Passe 1
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🎧 Pratique IELTS écoute et expression
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Passe 2
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Passe 4
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📝 Transcription dialogue IELTS Speaking
I want to discuss the potential for simple design changes to reduce material problems in everyday objects. One common issue is when thin boards or panels begin to curl at the edges after exposure to moisture. Moisture can accumulate over time and cause stresses that lead to deformation. In buildings, engineers often add reinforcement such as thin metal strips to stop that curl. That kind of reinforcement is a low-cost fix. But fixes should be tested with some rigor. Scientific rigor helps distinguish robust solutions from ones that only seem to work. A small study in 2018 claimed a 60 percent reduction in warping after reinforcement was added. However, that trial had only twenty samples, and later work found smaller effects of about thirty-five percent in a larger sample. That illustrates how results can accumulate and change as more data are added. Designers must consider the potential long-term consequences, not just initial improvements. In workshops, people also use clamps and adhesive to stop the curl at the edges during drying. Moisture and dust accumulate in joints, which can reduce the effectiveness of adhesive over months. Engineers refer to material reinforcement as both a physical support and as a strategy to distribute stress. When I say 'rigor' I mean careful measurement, repeated trials and clear reporting. In summary, modest changes have the potential to help, but only when tested with rigor and supported by proper reinforcement.
📝 📚 Questions de pratique IELTS
1
What common problem do thin boards or panels often experience according to the speaker?
Réponse incorrecte
Réponse correcte:
A
Explication:
Correct: The speaker says thin boards or panels begin to 'curl at the edges after exposure to moisture.' Option B is incorrect because cracking when cut is not mentioned. Option C is wrong; discoloration from sunlight is not discussed. Option D is implausible and not mentioned.
2
Which specific reinforcement example does the speaker mention engineers using?
Réponse incorrecte
Réponse correcte:
A
Explication:
Correct: The passage states engineers often add reinforcement such as 'thin metal strips.' Option B is incorrect because thick wooden beams were not mentioned. Option C is wrong; rubber coatings are not discussed. Option D is unrelated and not in the text.
3
What did the small 2018 study claim?
Réponse incorrecte
Réponse correcte:
A
Explication:
Correct: The speaker mentions a small 2018 study claiming a '60 percent reduction in warping' after reinforcement. Option B is incorrect because 35 percent was reported by later, larger work. Option C is wrong; the small study claimed a large improvement, not no difference. Option D is incorrect; dust accumulation is mentioned elsewhere but not as the main claim of the 2018 study.
4
Why does the speaker suggest the later work found a smaller effect than the 2018 study?
Réponse incorrecte
Réponse correcte:
A
Explication:
Correct: The speaker explains the 2018 trial had 'only twenty samples,' implying the small sample size could have led to an overestimate. Option B is not supported; the passage does not say the reinforcement differed. Option C is wrong; adhesive failure is discussed in a general context but not as the reason for the different results. Option D is not mentioned and is speculative.
5
What does the speaker imply about adopting modest design changes?
Réponse incorrecte
Réponse correcte:
A
Explication:
Correct: The speaker repeatedly stresses testing 'with rigor' and that modest changes have 'potential' only when tested properly. Option B contradicts the emphasis on rigor. Option C is incorrect; the speaker says modest changes can help. Option D is too narrow; while boards are discussed, the speaker does not limit the idea to wooden furniture.
6
In this passage, what is the best meaning of the word 'accumulate'?
Réponse incorrecte
Réponse correcte:
A
Explication:
Correct: 'Accumulate' is used to describe moisture and dust building up over time in joints. Option B is incorrect; it means the opposite. Option C is wrong; it does not mean disappear. Option D is unrelated.
7
Which detail from the passage is most likely a deliberately cautious recommendation rather than a proven fact?
Réponse incorrecte
Réponse correcte:
A
Explication:
Correct: The recommendation to consider long-term consequences and test changes with rigor is phrased as advice, not an established fact. Option B is incorrect because the speaker qualifies the 2018 study as small and later work found smaller effects. Option C is false; the passage says dust can reduce adhesive effectiveness. Option D is too absolute; clamps are mentioned as a practical measure, but the speaker does not claim they always work.
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