There are two types of people in this world: those who regularly wash their office coffee cup. And those who only take it off th

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问题     There are two types of people in this world: those who regularly wash their office coffee cup. And those who only take it off their desk to cover up the coffee mark at the bottom with a fresh pour, driving away their shame with the reasoning that the heat must kill the bacteria or spine thing.
    Depending on which type of person you are, this will be either mildly annoying or more-than-mildly exciting. As Heidi Mitchell wrote in a recent Wall Street Journal column, it’s fine to never wash your cup, as long as you’re not sharing it with anybody else.
    There are two warnings to that statement, infectious-disease expert Jeffrey Strake, a professor at Baylor College of Medicine, told Mitchell; One, it only applies if you’re not sharing the cup with anybody else. And two, if you leave cream or sugar in your cup over the weekend, that can certainly cause mold(霉) to grow—in which case, wash it out.
    Otherwise, though, there’s not really much to worry about. "If I went and cultured the average unwashed coffee cup, of course I would find bacteria." Starke said. "But remember the vast majority came from the person who used the cup." Even if you drink from it while sick, it’s pretty hard to re-infect yourself with the same cup; most viruses don’t live long outside the body, which means that just letting your cup live in its own dirt may be a safer bet than the alternative; cleaning it with the disgusting sponge (海绵) in the office kitchen "The sponge in the break room probably has the highest bacteria count of anything in the office." Starke said if the idea of not washing horrifies you, just stick the sponge in the microwave before using. Otherwise, though, reel free to continue your lazy ways without guilt.
Where does the passage probably come from?

选项 A、A travel brochure.
B、A science magazine.
C、An official statement.
D、An entertainment program.

答案B

解析 推断题。A项,文章并没有讲旅游的事情;C项,本文不是一篇正式的声明;D项,本文没有讲到娱乐方面的事情。故选B。
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