The interest in cutting food waste “has just rocketed in the last six to nine months，” he said.

　　Roughly 30 percent of food in the United States goes to waste, costing some $48 billion annually, according to a Stockholm International Water Institute study. A University of Arizona study estimated that 40 to 50 percent of food in the United States is wasted. Wholesale food costs have risen more than 8 percent this year, the biggest jump in decades, according to the National Restaurant Association.

　　Freshman students at Virginia Tech were surprised this year when the two of the campus? biggest dining halls to find there were no trays.

　　“You have to go back and get your dishware and your drink, but it?s not that different，” said Caitlin Mewborn, a freshman. “Its not a big trouble. You take less food, and you don’t eat more than you should.”

　　Getting rid of trays has cut food waste by 38 percent at the dining halls, said Denny Cochrane, manager of Virginia Tech’s sustainability program. Before the program began, students often grabbed whatever looked good at the buffet (自助餐), only to find at the table that their eyes were bigger than their stomachs, he said.

　　5．High price of products makes the problem of food waste ________.

　　A．less challenging

　　B．more unbelievable

　　C．less noticeable

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