According to the text, the “Pek Wine Steward” is ______.

参考答案:

DD事实细节题。Pek Wine Steward在文中多次提到，最开始是第二段开头“The Pek Wine Steward prevents wine from spoiling by injecting argon, an inert gas, into the bottle before sealing it airtight with silicon．”这可以说是对其功效及原理的一个解释——它通过在把酒用硅封盖之前注入惰性气体氩来防止酒变质，而究竟是什么东西还得看下面的论述。后面提到其发明者对市面