剑桥雅思真题10 test4雅思听力Section4答案解析

发布时间:2017-01-17 15:27

  剑10test4雅思听力Section4答案解析:

  Question 31 C

  听前预测:定位词为one problem。

  题目解析:讲座中说纳米科技遇到了teething problems(初期问题),紧跟着就是出题句:And with nanotechnology, society often gets the wrong idea about its capabilities.(关于纳米技术,人们对它的性能絲雜),故本题选C。

  Question 32 B

  听前预测:定位词为scientists、nano-particles。

  题目解析:本题定位至 Some scientists recommend that nano-particles be treated as new chemicals with separate safety tests and clear labelling.(―些科学家建议纳米粒子应该经过单独的安全测试,并贴上清晰的标签,4为一种新的化学物质来看待),故本题选B。

  Question 33 C

  听前预测:定位词为research into nanotechnology。

  题目解析:本题较难,要理解出题句才能选出答案。But as far as I’m concerned there’s a need to plough ahead with the discoveries and applications of nanotechnology.(就我而言,需要推进纳米技术的全展和应用),因此选C。

  Question 34 metal/metals

  听前预测:定位词为Transport、development,提示词为stronger,此处应填名词。

  题目解析:定位至“…a major breakthrough in the field of transportation with the production of more durable metals”一句,more durable为题干中stronger的同义替换,因此本题答案为metal(s)。

  Question 35 space

  听前预测:定位词为Planes、weight,提示词为travel,此处应填名词或形容词。

  题目解析:本题出题句为:…dramatically reduce the cost of travelling into space making it more accessible to ordinary people(极大地降低了成本,使更多的普通大众可以进行太空旅行)。accessible to ordinary people为题干中available to the masses的同义替换,故本题答案为space。

  Question 36 memory

  听前预测:定位词为Computers、smaller, faster、greater,提示词为a,此处应填名词(单数)。

  题目解析:smaller在原文中的同义替换为minute size,出题句为:…a new generation of computer! that will work even faster and will have a million times more memory but will be about the size of a sugar cube (新一代的电脑会运行得更快,存储量会更大,但储存器的体积大约只有糖块大小),故此题填memory。

  Question 37 solar

  听前预测:定位词为并列结构,联系上下文,提示词为energy,此处应填名词或形容词。

  题目解析:根据The cost of solar cells will be drastically reduced so harnessing this energy will be far more economical than at present,题干中more affordable在原文中的同义替换是far more economical,“this energy”指前面的solar,因此solar为答案。

  Question 38oil

  听前预测:定位词为Pollutants,提示词为such as,此处应填名词。

  题目解析:Pollutants(污染物)在原文中同义替换成了contaminants—词,找到原句:nanotechnology will allow us to remove oil and other contaminants from the water far more effectively (纳米技术将使我们从水中消除油污和其他污染物变得更有效),故本题填oil。

  Question 39 waste

  听前预测:定位词为并列结构,联系上下文,提示词为no,此处应填名词。

  题目解析:出题句为:In terms of production, this means that you only use what you need and so there wouldn’t be any waste.”其中“In terms of production ”意为“就生产而言”,同义替换了题干中的manufacturing,而 there wouldn’t be any与题干中的 There will be no对应,因此本题填waste。

  Question 40 tests

  听前预测:定位词为Analysis,提示词为medical,此处应填名词。

  题目解析:原文出现了Analysis的动词analyse,定位至原句:…tiny biosensors are developed to analyse tests in minutes rather than days(生物传感器变得更加发达,可以在几分钟内分析出测试结果,而不再需要几天的时间),因此tests即为答案。

 

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