题目内容
15.The world has a fast growing population and people need more land for houses,factories,highways,and so on.The farmland is decreasing with each passing day.How to meet the need of feeding the growing population?One way is to introduce some high-output gene into a crop to enable it to produce more.Biologists over the years have discovered genes which can raise output of the crops,resist pests,improve taste,etc.However,in many western countries there is widespread concern over the safety of"Genetically Modified"(GM) (转基因) foods,because they think there may be serious problems of environment,health,safety,morality and so on.
As a scientist I must admit GM foods involve great risks to humans.In fact in Europe they're called"Frankenstein foods"by many.Frankenstein is a character in a novel.He was a very clever scientist.He created a monster(怪物),which eventually killed him.
Soybeans can be made into many fooJds.However,it's hard to trace them.Therefore,it's very important we have to make sure the soybean,if genetically modified,is free from any poisonous matter harmful to human beings.For this we need very good testing.We do have some testing on some animals,but no completely satisfactory testing has ever been made so far.They're entirely new,and their problems are entirely unknown.It takes time to develop persuasive tests to know whether they're harmful to us or not.
We may not be able to tell what may happen if we take GM foods.Some of them may be resistant to antibiotics (抗生素).Then many of the medicines we have today will have no effect on people eating GM foods.
A more likely case is the GM foods may contain genes some people are allergic to.
GM products have already come into our lives but most people even know nothing about it.At least we have to be clear about what we are eating.The China Consumers Association is calling for labeling (标注) on GM foods so that consumers will know before they buy them.
32.From the passage we can infer thatC.
A.Frankenstein foods can make people clever
B.B.GM foods are very popular in Europe
C.many Europeans reject GM foods
D.Frankenstein was a scientist creating GM foods
33.The underlined phrase"trace them"in Paragraph 4probably means"".C
A.find their market
B.raise their quality
C.find their origins
D.enjoy their taste
34.Which of the following is TRUE about GM foods?B
A.The testing shows GM soybean foods are free from poisonous matter.
B.Sometimes consumers can hardly tell GM soybeans from natural ones.
C.GM foods prove to be safe to humans after some testing on animals.
D.GM foods problems have been known after testing on animals.
35.What can we learn from the passage?C
A.GM foods make antibiotics fail to function properly.
B.People eating GM foods will suffer from food allergies.
C.People should be informed of which foods are GM foods.
D.As GM foods are safe at present,they're certainly safe later on.
分析 本文介绍基因产品,世界人口迅速增长.人们需要更多的土地和房屋、工厂、公路等.
解答 32:C推断题.由第三段第二句"In fact in Europe they're called'Frankenstein foods'by many"可知,在欧洲很多人把转基因食品称为"弗兰肯斯食品".由第三段最后两句"He was a very clever scientist.He created a monster(怪物),which eventually killed him."可知,弗兰肯斯坦是一个小说中的聪明人物,但创造怪物,并最终被其创造的被怪物所杀.故 Frankenstein foods 意为"弗兰肯斯(恶魔)食品",所以很多欧洲人对转基因食品持否定、怀疑态度,故C项正确,
33:C 推断题.由划线词前一句"Soybeans can be made into many foods."可知,大豆可以被制成多种食品,结合第四段第三句"it's very important we have to make sure the soybean,if genetically modified,is free from any poisonous matter harmful to human beings"可知,如果是转基因大豆,我们就必须保证它不含有对人体有害的物质.因此可以推测,划线句意为"然而很难确定它们的来源",此处的"它们"即指大豆制品,即此处指的是,很难确定这些大豆制品是否是由转基因大豆制成的,故C项"找到它们的来源"符合文意.
34:B 细节题.由第四段前两句"Soybeans can be made into many foods.However,it's hard to trace them."可知,豆类食品被加工成多种食品,很难查出其原材料,即只知道是豆类制作,并不能区别出是自然豆类还是转基因豆类,所以B项正确.
35:C 细节题.由最后一段最后一句"The China Consumers Association is calling for labeling(标注) on GM foods so that consumers will know before they buy them."可知,消费者应该被告知哪些食物是转基因食物,所以D项正确.
点评 本文是一个科教类阅读理解,题目涉及多道细节理解题,做题时结合原文和题目有针对性的找出相关语句进行仔细分析,结合选项选出正确答案.推理判断题也是要在抓住关键句子的基础上合理的分析才能得出正确答案,切忌胡乱猜测,一定要做到有理有据.
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