PTE Listening
Fill in the Blanks
1 questions. Answer them all, then submit once for your section score.
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1.
Fill in the Blanks
You will hear a recording. Type the missing word in each blank exactly as you hear it.
Engineers are increasingly turning to self-healing polymers that repair minor cracks without any human intervention. These materials contain microscopic filled with a bonding , which rupture when damage occurs and seal the fracture automatically. Researchers believe this innovation could dramatically extend the of components used in bridges, aircraft wings, and electronic .