Read the following passage and mark the letters 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. 

Question According to the passage, the difficulty in diagnosing allergies to foods is due to ___________.         


A. the vast number of different foods we eat         


B. lack of a proper treatment plan         


C. the similarity of symptoms of the allergy to other problems         


D. the use of prepared formula to feed babies  

Đáp án và lời giải
Đáp án:C
Lời giải:

Đáp án C

Theo đoạn văn, những khó khăn trong việc chẩn đoán dị ứng với thực phẩm là do _______.

A. số lượng lớn các loại thực phẩm khác nhau mà chúng ta ăn

B. thiếu một kế hoạch điều trị thích hợp

C. sự giống nhau của các triệu chứng của dị ứng với các vấn đề khác

D. việc sử dụng các công thức chuẩn bị cho bé ăn

Thông tin ở 2 câu trong bài:

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.

Đôi khi thật khó để tìm ra nếu bạn bị dị ứng thực phẩm, vì nó có thể biểu hiện lên rất nhiều cách khác nhau. triệu chứng của bạn có thể bị gây ra bởi nhiều vấn đề khác.    

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