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Nội dung trong bức ảnh như sau:

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The additives that we eat are not all so direct. Farmers often give penicillin to cattle and poultry, and because of this, penicillin has been found in the milk of treated cows. Sometimes, similar drugs are administered to animals for not medicinal purposes, but for financial reasons. The farmers are simply trying to fatten the animals in order to obtain a higher price on the market. Although the Food and Drug Administration (FDA) has tried repeatedly to control these procedures, the practices continue.
27. Which of the following statements is NOT true?
A. Some of the additives in our food are added to the food itself.
B. Drugs are always given to animals for medical reasons.
C. Food may cause forty percent of the cancer in the world.
D. Perhaps eighty percent of all human illnesses are related to diet.
28. What are nitrates used for?
A. They preserve flavor in packaged foods.
B. They are the objects of research.
C. They preserve the color of meat.
D. They cause the animals to become fatter.
29. What is the best title for this passage?
A. The Food You Eat Can Affect Your Health B. Harmful and Harmless Substances in Food
C. Avoiding Injurious Substances in Food D. Improving Health through a Natural Diet
30. The word “it” in paragraph 1 refers to _____
A. diet B. meat C. color D. science
31. The word “purposes” is closest in meaning to _____
A. objectives B. processes C. relatives D. inactivities
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.
Having no language, infants cannot to tell what they need to learn. Yet by the age of
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