三.文意選填： 20% ( 1% for each) (AB) reviews(AC) fools(AD) fake(AE) defense(BC) revives(BD) offense(BE) curls(CD) foul　　Many animals pretend to be dead as a way to survive certain situations. Scientists call this __54__ mechanism tonic immobility. When an animal pretends to be dead, it doesn’t just stop moving. Its heart and breathing rates slow down, and its body temperature drops. When this happens, the animal remains conscious. It __55__ itself when the danger is gone. The best known example is the opossum. This furry creature __56__ up and sticks out its tongue when it feels threatened. It also gives off a __57__ smell. The attacker leaves because it thinks the opossum is dead and rotting. The opossum then gets up and runs away. That’s where we get the phrase “playing possum.” Ducks, chickens, rabbits, and certain snakes also __58__ death to survive. Researchers have even found that some baby sharks still inside their eggs can sense the electric field of an attacker and play dead.
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