問題詳情

III. 篇章結構： 10%Suppose you are an animal. Well, actually, you are an animal, but suppose you’reanother kind of animal, maybe something small that might make a tasty snack for a largerpredator. You’re walking along one day when you see a big dog. What do you do? 56A skunk can spray a noxious liquid that will repel predators. A cat can make its hair stand onend so that it seems larger than it is. 57 There’s another strategy all these animalshave, though. 58 They can freeze. When a squirrel or a rabbit or a chipmunkfreezes, it can remain almost entirely motionless for minutes at a time. Try it yourself.Whatever position you’re in right now, move nothing at all for the next minute. It’s not soeasy! The reason an ability to freeze works as a defense is that a predator’s attack behaviormay actually be triggered by motion. 59 Pass one of those flies in front of itseyes on a little string, though, and it will automatically gulp it down. 60Evolution has caused the freeze strategy to come into existence precisely because it fits in withthe way the visual systems of predators operate.
(A) A frog, for example, will literally starve to death in a box full of dead flies.
(B) A wolf will not attack prey that stands motionless.
(C) Or some animals, such as opossums, may pretend to be dead already.
(D) Well, depending on what kind of animal you are, you have different options.
(E) You’ve seen it before, but maybe never thought about it.(AB) The response is similar to paralysis but characterized by waxy flexibility.(AC) The response to freeze is completely hard-wired, so freezing shows us something aboutboth predator and prey.
56

參考答案

答案：[無官方正解]
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)

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