标签：immunity 相关文章

全新版大学英语听说教程第四册 unit13

Unit 13 Part B Reality TV Around the Globe Reality TV shows have taken the world by storm. 'Survivor', 'Big Brother' and other shows have drawn hundreds of millions of viewers to the screen. It was in Europe that all this started. The first series of

发表于:2018-12-04 / 阅读(113) / 评论(0) 分类 全新版大学英语听说教程第四册

英文书摘精选 昆虫是如何对抗细菌和寄生虫的?

Imagine that youre an insect, and that youve fallen ill because some bacteria or parasites have invaded your body. If you want to make it to a ripe old bug age, your body will need to fight off these invaders. 想象一下，假如你是一只小昆虫

发表于:2018-12-28 / 阅读(112) / 评论(0) 分类 初学者听力文摘精选

60秒科学:懒得锻炼吗? 那就大笑吧

[Clip of Rodney Dangerfield, saying Its not easy being me; when I was born the doctor told my mother, I did all I could, but he pulled through anyway.] Rodney mighta felt badbut he should make you feel good. Because a new study shows that laughter ca

发表于:2019-01-02 / 阅读(116) / 评论(0) 分类 60秒科学

万花筒 2011-11-12&11-14 流感知多少？

After getting your flu shot, did you know it takes about two weeks to develop an immunity? Its true. You can test your knowledge on more flu facts by taking this quiz. Here it goes. True or false: The flu isnt serious. Thats false. You can have compl

发表于:2019-01-07 / 阅读(60) / 评论(0) 分类 万花筒2011年

万花筒 2013-04-08&04-10 中国暴发H7N9疫情

Rising fear over an outbreak, a new and dangerous strain of the bird flu so far contained to China. But tonight right here in the US, top scientists are now raising a development of vaccine. And if theyre concerned, how concerned should the rest of u

发表于:2019-01-07 / 阅读(76) / 评论(0) 分类 万花筒2013年

NPR 2009-10-09

The Senate Judiciary Committee has passed a revised version of the USA Patriot Act. Three provisions will sunset at the end of the year if the law is not renewed. NPRs Ari Shapiro reports. The committee voted eleven to eight in favor of the revision

发表于:2019-01-08 / 阅读(492) / 评论(0) 分类 2009年NPR美国国家公共电台10月

VOA标准英语2012--New Dysentery Threat Emerges

New Dysentery Threat Emerges Its known that clean water and sanitation can bring a sharp decline in dysentery cases in developing countries. But its not enough to stop the spread of the disease in countries undergoing rapid development and industrial

发表于:2019-01-08 / 阅读(72) / 评论(0) 分类 VOA标准英语2012年(八月)

学个词Learn a Word 第1193期 Strip

今天我们要学的词是strip。 Strip, 做为动词，有剥夺的意思。上星期五， The Wisconsin assembly voted to strip bargaining rights from most public employees, 威斯康辛州众议院投票决定，剥夺大多数政府雇员的谈判

发表于:2019-01-08 / 阅读(79) / 评论(0) 分类 英语单词荟萃

VOA标准英语2012--Untreatable New Forms of TB Raising Alarm

Untreatable New Forms of TB Raising Alarm The World Health Organization (WHO) lists 69 countries that have reported what is officially called extensively drug-resistant tuberculosis (XDR-TB). It's a form of the mycobacterium that, like the one report

发表于:2019-01-13 / 阅读(48) / 评论(0) 分类 VOA标准英语2012年(一月)

VOA标准英语2009年-Talk of Swine Flu Parties Goes Viral

Doctors warn intentional infection not a good idea Alex Villarreal | Washington, DC 17 December 2009 CDC says the best step to protection is vaccination Many Americans are doing all they can to avoid the H1N1 virus. But talk in the news and on the In

发表于:2019-01-13 / 阅读(98) / 评论(0) 分类 VOA标准英语2009年(十二月)

VOA标准英语2012--Some Illegal Immigrants Allowed to Stay Under Obama Order

Some Illegal Immigrants Allowed to Stay Under Obama Order Monica Sibri and Yohan Garcia are friends. Garcia came to the United States when he was 15, Sibri when she was 16. He is eligible to remain in the country for now; she is not. President Obama

发表于:2019-01-14 / 阅读(63) / 评论(0) 分类 VOA标准英语2012年(十月)

VOA标准英语2011--Study: Vitamin D is Powerful Weapon Agai

Study: Vitamin D is Powerful Weapon Against TB Vitamin D plays a critical role in fighting infection and now scientists say that it may be a powerful weapon against tuberculosis. In a study reported in the journal Science Translational Medicine, rese

发表于:2019-01-14 / 阅读(60) / 评论(0) 分类 VOA标准英语2011年(十月)

VOA标准英语2010年-WHO Says New Vaccine Could Eradicate P

A new polio vaccine gives hopes that the disease can be completely eradicated. Polio can cause severe deformities and paralysis in children. The number of polio cases worldwide has dropped by over 99 percent in recent years because of a global vaccin

发表于:2019-01-14 / 阅读(58) / 评论(0) 分类 VOA标准英语2010年(十一)月

VOA标准英语2010年-Analysts: Kurds Could Determine Result

This Sunday, Turkish voters will go the polls to decide on a package of constitutional reforms. The prime minister says the vote is an opportunity to democratize the country. But the country's main opposition says the reforms are a government power g

发表于:2019-01-14 / 阅读(62) / 评论(0) 分类 VOA标准英语2010年(九)月

VOA标准英语2014--非洲的病毒性疾病传播

African Viral Disease Spreads 非洲的病毒性疾病传播 Its not an illness you hear much about, but it can make a person feel miserable for years. And its sometimes fatal. Its spreading and scientists describe the mosquito-borne disease as a maj

发表于:2019-01-14 / 阅读(71) / 评论(0) 分类 VOA标准英语2014年(六月)

Hourly News updated 10:00 2011/10/10

Church clashes kill 23 in Cairo At least 23 people have been killed and scores injured in the worst violence since Egypt's former President Hosni Mubarak was ousted in February. Clashes broke out after a protest in Cairo against an attack on a church

发表于:2019-01-19 / 阅读(213) / 评论(0) 分类 Hourly News 每小时新闻

Hourly News updated 14:00 2011/10/10

Thai authorities confirm 13 Chinese killed after drug ring hijacked ships Authorities in Thailand have confirmed that 13 Chinese sailors were killed after a local drug ring attacked and hijacked two Chinese cargo ships on the Mekong River last week.

发表于:2019-01-19 / 阅读(53) / 评论(0) 分类 Hourly News 每小时新闻

美联社一分钟新闻 2008-07-11

1. President Bush has signed a bill overhauling rules on government eavesdropping. The new law also grants immunity to companies that helped the government spy on Americans. The ceremony ended a year-long debate over privacy and civil liberties conc

发表于:2019-02-08 / 阅读(131) / 评论(0) 分类 美联社新闻一分钟2008年(七)月

【英语时差8,16】疫苗如何运作-下

The second type of vaccine contains an attenuated virus. This virus is alive, but has been grown in the lab for several generations, so it isnt able to multiply very well in humans. With the attenuated virus multiplying very slowly, your body is able

发表于:2019-02-15 / 阅读(71) / 评论(0) 分类 英语时差8，16

英语听力精选进阶版 8078

Top level talks between the United States and Russiato try to ease the crisis over Ukraine have ended instalemate. After hours of discussions in London, theRussian foreign minister, Sergei Lavrov, said therehad been no common vision with his US count

发表于:2019-03-04 / 阅读(83) / 评论(0) 分类 英语听力精选进阶版
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