An overly centralized economy, not the changes in the climate, is responsible for the poor agricultural production in Country X since its new government came to power. Neighboring Country Y has experienced the same climatic conditions, but while agricultural production has been falling in Country X, it has been rising in Country Y.
Which of the following, if true, would most weaken the argument above?
你这道题是不是打错了,应该是paid its reporters an average salary lower than that paid by its principal,这样应该就理解了吧, 这家报社付的薪水比竞争报社的少,还说是合理的,因为虽然钱少了点,(shortfall that might exist in the reporters's salaries), 但是因为给他们提供了valuable training through assignments所以他们也得到补偿了。 问的是削弱
首先就如LS所说,A不是一个必须的assumption,题目只是说限制了污染,所以鸟的数量上升,没规定一定是工业的污染 而E选项在另一方面是必须的,The increased sightings of bird species in and around London reflect an actual increase in the number of species in the area. E选项消除了一个可能,那就是原文中说的鸟的increase可能是暂时的,也许正好这个时候有一大批鸟飞了过来,可能呆两天就走了,那就不能说明这个限制污染是有效果的。 E取非削弱,所以是一个必须的假设