英語(yǔ)聽(tīng)力文摘 昆蟲(chóng)是怎樣喝水的？

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昆蟲(chóng)是怎樣喝水的?

A: I was sitting on my Porsche yesterday,having a soda, and a wasp picked its head into the can and drink from my soda.For the sugar i konw that's why i drink soda.But the Garmin wondering about how different insects drink. I mean insects need water just like the rest of us.

B: You are right! Insects do need water.How they get their water depends a lot on their diets. Herbivorous insects, those that feed on plants, get most of their water from their preyfood because plants contain a lot of water.

But carnivorous insects often have to get their water from somewhere other than their prey, and often they'll go to plants for their water too, drinking from fruit maybe. Or they might sip from the morning dew or from raindrops or from edges of ponds or puddles.

If they’re blood suckers, they probably get their water from their food. It's worth noting that not all mouthparts are the same and this too affects the ways an insect is able to get water. There are basically two kinds of insect mouths.

There are chewers and suckers. Some chewers may have a difficult time trying to draw water from a pond, whereas getting their water from chewing a leaf is simple.

Suckers, on the other hand, have a tube-likemouthpart called a proboscis that allows them to get liquid by sucking or lapping, whether from the nectar of flowers or from a soda can.

A: Or from my arm, right?

B: That's true.

A: 昨兒我坐在我的保時(shí)捷里，喝著汽水，一只黃蜂將頭伸進(jìn)了我的瓶子，喝起了我的汽水.我知道我喝汽水是為了(補(bǔ)充)糖分，但是Garmin(一種導(dǎo)航)好奇不同的昆蟲(chóng)都是怎樣喝東西的呢?我的意思是昆蟲(chóng)也像我們一樣需要水分。

B: 是這樣的!昆蟲(chóng)確實(shí)需要水分。但是它們?cè)鯓语嬎艽蟪潭壬鲜侨Q與他們的飲食習(xí)慣。對(duì)于那些以植物為食的食草性昆蟲(chóng)來(lái)說(shuō)，大部分水分都是從食物中獲取的，因?yàn)橹参锖苡泻芏嗨帧?/p>

但是對(duì)于肉食性的昆蟲(chóng)來(lái)說(shuō)，它們就的從其它地方獲取水分，通常也是來(lái)自植物，或者水果。它們或許還會(huì)從晨露、雨水、池塘或者水坑邊進(jìn)水。

如果是吸血類(lèi)的，它們大概就是從食物中獲取水分。值得一提的是，昆蟲(chóng)的口器是不一樣的，這就大大影響了它們喝水的方式。昆蟲(chóng)的口器大概可分為兩類(lèi)。

它們便是咀嚼式口器及吸收式口器。一些咀嚼式口器在池塘邊喝水可能會(huì)有困難，所以通過(guò)咀嚼葉子來(lái)獲取水分會(huì)更簡(jiǎn)單。

而吸收式口器則有一個(gè)管狀叫做“喙”的部分，它可以讓昆蟲(chóng)通過(guò)吸或舔的方式獲得水分，不論是從花的花蜜中還是從汽水瓶都可以。

A: 從我的手臂也行，對(duì)吧?

B: 是的!