rubbish. Chickens kept in this way are not only tasteless as food; but also produce eggs which lack important vitamins.
There are other aspects of healthy eating which are now receiving increasing
attention from experts on diet. Take, for example, the question of sugar. This is
actually a nonessential food! Although a natural alternative, such as honey, can
be used to sweeten food if this necessary, we can in fact do without it. It is
not that sugar is harmful in itself. But it does seem to be additive: the quantity
we use has grown steadily over the last centuries and in Britain today each person consumes an average of 200 pounds a year! Yet all it does is provide us with energy, in the form of calories. There are no vitamins in it, no minerals and nofiber.
It is significant that nowadays fiber is considered to be an important part
of a healthy diet. In white bread, for example ,the fiber has been removed. But
it is present in unrefined flour and of course in vegetables. It is interesting
to note that in countries where the national diet contains large quantities of unrefined flour and vegetables, certain diseases are comparatively rare. Hence the emphasis is placed on the eating of whole meal bread and more vegetables by modern experts on “healthy eating”.
21.Which statement best expresses the main idea of this article?
A) People should eat any food to keep themselves healthy and strong.
B) People should eat natural foods to keep themselves healthy and strong.
C) People should eat fiber foods to keep themselves healthy and strong.
D) People should eat vegetables to keep themselves healthy and strong.
22.“Particularly processed foods” means ____.
A) foods which are particularly processed by adding chemical additives
B) foods which are particularly made by commercial farms
C) foods which are specially produced by commercial factories
D) foods which are not specially made by adding anything
23.Natural foods means ____.
A) foods good for health
B) foods not good for health
C) foods such as vegetables, fruit and grain from rich organic matters soil
D) crops from rich organic matters soil and meats of animals from healthy
pastures
24.There are no vitamins, no minerals and no fibers in ____.
A) natural foods C) sugar
B) animal meats D) fruit
25.“Yet all it does is provide us with energy, in the form of calories.” It means ____.
A) processed food provides us with energy
B) natural food furnishes us with vitamins and minerals
C) sugar gives us enough energy in the form of calories
D) fiber helps us to digest food
Questions 26 to 30 are based on the following passage:
With a tremendous roar from its rocket engine, the satellite is sent up into
the sky. Minutes later, at an altitude of 300 miles, this tiny electronic moon begins to orbit about the earth. Its radio begins to transmit an astonishing amount
