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B) provides camouflage for other wild animals
C) rather than rocky cliffs gives tigers better chances to hunt
D) usually has varied vegetation which shelters better prey
E) is usually chilly, so
tigers prefer higher levels
6. From the passage we can infer that, contrary to what is generally thought,
A) climbing is the least developed ability of the tiger
B) as soon as a prey starts to move a tiger can rarely catch it
C) hilly areas are invariably avoided by all wild animals
D) the leopard's hunting ability is much worse than that of the tiger
E) the tiger's senses are not well developed
Psychologists have long sought ways to define and measure human intelligence.
And the theories of
intelligence have grown more sophisticated since the 1800s when some believed mental abilities
were determined by the size of a person's head. However, researchers still do not agree about certain
fundamental principles of human thought. They, therefore, continue to discuss such
basic debates as
whether heredity or the environment is more effective in forming intelligence.
7. As we can understand from the passage, the basic controversy about whether intelligence
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