Good general nutrition is essential to maintaining a healthy, youthful appearance. And the key to good general nutrition is balance. Proteins should make up roughly ten percent of your daily calorie intake; no more than 30 percent should come from fats; and the remaining calories should come mostly from complex carbohydrates.
1. The passage primarily tells us how to lose weight so as to improve ones appearance.
2. Dark-green leafy vegetables are good sources of beta carotene.
3. When one gains weight, the skin becomes loose.
4. It is particularly important for the old to drink 6 to 8 glasses of water to help keep skin and other tissues hydrated.
5. Food low in protein is harmful to hair.
6. Free radicals play an important role in immune function.
7. In order to look younger, one should cut back on fats.
8. Amino acids are the building blocks of______.
9. Genes are______than diet in determining ones looks.
10. The body changes______into vitamin A.
答案:I. N 2. Y 3. N 4. Y 5. Y 6. N 7. NG 8. protein 9. less important 10. beta carotene
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