chemicals - basic substances used in science, athlete - a person who plays sports very well, school janitor - a person who cleans and fixes things at school, fingerprint - the special mark on your finger, explosion - a loud and powerful blast, warn - to tell someone about danger, accidentally - by mistake, not on purpose, slip - to slide and almost fall, supplies - things people use to work or study, total - the whole amount; everything added together, bleed - to lose blood because of injury or illness, light bulb - a small glass object that makes light, turn up - to make the sound louder, have a break - to rest for a short time, strong enough to handle - able to do something difficult,

TOEFL Primary Listening L10

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