1. S₁: During the Middle Ages the manufacture of cloth was divided amongst a number of associations of skilled workers who performed different operations required ih its production.
S₆: This was one of the reasons why the industry flourished in such rich countries as Flanders, Italy and Britain.

P: But the association of skilled workers lacked capital to buy it.
Q: Consequently, he began to assume the role of ther employer.
R: With the mechanisation of these operations, complicated apparatus became necessary for economic production.
S: The banker, therefore, stepped in to finance the industrialisation of these operations.

2. S₁: Different countries show different patterns of growth.
S₆: Compared to this in Europe the growth rate is low.

P: Many, others have a high birth rate with a low death rate.
Q: Some have a high birth rate and still have a high death rate.
R: The developing countries show the most rapid growth rate.
S: Some others like the European nations, have a low birth rate and a low death rate.

3. S₁: Widowhood in India used to be specially miserable.
S₆: Today nobody looks upon remarriage of widows with disgust or disapproval.

P: There were widows even in ages ranging from five to ten.
Q: A widow was a widow always.
R: However, several communities began to rebel against the illtreatment of widows.
S: She could not marry ugain however tender in age she might be.

4. S₁: The 'age of computers' is considered to have begun in 1946.
S₆: And now it is difficult to find a field where computers are not used.

P: Those early computers were huge and heavy affairs, with problems of speed and size.
Q: It was only with the introduction of electronics that the computers really came of age.
R: But computers were in use long before that.
S: They had several rotating shafts and gears which almost always doomed them to slow operation.

5. S₁: Hungary, with a population of about ten million, lies between Czechoslovakia to the north and Yugoslavia to the south.
S₆: The new industries derive mainly from agricultural production.

P: Here a great deal of grain is grown.
Q: In recent years, however, progress has been made also in the field of industrialisation.
R: Most of this country consists of an extremely fertile plain, through which the river Danube flows.
S: In addition to grain, the plain produces potatoes, sugar, wine and livestock.

6. S₁: Production of c6ins starts with the buying of unmixed metals and their testing by the Assay Department.
S₆: The blanks are heated to soften them, then rolled so that the rim is raised, and are stamped with the design of the coin.

P: These ingots are reheated until the temperature is hot enough f6r hot rolling.
Q: During this stage, the ingots pass through a series of rollers until they form long, thin sheets which are the thickness of a coin.
R: From these thin strips, blank discs are punched.
S: Then the metals are alloyed in oil fired or electric arc furnaces, and cast into ingots 40 cm wide, 15 cm thick and 6 m long.

7. S₁: The path of Venus lies inside, the path of the Earth.
S₆: When at, its brightest, it, is easily seen with the naked eye in broad daylight.

P: When at its farthest from the Earth, Venus is 160 million miles away.
Q: With such a wide range between its greatest and least distances it is natural that at sometimes Venus appears much brighter than others.
R: No other body ever comes so near the Earth, with the exception of the.Moon and an occasional comet or asteroid.
S: When Venus is at its nearest to the Earth, it is only 26 million miles away.

8. S₁: Man has existed for about a million years.
S₆: What its future effects will be is a matter. of conjecture, but possibly a study of its effects hitherto may make the conjecture a little less hazardous.

P: Science' as a dominant factor in determining the beliefs of educated men, has existed for about 300 years; as a source of economic technique, for about 150 years.
Q: When we consider how recently it has risen to power, we find ourselves forced to believe that we are at the very beginning of its work in transforming human life.
R: In this brief period it has proved itself an incredibly powerful revolutionary force.
S: He has possessed writing for about 6,000 years, agriculture somewhat longer, but perhaps not much longer.

9. S₁: In the present day it is not necessary that generals or great officers should fight with their own hands, because it is their duty to direct the movements of their followers.
S₆: Robert Bruce was so remarkably active and powerful that he came through manypersonal dangers.

P: But in the ancient times, kings and great lords were obliged to put themselves into the very front.
Q: Therefore, it was of great consequence that they should be strong men and dexterous in the use of their arms.
R: The artillery and the soldiers shoot at the enemy, and men seldom mingle and fight hand to hand.
S: They fought like ordinary men with the lance and other weapons.

10. S₁: Of the various kinds of insect defences that of the North American fungus - eating beetle is quite unusual.
S₆: The beetle's chemical secretion keeps the deer mouse at bay.

P: Both ants as well as mammals such as deermice feed on this beetle.
Q: This little beetle is able to recognize the kind of predator coming towards it and accordingly adopts a suitable defence.
R: When facing a deermouse, the beetle secretes an irritant from certain glands in its abdomen.
S: While the beetle simply rolls itself into a compact ball in the face of an ant attack, it copes with the deer mouse differently.