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 some animals use mimicry not just to hide from predators, but to actively attract prey. This is called 'aggressive mimicry.' The key point is that these animals resemble something harmless or attractive to their prey, allowing them to get close enough to strike. Let me give you two examples. First, the anglerfish. It lives in the deep, dark ocean. It has a glowing lure that dangles in front of its mouth, which looks like a small, tasty fish. Smaller fish are attracted to the light and come close, thinking it's food. But as soon as they get near, the anglerfish snaps them up. Second, consider the orchid mantis. This insect looks exactly like a pink or white orchid flower. It sits on a plant, and pollinating insects, like bees and butterflies, land on it thinking it's a real flower. Then, the mantis quickly grabs them and eats them. In both cases, the predator uses a deceptive appearance to lure prey within reach.
📝 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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