2. 外语
  3. Just because they can’t sing opera or ride a bicycle doesn’t mean that animals don’t have culture. There’s no better example of

Just because they can’t sing opera or ride a bicycle doesn’t mean that animals don’t have culture. There’s no better example of

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问题    Just because they can’t sing opera or ride a bicycle doesn’t mean that animals don’t have culture. There’s no better example of this than killer whales. As one of the most【C1】______predators (食肉动物), killer whales may not fit the【C2】______of a cultured creature. However, these beasts of the sea do display a vast range of highly【C3】______behaviors that appear to be driving their genetic development.
   The word " culture" comes from the Latin " colere," which【C4】______means " to cultivate. " In other words, it refers to anything that is【C5】______or learnt, rather than instinctive or natural. Among human populations, culture not only affects the way we live, but also writes itself into our genes, affecting who we are. For instance, having spent many generations hunting the fat marine mammals of the Arctic, the Eskimos of Greenland have developed certain genetic【C6】______that help them digest and utilize this fat-rich diet, thereby allowing them to【C7】______in their cold climate.
   Like humans, killer whales have colonized a range of different【C8】______across the globe, occupying every ocean basin on the planet with an empire that【C9】______from pole to pole. As such, different populations of killer whales have had to learn different hunting techniques in order to gain the upper hand over their local prey (猎物). This, in turn, has a major effect on their diet, leading scientists to【C10】______that the ability to learn population-specific hunting methods could be driving the animals’genetic development.
   A) acquired I) image
   B) adaptations J) literally
   C) brutal K) refined
   D) deliberately L) revolves
   E) expressed M) speculate
   F) extends N) structure
   G) habitats O) thrive
   F) extends N) structure
   H) humble
【C9】
选项
答案F
解析 动词辨析题。空格所在句是由that引导的定语从句，从句中缺少谓语，因此应填人动词，而且先行词是an empire，本文通篇用的是一般现在时，因此应填人动词的第三人称单数。空格所在句意思是“……占据着地球上的每一处海洋盆地，其王国从南极______至北极。”结合前文可知，虎鲸从南极到北极都有分布。因此本空应填人含有“扩展、延伸”意义的动词的第三人称单数，故本题答案为F)extends“延伸，延长”。另外一个动词的第三人称单数L)revolves不符合句意，因此排除。
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大学英语四级

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