单词：oxygen carrying capacity
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SCIENCE IN THE NEWS - Medical Experts Debate Value of Alcohol Use This is SCIENCE IN THE NEWS in VOA Special English. Im Barbara Klein. And Im Bob Doughty. Drinking alcohol is socially acceptable behavior in many parts of the world. Some medical expe
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Summer is here and though it is the time for outdoor fun and play, it is also the time to start thinking about protecting ourselves from extreme heat. Extreme heat can cause serious health problems. But, you can do something about it. little sunshine
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How much alcohol the yeast can tolerate depends partly on the type of yeast. And thats another reason wine is stronger than beer: beer-yeast, with a lower tolerance for alcohol, is killed by the time the alcohol reaches about nine percent. Wine-yeast
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You start with a liquid containing some kind of sugar, add yeast, and wait. The yeast digests the sugar, giving off alcohol in the process. The sugar in beer comes mostly from a grain called barley. With wine, the sugar usually comes from grapes. Eit
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From VOA Learning English, this is Science in the News. Im Bob Doughty. And Im Kelly Jean Kelly. Drinking alcohol is a socially acceptable behavior in many parts of the world. Some medical experts say light drinking may even be good for your health,
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Wine And Beer: Different Types Of Alcohol, Same Basic Process Why wine is stronger than beer on this moment of science. Wine and beer are made of different ingredients,but the basic process is the same. You start with a liquid containing some kind of
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