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Practice Listening: Highlight Incorrect Words ID: #50986 Short Button Cell
Instructions ›
You will hear a recording. Below is a transcription of the recording. Some words in the transcription differ from what the speaker said. Please click on the words that are different.
* Click on the words that are different from what you hear
Result:

Correct Transcript:

They're called button cells, coin cells or watch batteries. By any name, these tiny, round batteries pose a choking danger to small kids. And if a child succeeds in swallowing a button cell, the battery may short-circuit in the moist esphageal environment, burning the tissue. A few thousand kids wind up in emergency rooms each year after swallowing a button battery. But a team of Harvard and M.I.T. researchers that includes prolific inventor Robert Langer thinks they have a partial solution: a protective coating. The scientists covered batteries with a material—technically a quantum-tunneling composite—in which microparticles of conductive metal are suspended in an insulating layer. Under most circumstances, including inside of a child, the layer is nonconductive.
AI explanationShows the answer. Tap to open.
Printed "halfpennies", the speaker says "batteries"

Explanation: In the audio you hear "these tiny, round batteries". The printed and spoken words start with different letters, and both end the same.

Printed "saviour", the speaker says "esphageal"

Explanation: Here the speaker says "moist esphageal environment". The printed word starts with a different letter and ends differently, so it does not fit.

Printed "pukes", the speaker says "includes"

Explanation: The speaker says "that includes prolific inventor". The printed and spoken words start with different letters, though they end the same.

Printed "mileages", the speaker says "scientists"

Explanation: Listen for "The scientists covered batteries". The printed word begins with a different letter, and "mileages" makes no sense before "batteries".

Printed "baffling", the speaker says "quantum tunneling"

Explanation: You will hear "a quantum-tunneling composite". The printed word starts with a different letter, so follow the audio.

"Robert" matches the audio

Explanation: "prolific inventor Robert Langer" has a well known name that looks like a trick. The speaker says it exactly, so do not click it.

"conductive" matches the audio

Explanation: "microparticles of conductive metal" might seem odd next to insulating, but the speaker says "conductive" exactly. Do not click it.

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