保护性磁性氧化铁

事实：城墙的保护屏障-Ramparts Are Protective Barriers

Ramparts Are Protective BarriersWhen you sing or listen to the Star Spangled Banner, do you understand the words? The national anthem of the United States of America was inspired by the Battle of Baltimore at Fort McHenry in 1814. The lyrics suggest

发表于:2018-12-19 / 阅读(44) / 评论(0)

Facts-事实

SSS 2009-10-05

The 2009 Nobel Prize in physiology or medicine goes to Harvards Jack Szostak, Johns Hopkinss Carol Greider and Elizabeth Blackburn at U.C. San Francisco for their work on how chromosomes are protected by telomeres and the enzyme telomerase. The Nobel

发表于:2019-01-08 / 阅读(52) / 评论(0)

Scientific American(十)月

北师大版高中英语模块7--Unit 27(4)-2

[00:00.00]Qianlian is keen to go to university [00:03.32]but she definitely [00:04.27]doesn't want to study medicine [00:06.26]She used to simle all the time [00:07.83]but now she looks washed out and unhappy [00:10.51]She's also lost a lot of weight

发表于:2019-01-10 / 阅读(140) / 评论(0)

北师大版高中英语模块9(选修)

VOA标准英语2010年-Sierra Leone Hopes to Become Africa's

Sierra Leone hopes to become Africa's biggest exporter of iron ore with the opening of a new mine in the central Tonkolili district. Geologists say the new mine holds more then five billion tons of iron ore. Before mining can begin at Tonkolili, geol

发表于:2019-01-13 / 阅读(29) / 评论(0)

VOA标准英语2010年(二月)

英语听力：自然百科地球力场 Earth's Force Field—14

By analyzing different samples of lava, Herrero / Bervera has built up a picture of how the filed has changed since long before humans were around. They are actually the recorders of the Earth's magnetic field in hundreds of years, thousands of years

发表于:2019-01-22 / 阅读(48) / 评论(0)

自然百科2011年

英语绕口令集锦：T

T. Thank the other three brothers of their father's mother's brother's side. The blue bluebird blinks. The cat catchers can't catch caught cats. The crow flew over the river with a lump of raw liver.

发表于:2019-02-01 / 阅读(67) / 评论(0)

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achromatocyte

Antelope's Horn

asbestos center gauze