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 council 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?
A.Every year a certain percentage of crabs are caught by fishermen as bait for eel traps.
B.Horseshoe crabs are so prolific that given favorable circumstances their numbers increase rapidly.
C.On average, tourists who come to the town in order to watch birds spend more money there than tourists who come for other purposes.
D.The additional land made available by the reclamation project will give migrating shorebirds more space.
E.Some of the migrating shorebirds make only one stop during their migration form South America to Canada.
答案选B，但是没有看明白B和原文推理的关系？？ | 
京公网安备11010202008513号 京ICP证101109号 京ICP备12012021号
发表于 2010-3-5 17:29:01
收藏
收藏
楼主
