【科学60秒】伏特加口感学问大_英语听力练习mp3下载-科学-沪江听力酷

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【科学60秒】伏特加口感学问大

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I once took part in a vodka tasting contest, in which participants tried to tell an expensive brand from a cheap one. I don’t recall the exact outcome, for obvious reasons. But I do know that several people swore they could taste the difference.
Well, maybe they could. Because according to a study in the Journal of Agricultural and Food Chemistry, different vodkas can have different molecular “structures,” which could drive drinkers to favor one brand over another.
Vodka’s an ___1___ beverage that’s supposed to be relatively flavorless. So researchers got to wondering: ___2___
Being good little scientists, they ___3___ out their ___4___ equipment and examined the chemical signatures of five different vodkas. What they found is that each brand differs in how its ethanol molecules cluster. In the ethanol-water ___5___ we call vodka, some of the ethanol molecules get surrounded by a sort of “cage” made of water. And different brands differ in how much ethanol is caged. Vodkas with fewer cages might seem more “watery” than those with more structure.
Of course, drink enough of the stuff and it really won’t matter how tightly caged it is. You’ll be loose as a grey goose.