The Northern Pike is a very bad fish.It is a big，hungry fish，and eats little fish.Many Northern Pike live in Lake Davis.Theyare killing all the smaller fish in the lake.TheNorthern Pike area serious danger to the lake because they eat all the smallerfish.Soon，all other kinds offish in the lake will be killed off.This is not healthyfor the environment(环境).Researchers are afraid that the Northern Pike，will swim out of LakeDavis through many smaller rivers that feed into the lake.They could spread all over the country and damage many other waterenvironments.If that happens，itwould be too late to stop the Northern Pike.For ten years.officials have been trying to remove theNorthern Pike from Lake Davis.They have tried usingnets and poisons(毒药).However，the Northern Pike population is still doing well in Lake Davis.Many people do not like the idea of using poison to kill the fish.They worry that the poisons are bad for humans who use the water.However，people haven’t found any poisons atall in local(当地的)wells.Scientists are going to try the poison again.This time，they will dry off the lake before puttingthepoison in.Apublic hearing will be held to talk about the problem.
　　1、A public hearing will beheld because __.
　　A.localpeople object to the use of poisons
　　B.the NorthernPike have spread to other lakes
　　C.peopleare strongly against drying off the lake
　　D.theharm of the Northern Pike is seldom heard of
　　参考答案：A
　　参考解析：题干意为“将要召开向公众开放的听证会是因为什么?”由文章第三段可知，人们反对用毒药毒杀白斑狗鱼，因为害怕人们使用的井水受到污染。而第四段第一句话指出科学家打算再次尝试用毒药消灭白斑狗鱼，由此可以推出，召开听证会的原因是当地居民反对使用毒药，为此要征求大家的意见。故A为正确答案。
　　2、This text is most probably __.
　　A.ashort story
　　B.anews report
　　C.flresearch paper
　　D.anofficial announcement
　　参考答案：B
　　参考解析：题干意为“这篇文章的体裁可能是什么?”由文章叙述的口吻可知文章是从观察者的角度来客观陈述戴维斯湖面临的一个问题，由此可推断文章体裁最有可能是一篇新闻报道，故B为正确答案。
　　3、What was the result ofusing poisons in Lake Davis?
　　A.Peoplestopped using the well water.
　　B.Thelake was seriously damaged.
　　C.Thepoisons worked as expected.
　　D.Therewere hardly any effects.
　　参考答案：D
　　参考解析：题干意为“在戴维斯湖使用毒药的结果是什么?”由文章第三段第二、三句“They havetried using Nets and poisons.However，the Northern Pike population is still doingwell in Lake Davis.”可知，毒药对白斑狗鱼没有产生任何效果。故I)为正确答案。
　　4、What could happen if theNorthern Pike swim out of Lake Davis?
　　A.Theycould be out of control.
　　B.Thesmaller fish would be saved.
　　C.Theenvironment could be improved.
　　D.Manysmall rivers would be poisoned.
　　参考答案：A
　　参考解析：题干意为“如果白斑狗鱼游出戴维斯湖将会发生什么?”由文章第二段可知，如果白斑狗鱼游出戴维斯湖将会遍布全国，给更多的水域造成危害，到那时再阻止它们就来不及了。由此可知，如果任由它们游出戴维斯湖，则会失去对它们的控制。故A为正确答案。
　　参考译文：
　　北梭子鱼是一种非常不好的鱼。它是一种大而饥饿的鱼，吃小鱼。许多北梭子鱼生活在戴维斯湖。它们正在杀死湖中所有的小鱼。然后，北梭子鱼区严重威胁湖中，因为它们吃了所有的小鱼。很快，湖中所有其他种类的鱼都会被杀死。这对人类来说是不健康的。环境。研究人员担心，北梭子鱼会从湖边游出，穿过许多流入湖中的小河。它们会扩散到全国各地，破坏许多其他的水环境。如果发生这种情况，阻止北梭子鱼为时已晚。十年来，官员们一直在试图从戴维斯湖移走北梭子鱼。他们尝试使用药剂和毒物。然而，北梭子鱼在戴维斯湖的生活仍然很好。许多人不喜欢用毒素杀死鱼的想法。他们担心毒素对用水的人有害。然而，人们没有在当地的水井里没有发现任何有毒物质。科学家们将再次尝试这种毒液。这次，他们将在把毒液注入湖中之前把湖中的水擦干。将举行一次无障碍听证会来讨论这个问题。