Questions 56-60
 Honey bee dancing is perhaps the most fascinating aspect of their biology. Dance isperformed by a worker bee that has returned to the honey comb with pollen ornectar. The dances constitute a language that “tells” other workers where the food islocated. By signaling both distance and direction with particular movements, theworker bee uses the dance language to recruit and direct other workers in gatheringpollen and nectar. Dancing language of honey bees can be of three types: rounddance, sickle dance and waggle dance.
⊙ Round Dance
When a food source is located very close to the hive, generally less than 50meters, a forager performs a round dance by running around in narrow circles,suddenly reversing direction to her original course. She may repeat the dance severaltimes at the same location or move to another location on the comb to repeat it. Afterthe round dance has ended, she often distributes food to the nearby bees. A rounddance, therefore, communicates distance, but not direction.
⊙ Sickle Dance
Food sources that are at intermediate distances, between 50 and 150 meters from thehive, are described by the sickle dance. This dance is crescent-shaped and representsa transitional dance between the round dance and a waggle dance.
⊙Waggle Dance
The waggle dance, or wag-tail dance, is performed by bees foraging at foodsources that are more than 150 meters from the hive. This dance, unlike the rounddance, communicates both distance and direction. A bee that performs a waggledance runs straight ahead for a short distance, returns in a semicircle to the startingpoint, runs again through the straight course, then makes a semicircle in the oppositedirection to complete a full figure ‘8’ circuit. While running the straight-line courseof the dance, the bee’s abdomen wags vigorously from side to side. This vibration ofthe abdomen produces a tail-waggling motion. At the same time, the bee emits abuzzing sound, produced by wing-beats at a low audio frequency of 250 to 300 Hz.As the distance to the food source increases, the duration of the waggling portion ofthe dance also increases.
【題組】56. What is the article about?
(A) Life of honey bees.
(B) Food sources for honey bees.
(C) How honey bees communicate through dancing.
(D) How well honey bees dance.