China's diet is a kind of omnivorous food structure with agricultural products as the main part and meat as the auxiliary. ( )

The results of the survey are ______ and useful despite being from a small sample.

Today, people have adopted vegetarian diets based on scientificstudies showing that diets high in fatty animal foods may cause theearly development of disease, including obesity, high blood pressure,and cancer. The United States Surgeon General's report on nutritionand health urged American to eat less animal fats, such as those foundin meat and dairy products, and to eat more fruits, vegetables, andwhole grains.The vegetarian plant-based diet typically has the advantageof being low in fat, cholesterol, and salt, but it can be lacking inother ways. Vegetarians need to plan their diets with special carein order to obtain the essential nutrients received from diets thatinclude meat, fish, and poultry. Following the Pyramid Food Guidepublished by the Department of Agriculture can help vegetariansmeet all their nutritional requirements. At the bottom of the pyramidare the grains, vegetables, and fruits that form the foundation ofa healthful diet. In the middle of the pyramid are foods from themilk group and the meat and beans group, which should be eatenin moderate amounts. At the top of the pyramid are high-fat andsugary foods, indicating that they should be eaten in small amountsor avoided altogether.

Some doctors claim that a vegetable diet is superior_________a meat diet. A: to B: than C: over D: against

We all need to have a more balanced diet to keep healthy. A: food B: drink C: meat D: milk