Question: Using the examples from the lecture, explain the professor's main point about behavioral flexibility.
🎧 听力讲座
Today, we're going to talk about a fascinating concept in animal behavior called 'behavioral flexibility.' This refers to an animal's ability to adjust its behavior to new or changing situations, rather than relying on fixed instincts. Behavioral flexibility is crucial for survival when environments change unexpectedly. Let me give you two examples. First, consider the raccoon. Raccoons are known for their ability to adapt to urban environments. In the wild, they forage near streams for food, but in cities, they have learned to open trash cans and even doors of houses to find food. This adjustment is not instinctual; it's learned through trial and error, showing flexibility. Second, think about the octopus. In laboratory settings, octopuses have been observed changing their hunting strategies based on the type of prey. For instance, when facing a slow-moving crab, they might pounce directly, but when encountering a fast shrimp, they use a more cautious, stealthy approach. These adjustments demonstrate how octopuses modify their behavior in response to specific challenges. So, in both cases, behavioral flexibility allows these animals to thrive in diverse or changing conditions.
📝 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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