国产av不卡一区二区_欧美xxxx做受欧美_成年人看的毛片_亚洲第一天堂在线观看_亚洲午夜精品久久久中文影院av_8x8ⅹ国产精品一区二区二区_久久精品国产sm调教网站演员_亚洲av综合色区无码一二三区_成人免费激情视频_国产九九九视频

您現(xiàn)在的位置: Language Tips> Easy English> Today in History  
 





 
July 11
[ 2006-07-11 08:00 ]
MP Evan Harris is one of 18 volunteers for HIV vaccine trials
2000: Britain pioneers HIV vaccine

England have

The World Aids Conference in South Africa has announced trials for a new HIV vaccine will begin in Britain.

Liberal Democrat MP Evan Harris will be one of 18 healthy volunteers who will take part in the first toxicity tests.

The MP for Oxford West, Dr Harris, 35, said: "I hope to be a small part of a process that will deliver something that will save Africa from further devastation."

The vaccine has been developed by researchers at Oxford and Nairobi Universities who studied prostitutes in Kenya and found a group who resisted the disease in spite of daily exposure to it.

If the tests in Oxford are successful, trials will go to Nairobi in October under the supervision of Professor Job Bwayo and his team.

Professor ofimmunologyat Oxford University Andrew McMichael said: "Our chances of developing a vaccine are better than 50-50. But the earliest we could expect a vaccine to be ready would be in seven to 10 years."

There are currently 34 million people in the world suffering from HIV and 70% of them are in Africa.

This is the first time a vaccine has been based on the HIV strain in Africa. It uses DNA and a wild animal virus similar to that used to combat smallpox.

The Oxford-Nairobi project is one of 11 similar groups around the world funded by the International Aids Vaccine Initiative (Iavi). It has received ?4m from the British Government.

Iavi estimates that three times more than the ?00m currently spent on research programmes is needed to find a vaccine within ten years.

Vaccination should provide a much cheaper and more effective means of tackling the pandemic, especially for the Third World which cannot afford HIV drugs and is barred from developing generic variations.

According to Iavi only 2% of the $20m spent annually on Aids around the world is for vaccine development.

Skylab I was launched on 14 May 1973

1979: Skylab tumbles back to Earth

Artificially 1969:
The The US space laboratory, Skylab I, plunged to Earth this evening scattering debris across the southern Indian Ocean and sparsely populated Western Australia.

All week there has been mounting speculation over where the spacecraft would come down. It has been in orbit six years - for the past five of those it has been unoccupied.


Skylab's last signal was recorded at 1611 GMT. Less than an hour later a tracking station at Ascension Island in the South Atlantic confirmed the solar panels were beginning to peel off as the craft descended.

The 77.5 ton Skylab could break into as many as 500 pieces, including a 5,100lb (2,310kg) airlock shroud and a 3,900lb (1,767kg) lead safe to protect film from radiation, which are expected to survive the heat of re-entry into the earth's atmosphere.

Head of the Nasa task force monitoring Skylab, Richard Smith, said they had already received reports of hot debris, which had lit up the night sky, from several points in Western Australia.

'Edge of Cornwall'

Dozens of residents reported seeing debris falling near Kalgoolie, 370 miles (595km) northeast of Perth.

Skylab was launched on 14 May 1973 and was lived in by three teams of astronauts for periods of up to 84 days as they tested human endurance over long periods of weightlessness.

While the astronauts were on board they were able to carry out many valuable scientific experiments including analysis of the sun's activity and how it affected the Earth.

Skylab was abandoned by the last crew in February 1974, since when scientists have only had limited control over it. It was supposed to stay in orbit until the mid-1980s when the new shuttle would have come to its rescue.

A Skylab task force of computer specialists, engineers, lawyers and public relations experts has been on standby at various Nasa centres.

It has been very difficult to predict exactly where and when the craft would finally come down. Only two days ago, a Nasa spokesman had been predicting it would land near the "edge of Cornwall".

In India, the police in all 22 states were put on full alert and the civil aviation department was planning to ban flights across the sub-continent during the crucial hours of re-entry.

Skylab's final orbital path, its 34,981st, passed over the north Pacific, the northwest tip of the United States, south central Canada, north of Montreal and Ottawa and the state of Maine.

