Read the following passage and mark the letter A, B, c or D on your answer sheet to indicate the correct word or phrase that best Jits each of the numbered blanks. When man first learnt how to make fire, he began to use fuel for the first time. The fuel he used was probably wood. As time passed, man eventually discovered that substances such as coal and oil would (23)__________. Coal was not used very widely as a (24)_________ of energy until the last century. With the coming of the industrial revolution, it was soon realized that production would double if coal was used instead of wood. Nowadays, (25)__________of the huge factories and electricity stations would be unable to function if there was no coal. the last twenty or thirty years, (26)_______, the use of coal has declined. As a result, there have been changes in the coal industry. It is (27)_________ that more people would use coal if oil and gas were not available. 23.A. heat B. bum C. fire D. light 24. A. resource B. reason C. cause D. source 25. A. much B. many C. more D. few 26. A. however B. therefore C. because D. since 27. A. believed B. considered C made D. provided 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 our 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, Bl, 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. 28. Which of the following is NOT directly stated in the article but is a reasonable conclusion from the reading? A. Scientists have known about vitamins for centuries. B. Vitamins are medicines given to cure diseases. C. To get all the vitamins a person must eat a variety of foods. D. A few people know the value of vitamins. 29. This article as a whole is about ___________. A. diet in relation to health B. prevention of diseases C. what vitamins are and what they do D. how scientists discovered vitamins 30. We know the name of vitamins through__________. A. the pictures B. the food C. the letters of the alphabet D. the different tastes 31. The word “another” in the last paragraph refers to which of the following? A. vitamin B. food C. diet D. medicine 32. Which of the following is NOT true according to the passage? A. Vitamins can be taken only by eating the foods in which they are found. B. Vitamins can be prepared in tablet and capsule form, C. Vitamins have an important effect on health. D. Each vitamin has its particular work to do.