group, let’s call them group A, would be the control group. So they’d just have ordinary mouse food. I suppose you can buy that?
JAKE: Yes, it comes in dry pellets.
CLARE: And the other group would have the same as the first group, but they’d also have the extra sugar.
JAKE: Would you just give them straight sugar?
CLARE: I might be better to give them something like cereal with it. Q28
JAKE: Hmm. Then you’d need to weigh the mice, I should think once a week. And you’d need an electronic balance.
CLARE: But we can’t hold them on the balance, or it’d affect the reading.
JAKE: Exactly. So you need something called a weighing chamber to stop the mice from running away. It sounds complicated, but actually you can just use a plastic box with holes in the top. Q29
CLARE: OK. So once we’ve measured the weight gain of each mouse we can work out the average for each group, as well as the standard deviation. And then see where we go from there. That sounds cool, I think the students will enjoy it. Q30
JAKE: Yes. One thing…
C. Câu hỏi
PART 3 Questions 21–30
Questions 21–25
Choose the correct letter, A, B, or C.
Science experiment for Year 12 students
1. How does Clare feel about the students in her Year 12 science class?
2. How does Jake react to Clare’s suggestion about an experiment based on children’s diet?
3. What problem do they agree may be involved in an experiment involving animals?
4. What question do they decide the experiment should address?
5. Clare might also consider doing another experiment involving:
Questions 26–30
Complete the flowchart below.
Choose FIVE answers from the box and write the correct letter, A–H, next to Questions 26–30.
A Size
B Escape
C Age
D Water
E Cereal
F Calculations
G Changes
H Colour
Choose mice which are all the same 26 . |
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Divide the mice into two groups, each with a different 27 . |
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Put each group in a separate cage. Feed group A commercial mouse food. Feed group B the same, but also sugar contained in 28 . |
↓
Take measurements using an electronic scale. Place them in a weighing chamber to prevent 29 . |
↓
Do all necessary 30 . |
Điểm số của bạn là % - đúng / câu
D. Đáp án và giải thích
Test 3: Listening Section 3
Listening Section 3: Science experiment for Year 12 students (Thí nghiệm khoa học của học sinh lớp 12)
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Section 3: Questions 21-25 Dạng MCQ Cách làm:
Lưu ý: Ta có thể loại trừ đáp án bằng cách lần lượt trả lời 2 câu hỏi:
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21. How does Clare feel about the students in her Year 12 science class? |
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C. frustrated at their lack of interest in the subject Nhận xét:
Cụ thể:
⇒ Đáp án đúng là C |
Clare: Not brilliant. I’m really struggling with my Year 12 science class. […] Clare: It’s just that they don’t seem to think that science has anything to do with their lives. It’s depressing. They listen to what I say, and I gave them a test last week and the results weren’t too bad, but there’s no real engagement. |
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A. worried that they are not making progress Nhận xét:
Cụ thể:
⇒ Đáp án A là FALSE |
Clare: […] They listen to what I say, and I gave them a test last week and the results weren’t too bad |
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B. challenged by their poor behaviour in class Nhận xét:
Cụ thể:
⇒ Đáp án B là FALSE |
Jake: Are they hard to control? Clare: Well, I don’t have discipline problems as such. |
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22. How does Jake react to Clare’s suggestion about an experiment based on children’s diet? |
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B. He feels some of the data might be difficult to obtain. Nhận xét:
Cụ thể:
⇒ Đáp án đúng là B |
Clare: I have to design an experiment for them to do. I was wondering about something on the children’s diets Jake: […] but you’d also need to have access to the children’s medical records and I don’t think people would be happy about that: confidentiality would be an issue. If you could get the right data, the conclusions might be significant, but I suspect it’s not going to be easy. |
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A. He is concerned that the results might not be meaningful. Nhận xét:
Cụ thể:
⇒ Đáp án A là FALSE |
Jake: If you could get the right data, the conclusions might be significant |
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C. He suspects that the conclusions might be upsetting. Nhận xét:
Cụ thể:
⇒ Đáp án C là NOT GIVEN |
Jake: If you could get the right data, the conclusions might be significant Clare: Right Jake: Have you thought about doing an experiment using animals? Clare: Wouldn’t that be upsetting for the children? |
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23. What problem do they agree may be involved in an experiment involving animals? |
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A. Any results may not apply to humans.
