氮芥,甲氯乙胺盐酸盐,盐酸氮芥

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:2018-12-31 / 阅读(307) / 评论(0) 分类 高翔BECV中级培训

Yakima is a small city located an hour and a half's drive(1) from Wenatchee. It is a wide valley, famous for its grapes and apples. We were there last weekend for a baseball tournament, the first of the season(2). One interesting fact about Yakima is

发表于:2019-01-01 / 阅读(216) / 评论(0) 分类 英语博客 A cup of English

THIS IS AMERICA - White Sands National Monument: A Wonder of Nature, in New Mexico By Shelley Gollust Broadcast: Monday, September 19, 2005 (MUSIC) ANNOUNCER: Welcome to THIS IS AMERICA IN VOA Special

发表于:2019-01-02 / 阅读(240) / 评论(0) 分类 This is America

The US economy continues to recover from the tech bubble burst of 2000. But there're certainly many people still left behind. Long-term unemployment which is defined as being out of work for 27 weeks is at record levels. And within that group,the per

发表于:2019-01-08 / 阅读(370) / 评论(0) 分类 2005年NPR美国国家公共电台

At age 4, a Romanian girl was horrified when her right eye began to swell. Doctors in Andrea Nemethi's homeland told her family she had an inoperable tumor and gave her months to live. But the diagnosis turned out to be wrong. As she grew up, the tum

发表于:2019-01-13 / 阅读(155) / 评论(0) 分类 VOA标准英语2010年(七)月

An estimated 20 percent of the population has trouble working with numbers. That's as many as one person in five with some sort of numerical disability. The British researchers are exploring ways to stimulate the brain to improve the ability to under

发表于:2019-01-14 / 阅读(192) / 评论(0) 分类 VOA标准英语2010年(十一)月

BEIJING, Aug. 8 (Xinhua) -- China on Wednesday started to review anti-dumping measures it imposed on chloroprene rubber imported from a Japanese company, the Ministry of Commerce said. The move came after the ministry received complaints that Japan E

发表于:2019-02-05 / 阅读(265) / 评论(0) 分类 英语新闻

Cement is a major component of concrete, the world's most widely used man-made material, an integral part of roads, bridges and buildings. But making cement requires heating limestone and other materials to very high temperatures, a process that rele

发表于:2019-02-08 / 阅读(287) / 评论(0) 分类 VOA标准英语2010年(一月)