Directions : There are three passages in this part. Each passage is followed by five questions. For each question there are four choices marked A, B, C and D. You should decide on the best choice and mark the corresponding letter on the Answer Sheet with a single line through the center.

Passage 1

　　Are you aware that you actually possess six senses? The sixth is a muscular sense responsible for directing your muscles intelligently---to the exact extent necessary for each action you perform. For example, when you reach for an object, the sensory nerves linking the muscles to the brain stop your hand at eh correct spot. This automatic perception of the position of your muscles on relation to the object is your muscular sense in action.

　　Muscles are stringy bundles of fibers varying from one five-thousandth of an inch to about three inches. They have three unique characteristics: they can become shorter and thicker; they can stretch; and they can retract to their original positions. Under a high-powered microscope, muscle tissue is seen as long, slender cells with a grainy texture like wood.

　　More than half a person's body is composed of muscle fibers, most of which are involuntary—in other words, work without conscious direction. The voluntary muscles, those that we move consciously to perform particular actions, number more than five hundred. Women have only 60 to 70 percent as much muscle as men for their body mass. That is why an average woman can't lift as much, throw as far, or hit as hard as an average man.

1) According to the selection, the muscular sense is responsible for____.
　 (A) the efficiency of our muscles
　 (B) the normal breathing function
　 (C) directing our muscles intelligently
　 (D) the work of only our involuntary muscles.
　
2) Intelligent use of the muscles means that____.
　 (A) one always knows what his muscles are doing.
　 (B) one performs simple actions without working
　 (C) one's muscles are used only to the extent necessary for each action they perform.
　 (D) one improves muscular action consciously
　
3) Muscles are unique fibers in that they can____
　 (A) contract
　 (B) stretch
　 (C) retract
　 (D) all of the above
　
4) According to the selection, more than half of a person's body is composed of ____.
　 (A) voluntary muscles
　 (B) involuntary muscles
　 (C) muscle fibers
　 (D) sensory nerves

5) An average woman is weaker than an average man because she has ____.
　 (A)  more voluntary muscles than an average man
　 (B) only 60 to 70 percent as much muscle as a man for her body mass
　 (C) 60 to 70 percent less muscle for her body mass
　 (D) less muscle fiber for her body weight

Passage 2 　　

　　There are many ways of putting out a fire.

　　You may have seen people put out burning cigarettes by stepping on them. Stepping on a burning cigarette shuts off the air and puts out the fire.

　　Many fires are put out with water. Water cools the material that is burning. It helps smother a fire, too. Some of the water is changed into steam when it strikes the hot fire. The stem shuts off air from the fire and helps put it out.

　　Some fires cannot be put out with water. They have to be smothered with sand or with chemicals of some kind, such as those used in some fire extinguishers. Suppose a tank full of gasoline is on fire. Gasoline is lighter than water. If you poured water into the tank of gasoline, the water would sink to the bottom of the tank. The gasoline would float on top of the water and would probably keep on burning. If you keep on putting water on the fire, the gasoline would flow over the edge of the tank. Then the fire would spread.

6)  What are the major ways of putting out fires as mentioned in the passage? _
　 (A) With water and with sand and chemicals.
　 (B)  With water and with sand and steam. 　
　 (C)  With water and with steam
　 (D) With water and materials and chemicals.
　
7) Water can put out a fire because _______________.
　 (A)  water is cold and cool. .
　 (B)  water is the only way to put out a fire.
　 (C) water cools the material on fire and the steam shuts off air.
　 (D) water can be changed into steam.
　
8) Gasoline fires cannot be put out with ________________.
　 (A) sand
　 (B) water
　 (C) chemicals
　 (D) extinguishers
　
9) If you put water into the tank of gasoline, ______.
　 (A) gasoline would sink to the bottom of the tank. .
　 (B) gasoline would be mixed with water
　 (C) water would float on the top of gasoline.
　 (D) water would not be mixed with gasoline.

10) The best title of the passage would be______________.
　 (A) Water, Sand and Chemicals
　 (B) How to Put Out a Fire with Water
　 (C) How to Put Out a Fire.
　 (D) Don't Use Water to Put Gasoline Fires.

Passage 3

　　It is not necessary to write in order to send messages. In the old days, people who could not write used to send messages to one another in many different ways.

　　The Indians used smoke to send signals. They made a fire and put wet grass on it. Then they covered the fire with a wet blanket. After a few moments, they took the blanket away again. This made a cloud of smoke. They could send simple messages in this way. One cloud of smoke meant, “Danger”. Two clouds meant, “ Everything is all right.” Three clouds meant, “Help”.

　　In the thick forest of Africa , it used to be difficult to travel from village to village. But drums could be heard from many miles away. People in this part of the world discovered that they could use their drums for sending messages. They did not use a special code like the Morse Code. They made their drums “speak” like people. They did this by playing tunes that sounded like simple sentences in their languages.

　　The Incas of South America never developed a way of writing their language, but they used to send messages by trying knots in rope. Men used to run with such knotted ropes from town to town along the Inca roads. Many of these rope messages have been found, but nobody can understand what they mean.

11) In the old days, people____________.
　 (A) couldn't write
　 (B) wrote in order to send messages
　 (C) used different ways to send messages
　 (D) couldn't send messages
　
12) Which of the following took place first when Indians used smoke to send messages?
　 (A) They put a wet blanket on the fire.
　 (B) They covered the fire with wet grass.
　 (C) They removed the blanket
　 (D) They used smoke to send messages
　
13) ________used to send messages by playing tunes on drums
　 (A) Africans
　 (B) Indians
　 (C) Incas
　 (D) People in the old days
　
14) Which of the following is true according to the passage?
　 (A) People in forests of Africa used different ways to send messages.
　 (B) The Indians used drums to send messages.
　 (C) The Incas of South America only developed a way of sending messages with drums.
　 (D) Nobody now can understand what the Incas meant by trying knots in rope.

15) The best title of the passage would be __.
　 (A) Different Peoples
　 (B) Different ways
　 (C) Smoke, Drums and Ropes
　 (D) Sending Messages.