Passe 1
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🎧 Pratique IELTS écoute et expression
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Passe 2
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📝 Transcription dialogue IELTS Speaking
I want to summarise recent air quality monitoring in our city. The overall average numbers might appear reassuring at first. But when we look at hourly data, short peaky spikes become clear. These peaky patterns appear most often in the early mornings and late evenings. We also saw a seasonal effect. Winter had the sharpest peaks, especially on cold, still days. To trust the results we made an adjustment to the sensors last spring. That adjustment improved consistency between stations. At the same time, local trees were planted in one neighbourhood as a mitigation attempt. The city centre showed lower particulate matter on average. Yet nearby suburbs registered higher fine particles, an unexpected change. Complaints to the council increased even though some pollutants fell in the centre. One plausible explanation is that visible smog and brief high peaks affected people more than the averages implied. Traffic during rush hour and domestic heating are likely triggers for these spikes. Nitrate levels dropped in some sites, a detail that surprised us. We recommended small policy adjustments, better public information, and continued calibration of monitors to avoid misreading trends.
📝 📚 Questions de pratique IELTS
1
What did the speaker say became clear when hourly data was examined?
Réponse incorrecte
Réponse correcte:
A
Explication:
Correct: The speaker explicitly mentions that hourly data revealed short peaky spikes. B is wrong because the speaker noted peaks rather than a steady decline. C is wrong because the speaker described variation. D is wrong because the peaks were said to occur in mornings and evenings, not constantly at midday.
2
Which area showed an unexpected increase in fine particles?
Réponse incorrecte
Réponse correcte:
B
Explication:
Correct: The passage states that nearby suburbs registered higher fine particles, which was unexpected. A is incorrect because the city centre actually showed lower particulate matter on average. C and D are not mentioned as having this unexpected increase and are therefore incorrect.
3
What technical step did the team take last spring to improve data reliability?
Réponse incorrecte
Réponse correcte:
A
Explication:
Correct: The speaker said they made an adjustment to the sensors last spring, improving consistency. B is wrong because replacement of all monitors was not mentioned. C is wrong; there was no mention of reducing stations. D is not stated and would contradict the goal of representative monitoring.
4
Why does the speaker suggest traffic is a likely trigger for the peaks?
Réponse incorrecte
Réponse correcte:
A
Explication:
Correct: The speaker linked the timing of the peaky patterns—early mornings and late evenings—with traffic and domestic heating as likely triggers. B is incorrect; the speaker did not say traffic fell. C is irrelevant and not supported by the passage. D is incorrect because while calm weather was mentioned, the speaker did not attribute peaks to a lack of wind alone.
5
Why might public complaints have increased despite lower average pollutant levels in the centre?
Réponse incorrecte
Réponse correcte:
A
Explication:
Correct: The speaker suggested that visible smog and brief high peaks could explain increased complaints even when averages fell. B is incorrect; the nitrate drop was noted as surprising but not linked to increased complaints. C is incorrect because tree planting was described as mitigation, not a cause of complaints. D is unsupported and contradicts the speaker's emphasis on improved data transparency and calibration.
6
In this context, what does the word 'peaky' most nearly mean?
Réponse incorrecte
Réponse correcte:
A
Explication:
Correct: 'Peaky' is used to describe patterns with sharp, brief spikes in pollution. B is wrong because 'peaky' implies concentration at peaks rather than uniform distribution. C is incorrect; 'peaky' does not mean low. D is wrong because 'peaky' refers to short spikes rather than gradual long-term rises.
7
Which season did the speaker identify as having the sharpest pollution peaks?
Réponse incorrecte
Réponse correcte:
C
Explication:
Correct: The passage states that winter had the sharpest peaks, especially on cold, still days. A and B are incorrect because they were not identified as having the sharpest peaks. D is incorrect; spring was mentioned only in relation to when sensors were adjusted, not as the season with the sharpest peaks.
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