#RA-3024Read AloudCore & AcademicEasy

Liquid Batteries

Official Question Material
Prep: 30-40 Seconds

Researchers have found a way to convert the aromatic substance vanillin into a redox active electrolyte material for liquid batteries. The technology is an important step towards ecologically sustainable energy storage.

Instant AI Speech & Writing Feedback

Practice This Question with Real-Time AI Scoring

Record your voice or submit your writing to get official Pearson-aligned scores (10-90) across Oral Fluency, Pronunciation, Grammar, and Content in 1.2 seconds.

Launch AI Practice Now

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.