5

Set 2: Text Structure (Intermediate)

Explanation

Answer: A

PASSAGE

Antibiotics kill bacteria. However, overuse of these drugs can lead to resistance. This means the bacteria evolve to survive the medication, making infections harder to treat.

Which choice best describes the function of the third sentence?

A. It explains the implication of the problem introduced in the second sentence.✓ Correct
B. It defines what an antibiotic is.
C. It argues that we should stop using medicine.
D. It describes a new type of bacteria.

Detailed Explanation

Problem: Resistance (Sentence 2). Implication: Harder to treat (Sentence 3).

Key Evidence:

• "resistance"

• "making infections harder to treat"

Why others are wrong: B (Defined in S1.), C (Warns of overuse, doesn't ban.), D (No specific type.).

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