Part science and part natural history,
ornithology(鸟类学) owes its tremendous popularity as a science and a scientific
recreation to a simple circumstance that is sometimes forgotten when we weigh
the eligibility(有被选资格,合适)of different kinds of animals for informal study. Birds
are day animals where others, just as engaging in their way—mice, for
instance—are creatures of the night. Apart from their visibility (something very
much in their favor), the beauty of birds and their many appealing habits have
won for them a huge fan following that has more than once tempted impatient and
ill-informed laboratory biologists to dismiss ornithology as so much
bird-watching—an absurdly unjust judgment that ignores the fact that ornithology
has made a number of profoundly importa A. Birds are widely studied because they are popular in the home. B. Ornithology has made important contributions to biology. C. Professional biologists often engage in bird-watching for recreation. D. Animal behavior is best studied by observing birds.
[单项选择]Savitskiy works for a company that imports spare parts for foreign cars, a thriving business. A. booming B. blooming C. dooming D' glooming
[单项选择]At 90, many individuals still remain healthy and {{U}}energetic{{/U}}. A. intelligent B. rough C. robust D. revivable
[单项选择]We can take control aggressively of the way we age and delay body {{U}}deterioration{{/U}} that causes activities to be severely limited. A. regeneration B. depression C. degeneration D. repression
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