托福听力课外资料练习:科学美国人60秒疟原虫免疫相关内容分享
- 2017年07月28日13:26 来源:小站整理
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在托福听力考试的备考过程中,科学美国人60秒相信大家一定用得比较多,那么大家平时是如何利用这个课外资料的呢?这里小编整理了科学美国人60秒疟原虫免疫的内容分享,大家一起来学习一下吧。
科学美国人60秒听力练习:疟原虫免疫
科学美国人60秒英文文本
A new development in malaria:
“Plasmodium vivax, the world’s most common malara parasite, now infects people previously considered to be resistant.”Peter Zimmerman from Case Western Reserve University school of medicine spoke at the AAAS meeting in Washington on February 19th.
“So, red blood cells of most African people do not express the Duffy blood-group protein. Now, the Duffy blood-group protein is essentially necessary for Plasmodium vivax to get into the red cell. Duffy-negative Africans have been considered to be resistant to Plasmodium vivax.”
Zimmerman studied Malagasy populations on Madagascar. He found that 10 percent of Duffy-negative subjects were in fact infected with Plasmodium vivax.
“So we’ve shown that Plasmodium vivax has cleared Duffy negativity. If Plasmodium vivax is evolving to learn how to infect the Duffy-negative red cell, then a large continent of people suddenly becomes susceptible to a new form of malaria.”
—Steve Mirsky
科学美国人60秒词汇翻译:
1. malaria n.疟疾
2. vivax n. 疟原虫(指引起疟疾的单细胞动物)
3. parasite n.寄生生物;寄生虫
4. negativity n. 否定性, 消极性
5. susceptible a.易受影响的;过敏的;能经受的
以上就是小编为大家整理的科学美国人60秒:疟原虫免疫的文本以及翻译,大家练习的时候还可以找来音频资料一起练习,效果定会更好。最后,小编预祝大家托福考试能取得理想的成绩。
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