单选题 Generations of Americans have been brought up to believe that a good breakfast is one of life' s essentials. Eating breakfast at the start of the day, we have all been told, is as necessary as putting gasoline in the family car before starting a trip. But for many people the thought of foods the first thing in the morning is by no means a pleasure. So despite on the efforts, they still take no breakfast. Between 1997 and 1983 , the latest years for which figures are available, the number of people who didn' t have breakfast increased by 33 percent—from 8. 8 million to 11.7 million—according to the Chicago—based Market Research Corporation of America. For those who feel pain or guilt about not eating breakfast, however, there is some good news. Several studies in the last few years indicate that, for adults especially, there may be nothing wrong with omitting breakfast. "Going without breakfast does not affect performance, " Said Arnold E. Bender , the former professor of nutrition at Queen Elizabeth College in London, " nor does giving people breakfast improve performance. " Scientific evidence linking breakfast to better health or better performance is surprisingly inadequate and most of the recent work involves children, not adults. "The literature, " says one researcher, Dr. Ernesto Poillit at the University of Texas, " is poor. "

【正确答案】 D

【答案解析】解析：本题为句义理解题。这句话应与前一句结合起来理解：“Going without break—fast does not affect performance…nor does givingpeople breakfast improve performance．”意为“不吃早餐不影响工作表现……而吃了早餐也不会改善工作表现”。故D正确。