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
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.
Not so many years ago, the word vitamin was known only to a few scientists. Today it is very widely
used, and the importance of vitamins in your foods is common knowledge.
Vitamins are life-giving substances found in foods and are needed for the proper growth and general
health of the body. The different kinds of vitamins are indicated by letters of the alphabet. At the present time,
vitamins A, B1, B2, C, D, E and G are known. A proper diet should contain a collection of foods in which all
of these vitamins are present. Vitamins are also prepared and sold in tablet and capsule form.
Each vitamin has its particular work to do in the life-giving process. Vitamin B1, for example,
benefits appetite and digestion. It also helps the body grow. Another vitamin helps the blood to clot, so that
danger of bleeding to death in case of injury is lessened. Still another makes the eyes stronger of seeing at
night. Airplane pilots need plenty of this vitamin. Scientists think vitamins may have some effect on keeping
the hair from turning gray.
26. What is the main idea of the passage?
A. the important role of vitamins
C. How to use vitamins
27. What should a good diet contain?
A. all kinds of meat and beef
C. different kinds of foods.
28. We know the name of vitamins through
A. the pictures
C. the letters of the alphabet
B. prevention of diseases
D. how scientists discovered vitamins
B. eggs and meats
D. more vegetables
B. the food
D. the different tastes
29. The word "it" in the last paragraph refers to which of the following?
A. vitamin B1
B. work
C. process
30. Which of the following is NOT true according to the passage?
A. Scientists have found 8 types of vitamins.
D. digestion
B. Vitamins can be prepared in tablet and capsule form.
Vitamins have an important effect on health.
D. Each vitamin has its particular work to do.