单词：glucose yeast water
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Broadcast: July 15, 2003 (THEME) VOICE ONE: I'm Sarah Long with Bob Doughty, and this is the VOA Special English program, SCIENCE IN THE NEWS. VOICE TWO: This week -- a report on the problem of drug r
VOA2003（下）-发展与科学
Narration: Carrie, Cici and Wing are co-worker of a company. This day they are talking in the office. Ca: Bingo! I finally finish this case. It is really tough! I have not slept well for almost a week. Wing: Me too .I always get so busy in this seaso
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This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Hard-training athletes boost their performance with a variety of popular sports drinks. These drinks do work. But not in the way youd think. Thats acco
Scientific American(四)月
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
Scientific American(四)月
Todd: Ah, so Alan, you know, you were a baker so can you explain to the listeners: how do you bake bread? Alan: Well, you need, to make your basic white bread, white pan bread we call it, you need flour, yeast, sugar, shortening, salt, and water, so
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