TOEFL Reading Complete the Words Practice #029 - Why Glass Windows Became Clearer

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

1 questionsAbout 3 minuteshard

What you will practice

Reading comprehension
Evidence and inference
Time management

Topic: Arts & Literature · Complete the Words

Passage preview

Making flat, transparent window glass was once expensive and technically demanding. Early panes often contained bubbles, ripples, and uneven thickness because molten glass had to be blown or spun before it cooled. These imperfections distorted the view but…

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