单选题 Generations of Americans have been brought ____ 1____ to believe that a good breakfast is impor-tant fof health. Eating breakfast at the ____ 2____of the day, we have all been ____ 3____, is as necessaryas putting gasoline in the family car ____ 4____starting a trip. But for many people the thought of food first in the morning is by ____ 5____pleasures. So ____ 6____ all the efforts, they still take no ____ 7____ Between 1978 and 1983, the latest years for which figuresare ____ 8____ ,the number of people who didn' t have breakfast increased ____ 9____33 percent-from 8.8million to 11.7 million____10____the Chinese-based Market Research Corporation of America. For those who feel pain of ____11____ about not having breakfast,____ 12____. there is some goodnews. Several studies in the last few years ____ 13____that, for adults especially, there may be nothing____14____with omitting breakfast. "" Going ____ 15____breakfast does not affect ____ 16____"Said Amold E.Bendoer, former professor of nutrition at Queen Elizabeth College in London, ____17____does givingpeople breakfast improve performance. ____18____evidence relating breakfast to better health or ____ 19____performances is surprisingly inade-quate, and most of the recent work involves children, not ____ 20____ "The literature," says one researcher, Dr. Ernesto Pollitt at the University of Texas."is poor.