Unit 22 Bees

Questions 1.How do honey bees communicate with each other? 2.What are they able to tell each other? They do different dances, a circle dance and a wagging dance. They are able to tell each other that food has been discovered and how far away the feeding place is.

Lesson 85 The Language of Honey bees (1)

Discussion 1. What does the word “communication” mean? To pass information/orders, etc. to someone or to an animal. 2. What made it easier to do research on the language of honey bees? The development of the modern beehive in 1851.

3. What made Von decide to carry out his experiments? He had noticed that bees quickly discovered food, and seemed to be able to communicate this news to each other. 4. What did Von Frisch do in order to be able to watch the bees scientifically? He built a special hive with one honeycomb and a glass wall; he marked the bees with little spots of color.

5. Why might surrounding bees be excited by a dance? Because it communicated news of food. 6. What showed that the other bees understood the massage of the first bee? They copied the movements of the first dancer. 7. What does the circle dance mean? Food is near. 8. What does the wagging dance mean? Food is far away.

1. tell apart 识别，辨别 e.g. Can you tell the two things apart? The twins are so much alike that their own mother can hardly tell them apart. Language points

2. troop n. 一队，一群 a troop of young pioneers / visitors v. 结队而行，成群涌向 e.g. The game was over and the players trooped home. The students trooped behind the teacher into the museum.

3. copy v. 抄写，复写，模仿，仿效 e.g. He is busy copying his paper. We are going to buy a set of office copying machine. Please copy my action. = Please act as I do. You should copy his strong points, not his weak points.

Lesson 85 The Language of Honey bees (2)

The farther away the feeding station, the slower the wagging dance; the direction of the wagging dance tells the direction of the feeding place. Reading Comprehension What else did Von Frisch notice about the wagging dance?

A circle dance A wagging dance A faster wagging dance A slower wagging dance Food is near. Food is far away. Food is closer. Food is farther away. Note making

1.come up 显现, 出现： 升到地平线上 ; 提升， 靠近，接近： The question never came up. 从不曾发生过这个问题 The sun came up. 太阳升起了 a general who came up from the ranks. 按等级晋升的将军 came up and said hello 靠近并打招呼 Language points

2. come to light 发现，暴露 (to be discovered / exposed) e.g. New facts about the ancient Egypt have recently come to light. The money didn’t come to light until the old man was going to die.

3. set out 出发, 开始 set out to do sth. set about doing sth. After supper Mary set out to clear the table. After supper Mary set about clearing the table. 晚饭后, 玛丽动手收拾餐桌。 set to work 着手 [ 开始 ] 工作 He has set to learning English. 他已开始学习英语。

4. head v. 朝某方向前进 e.g. We are heading toward the mountain village. They saw the enemy troops heading northeast. head for 开往，前往（某地） e.g. The ship is heading for London for repairs. We set sail at dawn and headed straight for Shanghai.

35. point v. 指向，表明 … 的位置或方向 e.g. The hands of the clock pointed to half past one. He pointed to where the village lay.

6. make a beeline for 走直路，走近路 e.g. As he spoke he made a beeline for the door. If you want to catch up with the team, you’d better make a beeline for them.