托福TPO试题基本所有参加托福考生必做试题，在下文中上海新航道托福培训小编整理了托福TPO61口语原文+音频下载（第四部分），希望对大家有所帮助！

相关推荐：

托福TPO61口语原文+范文+音频下载(三部分)

托福TPO61口语原文+范文+音频下载(二部分)

托福TPO61口语原文+范文+音频下载(一部分)

托福TPO61听力答案+完整题目

托福TPO61阅读原文+题目+答案(完整版)

托福TPO61口语原文（第四部分）

Listen to part of a lecture in a biology class.

All animals need to be able to survive in a particular habitat. Some animal species rely on their speed for survival. Being able to run or fly quickly helps them to hunt, to capture prey. And it also helps them to escape from danger. Why are these animals so fast? Well These animals have developed physical adaptations that help them to run at high speeds. Let's discuss a couple of these adaptations. Some animals have specially adapted feet that allow them to travel fast over rough ground. Extremely fast animals may have feet that are very tough on the bottom. This helps them escape from a predator or capture prey more efficiently, since they can run after them at high speeds over rough ground without hurting their feet. For example, the cheetah, these large cats are among the fastest animals in the world, and many of them live in the African desert, where the ground is rough and also gets very hot. So cheaters have feet with tough pads on the bottom. These pads protect them from the hot sand and sticks and stones, so they don't hurt their feet and have to slow down.

Another adaptation that allows animals to run at high speeds, especially adapted legs. Animals that have long, powerful legs are generally able to run faster tl1an other anin1als. Looking again at the cheetah, the cheetal1 has very muscular back legs. When a cheetah starts to run, it pushes off on one of its powerful back legs, sending the body forward in a matter of seconds. What's more, the cheetahs legs are very long, allowing them to take huge steps covering a greater distance in less time than if they had shorter legs.

Using points and examples from the lecture, explain two adaptations that allow animals to run at high speeds

索取“完整原文+题目+答案+解析+MP3音频”，请加新航道上海老师微信(shnc_2018)