2019高考英语一轮复习Unit1Talesoftheunexplained牛津译林版必修2

Unit 1 Tales of the unexplained一、阅读理解Nowadays more and more people are talking about genetically modified foods ( GM foods). GM foods develop from genetically modified organisms (有机体), which have had specific changes introduced into their DNA by genetic engineering techniques. These techniques are much more precise where an organism is exposed to chemicals to create a nonspecific but stable change. For many people, the hightech production raises all kinds of environmental, ethical, health and safety problems. Particularly in countries with long farming traditions, the idea seems against nature.In fact, GM foods are already very much a part of our lives. They were first put on the market in 1996. A third of the corn and more than half the cotton grown in the U. S. last year was the product of biotechnology, according to the Department of Agriculture. More than 65 million acres of genetically modified crops will be planted in the US this year. The genetic genie is out of the bottle.However, like any new product entering the food chain, GM foods must be subjected to careful testing. In wealthy countries, the debate about biotech is not so fierce by the fact that they have a large number of foods to choose from, and a supply that goes beyond the needs. In developing countries desperate to feed fastgrowing and underfed populations, the matter is simpler and much more urgent: do the benefits of biotech outweigh the risks?The statistics on population growth and hunger are disturbing. Last year the world's population reached 6 billion. The UN states that nearly 800 million people around the world are unhealthy. About 400 million women of childbearing age don' t have enough iron, which means their babies are exposed to various birth defeats.As many as 100 million children suffer from vitamin A deficiency, a leading cause of blindness.How can biotech help? Genetic engineering is widely used to produce plants and animals with better nutritional values. Biotechnologists have developed genetically modified rice and they are working on other kinds of nutritionally improved crops.Biotech can also improve farming productivity in places where food shortages are caused by crop damage attributable to drought, poor soil and crop viruses.1.The passage mainly talks about________.A. the world's food problemB. the development in biotechC. the genetically modified foodsD. the way to solve food shortages2.According to the passage, GM foods________.A. will replace naturally grown foodsB. are far better than naturally grown foodsC. may help to solve the problem of poor nutritionD. can cause serious trouble in developing countries3.The underlined sentence “The genetic genie is out of the bottle.” in Paragraph 2 probablymeans that________.A.GM foods are available everywhereB. the technology in producing GM foods is advancedC. genetic technology may have uncontrollable powersD. genetic technology has come out of laboratories into markets4.What's the writer's attitude towards GM foods?A. Enthusiastic.B. Cautious.C. Disapproving.D. Unbelievable.【文章大意】本文是一篇说明文，主要介绍了转基因食品及其对人类生活的影响。

1.C 【解析】主旨大意题。

根据文章内容，特别是第一段中的“Nowadays more and more peopleare talking about genetically modified foods ( GM foods).”可知，本文主要介绍的是转基因食品。

2.C 【解析】细节理解题。

根据最后一段中的“Genetic eng ineering is widely used to produceplants and animals with better nutritional values.”可知，转基因食品有助于解决营养不良问题。

4.B 【解析】观点态度题。

根据第三段中的“However, like any new product entering thefood chain, GM foods must be subjected to careful testing.”可知，作者认为转基因食品进入市场前需要严格的检测，由此可见作者对转基因食品的态度是谨慎的。

二、词汇练习1. a cat with a lot of brown _________a brown and ________ creature (毛茸茸的，多毛的)2.build up one’s _____________________ mutual trust between us （力量；力气；加强）3.Chris does not believe in the __________ of Father Christmas. （存在）He doesn’t believe that such a strange creature __________ on the earth.4.Miss took an eye ____________ so that the doctor could __________ what was wrongwith her eyes. （检查）5.burst out ___________burst into ___________ （笑）6.It is __________ that he will show up at tomorrow’s conference.There is no ____________ that he will be fired by the company.（可能）7.I have been finding many websites about aliens and other __________.Why the president died suddenly remained ___________.（神秘的事或人；神秘的）8.He made a __________ that he would support the newly-elected president.（声明；陈述）The topic of how to learn a foreign language has well been _________in this book.9.________ a trip to Australia （组织）He set up an __________ to protect the environment.10.The teacher is very __________. （幽默；幽默的）We all like listening to the stories with fun and a lot of __________.11.The fish measures 100 centimeters in ___________. It is very ___________（长；长度）12.Could you tell me how you ___________ the big earthquake ?the miraculous ___________ of some people in the air crash (幸存)。