Read the article below and decide which answer best fits each space. Đọc đoạn văn dưới và chọn từ thích hợp cho mỗi chỗ trống.


The food we eat seems to have profound ___(1)___ on our health. Although science has made enormous ___(2)___ in making food more fit to eat, it has, at the same time, made many food unfit to eat. Some research has shown that perhaps 80% of all human illnesses are related to diet and 40% of cancer is related to the diet as ___(3)___, especially cancer of the colon. Different cultures are more prone to ___(4)___ certain illnesses because of the food that is characteristic in these cultures. ___(5)___ food related to illness is not a new discovery. In 1945, government researchers realized that nitrates and nitrites, commonly used to preserve color in meats, and other food additives, caused cancer. Yet, these carcinogenic additives remain in our food, and it becomes more difficult all the times to know which things on the packaging labels of processed food are helpful or harmful. The additives, which we eat, are not all so direct. Farmers often give penicillin to beef or poultry, and because of this, penicillin has been found in the milk of treated cows. Sometimes similar drugs are ___(6)___ to animals not for medicinal ___(7)___ but for financial ___(8)___. The farmers are simply trying to fatten the animals in order to ___(9)___ a higher price on the market. Although the Food and Drug Administration (FDA) has tried repeatedly to control these procedures, the ___(10)___ continue.