( D )
Your body works 24 hours a day. It’s always building and repairing, feeding and cleansing itself. Its goal is to be ready for your every movement, breath, and thought. The quality of your life depends on how well your body works. And how well your body works depends on how much energy it gets. Energy es from the food you eat. Food contains nutrients that your body needs for growth and energy.
By eating a balanced diet, your body gets the six important nutrients it needs. Minerals（矿物质） are nutrients that build bones and teeth. Minerals also form red blood cells and other substances. Water aids digestion and waste removal. Carbohydrates（碳水化合物） give your body its main source of energy. Two carbohydrates are sugars from foods such as fruits and vegetables and starches found in rice, potatoes, and bread. Fats help build cell membranes（膜）. Proteins repair and grow body tissues（组织）. Finally, vitamins help your body use carbohydrates, fats, and proteins.
The United States Department of Agriculture（USDA） has created a nutritional food pyramid（金字塔）. It shows the daily number of servings you should eat from five food groups. The food pyramid has four levels. The base of the pyramid is the largest level. It contains the bread, cereal, rice, and pasta group from which you need six to eleven servings. The next level has two food groups: vegetables and fruits. The USDA remends three to five servings of vegetables and two to four servings of fruit. The third level also has two groups: the milk, yogurt, and cheese group and the meat, poultry, fish, dry beans, eggs, and nuts group. You need two to three servings from each of these groups. The top of the pyramid is the smallest level. It contains fats, oils, and sweets. These foods have few nutrients, so eat them sparingly（有节制地）.
【小题1】What is the main idea for this passage ?A．Eating a balanced diet gives your body the energy it needs.B．The top of the pyramid is the smallest level. C．Meat, poultry, fish, dry beans, eggs, and nuts are on the third level.D．We should have a nutrition food pyramid.【小题2】The first paragraph suggests that ?A． food is something that cleanses your body.B．food can improve the quality of your life.C．food should be eaten at night as well as during the day. D．food will make it easier for you to exercise.【小题3】By eating a balanced diet, your body gets the important nutrients it needs.A．fourB．fiveC．sixD．seven【小题4】A balanced diet .A．is made up of foods from five food groups.B．includes many foods containing fat.C．includes six to eleven servings of fruit.D．can be got by taking vitamins.【小题5】To help the reader understand the six nutrients needed by the body, the author .A．describes the five basic food groups.B．explains what a balanced diet is.C．writes the details of each nutrient.D．tells the number of daily servings needed from each food group.A
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(答案→)A
解析：本文主要介绍了食品和营养的不同种类和具体的信息分类。
【小题1】A 主旨大意题。根据文章1,2段Food contains nutrients that your body needs for growth and energy.By eating a balanced diet, your body gets the six important nutrients it needs可知A项是本文的中心思想，故A正确。
【小题2】B 推理题。根据文章第一段最后一句Food contains nutrients that your body needs for growth and energy.
可知推理到最后，食物在人的生命中是最重要的。故B正确。
【小题3】C 细节题。根据文章第二段第一句By eating a balanced diet, your body gets the six important nutrients it needs.可知C正确。
【小题4】A 细节题。根据文章第三段1,2行The United States Department of Agriculture（USDA） has created a nutritional food pyramid（金字塔）. It shows the daily number of servings you should eat from five food groups.可知A正确。
【小题5】C 推理题。根据文章第二段Minerals（矿物质） are nutrients that build bones and teeth. Minerals also form red blood cells and other substances. Water aids digestion and waste removal. Carbohydrates（碳水化合物） give your body its main source of energy. Two carbohydrates are sugars from foods such as fruits and vegetables and starches found in rice, potatoes, and bread. Fats help build cell membranes（膜）. Proteins repair and grow body tissues（组织）. Finally, vitamins help your body use carbohydrates, fats, and proteins.可知C项内容正确