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剑桥雅思8Test4阅读Passage2答案解析 Biological control of pests 害虫 […]

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剑桥雅思8Test4阅读Passage2答案解析 Biological control of pests 害虫的生物控制

剑桥雅思8阅读四套题目第二篇文章的13道题由4道单项选择,4道YES/NO/NOT GIVEN判断,以及5道特点匹配题构成,属于正常难度。大家在考试中遇到的第二篇文章差不多就是这个样子。下面是具体每道题目的答案解析,以供参考。

点击查看这篇雅思阅读中需要大家掌握的重点词汇与对应的原文翻译

雅思真题阅读词汇 剑桥雅思8 test 4 passage 2 生物防虫法

剑桥雅思8Test4阅读Passage2原文翻译 Biological control of pests 生物防虫法

剑桥雅思8 Test4 Passage2阅读答案解析

第14题答案:B

对应原文:第1段:Apart from engendering widespread ecological disorders …

答案解析:第1段提到,杀虫剂会导致生态失衡,B选项知识将disorders替换成imbalance而已。选项A,C,D都完全没有提到。

第15题答案:A

对应原文:第2段:According to a recent study by the Food and Agriculture Organisation (FAO), more than 300 species of agricultural pests have developed resistance to a wide range of potent chemicals.

答案解析:原文中提到,根据食物与农业组织最近的研究,超过300中农业害虫对多种化学药品产生了抗药性。对应A选项中不再响应大多数正在文章来自老烤鸭雅思使用中的杀虫剂。选项B和D完全没有提到,C选项则是对应后面说的100多种害虫。

第16题答案:D

对应原文:第4段:the farmers avidly took to pesticides as a sure measure to boost crop yield.

答案解析:原文中提到,农民热切的使用杀虫剂作为提成粮食产量的保证。D选项只是用一个句子解释了粮食产量而已。选项A,B,C都完全没有提到。

第17题答案:D

对应原文:第5段:By the mid-1960s, … necessitating pesticide spraying to such an extent that 50% of the financial outlay on cotton production was accounted for by pesticides.

答案解析:虽然每个选项都提到了50%,但原文中说的是花费,只有D选项符合这一意思,由此确定答案。

第18题答案:NOT GIVEN

对应原文:第2段:more than 300species of agricultural pests have developed resistance to a wide range of potent chemicals. Not to be left behind are the disease-spreading pests, about 100 species of which have become immune to a variety of insecticides now in use.

答案解析:原文中确实提到了农业害虫和传播疾病的害虫都对杀虫剂有了抗药性,但两者究竟谁的抗药性出现的更快则并没有任何提及,由此确定答案为NOT GIVEN。

第19题答案:YES

对应原文:第3段:many pests are known to withstand synthetic chemicals and bear offspring with a built-in resistance to pesticides.

答案解析:原文中提到,许多害虫生下来的后代本身就具备对杀虫剂的抗性。题干中born与offspring对应,innate与built-in对应,剩下的基本原词出现。即题干中的所有信息点在原文中都能找到根据,由此确定答案为TURE.

第20题答案:NO

对应原文: 第7段:a more effective and ecologically sound strategy of biological control, involving the selective use of natural enemies of the pest population, is fast gaining popularity- though

答案解析:原文中描述的生物防虫法是作为杀虫剂的替代品,主要通过害虫的天敌来达到控制虫害的目的。可见它并不涉及使用合成化学品,也不想改变害虫后代的基因结构,因此确定答案为NO。

第21题答案:YES

对应原文:第7段:When handled by experts, bio-control is safe

答案解析:原文中提到,在由专家操作时,生物控制是安全的。题干只是将handled by experts替换为under certain circumstances,由此判断答案为YES。

第22题答案:D

对应原文:第9段:CIBC is also perfecting the technique for breeding parasites that prey on ‘disapene scale’ insects – notorious defoliants of fruit trees in the US and India.

答案解析:根据disapene scale定位到第9段的这句话,其破坏对象主要是果树,由此确定答案为D。

第23题答案:H

对应原文:第10段:A natural predator indigenous to India, Neodumetia sangawani, was found useful in controlling the Rhodes grass-scale insect that was devouring forage grass in many parts of the US.

答案解析:根据Neodumetia sangawani定位到这句话,其捕食对象为grass-scale insects,由此确定答案。

第24题答案:C

对应原文:第10段:when Sri Lanka’s flourishing coconut groves were plagued by leaf-mining hispides, a larval parasite imported from Singapore brought the pest under control

答案解析:根据leaf-mining hispides定位到这句话,其食物为coconut groves,由此确定C为答案。

第25题答案:E

对应原文:第10段: is now trying out an Argentinian weevil for the eradication of water hyacinth

答案解析:原文中其实提到Argentinian weevil控制的两种生物:obnoxious parthenium weed和 water hyacinth。前者已经成功,后者正在尝试。而题干问的是may be successful,由此确定后者为答案。

第26题答案:B

对应原文:第10段:the weed Salvinia molesta, popularly called ‘African Payal’ in Kerala. About 30, 000 hectares of rice fields in Kerala are infested by this weed.

答案解析:原文中提到这种虫子的主要祸害对象是稻田,由此确定答案为B。

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