您IP所在的地区,暂不支持官方真题素材

建议使用其他功能进行写作练习

返回
小站备考
托福
托福口语
Official38口语真题

托福official38口语task4 Phoresy题目答案+范文音频

Phoresy
Animals often have to move from place to place to obtain resources. Most animals do so using their own physical effort, but animals of certain species may not be able to transport themselves efficiently in order to access the resources they need. These animals may make use of another animal species to transport them, without causing any injury to the other species. This relationship is known as phoresy. Phoresy, which is a temporary relationship, benefits the passenger species and causes little or no harm to the species doing the transporting.

听力材料:
听力原文

Now listen to part of a lecture on this topic in a biology class.

So, here's a good example of this. Mites are very small, insect-like creatures. Mites live in tropical climates and feed on nectar and pollen and flowers, but these tropical flowers don't last long. They wilt and fall off quickly and so the mites need to find new flowers in order to get more nectar and pollen to eat, but the mites can't fly and they are so small that it would take them awhile and a lot of effort to climb down one flower, crawl to another one, and climb all the way up again. So, how do they get to the next flower? Well, there's a bird: the hummingbird. Hummingbirds eat the nectar from the same flowers as the mites, so when a hummingbird comes around and sticks its beak into the flowers to get the nectar out, the mites quickly climb onto the hummingbird. Well, as I mentioned, mites are pretty tiny, so the hummingbird isn't harmed in any way and all they do is stick to the hummingbird. Since the hummingbird also goes from flower to flower for nectar, it takes the mites along. Once the hummingbird gets to the next flower, the mites climb off and eat some pollen and nectar there on the new flower. Without the hummingbird carrying them from one flower to another, the mites would find it much more difficult getting food.

Question:

Explain how the example of the mite and hummingbird in the lecture, illustrates the concept of phoresy.

收藏
笔记
我的笔记
5000
保存
反馈
我的回答:
去答题
 后才能查看题目解析,还没有账号? 马上注册
示例回答:

This passage talks about a concept named phoresy. Phoresy refers to a temporary relationship in which one animal which is unable to move from one place to another depends on another animal to transport itself in order to get enough resources without causing any injury. In the lecture, the man takes mites as an example. He mentions that mites feed themselves on the nectar and pollen of certain kind of flower. However, they are too small to move from one flower to another. Luckily, there is also a kind of bird which also eat the same kind of flower. So the mite just need to stick to the bird and the bird can take it to a new flower. Also mites are tiny enough so they won’t cause any injury to the birds.

展开

学习页面

Medi

terr

土地

anean