#RA-3230Read AloudCore & AcademicMedium
Sites of Crystals
Official Question Material
Prep: 30-40 Seconds
Surface active sites of crystals often govern their relevant surface chemistry, yet to monitor them in situ in real atmosphere remains a challenge. Using surface specific sum frequency spectroscopy, we identified the surface phonon mode associated with various active sites.
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Pearson Official Scoring Guide for Read Aloud
Scored Enabling Skills
- Reading (Content)
- Speaking (Oral Fluency & Pronunciation)
Timing Standard
Response Window: 35-40 Seconds
💡 Examiner Strategy & Pro Tip:Keep a continuous rhythm. Never stop to correct mistakes or repeat words; pausing hurts fluency more than minor mispronunciations.