咨询热线: 021-52986736
地址:上海市徐汇区文定路218号德必徐家汇WE艺术湾B座207咨询热线: 010-82194388
地址:北京市朝阳区雅宝路7号 E园EPARK大厦415咨询热线: 020-87589724
地址:广州天河区华穗路406号保利克洛维中景大厦B座2407室咨询热线: 027-87132585
地址:武汉市珞喻路889号光谷融众国际写字楼23层2302室咨询热线: 028-64442708
地址:四川省成都市锦江区春熙路街道梓潼桥正街25号西部文化产业中心8楼咨询热线: 0571-87244618
地址:杭州市江干区江锦路159号 平安金融中心B座9楼咨询热线: 023-63261757
地址:重庆市渝中区邹容路68号大都会广场16楼1603-1604室咨询热线: 400-600-1123
地址:深圳市南山区玉泉路116号融创毅哲大厦咨询热线: 0532-80903870
地址:青岛市市南区南京路8号 府都大厦909室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?
A
The decline in the alligator population has meant that fishers can work in some parts of lakes and rivers that were formerly too dangerous.
B
Over the last few years, Parland's commercial fishing enterprises have increased the number of fishing boats they use.
C
The main predator of these fish is another species of fish on which alligators also prey.
D
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.
E
In several neighboring countries through which Parland's rivers also flow, alligators are at risk of extinction as a result of extensive hunting.
申友解析
题目:P地鳄鱼数量最近几年一直在下降,主要由于对鳄鱼的猎杀。而鳄鱼喜欢捕食的淡水鱼是P地居民所喜爱的食物,那么P地居民就希望鳄鱼数量的减少能带来淡水鱼数量上升这个结果。但是淡水鱼数量也减少了,还是在当地居民没有增加淡水鱼消费量的情况下。
题干:解释鱼群数量下降这个现象。
分析:显性的EXPLAIN,直接判断是引入他因型正向逻辑。
A选项说鳄鱼数量下降会使得渔民可以在之前危险的地方进行作业,题目中已经排除了人为因素对鱼群数量的影响,不能忽视或者否定原文给定的信息。
B选项说P地的渔业企业增加了捕鱼船的数量,跟A选项问题一样。
C选项说鳄鱼不仅仅吃淡水鱼,同时也吃另一种喜欢捕食淡水鱼的物种,那么鳄鱼数量减少,这里所说的另一种喜欢捕食淡水鱼的物种数量会上升,能够导致淡水鱼数量下降这个结果。正确!
D选项讨论为什么要捕杀鳄鱼,与题目论点无关。
E选项说邻国鳄鱼濒临灭绝,None of our business…
申友留学APP
上海(总部)服务中心
地址:上海市徐汇区文定路218号德必徐家汇WE艺术湾B座207
北京服务中心
地址:北京市朝阳区雅宝路7号 E园EPARK大厦415
广州服务中心
地址:广州天河区华穗路406号保利克洛维中景大厦B座2407室
武汉服务中心
地址:武汉市珞喻路889号光谷融众国际写字楼23层2302室
成都服务中心
地址:四川省成都市锦江区春熙路街道梓潼桥正街25号西部文化产业中心8楼
杭州服务中心
地址:杭州市江干区江锦路159号 平安金融中心B座9楼
重庆服务中心
地址:重庆市渝中区邹容路68号大都会广场16楼1603-1604室
深圳服务中心
地址:深圳市南山区玉泉路116号融创毅哲大厦
青岛服务中心
地址:青岛市市南区南京路8号 府都大厦909室
我的留学方案