Passage One Many people believe that taking vitaminsupplements is the best safeguard against the dangers of an incomplete diet butthis should be a last resort rather than a way out of a problem. Even if thereis a genuine need for extra vitamins, then sooner or later the question arises"which ones do I need, how much of them, and how often?" There isreally no simple answer to this question. The Food Standards Committee suggestsin their recent report to the government that we do not need any extravitamins. They say that they are"not necessary for a healthy individualeating normal diet". Whilst few of us would challenge their authority onthe subject of nutrition, it is, perhaps, pertinent to ask the question"how many of us are healthy, and what is a normal diet?" There is anelement of doubt in many minds about these two aspects and though few peopleare familiar with the wording of the Food Standards Report they do wonderinstinctively if they are eating the right things. The blame for faulty eatinghabits is often placed at the door of the ubiquitous junk and conveniencefoods. As we have seen, some of these are not the criminals they are made outto be. White bread is only slightly less nutritious than brown bread and frozenvegetables can be almost as"fresh"as fresh food. There are very fewfoods which can really be described as pure rubbish. Many pre-packed foodscontain too much sugar and we would all benefit by avoiding these, but mosttinned, processed and dried foods contain useful amounts of fat, protein,carbohydrate, vitamins and minerals. The addition of a small amount of fruit ora side salad to convenience foods such as pizzas or hamburgers can turn a snackinto a well-balanced meal. "Junk" food is difficult todefine. White sugar is probably the nearest contender for the title. Itcontains plenty of calories for energy but not much else, and is oftendescribed as an"empty calorie" food. Alcohol is also high incalories. but beer and wine contain some of the B vitamins and wine is a goodsource of iron, so even a teetotaler could not describe all alcohol asuseless, nutritionally speaking. Calories measure the energy we derive from thefood we eat, and sugar and alcohol are sometimes described as having a highenergy density. There is a limit to the amount of energy we need each day(2,000~2,200 calories is the average for women and 2, 500~3,000 for men) and ifwe eat too much sugar and alcohol there is no appetite left for thevitamin-rich foods we need-fish, meat, fruit and vegetables. Buying vitaminscan be predicted by psychological as well as nutritional motives and it isprudent to investigate why we think we need them and what benefits we expectfrom them before we rush off to the health shop to make our purchases.
According to the Food Standards Committee,_______
A、many of us do not have a healthy diet
B、many of us need to think twice about our eating habits
C、people do not need extra vitamins if they have a normal diet
D、people must have extra vitamins as a safeguard against illnesses
【正确答案】：C