Nhận xét:
Cụ thể:
⇒ Đáp án đúng là A |
Jake: Have you thought about doing an experiment using animals? Clare: But if we found out that, say, a particular diet affects the health of animals, the same thing wouldn’t necessarily be true for people,would it? Jake: No that’s true |
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B. It may be complicated to get permission. Nhận xét:
Cụ thể:
⇒ Đáp án B là FALSE |
[…] Clare: Would I have to get permission to use animals? Jake: Yes, you’d have to submit an outline of the experiment and fill in a form, but it’s quite straightforward. |
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C. Students may not be happy about animal experiments. Nhận xét:
Cụ thể:
⇒ Đáp án C là FALSE |
Jake: Have you thought about doing an experiment using animals? Clare: Wouldn’t that be upsetting for the children? Jake: Well, the animals don’t have to be harmed in any way. It could just be an experiment where they’re given a certain diet and the effects are observed. |
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24. What question do they decide the experiment should address? |
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A. Are mice capable of controlling their food intake? Nhận xét:
Cụ thể:
⇒ Đáp án đúng là A |
Clare: In fact, maybe the focus could be on whether mice can control their own diet. Jake: So, what happens when they have access to more sugar that they don’t really need? Clare: Exactly. Do they eat it or do they decide to leave it? |
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B Does an increase in sugar lead to health problems? Nhận xét:
Cụ thể:
⇒ Đáp án B là NOT GIVEN |
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C How much do supplements of different kinds affect health? Nhận xét:
Cụ thể:
⇒ Đáp án C là NOT GIVEN |
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25. Clare might also consider doing another experiment involving |
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C. varying amounts of exercise. Nhận xét:
Cụ thể:
⇒ Đáp án đúng là C |
Jake: Like, you could give some of the mice the chance to be more active, running on a wheel or something, and the others just sit around and don’t do much. Claire: But I think your idea would be more interesting, I might think about that some more. |
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A. other types of food supplement.. Nhận xét:
Cụ thể:
⇒ Đáp án A là NOT GIVEN |
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B. different genetic strains of mice. Nhận xét:
Cụ thể:
⇒ Đáp án B là FALSE |
Claire: […] I could repeat the experiment but change the type of food I provided . . . or use mice with a different genetic structure. But I think your idea would be more interesting, I might think about that some more. |
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Questions 26-30 Dạng Diagram Labeling Cách làm:
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26. Choose mice which are all the same ____ Từ cần điền là một danh từ , liên quan đến việc chọn những con chuột có cùng cái gì Cụ thể:
⇒ Đáp án là C. age |
Clare: Great. So how many mice would I need? Jake: I ’d say about 12. And all young ones, not a mixture of old and young. |
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27. Divide the mice into two groups, each with a different ____ Từ cần điền là một danh từ, nói về việc 2 nhóm chuột có gì khác nhau. Cụ thể:
⇒ Đáp án là H. color |
Clare: OK. And I ’d need two groups of equal sizes, so six in each group. And how would I tell them apart? I suppose I could put some sort of tag on one group . . . or just mark them in some way? Jake: You could use food colouring, that wouldn’t hurt them. |
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28. Feed group B the same, but also sugar contained in ____ Từ cần điền là một danh từ Cụ thể:
⇒ Đáp án là E. cereal |
Clare: And the other group would have the same as the first group, but they’d also have the extra sugar. Jake: Would you just give them straight sugar? Clare: It might be better to give them something like cereal with it. |
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29. Place them in a weighing chamber to prevent ____ Từ cần điền là danh từ, liên quan đến việc đặt những con chuột vào một buồng cân để ngăn chặn điều gì Cụ thể:
⇒ Đáp án là B. escape |
Jake: Exactly. So you need something called a weighing chamber to stop the mice from running away. |
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30. Do all necessary ____ Từ cần điền là một danh từ, liên quan đến việc cần làm gì đó cần thiết Cụ thể:
⇒ Đáp án là F. calculations |
Clare: OK. So once we’ve measured the weight gain of each mouse we can work out the average for each group, as well as the standard deviation. |