Vocabulary:
 

immunology :免疫學








 
 
相關(guān)文章 Related Stories
 
         
 
 
 
 
 
         
 
 

48小時內(nèi)最熱門

     
  《一曲銷魂》:Killing me softly with his song
  “異性戀”說法多
  小心寬邊太陽鏡!
  Vehicles ordered off road for drill
  英國七成多司機不會看地圖

本頻道最新推薦

     
  為什么畢業(yè)時要穿學位服
  We cats can use chopsticks, too!
  不受歡迎的夜半歌聲:打鼾
  US Independence Day(美國國慶日)
  Exercise after dinner

論壇熱貼

     
  The World Without Us(e-c)practice
  How to help a friend in need(e-c)practice
  'I Hate My Job -- Now What?!'(e-c)practice
  “相親”英語怎么說?
  錢鐘書《圍城》英文標題哪個好?
  how to say 老火靚湯?






欧美色xxx| 欧美一区网站| 综合视频一区| 欧美美女福利视频| 少妇视频一区| 日韩欧美一起| 日韩精品成人av| 亚洲欧洲成人| 九九大香尹人视频免费| 亚洲最新永久在线观看| 久久久人成影片一区二区三区| 亚洲国产精久久久久久久| 欧美日韩国产成人在线免费| 好吊成人免视频| 一区2区3区在线看| 国产精品久久久久久久久免费樱桃| 99r精品视频| 国产高清不卡一区| 男人的天堂成人在线| 亚洲黄页一区| 激情久久久久| 91精品电影| 久久久久久影院| 偷拍亚洲精品| 亚洲理论电影| 网曝91综合精品门事件在线| 国产美女撒尿一区二区| 日韩成人18| 久久影院一区二区三区| vam成人资源在线观看| 91九色综合| 国模精品视频| 免费网站在线观看人| 性xxxfreexxxx性欧美| 菠萝菠萝蜜在线观看| 国产原创视频在线观看| 色大18成网站www在线观看| 中午字幕在线观看| 中文产幕区在线观看| 在线国产网址| 欧美hdfree性xxxx| 一二三四在线视频观看社区| 久久白虎精品| 你懂的在线播放| 黄色片在线播放| 欧美成人明星100排名| 一色桃子在线| 免费a级毛片在线观看| 久久久久国产精品嫩草影院| 精品无吗乱吗av国产爱色| 日韩av视屏| youjizz在线播放| jizz日韩| 青青在线视频| a篇片在线观看网站| 国精一区二区三区| 色戒汤唯在线| 秋霞国产精品| japansex久久高清精品| 成人搞黄视频| 好吊妞国产欧美日韩免费观看网站| 国产精品一区二区三区美女| 国内精品久久久久久久影视简单| 香蕉久久夜色精品国产更新时间| 国产99亚洲| 国产精品99视频| 国产精品大片免费观看| 亚洲欧美一区在线| 亚洲一区免费| 久久99国产精品尤物| 大尺度一区二区| 欧美激情在线看| 亚洲欧美色综合| 欧美日韩国产麻豆| 在线播放国产精品二区一二区四区 | 国产美女久久久久| 久久一日本道色综合| 国产精品久久久久久妇女6080| 亚洲第一成年网| 日韩一区二区三区四区| 中文字幕免费国产精品| 欧美一区第一页| 色xxx在线播放| 午夜刺激在线| 成人av福利| 91成人抖音| 国产探花在线精品一区二区| 亚洲精品看片| 丰满少妇久久久久久久| 亚洲欧洲日产国码二区| 欧美三区在线视频| 永久免费毛片在线播放不卡 | 97视频在线看| 色的视频在线观看免费播放| 中文字幕在线视频免费观看| 女囚岛在线观看| 精品国产亚洲一区二区三区| 91综合久久| 麻豆91精品视频| 国产人成一区二区三区影院| 