Digital SAT Practice Test: Text Structure & Purpose (Set 9)
This adaptive-style simulation simulates the real Digital SAT exam interface to help you master Text Structure & Purpose.
Set 9: Text Structure (Intermediate)
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Enzymes are biological catalysts. They speed up reactions without being consumed. For example, amylase in saliva breaks down starch into sugar instantly.
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Which choice best describes the function of the third sentence?
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