完形填空
阅读下面的短文，文中有15处空白，每处空白给出了4个选项，请根据短文的内容从4个选项中选择1个最佳答案。
Eat for a Good and Healthful Life
Food __1__ us alive. It is our sustenance and our pleasure. But recently, research has shown that the eating habits of the average Americans may be dangerous to future health.
The foods Americans now choose are oftentimes too __2__ in calories and fats, so this article reports a new study: Diet and Health, Implications for Reducing Chronic Disease Risk.
The study, conducted __3__ the National Research Council's committee on Diet and Health, __4__ that balancing nutrition, calories and activity is key __5__ enjoying a long and healthful life.
The report recommends that most Americans increase __6__ activity to a moderate level and make changes in food __7__ and calories intake to maintain ideal weight. Most of us --- even those of us at ideal weight --- need to eat __8__ fat so that no more than 30% of our daily calories will come from fat.
That means cutting __9__ on red meat and whole milk dairy products. __10__, eat fish, chicken without skin, lean meats, and low-fat and no-fat dairy products.
The report of the Committee on Diet and Health recommends we eat five or more 1/2-cup servings of vegetables and fruits __11__ --- especially green and yellow vegetables and citrus fruits.
Eating more fruits and vegetables doesn't have to mean increased calories intake. Many plant foods are nutrient-rich: they provide many vitamins and minerals for very few __12__.
Nutrient-rich foods are particularly important for Americans __13__ age 50. As we __14__, we need to eat less because our bodies need __15__ calories to function properly. But we still need full measures of vitamins and minerals to release the energy in our foods and make us feel strong and healthy.
1. A remain B remains C keep D keeps
2. A full B rich C little D special
3. A by B at C with D for
4. A doubts B concludes C knows D reasons
5. A about B to C of D for
6. A mental B spare C physical D chemical
7. A choose B chooses C chose D choices
8. A little B much C less D more
9. A up B down C hard D off
10. A However B Or C Indeed D Rather
11. A day B daily C year D annually
12. A nutrition B nutritions C calorie D calories
13. A over B under C for D in
14. A older B old C age D grow
15. A less B. fewer C more D enough
