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.

The phrase "set off" is closest in meaning to______________.

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• The passage mainly discusses ______.

• What do you think the passage is mainly about ?

• Which of the following is NOT true about life in the future?

ZUNIA12

• Which of the following would be the best title for this passage?

• In the passage, the expression “children interrupt their education to go to school” mostly implies that ..........

• Which aspect of colonial printing does the passage mainly discuss?

• The word “key” in paragraph 1 could best be replaced by________.

• Which of the following might be the topic of the next paragraph?

• The word “captures” in the fourth paragraph is closest in meaning to ______.

• Which of the following would be the best title for the passage?

• The word “hidden” in paragraph 1 is closest in meaning to ______.

• The changes in the American home mentioned in this passage may ...............

• Which of the following is NOT mentioned in paragraph 3 about earthquakes?

• According to the passage, ..................

• The word “they” refers to ................

• Why was a coin produced in 1828 with only twelve stars?

• According to the passage, students working for their first degree at .............. are called undergraduates.

• The word "fine" in the passage is closest in meaning to ______.

• The word “bodies” in paragraph 3 refers to ...........

• Some songs of the Beatles now __________