2015年高级会计师职称英语考试理工类A级练习题(6)

来源: 高顿网校 2015-04-22
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  阅读理解:请根据短文内容,为每题确定1个a1选项。
  Genetically Modified Foods
  If you want to spark a heated debate at a dinner party,bring up the topic of genetically modified foods.For many people,the concept of genetically altered,high-tech crop production raises all kinds of environmental,healthy,safety and ethical questions.Particularly in countries with long grain traditions-and vocal green lobbies--the idea seems against nature.
  In fact,genetically modified foods are already very much a part of out lives.A third of the corn and more than half the soybeans and cotton grown in the U.S.last year were the product of biotechnology,according to the Department of Agriculture.More than 65 million acres of genetically modified crops will be planted in the U.S.this year.The genetic genie ( 妖怪 ) is out of the bottle.
  Yet there are clearly some very real issues that need to be resolved.Like any new product entering the food chain,genetically modified foods must be subjected to rigorous testing.In wealthy countries,the debate about biotech is tempered by the fact that we have a rich array of foods to choose from and a supply that far exceeds our needs.In developing countries desperate to feed fast-growing and underfed populations,the issue 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 U.N.estimates that nearly 800 million people around the world are undernourished.The effects are devastating.About 400 million women of child-bearing age are iron deficient,which means their babies are exposed to various birth defects.As many as 100 million children suffer from vitamin A deficiency,a leading cause of blindness.
  How can biotech help? Biotechnologists have developed genetically modified rice that is fortified with beta-carotene-which the body converts into vitamin A and additional iron,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 pests,drought,poor soil and crop viruses,bacteria or fungi.
  31.What's the passage mainly about?
  A.The world's food problems.
  B.The new advancement in biotech.
  C.The characteristics of genetically modified foods.
  D.How biotech can help solve the world's food problems.
  参考答案:C
  参考解析:
  【解析】*9段*9句话就提到转基因食品是引起人们争论的热门话题,紧接着说明人们争论的原因、转基因食品的现状、转基因食品带给人们的益处。选项A,B和D虽与文章内容有关,但都没有突出转基因食品这一中心。
  32.According to the passage,genetically modified foods__________
  A.are superior to naturally grown foods
  B.might prove to be risky to human health
  C.are going to replace naturally grown foods
  D.can solve the food problems in developing countries
  参考答案:B
  参考解析:
  【解析】文章中根本没有就“genetically modified foods”和“naturally grown foods”做比较,也没有说“genetically modified foods”将取代“naturally grown foods”,因此A、C项错。根据文章*9段第二句话,转基因、高技术含量的农作物生产向人们提出了各种各样的有关于环境、健康、安全及伦理(违反自然规律)问题,以及第三段最后一句话:生物技术带来的益处是否超过其所带来的风险?由此可推断转基因食品也许会对人们的健康有害,B正确。D错在于文中并没有说转基因食品能帮助解决发展中国家人们的粮食短缺及营养不良问题。
  33.The sentence "The genetic genie is out of the bottle." in Para.2 probably means__________
  A.the genetic genie,the key technology in producing genetically modified foods,is out in the market
  B.the genetic technology has come out of laboratories into markets
  C.genetically modified foods are available everywhere
  D.technology with which to produce genetically modified foods may have powers unpredictable or uncontrollable by man
  参考答案:D
  参考解析:
  【解析】语义推断题。*9段开门见山地指出转基因食品的潜在问题,第二段说明转基因食品已成为我们生活的一部分,介绍了转基因农作物在美国生产的现状,而第三段*9句话又提出:仍有一些问题需要解决。因此可推断此句是指基因技术的负面作用,D正确。此句借助于童话《渔夫与妖怪》的故事。
  34.According to the passage,biotech can help solve the problem by__________
  A.producing foods that contain more nutrients needed by human beings
  B.creating more varieties of foods
  C.producing beta-carotene and vitamin A more efficiently
  D.producing anti-virus crops
  参考答案:A
  参考解析:
  【解析】根据最后一段,生物技术的作用在于:一是加强农作物营养含量,二是提高农业生产率,所以A项符合题意。
  35.The author's attitude toward genetically modified foods is__________
  A.enthusiastic
  B.cautious
  C.disapproving
  D.optimistic
  参考答案:B
  参考解析:
  【解析】作者态度题。文章一开始就指出转基因食品引发了各种各样的问题,也提到了其带给人们的益处,即有利有弊,可见作者对待转基因食品的态度是非常慎重的(cautious),既没有十分热心(enthusiastic)、乐观(optimistic),也没有反对(disapproving)。
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