题型:阅读理解 题类:常考题 难易度:普通
吉林省长春市2017-2018学年高一下学期英语期中考试试卷
Building your healthy diet
Although some extreme diets may suggest something else, we all need a balance of protein ( 蛋白质), fat, carbohydrates ( 碳水化合物), fiber, vitamins, and minerals in our diets to keep a healthy body. You don't need to remove certain kinds of foods from your diet, but rather select the healthiest ones.
Protein
Protein gives us the energy to get up and go — and keep going — while also supporting mood and cognitive function. Too much protein can be harmful to people with kidney ( 肾 ) disease, but the latest research suggests that many of us need more high-quality protein, especially as we grow up. That doesn't mean you have to eat more animal products — a variety of plant-based sources of protein each day can ensure your body gets all the essential protein it needs.
Fat
Not all fat is the same. While bad fat can destroy your diet and increase your risk of certain diseases, good fat protects your brain and heart. In fact, healthy fat — such as omega-3s — is necessary to your physical and emotional health. Understanding how to include more healthy fat in your diet can help improve your mood and your well-being.
Fiber
Eating foods high in dietary fiber (grains, fruit, vegetables, nuts, and beans) can help you stay regular and lower your risk of heart disease, stroke, and diabetes. It can also improve your skin and even help you to lose weight. Depending on your age and gender, nutrition experts suggest you eat at least 21 to 38 grams of fiber each day for optimal (最 佳的) health. Unfortunately, most of us aren't eating even half that amount.
Calcium (钙)
Your body uses calcium to build healthy bones and teeth, keep them strong, send messages through the nervous system, and regulate the heart's rhythm. Not getting enough calcium in your diet can also lead to anxiety, depression, and sleep difficulties. Whatever your age or gender (性别), it's necessary to include calcium-rich foods in your diet.
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