Narrator: Listen to part of a lecture in a biology class. Professor: So, we've been talking about animal communication, and today I want to focus on a fascinating example: the waggle dance of honeybees. When a forager bee finds a good food source, it returns to the hive and performs a series of movements on the vertical surface of the honeycomb. The dance consists of a figure-eight pattern, with a straight run in the middle. The angle of this straight run relative to vertical indicates the direction of the food source in relation to the sun. For example, if the bee runs straight upward, the food is directly toward the sun. The duration of the waggle run communicates the distance—the longer the run, the farther the food. But here's the intriguing part: recent research suggests that the dance isn't just about location. The number of repetitions and the vigor of the dance may also convey the quality of the food source, like its sugar concentration. So, bees aren't just giving directions; they're also persuading their hive mates to visit that particular spot.
❓ Pregunta What does the professor say about the waggle dance of honeybees?
A. A) The angle of the dance indicates the distance to the food source.
B. B) The dance communicates both the location and the quality of the food.
C. C) The dance is performed only when the food source is very close.
D. D) The straight run's duration shows the direction relative to the sun.
✅ Respuesta correcta
B) The dance communicates both the location and the quality of the food.
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
