Forget chip fat, sugar cane or rapeed oil — the latest source of biofuel could

题文

Forget chip fat, sugar cane or rapeed oil — the latest source of biofuel could be watermelons. Scientists have discovered that the fruit is a great source of sugar that can be readily distilled (蒸馏) into alcohol to power cars and farm machinery.And llers reject 360,000 tons of “substandard” fruit every year in America alone which could be ud as an economical way to make fuel. The waste from US growers could produce nearly two million gallons (nine million litres) of biofuel per year.In the study, rearchers at the United States Department of Agriculture t out to determine the biofuel potential of juice from rejected watermelons —tho not sold due to cosmetic imperfections, and currently ploughed back into the field. about a fifth of each yearly watermelon crop is left in the field becau of surface blemishes (瑕疵) or becau they are misshapen.Dr. Wayne Fish, who led the team, found that 50 percent of the fruit was fermentable (可发酵的) into alcohol which could provide valuable fuel.“We’ve shown that the juice of the watermelons is a source of readily fermentable sugars, reprenting an unexploited raw material for alcohol biofuel production,” he said.The study, published in the journal Biotechnology for Biofuels, discovered that watermelons could produce around 20 gallons of fuel per acre from fruit that otherwi would go to waste.Production of biofuels has been targeted by Western governments as a way to support renewable energy targets.The European Union has a target for 2010 that 5.75 percent of transport fuels should come from biological sources, but the target is unlikely to be met.The British government’s Renewable Transport Fuel Obligation requires five percent of the fuel sold at the pump by 2010 to be biofuel.小题1:The passage mainly tells us ______.A．watermelon juice will be the largest source of renewable energyB．the advantages of fuel made from watermelonsC．Western countries aim at producing biofuelsD．watermelons could be ud to make fuel小题2: It can be learned from the text that ______.A．about two gallons of fuel could be made from rejected fruit per acreB．llers in the world throw away 360,000 tons of watermelons every yearC．half of the watermelons were fermentable into alcohol to provide energyD．five percent of fuel is required to be biofuel from watermelons by 2010 in Britain小题3:The underlined word “cosmetic” in Paragraph 3 probably means ______. A．freshB．sweetC．surfaceD．inside小题4:We can infer from the passage that ______.A．it will cost a lot to make biofuel from watermelonsB．Western countries are engaged in biofuel study but still have a long way to goC．watermelon juice has been ud as a source of sugars to produce alcohol biofuelD．the European Union is likely to meet its target of transport fuels from biological sources 题型：未知难度：其他题型

答案

小题1:D小题2:C小题3:C小题4:B

解析

小题1 这篇文章主要讲的是西瓜可以被用来当做燃料。A、B答案不完全 C应该是“The European Union has a target for 2010 that 5.75 percent of transport fuels should come from biological sources”目标是实现运输燃料来自生物源。小题2  A原文倒数第二段watermelons could produce around 20 gallons of fuel per acre；B第二段第一句话llers reject 360,000 tons of “substandard” fruit every year而不是throw away；C正确原文第四段found that 50 percent of the fruit was fermentable  into alcohol which could provide valuable fuel.；D在原文最后一段意思与原文不符。小题3 通过后面“is left in the field becau of surface blemishes (瑕疵) or becau they are misshapen.”可知文章是说由于外表有瑕疵，故为C小题4 原文倒数第二段说“but the target is unlikely to be met”故C、D错误；文章第二段可找出专家使用“substandard”fruit，这是一种经济的方式，故A错误；B是说西方国家所从事的生物燃料研究仍有很长的路要走。

考点

据考高分专家说，试题“Forget chip fat, sug.....”主要考查你对 [健康环保类阅读 ]考点的理解。 健康环保类阅读

健康环保累阅读概念：

健康环保类文章常是介绍科学知识、生活常识和环境保护方面的短文。体裁有记叙文、 说明文、议论文和各种应用文。

健康环保类文章阅读技巧：

   健康环保类文章常是介绍科学知识、生活常识和环境保护方面的短文。阅读此类短文要以现象或事物为中心进行思考，理解现象产生的原因、条件和客观规律等。同时要抓住事物的特征、用途和相互关系等。科普环保类文章一般为说明文，从结构上看大致可分为三个部分：   第一部分一般是文章的首段，主要用来提出文章的主题，即文章想要阐述、说明的主要内容；   第二部分是文章的主体，可由若干个段落组成，对文章的主题进行展开说明；   第三部分是结尾段，对文章的主题进行归纳总结。这类文章多用一般现在时，而且一般多使用客观性词语表述。有时为了强调客观性，也常使用被动语态。   从近几年的考试题来看，科普环保类的文章越来越与人们的实际生活相接近。由于此类文章缺乏故事情节，很多同学对此类文章感到费解。但一般的科普类文章都是就事论事，需要逻辑推理和想象的时候较少，因此此类阅读题也没有同学们想象中的那么难，只要多加训练，就能较好地答题。【阅读策略】 1、概要(Summarizing)：  阅完材料后，将所阅材料浓缩，摘要，做出所阅材料的书面或口头梗概。 2、组织(Organization)：  阅读后根据阅读内容，识别观点、人物、事件之间的关系以及文章的结构关系。如：时间关系、比较或对比关系、相关关系及因果关系等。