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题库 / OG2017V-CR-126
Nutritionists are advising people to eat more fish, since the omega-3 fatty acids in fish help combat many diseases. If everyone took this advice,however, there would not be enough fish in oceans, rivers, and lakes to supplythe demand; the oceans are already being overfished. The obvious method to ease the pressure on wild fish populations is for people to increase their consumption of farmed fish.
Which of the following, if true, raises the most serious doubt concerning the prospects for success of the solution proposed above?
Aquaculture, or fish farming, raises more fish in a given volume of water than are generally present in the wild.
Some fish farming, particularly of shrimp and other shellfish, takes place in enclosures in the ocean.
There are large expanses of ocean waters that do not contain enough nutrients to support substantial fish populations.
The feed for farmed ocean fish is largely made from small wildcaught fish, including the young of many popular food species.
Some of the species that are now farmed extensively were not commonly eaten when they were only available in the wild.
吃饲养的鱼 ----解决海里鱼太少的问题
C 有很大片海域没有足够的营养支撑庞大的鱼群数量。 没提到方案吃饲养的鱼
CQ1
错选C 直接选了C 没看D 看下D 应该能排除C ，，，，，， C 大部分区域不能 可以养一些人工 或者其他厂房之类养殖
C为什么不对啊？
我觉得是这样的。原题希望的是通过farm fish来减轻在海洋里面捕鱼的压力，然后题目让我们削弱这种方案。
C选项虽然说很多海域不能承受高强度的养鱼，但总体还是可以一定一定可以减轻捕食海鱼的压力的，方案的目标是达成了的。
D选项就很直接，养鱼会导致海里的自由鱼数量下降，与方案的目标是相反的。
C其实就是无关选项。没有规定farmed fish就是养在海中的。 C是给出了一个 为什么there would not be enough fish in oceans, rivers, and lakes to supplythe demand 的原因。
方案题： 目的：to supply the demand
方案：人工养鱼
采用方案的原因: wild fish not enough
weaken方案评估有三类：削弱方案可行性，提出方案是否不可满足目的，提出方案副作用
D是削弱方案可行性，即无法人工喂养
C选项仔细看一下和这个问题采用人工养殖而不是放养没有本质的联系
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