People are paying more and more attentions to healthy diet , so nutrition(营养学) is growing an important science . Do you have any nutrition knowledge ? How much do you know about good nutrition ? Let’s have a test by judging true or false on the following points.1. People who don’t eat meat can stay healthy .True . As long as people eat enough milk , eggs and meat alternates(替代品) ，they can get enough protein .2. Food eaten between meals can be just as good for health as food eaten at regular meals.Ture . Nutritional value depends on what types of food you eat , not when you eat them . Eating an egg or fruit between meals can contribute to a good diet .3. Fresh vegetables are always more nutritious than canned vegetables .False . The difference depends more on how vegetables are prepared than whether they are fresh or canned . Vegetables cooked in too much water can lost a great amount of vitamins .4. Natural vitamins are better than synthetic(合成的) vitamins .False . There is no difference . A vitamin has the same propetives(性质) and specific chemical structure whether made in a laboratory or taken from plant or animals parts .5. Older people need the same amount of vitamins as younger people .True . Although older people need fewer calories(卡路里) . Certain illnesses raise the requirements for some vitamin , but that is true for the young as well as the old .6. Food grown in poor soil is lower in vitamins than food grown in rich soil .False . The vitamin in our foods are made by the plants themselves . They don’t come from the soil . However , the minerals in a plant depend on the minerals in the soil . If you have answered these questions correctly , you can say you know much about food and nutrition by today’s standards . But remember that it may change as new information develops .