网站导航     在线客服  
2018托福真题解析汇总
学生选择在小站备考:30天 383700名,今日申请6222人    备考咨询 >>

TPO3托福听力Lecture1文本+题目+答案解析

2018年01月10日16:36 来源:小站整理
参与(0) 阅读(2246)

托福备考资料免费领取

免费领取
摘要:TPO托福模考软件是目前市面上最好用的托福备考资料了,托福考生一般都会拿TPO来进行托福考试的练习。这里小编将为大家整理了完整理了TPO3托福听力Lecture1文本+题目+答案解析,帮助大家更好的进行托福听力备考

现在大家在进行托福备考时TPO托福模考软件相信是大家用的最多的工具了,对于托福成绩的提升是非常有帮助的。托福听力可以说是整个托福考试当中比较重要的一个部分,如何利用现有资料TPO模考软件来提升大家的托福成绩呢?今天小编在这里整理了TPO3托福听力Lecture1文本+题目+答案解析来分享给大家,希望对大家托福听力备考有帮助。

TPO3托福听力Lecture1文本+题目+答案解析图1

TPO3托福模考软件配套资料汇总→→点击进入

TPO3托福听力Lecture1原文文本

Humming Birds

Professor: Now, we’ve been talking about the loss of animal habitat from housing developments, uh …, growing cities – small habitat losses. But today I wanna begin talking about what happens when habitat is reduced across a large area. There are, of course, animal species that require large areas of habitat, and some migrate over very long distances. So what’s the impact of habitat loss on those animals – animals that need large areas of habitat?

Well, I’ll use the humming birds as an example. Now you know a humming bird is amazingly small, but even though it’s really tiny, it migrates over very long distances, travels up and down the western hemisphere – the Americas, back and forth between where it breeds in the summer and the warmer climates where it spends the winter. So you would say that this whole area over which it migrates is its habitat because on this long distance journey, it needs to come down to feed and sleep every so often, right?

Well, the humming bird beats its wings – get this – about 3 thousand times per minute. So you think, wow, it must need a lot of energy, a lot of food, right? Well, it does. It drinks a lot of nectar from flowers and feeds on some insects, but it’s energy efficient too. You can’t say it isn’t. I mean, as it flies all the way across the Gulf of Mexico, it uses up none of its body fat.

But that doesn’t mean it doesn’t need to eat. So humming birds have to rely on plants in their natural habitat. And it goes without saying, but the opposite is true as well, plants depend on humming birds too. There are some flowers that can only be pollinated by the humming birds. Without it stopping to feed and spread pollen from flower to flower, these plants would cease to exist.

But the problem, well, as natural habitat along these migration routes is developed by humans for housing or agriculture or cleared for raising cattle, for instance, there is less food available for migrating humming birds. Their nesting sites are affected too, the same by the same sorts of human activities. And all of these activities pose a real threat to the humming bird population. So to help them survive, we need to preserve their habitats.

And one of the concrete ways people have been doing this is by cleaning up polluted habitat areas and then replanting flowers, um, replanting native flowers that humming birds feed on. Promoting ecological tourism is another way to help save their habitat. As the number of visitors, eco-tourists who come to humming bird habitats to watch the birds, the more the number of visitors grows, the more local businesses’ profit, so ecological tourism can bring financial rewards, all the more reason to value these beautiful little creatures in their habitat, right?

But to understand more about how to protect and support the humming birds the best we can, we’ve got to learn more about their breeding, nesting sites and migration routes, and also about the natural habitats we find there. That should help us determine how to prevent further decline in the population. A good research method, a good way to learn more, is by running a banding study.

Banding the birds allows us to track them over their lifetime. It’s been a practice that’s been used by researchers for years. In fact, most of what we known about humming birds comes from banding studies, where we capture a humming bird and make sure all the information about it, like its weight and age and length, are all recorded and put into an international information database.

And then we place an extremely lightweight band on one of its legs, well, what looks like a leg, although technically it’s considered part of the bird’s foot. Anyway, these bands are perfectly safe, and some humming birds have worn them for years with no evidence of any problems. The band is labeled with a tracking number, oh, and there is a phone number on the band for people to call for free, to report a banded bird they’ve found or recaptured.

So when a banded bird is recaptured and reported, we learn about its migration route, its growth, and how long it has been alive, its lifespan. One recaptured bird had been almost 12 years earlier – she was one of the oldest humming birds on record. Another interesting thing we’ve learned is that some humming birds, um, they no longer use a certain route. They travel by a different route to reach their destination. And findings like these have been of interest to biologists and environmental scientists in a number of countries who are trying to understand the complexities of how changes in a habitat affect the species in it.

查看TPO3托福听力Lecture1的题目请进入下一页→→→

更多最新,最in的托福资讯,关注公众号:小站托福(ID:xiaozhantuofu2015)
特别申明:本文内容来源网络,版权归原作者所有,如有侵权请立即与我们联系contactus#zhan.com,我们将及时处理。

相关文章

【小站原创】TPO40-51题目及答案解析全收录(完整版) 【小站原创】TPO40托福听力Conversation题目... 【小站原创】TPO41托福听力Lecture题目文本及答案... 【小站原创】TPO40托福听力Lecture题目文本及答案... 【小站原创】TPO42托福听力Lecture题目文本及答案... 【小站原创】TPO48托福听力Lecture题目文本及答案... 【小站原创】TPO45托福听力Lecture题目文本及答案... 【小站原创】TPO44托福听力Lecture题目文本及答案...

专题推荐

未输入验证码
未输入验证码
未输入验证码
获取验证码
免费领取
小站教育托福官方群

群号:857201332

「扫二维码 加入群聊」
加入
托福关键词