标题: t-9-q19 [打印本页] 作者: mndd 时间: 2011-2-4 09:42 标题: t-9-q19 请问此题如何理解In 1992 outlaw fishing boats began illegally harvesting lobsters from theterritorial waters of the country of Belukia. Soon after, the annual tonnage oflobster legally harvested in Belukian waters began declining; in 1996, despitethere being no reduction in the level of legal lobster fishing activity, thelocal catch was 9,000 tons below pre-1992 levels. It is therefore highly likelythat the outlaw fishing boats harvested about 9,000 tons of lobster illegallythat year.
Which of the following is an assumption on which the argument depends?
The illegal lobster harvesting was not so expensive that the population of catchable lobsters in Belukia’s territorial waters had sharply declined by 1996
The average annual lobster catch, in tons, of an outlaw fishing boat is has increased steadily since 1992.
Outlaw fishing boats do not , as a group, harvest more lobsters than do licensed lobster-fishing boats.
The annual legal lobster harvest in Belukia in 1996 was not significantly less than 9,000 tons.
A significant proportion of Belukia’s operators of licensed lobster-fishing boats were out of business between 1992 and 1996作者: huangyouhuifei 时间: 2011-2-4 22:48
是选B吗~~~~~作者: mndd 时间: 2011-2-8 23:08
选a