การอ่าน TOEFL

📖 เนื้อเรื่อง

❓ คำถาม According to the passage, which of the following best describes the main idea regarding keystone species?

A. A. Keystone species are always top predators whose removal causes a decrease in biodiversity.
B. B. Keystone species have a disproportionately large ecological impact relative to their abundance, and their loss can trigger cascading effects.
C. C. The keystone species concept is universally accepted and has no limitations in its application.
D. D. Keystone species are defined solely by their abundance and size in a given ecosystem.

✅ คำตอบที่ถูกต้อง

B. Keystone species have a disproportionately large ecological impact relative to their abundance, and their loss can trigger cascading effects.

TOEFL Reading Tips

Skim the questions first, underline keywords, then locate in the passage
Watch for paraphrasing; correct answers are often reworded
Infer vocabulary meaning from context, not just memory
Base inferences on the passage; avoid over-extrapolation
Manage time: about 18 minutes per passage

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