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(43) / 评论(0) 分类 Facts-事实

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(50) / 评论(0) 分类 Scientific American(十)月

[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) 分类 北师大版高中英语模块9(选修)

AmeriCorps Grantee Serves Up New Approach to Childhood Obesity WHITE HOUSE The kindergarten students at John Burroughs Elementary School are staying an hour later on this day not to brush up on their reading or math skills, but to taste kale many for

发表于:2019-01-14 / 阅读(63) / 评论(0) 分类 VOA标准英语2015年(五月)

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(65) / 评论(0) 分类 趣味英语

By Stephanie Ho Washington 15 July 2007 U.S. National Security Advisor Stephen Hadley says Washington still has concerns about North Korea's nuclear program, despite Pyongyang's decision to shut down its main plutonium reprocessing facility. VOA's St

发表于:2019-02-01 / 阅读(88) / 评论(0) 分类 2007年VOA标准英语(七月)