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Acid Rain 酸雨 Damage from acid rain is widespread - not just in eastern North America, but throughout Europe, Japan, China, and Southeast Asia. Is the rain that's falling on your umbrella acidic? A listener's question -- on today's Earth and Sky. J

发表于:2018-12-07 / 阅读(277) / 评论(0) 分类 (科普英语)Earth and Sky

[00:06.79]Jane works at the Center for Disease Control and prevention [00:12.12]as a disease detective. [00:15.46]Listen to the tape and answer the questions. [00:19.91]The Diseases detective. [00:23.46]Jane is one of the experts at the Center for Di

发表于:2018-12-13 / 阅读(265) / 评论(0) 分类 人教全日制普通高中英语(必修)高二

Sickle cell disease is a blood disorder due to a single genetic mutation. It remains in populations because the mutation has a flip sideit helps to protect against malaria. Now another mutation has been shown to afford similar protection. Deficiency

发表于:2018-12-24 / 阅读(136) / 评论(0) 分类 Scientific American(十二)月

How does acid deposition affect human health? We eat food, drink water, and breathe air that has come in contact with acid deposition. Canadian and U.S. studies indicate that there is a link between t

发表于:2019-01-02 / 阅读(322) / 评论(0) 分类 知性英语

Section 28 Acid Rain 50 years ago, no one talked about acid rain. Then we didn't really know the harm it was causing to the world. Today almost every adult and school child is aware of acid rain and i

发表于:2019-01-02 / 阅读(192) / 评论(0) 分类 英语导读1000句

By Lisa Schlein The UN Children's Fund, UNICEF, says Iodine Deficiency Disorders, which cause mental retardation, are a huge problem in Europe and Central Asia. UNICEF says this disorder can be solved

发表于:2019-01-03 / 阅读(141) / 评论(0) 分类 VOA2004(下)--健康科技

发表于:2019-01-03 / 阅读(141) / 评论(0) 分类 医务英语

VOICE ONE: This is Faith Lapidus. VOICE TWO: Cole Porter And this is Steve Ember with People in America in VOA Special English. Today we bring you the second part of our program about American songwriter Cole Porter. Porter wrote his songs from the

发表于:2019-01-11 / 阅读(205) / 评论(0) 分类 VOA慢速英语2008年(二)月

Can Folic Acid Prevent Childhood Autism? From VOA Learning English, this is the Health Report in Special English. A new study found that women who took folic acid supplements in early pregnancy were less likely to have a child with autism. Folic acid

发表于:2019-01-12 / 阅读(201) / 评论(0) 分类 2013年VOA慢速英语(五)月

AS IT IS 2016-02-13 Work Soothes Pain of Acid Attacks In India A caf in India is hiring women who once stayed in hiding after being attacked with acid. One woman, Dolly Kumari, says she stayed inside for two years after a man threw acid on her. He wa

发表于:2019-01-12 / 阅读(189) / 评论(0) 分类 2016年VOA慢速英语(二)月

Magnetic Ring Used to Stop Acid Reflux Heartburn is usually linked to gastric acid that reaches the esophagus when a weak muscle does not close as it should after swallowing. When stomach juices back up into the esophagus, the acid can cause a burnin

发表于:2019-01-14 / 阅读(189) / 评论(0) 分类 VOA标准英语2013年(四月)

By Birungi Machrine Kampala 26 November 2007 Attacks using acid are becoming more frequent in Uganda. Up to 2003, there were only 145 recorded attacks, but over the last three years, there have already been 87. Survivors often suffer from severe emot

发表于:2019-01-16 / 阅读(234) / 评论(0) 分类 VOA常速英语2007年(十一月)

By Kari Barber Dakar 06 July 2007 After years of turmoil and economic hardship, the small West African nation of Guinea Bissau is facing a health challenge caused by the absence of iodine in the nation's diet. In countries where iodine is not already

发表于:2019-01-16 / 阅读(184) / 评论(0) 分类 2007年VOA标准英语(七月)

Australian researchers have identified a new condition characterized by extreme laziness: motivational deficiency disorder (MoDeD). MoDeD is far different from being a couch potato when you get home from work or sleeping in late on a Sunday morning.

发表于:2019-01-26 / 阅读(168) / 评论(0) 分类 阅读空间

当你给自己设定了一个目标之后,你是踌躇满志还是心存怀疑?当你没有如愿实现自己的目标时,你是不是就此降低对自己的期望?这篇短文将告诉你:矢志不移地追求你的目标,不妄自菲薄

发表于:2019-01-28 / 阅读(124) / 评论(0) 分类 实用英语

23 患爱滋病的母亲不宜母乳喂养婴儿 DATE=3-19-01 TITLE=DEVELOPMENT REPORT - Breastfeeding and AIDS BYLINE=Jill Moss (Start at 1'00

发表于:2019-01-30 / 阅读(143) / 评论(0) 分类 科技之光

LOS ANGELES, March 3 (Xinhua) -- More and more American adults are suffering from a decline in overall sleep duration(持续时间), the U.S. Centers for Disease Control and Prevention (CDC) (疾病防治中心) said on Thursday. It's recommended tha

发表于:2019-02-01 / 阅读(142) / 评论(0) 分类 英语新闻

让你增加工作活力的5个方法 1. Engage in a quick conversation with a high-energy colleague. Their positive energy may refresh you. (Just be careful not to drag them down!) 与精力充沛的同事进行短暂的交谈。他们积极的干劲会

发表于:2019-02-05 / 阅读(136) / 评论(0) 分类 实用英语

【生词预览】 detect查明、测出,mental智力的,deficiency缺陷、不足,confess承认 【笑话原文】 Dont Know Much about History Would you mind telling me, Doctor, Bob asked, how you detect a mental deficiency in somebody who ap

发表于:2019-02-15 / 阅读(143) / 评论(0) 分类 英语笑话(MP3+文本)

[00:13.73]Mental deficiency [00:16.10]智力缺陷 [00:19.02]Would you mind telling me, Doctor, [00:22.09]Bob asked... [00:23.67]how you detect a mental deficiency in somebody [00:28.05]who appears completely normal? [00:31.34]Nothing is easier, he r

发表于:2019-02-22 / 阅读(135) / 评论(0) 分类 英语笑话(MP3+文本)
学英语单词
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