歷年公共英語考試二級真題解析

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　　(5)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(環境). 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(毒藥).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(當地的)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.

　　(13)This text is most probably__________.

　　A. ashort story

　　B. anews report

　　C. flresearch paper

　　D. anofficial announcement

　　(14)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.

　　(15)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.

　　(16)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

　　(13) :B白斑狗魚是一種十分有害的魚類。它體型很大，容易饑餓，以捕食其他小型魚類為生。許多白斑狗魚居住在戴維斯湖。它們捕殺那里的小型魚類。白斑狗魚對戴維斯湖造成了嚴重的威脅，因為它們捕食那里的所有小型魚類。不久，湖中的所有其他魚類都會被它們吃光。這對環境來說是不健康的。

　　研究人員擔心白斑狗魚會通過許多匯入戴維斯湖的小河游出戴維斯湖。這樣它們就可能遍布整個國家，危害許多其他的水域。如果這種情況發生，到時再阻止白斑狗魚就太晚了。

　　十年來，官員們試圖將白斑狗魚移出戴維斯湖。他們嘗試用網捕撈和用毒藥毒殺白斑狗魚。但是，白斑狗魚依然在戴維斯湖生活得很好。許多人不贊成用毒藥毒殺白斑狗魚。他們擔心毒藥對同樣使用湖水的人類有害。但是，人們尚未在當地的井水中發現任何毒藥的痕跡。

　　科學家打算再次嘗試毒藥。這一次，他們將會先抽干湖水，然后放入毒藥。為了討論這個問題，將會召開一次向公眾開放的聽證會。

　　推理題。題干意為“這篇文章的體裁可能是什么?”由文章敘述的口吻可知文章是從觀察者的角度來客觀陳述戴維斯湖面臨的一個問題，由此可推斷文章體裁最有可能是一篇新聞報道，故B為正確答案。

　　(14) :A細節題。題干意為“如果白斑狗魚游出戴維斯湖將會發生什么?”由文章第二段可知，如果白斑狗魚游出戴維斯湖將會遍布全國，給更多的水域造成危害，到那時再阻止它們就來不及了。由此可知，如果任由它們游出戴維斯湖，則會失去對它們的控制。故A為正確答案。

　　(15) :D細節題。題干意為“在戴維斯湖使用毒藥的結果是什么?”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，毒藥對白斑狗魚沒有產生任何效果。故I)為正確答案。

　　(16) :A推理題。題干意為“將要召開向公眾開放的聽證會是因為什么?”由文章第三段可知，人們反對用毒藥毒殺白斑狗魚，因為害怕人們使用的井水受到污染。而第四段第一句話指出科學家打算再次嘗試用毒藥消滅白斑狗魚，由此可以推出，召開聽證會的原因是當地居民反對使用毒藥，為此要征求大家的意見。故A為正確答案。

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