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  3. Since life began eons ago, thousands of creatures have come and gone. Some,

Since life began eons ago, thousands of creatures have come and gone. Some,

游客2024-01-02  49
问题     Since life began eons ago, thousands of creatures have come and gone. Some, such as the dinosaurs, became extinct due to naturally changing ecologic conditions. More recent threats to life forms are humans and their activities. Man has drained marshes, burned prairies, dammed and diverted rivers. Some of the more recent casualties of man’s expansion have been the dodo, great auk, passenger pigeon, Irish elk, and Steller’s sea cow. Sadly, we can no longer attribute the increasing decline in our wild animals and plant species to "natural" processes. Many species are dying out because of exploitation, habitat alteration or destruction, pollution, or the introduction of new species of plants and animals to an area. As mandated by Congress, protecting endangered species, and restoring them to the point where their existence is no longer jeopardized, is the primary objective of the U.S. Fish and Wildlife Service’s Endangered Species Program. [br] Which of the following has become extinct due to man’s destruction ?
选项 A、African elephant.
B、Irish elk.
C、Giant panda.
D、White Bengal.
答案 B
解析 见文中第五句：Some of the more recent casualties of man’s expansion have been the dodo；great auk，passenger pigeon，Irish elk．and Steller’s sea cow．近期人类扩张所造成的一些受害者有：渡渡鸟、大海雀、候鸽、爱尔兰麋鹿及Steller’s海象。本题所问：“由于人类破坏已经灭绝的物种是……”，应为“爱尔兰麇鹿”。
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