扫描二维码，直接登录
题库 / Prep2012-CR-62
In 1992 outlaw fishing boats began illegally harvesting lobsters from the territorial waters of the country of Belukia. Soon after, the annual tonnage of lobster legally harvested in Belukian waters began declining; in 1996, despite there being no reduction in the level of legal lobster fishing activity, the local catch was 9,000 tons below pre-1992 levels. It is therefore highly likely that the outlaw fishing boats harvested about 9,000 tons of lobster illegally that year.
Which of the following is an assumption on which the argument depends?
The illegal lobster harvesting was not so extensive 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 has increased 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 went out of business between 1992 and 1996.
逻辑链：1992年非法的渔船开始非法捕捞龙虾——合法捕捞的龙虾量开始下降——1996年即使合法捕捞龙虾的活动规模没有减小——当地的捕捞量比1992年之前少了9000吨——因此很可能非法渔船那一年非法捕捞了9000吨——前提：非法捕捞的量没有大到可捕捞的龙虾数量迅速下降——和1992年之前有同等数量的龙虾可以捕捞——才能说明少掉的龙虾是被非法捕捞走了。
登录 或 注册 后可以参加讨论