欧美性极品xxxx娇小| 亚洲精品视频网上网址在线观看| 午夜欧美大片免费观看| 免费一看一级毛片| 久久av少妇| 中文字幕不卡三区视频| 亚洲动漫在线观看| 另类av一区二区| 91毛片在线观看| 日韩欧美在线观看| 亚洲欧美在线一区| 亚洲欧美日韩综合精品网| 久草在线资源网站| 超碰在线免费播放| 亚洲五码在线| 国产婷婷精品| 久久午夜羞羞影院免费观看| 色综合中文综合网| 国产亚洲欧美日韩精品| 免费国产阿v视频在线观看| 福利在线国产| 涩涩视频在线| 成人中文在线| 久久se精品一区精品二区| 亚洲视频香蕉人妖| 欧美xxxx老人做受| 亚洲在线偷拍自拍| 全部孕妇毛片丰满孕妇孕| 国产探花在线观看| 亚洲专区视频| 久热成人在线视频| 一区二区三区成人| 日韩成人中文电影| 性18欧美另类| 在线视频你懂| 日韩另类视频| 欧美成人一区二免费视频软件| 懂色av一区二区三区蜜臀| 精品福利免费观看| 中文字幕久久精品| 一色屋免费视频| a天堂中文在线88| 一区二区三区国产好| 老鸭窝91久久精品色噜噜导演| 国产精品国产精品国产专区不蜜| 日韩午夜中文字幕| 中文字幕+乱码+中文字幕| 日日噜噜噜夜夜爽爽狠狠视频| 欧美aaaaa性bbbbb小妇| 日韩在线综合| 成人午夜精品一区二区三区| 日本乱码高清不卡字幕| 久久手机免费视频| 天天色天天射天天干| 激情在线视频播放| 清纯唯美亚洲综合一区| 国产99久久久精品| 色综合久久99| 欧美国产精品va在线观看| 成人综合网址| 亚洲精品mv| 欧美日韩三区| 中文子幕无线码一区tr| 亚洲国产91精品在线观看| 国产在线观看色| 成年人视频网站在线| 成人香蕉社区| 国产在线精品一区二区不卡了| 色欧美88888久久久久久影院| 九九热在线精品视频| 国产国产国产国产国产国产| 亚洲妇女成熟| 国户精品久久久久久久久久久不卡| 久久久国际精品| 精品国产一区二区在线观看| 欧美色图亚洲| 欧洲美女少妇精品| 深爱激情综合| 91原创在线视频| 精品国产伦一区二区三区免费| 欧美妇乱xxxxx视频| 在线观看av的网站| 国产一区日韩| 久久免费电影网| 亚洲电影在线观看| 色猫咪免费人成网站在线观看| 美女航空一级毛片在线播放| 99久久精品网站| 中文字幕成人av| 国产午夜精品视频| www.天天操| 狠狠久久综合| 麻豆成人91精品二区三区| 91精品福利视频| 欧美一级黑人aaaaaaa做受| 青青操在线视频| 亚洲图片久久| 久久久美女毛片| 亚洲欧美国产制服动漫| 免费在线观看的av| 成人精品国产亚洲| 久久精品国产**网站演员| 欧美视频在线一区二区三区| 欧美最猛黑人xxxx黑人猛交3p | 热久久免费视频| 91精品福利视频| 热99精品视频| av在线理伦电影| av成人激情| 日本黄色一区二区| 在线亚洲精品自拍| 一区二区三区伦理| 亚洲国产一区二区精品专区| 亚洲电影一级黄| 国产91精品青草社区| 毛片网站在线免费观看| 久久久久久久久国产一区| 亚洲美女区一区| 欧美国产激情18| 成人18在线| 一区二区电影| 午夜欧美一区二区三区在线播放| 97久久久久久| 黄色免费在线观看| 黑人一区二区| 黑人精品xxx一区一二区| 亚洲午夜久久久久中文字幕| 欧美videosex性欧美黑吊| 一本久道综合久久精品| 在线观看国产91| 国产小视频在线高清播放| 碰碰在线视频| 日av在线不卡| 欧美成人女星排行榜| 三级短视频在线| 成人三级毛片| 国产亚洲视频系列| 欧美成人亚洲成人日韩成人| 国产一区电影| 自拍日韩欧美| 欧美小视频在线观看| 国产又粗又大又长| 日韩高清在线| 国产成人免费视频| 国产午夜精品全部视频在线播放| 天海翼一区二区三区四区在线观看| 猛男gaygay欧美视频| 亚洲色图视频免费播放| 7777kkkk成人观看| 国产嫩草在线视频| 麻豆国产精品官网| 