卫生类：完形填空Eat for a Good
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 Councils 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 doesnt 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
答案及解析：
1.D.keep us alive使我们活下去。
2.B.rich in …富含……
3.A.conducted by…由。。主持。
4.B.从主语“研究”判断，空格处(谓语)的搭配词义应该是“结论”。
5.B.key to …对。。来说是关键。
6.C.A和C是词义相对的一组词，重点考察；而“身体活动”符合文章主题。
7.D.空格处需要名词。
8.C.fat是不可数名词，且从句意上看 less合适。
9.B.cut down on是减少。
10.C.从空格所在的使用结构排除B和D，再用排除法借助句意关系排除A.
11.B.空格处需要副词，句意上选择“每天”。
12.D.“营养”是不可数名词，“卡里拉(热量单位)”是可数名词，所以排除A和C.而for在这里是表示关联或联系 。 如： took two steps back for every step forward.(每前进一步向后退两步)
13.A.over 50是“50岁以上”。
14.C.空格处需要谓语，age是“变老”。
15.B.calories 是可数名词，且从句意看“年纪越大吃的越少”合适。