一个JJ里的cr讨论

wofenle

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.

这道题的答案是什么呢？ 请nn指教！！

hgconnie

我选B。大家讨论。

wofenle

这道题的答案到底是Ａ　还是　Ｂ呢？？

Jeffxf

同意师姐意见，B~~

hgconnie

MM,A无关的

wofenle

以下是引用hgconnie在2007-4-23 20:04:00的发言：
MM,A无关的

ptr07

B

yijijuechen

    

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.

A是无关选项，要立刻排除的，不能发散。

应该选B。

Mayer和Birdwatcher的观点是相反的，后者反驳前者时，其理由是without a high density on the bench.

而B就正好推翻了这个说法。

[此贴子已经被作者于2007-4-23 23:17:52编辑过]