Lê Quỳnh  Anh

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.

        Scientists do not yet thoroughly understand just how the body of an individual becomes sensitive to a substance that is harmless or even wholesome for the average person. Milk, wheat, and egg, for example, rank among the most healthful and widely used foods. Yet these foods can cause persons sensitive to them to suffer greatly. At first, the body of the individual is not harmed by coming into contact with the substance. After a varying interval of time, usually longer than a few weeks, the body becomes sensitive to it, and an allergy has begun to develop. Sometimes it's hard to figure out if you have a food allergy, since it can show up so many different ways.

       Your symptoms could be caused by many other problems. You may have rashes, hives, joint pains mimicking arthritis, headaches, irritability, or depression. The most common food allergies are to milk, eggs, seafood, wheat, nuts, seeds, chocolate, oranges, and tomatoes. Many of these allergies will not develop if these foods are not fed to an infant until her or his intestines mature at around seven months. Breast milk also tends to be protective. Migraines can be set off by foods containing tyramine, phenathylamine, monosodium glutamate, or sodium nitrate. Common foods which contain these are chocolate, aged cheeses, sour cream, red wine, pickled herring, chicken livers, avocados, ripe bananas, cured meats, many Oriental and prepared foods (read the labels!).

        Some people have been successful in treating their migraines with supplements of B-vitamins, particularly B6 and niacin. Children who are hyperactive may benefit from eliminating food additives, especially colorings, and foods high in salicylates from their diets. A few of these are almonds, green peppers, peaches, tea, grapes. This is the diet made popular by Benjamin Feingold, who has written the book “Why your Child is Hyperactive”. Other researchers have had mixed results when testing whether the diet is effective.

The word "these" in line 18 refers to___________.

A. food additives

B. food colorings

C. innutritious foods

D. foods high in silicates

Dương Hoàn Anh
27 tháng 7 2017 lúc 8:54

Đáp án D.

Key words: these, line 18 refers

Clue: “Children who are hyperactive may benefit from eliminating food additives, especially colorings, and foods high in salicylates from their diets. A few of these are almonds, green peppers, peaches, tea, grapes”: Trẻ em bị hiếu động có thể có lợi từ việc loại bỏ các chất phụ gia thực phẩm, đặc biệt là chất màu, và thực phẩm có salicylat cao trong khẩu phần ăn của chúng. Một vài trong s đó là hạnh nhân, ớt xanh, đào, chè, nho.

Khi cần nói tới cụm từ số nhiều trước đó mà không muốn nhắc lại y nguyên ta dùng these. Dựa vào phần dịch nghĩa phía trên thì these là để thay thế cho cụm từ foods high in salicylates: thức ăn có hàm lượng salicylate cao.

Vậy đáp án chính xác là D.

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