American Incentive Student of University Economizes a Commissary The once-seen-everywhere cafeteria tray .with so many glass

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问题           American Incentive Student of University Economizes a Commissary
    The once-seen-everywhere cafeteria tray .with so many glasses of soda, juice and milk lined up across the fop, could soon join the typewriter as a campus relic. Scores of colleges and universities across the country are shelving the trays in hopes of conserving water, cutting food waste and saving money. Some even believe trayless cafeterias could help avoid the dreaded "freshman 15" the number of pounds supposedly gained in the first year on campus.
    The Sustainable Endowments Institute, a research organization that tracks environmental practices at the 300 colleges and universities with the largest endowments, said that 126 of them had reduced use of trays, some of them getting rid of trays only in certain dining halls,and some introducing,for example, "trayless Tuesdays". Such moves are often part of a larger push to embrace environmental ism that includes hiring susta-inability coordinators, introducing solar panels, disposing dining-hall waste and encouraging students to turn off lights with attractive sayings.
    Joseph H. Spina, executive director of the National Association of College and University Food Services, described trayless dining as "sort of the hot thing right now", officials said their decision to go trayless was mainly about atmosphere, though they welcomed any ecological benefit. But while the environ-mental benefits are real, going trayless is not a cure-all. At Skidmore.the all-you-can-eat format and multiple food stations, featuring vegetables, Italian and classic comfort foods, encourage students to look around,taking a bit of this and a little of that. But this system also leads to overcrowded dining halls as diners return to the lines for seconds.
    As part of her senior honors thesis,Sarah Whateley, an environmental studies major, conducted a research project to demonstrate how much food was still wasted in the dining hall. She asked students to put their leftovers into plastic bins over two days, yielding 330 pounds of food on a Sunday and 403 pounds on a Monday. The food services staff then illustrated that quantity by stacking the equivalent weight in boxes of rice in the entrance of the dining hall.
    Dr. Spina, of the college food service association, cited another benefit: " You eventually have to learn how to hold your hors d’oeuvre and cocktail in one hand while
making conversation with the other. So it’s a life lesson."
Why do colleges and universities decide to stop using trays?

选项 A、Because it can help colleges and universities save money on the cost of food.
B、Because colleges and universities don’t want their students to gain much weight.
C、Because it can make students have the habit of saving water, food and money.
D、Because colleges and universities find it hard to have enough shelves for trays.

答案A

解析 事实细节题。由题干中的colleges and universities decide to stop using trays定位到第一段第二句。本句说:全国几十所大学和学院都打算把托盘搁置起来,希望可以借此节水、减少食物的浪费,还可以省点钱。因此[A]“学校可以节省花在食物上的钱”为正确答案。虽然有人认为这样可以避免大一新生长胖,但文章没有说[B]“学校不想让学生体重增加”,故排除;文章没有提到[C]“这样可以让学生知道节省",故排除;本句是说学校打算把托盘放在架子上,就不再使用了,而不是[D]“学校没有足够的地方放托盘”,故排除。
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