Question: Using the examples from the lecture, explain the professor's main point about aggressive mimicry.
🎧 听力讲座
Today, we're going to talk about a fascinating concept in biology called 'mimicry'—specifically, how certain animals use mimicry not just to hide from predators, but to actively lure prey. This is known as aggressive mimicry. The key idea is that the mimic resembles something attractive or harmless to its prey, tricking them into coming close enough to be captured. Let me give you two examples. First, consider the anglerfish. It lives in the dark depths of the ocean. It has a fleshy growth on its head that glows, resembling a small, tasty fish. When a smaller fish swims toward the light, thinking it's a meal, the anglerfish snaps it up. Second, think of the orchid mantis. This insect has a body that looks exactly like a pink orchid flower. It sits on a plant, and when a bee or butterfly lands on it to collect nectar, the mantis grabs it and eats it. In both cases, the predator uses deception to exploit the natural instincts of its prey—the attraction to light or to flowers—to its advantage.
📝 参考答案
TOEFL Speaking Task 4 Scoring Rubric
Content Accuracy: Accurately restate the professor's main point
Information Completeness: Include key examples and details from the lecture
Language Use: Grammatical accuracy, vocabulary range, clarity
Delivery: Fluency and clarity of speech
Scored 0-30 based on holistic scoring (original 0-4, scaled to 30).
Answering Tips
Take quick notes on the main point and two examples during the lecture
Use the 20-second preparation time to organize your response
Start by stating the professor's main point, then explain with examples
Use template phrases: "The professor explains... For example..."
Keep your response within 60 seconds
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