B. have been substantially modified through the introduction of
the economic of human resources
C. have been virtually unaffected by health economics or the
economic of human resources
D. gave great importance to the idea of human investment
Tigers grow to lengths of ten feet or more and can be bigger than the largest lion. They have huge strength. They clutch their prey to them holding on with their claws, and depend on the crushing bite of their powerful jaws to end the struggle. They swim very well and can often be seen splashing about in water on very hot days since they apparently suffer from the heat. When the air is chilly, however, they avoid wet or damp vegetation. They can climb but do not approach the leopard's ability in this. They can negotiate treacherous rocky areas but generally prefer to 156
stay on level ground. They are not as well equipped with senses as one might expect. They apparently depend on their hearing while hunting. Their eyesight is not particularly good, and they seem unable to spot their prey until it moves.
19. It is implied in the passage that tigers ___.
A. rely on their huge claws alone to catch and kill their prey.
B. are the most skilful climbers of all wild animals.
C. are sensitive to significant variations in temperature.
D. closely resemble lions as regards size, speed and strength.
20. As is pointed out in the passage, a flat terrain ____.
A. is usually the favoured habitat of the tiger.
B. rather than rocky cliffs gives tigers better opportunities for hiding.
C. provides camouflage for leopards.
D. is usually wet, so tigers prefer higher levels.
21. From the passage we infer that contrary to what is generally thought, ___.
A. once a prey starts to move a tiger can rarely catch it.
B. hearing is the least developed sense of the tiger
C. the leopards hunting ability is far behind that of the tiger.
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