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1、2022年高中英语第三册(全一册)Unit14Zoology-Period2LetsreadGoals Talk about animals and animal behaviour Practise debating Integrative language practice Write an argumentative essayPeriod 2 Lets read!(THE LANGUAGE OF HONEY-BEES)GoalsLearn about the munication of beesLearn the ways scientists use to do researchPr
2、oceduresStep 1: Discussing in pairs1. How do people municate with each other?The way people use to municate with each otherSpoken language Written languageFacial expressions Hand gesturesPosture Body language2. How do animals municate?The way animals use to municate with each othersounds smellmoveme
3、nts touch with each otherfacial expressions body language posture3.How much do you know Professor Karl von Frisch, a famous zoologist?Karl von FrischFrisch is best known for his studies of bees. In 1919 he demonstrated that bees can be trained to distinguish between various tastes and odours. He fou
4、nd that while their sense of smell is similar to that of humans, their sense of taste is not as highly developed. He also observed that it is not limited to the quality of sweetness. He found that bees municate the distance and direction of a food supply to other members of the colony by two types o
5、f rhythmic movements or dances: circling and wagging. The circling dance indicates that food is within 75 m (about 250 feet) of the hive, while the wagging dance indicates a greater distance. In 1949 Frisch established that bees, through their perception of polarized light, use the Sun as a pass. He
6、 also found that they are capable of using this method of orientation when the Sun is not visible, apparently remembering patterns of polarization presented by the sky at different times of the day and the location of previously encountered landmarks.Bees are dependent on pollen as a protein source
7、and on flower nectar or oils as an energy source. Adult females collect pollen primarily to feed their larvae. The pollen they inevitably lose in going from flower to flower is important to plants because some pollen lands on the pistils (reproductive structures) of other flowers of the same species
8、, resulting in cross-pollination. Bees are, in fact, the most important pollinating insects, and their interdependence with plants makes them an excellent example of the type of symbiosis known as mutualism, an association between unlike organisms that is beneficial to both parties.Most bees have sp
9、ecialized branched or feathery body hairs that help in the collection of pollen. Female bees, like many other hymenopterans, have a defensive sting. Some bees produce honey from flower nectar. Honey bees and stingless bees monly hoard large quantities of honeya characteristic that is exploited by be
10、ekeepers, who harvest the honey for human consumption.There are about 20,000 species of bees worldwide. Some species may not yet have been discovered, and many are either not named or have not been well studied. Bees are found throughout the world except at the highest altitudes, in polar regions, a
11、nd on some small oceanic islands. The greatest diversity of bee species is found in warm, arid or semiarid areas, especially in the American Southwest and Mexico. Bees range in size from tiny species only 2 mm (0.08 in) in length to rather large insects up to 4 cm (1.6 in) long. Many bees are black
12、or gray, but others are bright yellow, red, or metallic green or blue.Step 2: Reading and judging Read the text quickly and decide whether the following statements are true or false.1. Scientists have interest in honey-bees because of the “language” they use to municate with each other.2. Professor
13、Karl von Frisch built special hives and a transparent wall to observe bees.3. After seeing one bees dance, the surrounding bees leave the hive and go to the feeding place directly.4. The bees from close feeding place perform a wagging dance.5. With a stop-watch, zoologists counted the time bees used
14、 to fly from the feeding place to the hive.6. The expression “to make a beeline for someone or something” means to go quickly along a straight course for somebody or something.7. Professor von Frisch did so much work on the munication of animals that he was rewarded a Nobel Prize in 1973.Step 3: Lis
15、tening and fillingListen to the tape and read the text, then fill the form below.ProblemsExperimentsResultsConclusionHow did one bee municate the news of food to other bees in its hive?Professor von Frisch marked some bees with little dots of colour.The marked bee performed a circle dance, and the surrounding bees copied it and left for the feeding place together.The circle dance municated the news of food.Did the dance convey more information?Professor von Frisch set up two feeding places, one close to the hive, the other much farther away, and marked the bees with two c
