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题库 / Prep2012-CR-47
Mayor: Migrating shorebirds stop at our beach just to feed on horseshoe-crab eggs, a phenomenon that attracts tourists. To bring more tourists, the town plans to undertake a beach reclamation project to double the area available to crabs for nesting.
Birdwatcher: Without a high density of crabs on a beach, migrating shorebirds will go hungry because shorebirds only eat eggs that a crab happens to uncover when it is digging its own nest.
Which of the following, if true, would provide the mayor with the strongest counter to the birdwatcher's objection?
Every year a certain percentage of crabs are caught by fishermen as bait for eel traps.
Horseshoe crabs are so prolific that given favorable circumstances their numbers increase rapidly.
On average, tourists who come to the town in order to watch birds spend more money there than tourists who come for other purposes.
The additional land made available by the reclamation project will give migrating shorebirds more space.
Some of the migrating shorebirds make only one stop during their migration from South America to Canada.
做题的时候做对了但是完全没有正确的体会到这个题的含义
Mayor：建议开垦出更多的area以供螃蟹nesting
Birdwatcher：（注意体会density密度的含义）如果crab的密度不高的话，bird会饿（言下之意不会来了）。==》（意思是在反驳mayor的提议，如果扩大了area，那么density就会下降）
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