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英文书摘精选 1500年前,丝绸生产是中国的国家机密

Fifteen hundred years ago in China, silk production was a state secret. The silk trade was so valuable that anyone who tried to take silkworm eggs or mulberry seeds out of China was put to death. Then in 552 AD, two monks smuggled silkworm eggs to Co

发表于:2018-12-28 / 阅读(84) / 评论(0) 分类 初学者听力文摘精选

英语听力文摘 English Digest 535、蚕丝生产的秘密你知多少？

Secrets Of Silk Production Fifteen hundred years ago in China, silk production was a state secret. The silk trade was so valuable that anyone who tried to take silkworm eggs or mulberry seeds out of China was put to death. Then in 552 AD, two monks s

发表于:2018-12-31 / 阅读(39) / 评论(0) 分类 英语听力文摘 English Digest

VOA标准英语2011-- History Saves African-American Schoolho

HiddenHistorySavesAfrican-AmericanSchoolhouse When the tiny African-American community on Georgias St. Simons Island set out to save its one-room schoolhouse, it didn't realize the building was linked to an historic effort to combat racial discrimina

发表于:2019-01-13 / 阅读(61) / 评论(0) 分类 VOA标准英语2011年(九月)

美国国家公共电台 NPR Trump's Role As President May Be Boosting His Brand's Reputation

STEVE INSKEEP, HOST: President Trump's approval ratings are the lowest on record for a new chief executive. But there's some evidence that a different number is going up - the dollar value of the president's commercial brand. NPR's Jim Zarroli report

发表于:2019-01-16 / 阅读(39) / 评论(0) 分类 2017年NPR美国国家公共电台2月

英语听力：自然百科 大堡礁：自然奇迹—22

The snail appears to release chemicals that paralyse its victim. The goatfish seems powerless to escape as it's swallowed alive. Moments later, a venomous barb inside the snail puts the fish out of its misery. In a place where even seashells are dead

发表于:2019-01-22 / 阅读(46) / 评论(0) 分类 自然百科2014年

英语听力：自然百科 地球力场 Earth's Force Field—1

The solar system is a hostile place. Earth is under attack from deadly cosmic radiation. Life here is only possible, because it's protected by the magnetosphere, an invisible force field that cocoons the planet. But new evidence reveals that this vit

发表于:2019-01-22 / 阅读(64) / 评论(0) 分类 自然百科2011年

英语听力：自然百科 地球力场 Earth's Force Field—2

Radiation causes damage at the most fundamental level. It mutates the blueprint of life, DNA. Earth's magnetosphere is our crucial defense. It's so fundamental to our evolution and continued existence that the race is on to understand why it's changi

发表于:2019-01-22 / 阅读(58) / 评论(0) 分类 自然百科2011年

英语听力文摘 English Digest 23、1500年以前,丝绸的生产是中国的国家机密

1500年以前，丝绸的生产是中国的国家机密 Fifteen hundred years ago in China, silk production was a state secret. The silk trade was so valuable that anyone who tried to take silkworm eggs or mulberry seeds out of China was put to death

发表于:2019-01-26 / 阅读(70) / 评论(0) 分类 英语听力文摘 English Digest

美国国家公共电台 NPR Is Santa Real? A Doubting Brother And The Gift Of A Mother's Voice

MICHEL MARTIN, HOST: So let's say Santa and his helpers have settled on all the gifts - hopefully, good ones - and made it down the chimney or however he gets there. Most of us will have our cameras ready to capture the moment. But, not so long ago,

发表于:2019-02-21 / 阅读(70) / 评论(0) 分类 2018年NPR美国国家公共电台12月
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