考前必讀：托福經(jīng)典閱讀加試--蜜蜂

蜜蜂

蜜蜂的溝通模式

講小蜜蜂。分為 honeybee和worker bee。講了honeybee是怎么尋找蜜源和如何告訴同伴蜜源的位置的。開(kāi)頭先說(shuō)蜜蜂和 termite白蟻 與很多 Species 不同，他們是 social。蜜蜂是一個(gè)是由社會(huì)分工合作的動(dòng)物(有題問(wèn)他們有什么共同點(diǎn))，交流因此就變得很重要(有題)。然后科學(xué)家們就開(kāi)始用他們的聰明才智研究小蜜蜂了。開(kāi)始以為是honeybee是靠scent交流，然后某德國(guó)科學(xué)家研究發(fā)現(xiàn) scout 用舞蹈來(lái)告訴工蜂蜜源的遠(yuǎn)近，遠(yuǎn)的用八字舞，近的用圓圈舞。他因此獲得炸藥獎(jiǎng)。交流的內(nèi)容靠跳 8 字舞或者 circle 區(qū)別 distance，而不是食物的類別(有題)。原來(lái) 發(fā)現(xiàn)蜜蜂找到窩以后跳舞是指示food type，后來(lái)發(fā)現(xiàn) more than that。跳舞還指示出了direction and distance。跳舞分兩種一種是 nectar花蜜 dance 另一種 pollen花粉 dance，有一道題問(wèn)這個(gè)的，nectar 是跳圓圈舞，pollen 是跳 8 字舞。但是一直有科學(xué)家懷疑 這個(gè)說(shuō)法直到 1989 年，一些科學(xué)家為了驗(yàn)證他的理論做了 machine bees 模仿 scout，就是不去有食物處(這里有考題問(wèn)機(jī)器蜜蜂和其他小蜜蜂有什么不同)，發(fā)現(xiàn) robot使用這些動(dòng)作果然可以向工蜂有效傳遞信息。采蜜只是跳舞來(lái)做一些指示。最后發(fā) 現(xiàn)了小蜜蜂帶回來(lái)的信息和 wind 無(wú)關(guān)(這里有考題問(wèn) except 的問(wèn)題，其他選項(xiàng)是 direction, distance 還有一個(gè)忘了)

Bees

Flowers provide food for bees. The bees collect tiny grains of pollen and a sweet liquid called nectar from the blossoms they visit. They make honey from the nectar, and use both honey and pollen as food.

During their food-gathering flights, bees spread pollen from one flower to another, thus pollinating (fertilizing) the plants they visit. This enables the plants to reproduce.

The honey bee colony

A typical honey bee colony is made up of one queen, tens of thousands of workers, and a few hundred drones雄峰.

Honey bees live in hives. The hive is a storage space, such as a hollow空的 tree or a box, which contains a honeycomb蜂窩. The honeycomb is a mass of six-sided compartments隔間 called cells.

Worker bees build the honeycomb of wax produced by their bodies. The wax oozes滲出 through small pores (holes) in the body and forms tiny white flakes on the outside of the abdomen.

They also collect a sticky substance bee glue, from certain kinds of trees.

The body of the honey bee

A bee has five eyes-three small ones that form a triangle on top of its head, and a large compound eye on each side of its head.

Honey bees were the first insects known to be able to distinguish colors. Bees have three kinds of color-sensitive cells in their eyes. These visual cells are especially sensitive to blue, yellow, and ultraviolet rays, which humans cannot see.

The sting of a worker bee is straight, with barbs (hooks) on it. When the bee thrusts the sting into flesh, the barbs hold tight, and the stinger蟄針 pulls out of the bee's body.

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