Sorry,there is not text temporarily, Please help tingroom to look for it! 如果您能找到更好的听力原文，请发贴到听力原文收集区，您将会获得10到30积分的奖励! Thank you！

发表于:2018-12-24 / 阅读(169) / 评论(0)

未知分类

科学美国人60秒 SSS 2014-10-21

Coyotes. In the last two decades theyve become common in almost every North American metropolitan area. Stanley Gehrt is a wildlife ecologist at Ohio State University who studies urban coyotes in Chicago. He spoke October 20th at the ScienceWriters20

发表于:2018-12-24 / 阅读(177) / 评论(0)

未知分类

科学美国人60秒 SSS 2014-10-22

These days, antibiotics are no silver bullet. In fact, if you get them in the hospital, you may end up with an additional infection. Like the bug Clostridium difficile, or C. diffwhich infects more than 300,000 Americans a year and kills some 14,000.

发表于:2018-12-24 / 阅读(170) / 评论(0)

未知分类

科学美国人60秒 SSS 2014-10-28

发表于:2018-12-24 / 阅读(151) / 评论(0)

未知分类

科学美国人60秒 SSS 2014-10-31

This is Scientific Americans 60-Second Science. I am Christopher itagliata. Got a minute? The human microbiome means community of tiny organisms that live on us and inside us. These creators play a vital role in our health. They calibrate our min-sys

发表于:2018-12-24 / 阅读(257) / 评论(0)

未知分类

科学美国人60秒 SSS 2014-09-19

66 million years ago, the check shoot the media right, a rock over 60 miles wild, snapped in to the earth. And you know what happened next, the dinos disappeared. But BB says to consider the big picture for a moment.You have to think not only about t

发表于:2018-12-24 / 阅读(153) / 评论(0)

未知分类

科学美国人60秒 SSS 2014-09-22

Sixty-six million years ago, the meteorite, a rock over six miles wide, slammed into the earth and you know what happened next, the dinos disappeared. but Benjemin Blunder, a planty ecologist at the University of Arizona, says , consider the picture

发表于:2018-12-24 / 阅读(170) / 评论(0)

未知分类

科学美国人60秒 SSS 2014-09-23

That is prescal child beating a drum in sequence an adult drummer. Here is the prescaler who cannot find the rhythm. Researchers find that the first child who can match the drum beats is more likely to have better early language skills and reading po

发表于:2018-12-24 / 阅读(174) / 评论(0)

未知分类

科学美国人60秒 SSS 2014-09-24

Some scientists say that the use of fire helps to make us the modern humans it dramatically changed what and how we eat or may have even altered our enemy. But the University of Utah anthropologist Polly Wisner thinks that the fire is also important

发表于:2018-12-24 / 阅读(166) / 评论(0)

未知分类

科学美国人60秒 SSS 2014-09-25

发表于:2018-12-24 / 阅读(159) / 评论(0)

未知分类

科学美国人60秒 SSS 2014-09-29

East, they all ready participate in producing some of the most popular pain killer substances around, bear and wine. Now scientists analyze the east can also make some of the most powerful energizes. morphine.They work in the general natural chemical

发表于:2018-12-24 / 阅读(181) / 评论(0)

未知分类

科学美国人60秒 SSS 2014-01-15

发表于:2018-12-24 / 阅读(154) / 评论(0)

未知分类

科学美国人60秒 SSS 2014-01-14

A steaming mug of coffee helps me wake up in the morning.But it can do more than just keep your eyes open. Caffine may actually boost your memory. Researchers gathered 160 uncaffinated adults, people who consumed less than 500 milograms of caffine in

发表于:2018-12-24 / 阅读(177) / 评论(0)

未知分类

科学美国人60秒 SSS 2014-01-13

发表于:2018-12-24 / 阅读(156) / 评论(0)

未知分类

科学美国人60秒 SSS 2014-01-10

发表于:2018-12-24 / 阅读(155) / 评论(0)

未知分类

科学美国人60秒 SSS 2014-01-08

Its important to trust your gut because the stomach and the food put into it can influence the entire body. For example a new study finds that mice that eat lots of fiber have stronger resistance against asthmatic attacks. For two weeks, let mice eat

发表于:2018-12-24 / 阅读(167) / 评论(0)

未知分类

科学美国人60秒 SSS 2014-01-07

发表于:2018-12-24 / 阅读(160) / 评论(0)

未知分类

科学美国人60秒 SSS 2014-01-06

The warm waste environment of your mouth makes it a great place for bacteria, some of which keep busy causing cavities. Such dental difficulties were thought to a really taken-off for we switch from hunting gathering to agriculture and had a ready su

发表于:2018-12-24 / 阅读(183) / 评论(0)

未知分类

科学美国人60秒 SSS 2014-09-26

Today's early warning systems for earthquakes give you at most a few minutes to prepare for the hit. That's because today's systems rely on detecting the first early rumbles of an actual earthquake before sending the alarm. Now researchers say that f

发表于:2018-12-24 / 阅读(149) / 评论(0)

未知分类

科学美国人60秒 SSS 2014-01-01

Haappy New Year. And dont feel bad about taking today off. After all, youve travelled far, and Im not talking about the trip home from the party. According to NASA, just by being on the planet Earth in the last year, youve zipped about 584 million mi

发表于:2018-12-24 / 阅读(207) / 评论(0)

未知分类

最新学习文章

热门学习文章

热门标签

英语听力 VOA标准英语 VOA 英语歌曲口语听力提高听力材料听力教程英语学习 NPR 英语口语 VOA慢速英语美国国家电台儿童英语 VOA英语小学英语 cnn VOA常速英语标准英语英文歌曲听电影学英语英语单词英文电影慢速英语 CRI 美联社新闻美国有线新闻加州分级澳洲新闻流行歌曲常速英语 ABC新闻快递疯狂英语英语读物听力棚车少年经济学人英语词汇商务英语 VOA双语新闻 BBC 中国电台大学英语 Treasures 加州语文 BBC英语英语听力网站 VOA英语教学词汇万花筒 SSS VOA英语听力 AP 新概念分级英语英语广播听力精选英语播客英文绘本 TED演讲赖世雄英语MP3 CCTV9英语新闻 lesson 英语新闻初中英语学英语英语语法历史上的今天英文广播剧英语游戏原版英语小说英语有声读物书虫英语牛津英语读物访谈录新闻一分钟考研英语英语每日在线听新闻 Us 新概念英语地道英语单词第二册自然百科高中英语 sports 实用英语 MP3听力辛沛沛 ESL英语第一册英语每日一句 unit 新东方 GRE 每日一词 BBC听力

学英语单词

arithmetical calculations