TOEFL Reading Complete the Words Practice #025 - The First Sound Recordings

Complete the Words designed to build passage comprehension, evidence use, and efficient reading decisions.

1 questionsAbout 3 minutesmedium

What you will practice

Reading comprehension
Evidence and inference
Time management

Topic: Technology · Complete the Words

Passage preview

Early inventors knew that sound created vibrations, but preserving those vibrations was difficult. In the nineteenth century, experimenters developed devices that directed a voice toward a thin diaphragm. The moving diaphragm pushed a stylus, which traced a…

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