博智教育，GMAT培训，每日一题。
指导教师，英吉
The Eurasian ruffe, a fish species inadvertently introduced into North America's Great Lakes in recent years, feeds on the eggs of lake whitefish, a native species, thus threatening the lakes' natural ecosystem. To help track the ruffe's spread, government agencies have produced wallet-sized cards about the ruffe. The cards contain pictures of the ruffe and explain the danger they pose; the cards also request anglers to report any ruffe they catch.
Which of the following, if true, would provide most support for the prediction that the agencies' action wi have its intended effect?
(A)The ruffe has spiny fins that make it unattractive as prey.
(B)Ruffe generally feed at night, but most recreational fishing on the Great Lakes is done during daytime hours,
(C)Most people who fish recreationally on the Great Lakes are interested in the preservation of the lake whitefish because it is a highly prized game fish.
(D)The ruffe is one of several nonnative species in the Great Lakes whose existence threatens the survival of lake whitefish populations there.
(E)The bait that most people use when fishing for whitefish on the Great Lakes is not attractive to ruffe.
题目分析：原文比较简单，说有一个外来的鱼种威胁当地生态系统，政府印了一些卡片发给钓鱼的，让这些钓鱼的随时报告。问支持。A说这种鱼的鳍对于捕食者不吸引人，没说，干掉。B说这种鱼晚上觅食，但是钓鱼的一般白天钓鱼，那给钓鱼的发卡就没用了，不是支持，杀。C说钓鱼的对于保护当地生态系统和鱼类热情很高，那发卡就有用，留着。D说这种鱼是威胁本土鱼类的外来物种之一，这么并没有支持政府的那个计划，就是把原文背景说了一遍，不行，杀。E说掉本土鱼类的饵料对于ruffe来说不好吃，扯得很远了，杀。
