艾斯英语听力材料
下面是小编为大家整理的一些艾斯英语听力材料原文,希望对大家有所帮助。
[00:00.00]This is What’s Trending Today...
[00:03.09]Three million years may seem like a long time.
[00:08.25]But when you consider that planet Earth is more than 4.5 billion years old, it is a pretty short period of time.
[00:19.43]And it is over that shorter time period that the whales in our oceans today got to be so large.
[00:30.08]The blue whale is the largest animal that has ever lived.
[00:34.80]They weigh more than even the biggest dinosaurs.
[00:40.35]They can grow to 30 meters long and weigh up to 130,000 kilograms.
[00:49.64]Blue whales are part of the baleen whale family.
[00:54.17]Baleen is a kind of food-filtering structure in the mouths of the whales.
[01:00.51]The whales developed this system about 30 million years ago.
[01:07.09]Other whales in the baleen family include fin whales, bowhead whales, and right whales.
[01:16.45]Today, these whales can weigh well over 70,000 kilograms.
[01:23.74]But for millions of years, they were not nearly that large, scientists say.
[01:31.07]“All of a sudden – ‘boom’ – we see them get very big, like blue whales,” scientist Nick Pyenson told the New York Times.
[01:42.26]He and other researchers recently published an article on whale size in the British research journal Proceedings of the Royal Society B.
[01:55.73]“It’s like going from whales the size of minivans to longer than two school buses,” Pyenson added.
[02:04.32]The researchers -- Pyenson, Jeremy Goldbogen and Graham Slater -- believe that a change in the Earth’s climate caused whales to get so large only about 3 million years ago.
[02:21.25]This change led to food becoming more easily available.
[02:26.46]An oncoming ice age made the ocean water cold.
[02:30.96]High winds mixed the water in the ocean faster than before.
[02:36.77]Rain and snow made more nutrients run off from the land into the water.
[02:44.14]The nutrients resulted in algae.
[02:47.68]That attracted small fish and shrimp called krill.
[02:53.52]The mixture of nutrients resulted in more food for large whales to eat.
[02:59.90]Whales that were able to quickly eat a lot of food survived. And they got larger.
[03:07.11]Whales that had teeth instead of baleen, however, did not survive.
[03:13.65]The largest baleen whales then produced other large whales.
[03:19.78]Over the next three or four million years, the baleen whales grew 10 times bigger than they had been, the researchers say.
[03:30.65]It is possible that the largest whales are gone, the researchers said.
[03:36.63]But, as they told the BBC, blue whales could grow even bigger -- or they could slowly die – depending on Earth’s changing climate.
[03:49.80]And that’s What’s Trending Today.
[03:52.30]I’m Dan Friedell.
-
英语听力文摘:有孩子的家庭更幸福吗
现在,有一种说法是有孩子的家庭更幸福,你怎么看?下面,小编就为大家送上一篇相关的英语听力文摘,希望对大家有用。DearAMomentofScience,亲爱的《科学一刻》栏目组,I’maparentoftwoyoungkids.It’schallenging,butoverallaveryrewardingexperience.YetIke...
-
大学英语听力技巧大纲
大学英语的听力真的难,明明我上礼拜还在听的听力,这周遇到了还是不会。为什么呢?别慌,小编下面为大家总结了一些技巧。其实,除去技巧部分,大多数同学的问题基本集中在三点:1.生词多;2.速度快;3.音变频繁。那么应该如何解决呢?1.生词多。背单词是大家最头痛的部分。有...
-
如何有效练习英语听力
引言:听力是英语实用中最基本的能力,听不懂自然说不出。对于想要提高听力水平的学习者来说,掌握正确的练习方法是最重要的。接下来小编分享一篇文章,教大家如何进行有效的听力训练。听力是学习任何一门语言的开始,如果大家还在为学不好听力而烦恼的话,我建议大家用力...
-
2016年中考安徽卷英语听力材料
现在初中的期末考试已经在来的路上,学生们都在认真备考,但是,对于英语考试,还要再慎重一点哦。下面是小编为大家整理的2016年中考安徽卷英语听力材料,希望对大家有所帮助。长对话一WearegoingtoShanghaiDisneylandthisdyouliketojoinus?这周六我们将去上海迪士尼乐...