Listen to part of a lecture in a biology class. The professor is discussing animal communication.
Professor: Today, we're going to talk about the honeybee's waggle dance, a fascinating example of symbolic communication. Unlike many animals that use simple signals like alarm calls, honeybees convey precise information about distance and direction to a food source. The dance is performed on the vertical surface of the hive. The angle of the dance relative to gravity indicates the direction of the food source in relation to the sun. For example, if the bee dances straight up, the food is directly toward the sun. The duration of the waggle run, the part where the bee wiggles its abdomen, communicates the distance. A longer waggle run means the food is farther away. Interestingly, the accuracy of this dance diminishes if the hive is overcrowded or if the food source is very close, say less than 50 meters. In such cases, bees may switch to a simpler round dance, which only indicates that food is nearby without specifying direction. This shows how bees adapt their communication methods to the context.
❓ 문제 What does the professor say about the waggle dance when a food source is very close?
A. A) The dance is performed at a faster speed.
B. B) The bees use a round dance that lacks directional information.
C. C) The waggle run is longer to emphasize proximity.
D. D) The dance is performed on a horizontal surface.
✅ 정답
B) The bees use a round dance that lacks directional information.
TOEFL Listening Tips
Skim the questions first to predict the content
Watch for signal words in lectures and conversations (however, actually, in fact)
For main idea questions, focus on the beginning; for detail questions, focus on examples and data
For attitude questions, pay attention to the speaker's tone and word choice
Take notes on keywords; don't try to write down every word