2020年7月英语四级选词填空真题答案

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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 __26__ predators，killer whales may not fit the __27__ of a cultured creature. However, these beasts of the sea do display a vast range of highly __28__ behaviors that appear to be driving their genetic development.

The word “culture” comes from the Latin “colere,” which __29__ means “to cultivate.” In other words, it refers to anything that is __30__ 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 __31__ that help them digest and utilize this fat-rich diet, thereby allowing them to __32__ in their cold climate.

Like humans, killer whales have colonized a range of different __33__ across the globe, occupying every ocean basin on the planet, with an empire that __34__ 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. This, in turn, has a major effect on their diet, leading scientists to __35__ that the ability to learn population-specific hunting methods could be driving the animals’ genetic development.

A） acquired

B） adaptations

C） brutal

D） deliberately

E） expressed

F） extends

G） habitats

H） humble

I） image

J） litereally

K） refined

L） revolves

M） speculate

N） structure

O） thrive

参考答案：

26. C As one of the most brutal predators

27. I may not fit the image of a cultured creature

28. K a vast range of highly refined behaviors

29. J which literally means "to cultivate"

30. A it refers to anything that is acquired or learnt

31. B have developed certain genetic adaptations that...

32. 0 thereby allowing them to thrive in their cold climate

33. G a range of different habitats across the globe

34. F with an empire that extends from pole to pole

35. M leading scientists to speculate that...