2017年专业英语四级听力练习VOA常速[权威资料].docVIP

2017年专业英语四级听力练习VOA常速 本文档格式为WORD,感谢你的阅读。 必威体育精装版最全的 学术论文 期刊文献 年终总结 年终报告 工作总结 个人总结 述职报告 实习报告 单位总结 演讲稿 2017年专业英语四级听力练习VOA常速 　　勤奋学习就是面对学习作业，能一丝不苟的完成;面对学习中的困难，能积极找出困难的原因，勇于克服，不解决困难时不罢休。 以下是有哪些信誉好的足球投注网站整理的2017年专业英语四级听力练习VOA常速，希望能给大家带来帮助!更多精彩内容请及时关注我们! 　　Anti-Ebola Compounds Show Promise 　　While the West Africa Ebola epidemic is believed to be winding-down, the search for new treatments and vaccines is not. One study is a U.S./Serbian effort to find an effective anti-Ebola drug. 　　Last September, there were some dire warnings that West Africa Ebola cases could eventually number between 500,000 and one and a half million. Fortunately, that did not happen. But the biggest Ebola outbreak ever did infect about 27,000 people and killed more than 11,000. And after more than a year, it’s still not over. While Liberia has been declared Ebola-free, Sierra Leone and Guinea have not. 　　So health and government officials say better ways to prevent or contain another outbreak are very much needed. A number of vaccine trials continue and different drugs are being tested. 　　For example, the U.S. Defense Threat Reduction Agency and the Serbian Ministry of Science and Technical Development have provided funding to study a small class of molecules known as diazachrysenes.Initial research shows that most of the mice “that received one of three experimental compounds survived infection and did not show any side effects.” 　　One of the researchers is Bogdan Solaja, professor of organic chemistry at the University of Belgrade. He said, “There are several chemo types, several classes of compounds which are actually today known to be active against Ebola. But from being active against Ebola to being a drug is a long, long way.” 　　Every step in researching a new drug, he said, is elementary. 　　“Our compounds, more or less, behave good in mice. I mean they cure some mice up to 90 percent as it is presented in this publication.” 　　The findings appear in the journal ACS Infectious Diseases. 　　But even thou