亚洲精品久久在线| 在线免费观看色| 久久五月天小说| 偷窥少妇高潮呻吟av久久免费| 欧美xxxx三人交性视频| 成人午夜精品| 波多野结衣中文一区| 色噜噜狠狠狠综合曰曰曰88av | 男人影院在线观看| 午夜影院日韩| 精品久久久久久久久久久院品网| 国产一级粉嫩xxxx| 成人a'v在线播放| 五月婷婷激情综合网| 精品卡一卡卡2卡3网站| 久久天天久久| 久久免费美女视频| 久久久久久av| av3级在线| 国产一区在线看| 永久免费毛片在线播放不卡| 成人三级黄色免费网站| 日韩视频在线一区二区三区 | 麻豆av电影在线观看| 国内精品久久久久久久影视蜜臀 | 国产日本精品| 欧美精品一区男女天堂| 日韩黄色网址| 欧美日韩网址| 91精品国产色综合久久不卡蜜臀| 国产99re| 忘忧草精品久久久久久久高清| 欧洲av一区二区嗯嗯嗯啊| 免费人成网ww777kkk手机| 亚洲男人都懂第一日本| 亚洲 欧美综合在线网络| 少妇高潮爽到全身痉挛抽搐| 国内精品麻豆美女在线播放视频| 伊人一区二区三区| 国产美女视频网站| 成人激情自拍| 亚洲国产精品自拍| 日本高清色图| 日韩超碰人人爽人人做人人添| 亚洲一区二区在线播放相泽| free极度另类性欧美| 国语一区二区三区| 午夜激情久久久| 9l视频自拍蝌蚪9l视频| 日本不卡高清| 欧美精品三级在线观看| 在线手机福利影院| 黄色亚洲免费| 亚洲电影天堂av| 91精彩视频在线观看| 麻豆极品一区二区三区| 俺去啦;欧美日韩| 国产v日韩v欧美v| 久久综合色之久久综合| 5g影院5g天天爽永久免费影院| 国产成人久久精品一区二区三区| 亚洲日本欧美天堂| 小舞被吸乳羞羞网站视频| 嫩草影视亚洲| 在线观看一区不卡| 成年人在线播放| 午夜在线视频一区二区区别| 亚洲四色影视在线观看| 91蜜桃在线视频| 成人激情视频网站| 中文天堂网在线www| 亚洲一级大片| 欧美性猛交xxxx黑人| 日本女优北野望在线电影| 亚洲精一区二区三区| 亚洲日韩中文字幕在线播放| 色呦呦在线资源| 91色九色蝌蚪| 韩国福利一区| 久久91麻豆精品一区| 欧美日韩亚洲综合| 日本护士...精品国| 麻豆freexxxx性91精品| 欧美精品久久久久久久久| 亚洲国产一区二区视频| 涩涩网站在线观看| 日韩伦理视频| 精品国产污网站| 麻豆91在线| 99精品热视频| 日韩簧片在线观看| 国产美女撒尿一区二区| 欧美私模裸体表演在线观看| 夜鲁很鲁在线视频| 日本欧美在线观看| 欧美激情精品久久久| 国产激情精品一区二区三区| 精品久久久久久中文字幕| 在线影院自拍| 久久激情综合网| 久久久综合av| 中文一区二区三区四区| 91精品1区2区| 青春有你2免费观看完整版在线播放高清| 免费成人在线观看| 91高清视频免费观看| 97超碰成人| 欧美日韩国产乱码电影| 777电影在线观看| 99re热视频精品| 天堂网在线.www天堂在线 | 欧美日韩国产一区中文午夜| 成r视频免费观看在线播放| 麻豆精品在线播放| 26uuu久久噜噜噜噜| 成人香蕉社区| 欧美一区二区久久久| dy888亚洲精品一区二区三区| 久久久综合网站| xfplay先锋影音夜色资源站| 亚洲国产99| 欧美成人午夜激情| 1204国产成人精品视频| 欧美精品第一页| av在线下载| 亚洲欧美在线另类| 啊啊啊啊啊啊啊视频在线播放| 久久夜色精品| 亚洲色图另类图片| 精品久久国产| 亚洲欧美日韩区| 免费污视频在线一区| 欧美视频国产精品| 丁香婷婷在线| 国产欧美日韩精品a在线观看| 先锋影音av网站| 日韩成人免费电影| sese久久| 66久久国产| 久久久国产视频91| 成人av综合网| 亚洲第一区第二区| 亚洲精品国产精品国产| 欧美性色视频在线| 欧美69xxx| 亚洲桃色在线一区| 在线看你懂得| 91免费国产视频网站| 天天干天天爽|