5
Answer: ASet 4: Text Structure (Intermediate)
Explanation
PASSAGE
Enzymes are biological catalysts. They speed up reactions without being consumed. For example, amylase in saliva breaks down starch into sugar instantly.
Which choice best describes the function of the third sentence?
A. It provides a concrete example of the function described earlier.✓ Correct
B. It contradicts the definition of an enzyme.
C. It lists the chemical formula for sugar.
D. It explains how to make enzymes in a lab.
Detailed Explanation
Function: Speed up. Example: Amylase breaks down starch.
Key Evidence:
• "For example"
Why others are wrong: B (Supports it.), C (No formula.), D (Biological, not lab.).