题目：
A community nurse visits a family living in a rural area where the drinking water is not fluoridated. Which of the following would the nurse suggest to the family as the most appropriate means for obtaining a significant amount of fluoride
A. Tea.
B. Yogurt.
C. Citrus juices.
D. Natural cheeses.
答案：
参考答案：A
解析：Most foods contain limited amounts of fluoride. However, tea contains a significant amount of fluoride and would be the most appropriate suggestion.
