三、文意選填: (每題 1 分，共 10 分，請根據文意選出一個最佳的答案) 
(A) The undersea world isn’t as quiet as we thought, according to a New Zealand researcher. Fish can“talk” to each other and make noises by vibrating their swim bladder, an internal gas-filled organ used asa(n) ___66___ chamber to produce or receive sound.      Fish are believed to speak to each other for a number of reasons, such as to attract mates, ___67___predators, or give directions to other fish. Damsel fish, for example, have been found to make sounds toscare off threatening fish and even divers. Another discovery about fish sounds is that not all fish areequally “talkative.” Some species talk a lot, while others don’t. The gurnard species has a wide vocal___68___ and keeps up a constant chatter. Codfish, on the other hand, usually keep silent, except whenthey are laying eggs. Any goldfish lover who hopes to ___69___ a conversation with their pet goldfish isout of luck. Goldfish have excellent hearing, but they don’t make any sound ___70___. Their excellenthearing isn’t associated with vocalization. 
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