Question: Using the examples from the lecture, explain the professor's main point about aggressive mimicry and how it helps animals hunt.
🎧 听力讲座
Today we're going to talk about how animals use camouflage, but not just for hiding from predators. Camouflage can also be used for hunting. This is called aggressive mimicry. Let me give you two examples. First, consider the leaf-mimicking praying mantis. This insect has a body that looks exactly like a green leaf, including veins and even spots that look like damage. It sits motionless on plants, and when a smaller insect, like a fly, comes near, thinking it's just a leaf, the mantis strikes quickly and catches it. The camouflage helps the mantis get close to its prey without being noticed. Second, think about the anglerfish, which lives in the deep, dark ocean. It has a special fin that acts like a fishing rod with a glowing lure at the tip. Small fish are attracted to the light, thinking it's something to eat. When they come close to investigate, the anglerfish opens its huge mouth and swallows them. So in both cases, the animal's appearance or body part is used not to hide from enemies, but to trick and capture prey.
📝 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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