单选题. Questions 22 to 25 are based on the passage you have just heard.7.
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单选题. Questions 16 to 18 are based on the passage you have just heard.1.
单选题. Food waste has been a chronic problem for restaurants and grocery stores—with millions of tons lost along the way as crops are hauled hundreds of miles, stored for weeks in refrigerators and prepared on busy restaurant assembly lines. But the historically high price of products is making it an even bigger drag on the bottom line. Restaurants, colleges, hospitals and other institutions are compensating for the rising costs of waste in novel ways. Some are tracking their trash with software systems, making food in smaller packages or trying to compost (将……制成堆肥) and cut down on trash-hauling costs. "We have all come to work with this big elephant in the middle of the kitchen, and the elephant is this 'It's okay to waste' belief system," said Andrew Shackman, president of LeanPath, a company that helps restaurants cut back food waste. The interest level in cutting food waste "has just skyrocketed 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 the National Restaurant Association. Freshman students at Virginia Tech were surprised this year when they entered two of the campus's 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. "It's 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.1. High price of products makes the problem of food waste ______.
单选题. Questions 16 to 18 are based on the passage you have just heard.1.
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单选题. Questions 3 and 4 are based on the news report you have just heard.3.
单选题《复合题被拆开情况》 Academic dishonesty is nothing new. As long as there have been homework assignments and tests, there have been cheaters. The way that cheating looks has changed over time, though, particula
单选题. Questions 8 to 11 are based on the conversation you have just heard.1.
单选题《复合题被拆开情况》 A new study shows that students learn much better through an active, iterative 迭代的 process that involves working through their misconceptions with fellow students and getting immediate feed
单选题. Questions 23 to 25 are based on the passage you have just heard.8.
单选题. Questions 19 to 21 are based on the passage you have just heard.4.
单选题《复合题被拆开情况》 By almost any measure, there is a boom in Internet-based instruction. In just a few years, 34 percent of American universities have begun offering some form of distance learning DL, and amo