[微] 酵母污染菌

SSS 2009-04-14

This is Scientific American's 60-Second Science. I'm Christie Nicholson . Got a minute? Altruism poses a problem for the theory of survival of the fittest. If we help others at a cost to ourselves, nice-guy behavior should die out, because we are giv

发表于:2019-01-08 / 阅读(60) / 评论(0)

Scientific American(四)月

美国国家公共电台 NPR Scientists Closer To Creating A Fully Synthetic Yeast Genome

AUDIE CORNISH, HOST: Scientists have taken a big step towards making synthetic life. In other words, they figured out how to create a living thing with DNA that was written in a lab. NPR health correspondent Rob Stein has the details. ROB STEIN, BYLI

发表于:2019-01-16 / 阅读(74) / 评论(0)

2017年NPR美国国家公共电台3月

英语口语900句 16.08.对话.3.环境污染

Well,no one could survive without water.But you see pollution has been making more and more water unable for drinking. Yeah.Water pollution has for a long time been a major concern among the environmental issues. But what are the sources of water pol

发表于:2019-01-21 / 阅读(44) / 评论(0)

英语口语900句

【电影预告片填空】时光鸡大作战

I'm not gonna dress it up. Turkeys are dumb. Really dumb. You don't get it! They're fatting us up to eat us! - Hey! Corn! - Corn! See you later, Reggie. From the academy award winning producer of Shrek We came to this farm for my favorite presidentia

发表于:2019-01-23 / 阅读(40) / 评论(0)

英文电影预告片填空

China to expand food contaminant monitoring

BEIJING, Jan. 25 (Xinhua) -- China has set a goal of equipping at least half of the country's county-level administrative regions to monitor various contaminants and harmful ingredients in food by the end of 2013. A new work plan, released on Friday

发表于:2019-02-06 / 阅读(49) / 评论(0)

英语新闻

饮红酒会延年益寿

Red wine can extend life and counter the negative effects of an unhealthy high-fat diet, according to a new study by Harvard Medical School. A natural substance found in red wine can extend life and counter the negative effects of an unhealthy high-f

发表于:2019-02-07 / 阅读(116) / 评论(0)

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学英语单词

-amine

absorbing absolutely convex closed set

Alaska long period array

apicifixed

ariba

assimilatory efficiency