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  3. An artificial "tongue" which can taste subtle differences between whiskies can help tackle the counterfeit alcohol trade, accord

An artificial "tongue" which can taste subtle differences between whiskies can help tackle the counterfeit alcohol trade, accord

admin2021-06-15  2
问题         An artificial "tongue" which can taste subtle differences between whiskies can help tackle the counterfeit alcohol trade, according to engineers.
        They have built a tiny taster which exploits the properties of gold and aluminium to test differences between the spirits.
        The technology can pick up on the subtler distinctions between the same whisky aged in different barrels.
        It can tell the difference between whiskies aged for 12, 15 and 18 years. Engineers say the tongue "tasted" the differences with greater than 99% accuracy.
        Alasdair Clark, of the University of Glasgow’s school of engineering, said: "We call this an artificial tongue because it acts similarly to a human tongue—like us, it can’t identify the individual chemicals which make coffee taste different to apple juice but it can easily tell the difference between these complex chemical mixtures."
        "We’re not the first researchers to make an artificial tongue, but we’re the first to make a single artificial tongue that uses two different types of nanoscale metal ’taste buds’, which provides more information about the ’taste’ of each sample and allows a faster and more accurate response.
        He said the tongue could be used to "taste" virtually any liquid—not just whisky.
        Dr. Clark added: "In addition to its obvious potential for use in identifying counterfeit alcohols, it could be used in food safety testing, quality control, security—really any area where a portable, reusable method of tasting would be useful."
        Whisky was poured over a chequerboard pattern of the two metals—which act as "taste buds"— and researchers then measured how they absorbed light while submerged.
        Subtle differences which were highlighted on the artificial tongue allowed the team to identify different types of the spirits.
        The team used the tongue to sample a selection of whiskies from Glenfiddich, Glen Marnoch and Laphroaig.
        Research was conducted by engineers and chemists from the universities of Glasgow and Strathclyde.
        Their paper, titled "Whisky tasting using a bimetallic nanoplasmonic tongue", is published in Nanoscale.
How do researchers use the "artificial tongue" to taste subtle differences between whiskies?
选项 A、By taste buds.
B、By identifying chemicals.
C、By the "taste" of each sample.
D、By the way to absorb light when submerged.
答案D
解析 细节题。题干：研究人员如何使用“人造舌头”来品尝威士忌之间的细微差别?该题的关键词是subtle differences，根据关键词定位到文章倒数第四段，结合文章结构可知前一段描述的就是判断细微差别的方法。倒数第五段给出的方法是“Whisky was poured over a chequerboard pattern of the two metals—which act as ‘taste buds’—and researchers then measured how they absorbed light while submerged.(研究人员将威士忌倒在这两种金属构成的棋盘图案上，然后测量它们浸没时吸收光线的情况)”，由此可知研究人员是通过“味蕾”在被威士忌浸没时吸收光线的情况判定威士忌之间的细微差别，D项“通过浸没时吸收光线的情况”为本题正确答案。A项“通过味蕾”，“人造舌头”并不是真的拥有味蕾这一构造，故排除。B项“通过辨别化学物质”，在文章第五段中就提到“人造舌头”并不能辨别单个的化学物质，故排除。C项“通过每个样品的‘味道’”，并不是文章给出的确切的科学解释，故排除。故本题选D。
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