Parland’s alligator population has been declining in recent years, primarily because of hunting. Alligators prey heavily on a species of freshwater fish that is highly valued as food by Parlanders, who had hoped that the decline in the alligator population would lead to an increase in the numbers of these fish available for human consumption. Yet the population of this fish species has also declined, even though the annual number caught for human consumption has not increased.
Which of the following, if true, most helps to explain the decline in the population of the fish species?
The decline in the alligator population has meant that fishers can work in some parts of lakes and rivers that were formerly too dangerous.
Over the last few years, Parland’s commercial fishing enterprises have increased the number of fishing boats they use.
Many Parlanders who hunt alligators do so because of the high market price of alligator skins, not because of the threat alligators pose to the fish population.
During Parland’s dry season, holes dug by alligators remain filled with water long enough to provide a safe place for the eggs of this fish species to hatch.
In several neighboring countries through which Parland’s rivers also flow, alligators are at risk of extinction as a result of extensive hunting.
Answer:
问题分析：A说这种东西数量变少意味着渔夫能在一些危险的地方工作，没提，干掉。
B说捕鱼船数量增加，无关。
C说这个地方的人捕猎这种动物的原因是什么，捕猎原因原文没提，干掉。
D说alligator的某些行为对鱼是有好处的，原文说干掉alligator，现在这个选项说干掉的这个东西对鱼有好处正好能解释原文，至于hole bug以及充满水等内容都是出题者演绎的，可以演绎成别的内容。
E说别的国家，范围与原文没交集，无关。
