单选题
A controversial decision on whether choice cuts of steak and cartons of milk produced from cloned animals are suitable for the dinner table is now long overdue.
Hundreds of pigs, cows and other animals created with the help of cloning are living
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farms across the United States and
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the forthcoming ruling will directly
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American consumers, British holidaymakers may also
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themselves at the forefront of a food revolution that many commentators expect will
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arrive here.
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the birth of Dolly the sheep-the first mammal cloned from an adult cell--there were extreme predictions of herds of genetically
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bulls and pastures
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with cloned dairy cows.
That double
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of the past decade has not yet been realized
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clones have become a familiar sight at agricultural fairs in America, where producers of
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pigs and cattle have been among the first to
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cloning, which offers a way to keep
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traits without inbreeding problems caused by traditional methods. Clones of rare and elite animals, including sheep, goats, and rabbits,
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a way to improve animal healthy,
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the nutritional value of meat and milk, and breed animals immune
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diseases or better suited for developing countries.
The safety of cloned
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has been under examination by various bodies. Three years ago the US National Academy of Science concluded that
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available data indicated that cloning met animal welfare and food safety considerations, more information was needed.
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scientific evidence suggests that there is little
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for alarm, at least on food-safety grounds.
【答案解析】[解析] 语义衔接题。本段首句提到克隆动物在美国已相当普遍，因此对于克隆动物是否可以安全使用的裁定必将直接影响到美国，因此本题应选affect意为“影响”。避错指导：affect，touch，influence，impress这些动词都表示产生心理或情感上的影响。affect是指作用于人的感情，如：The adverse criticism the book received didn"t affect the author one way or another．对这本书的敌对性评论丝毫没有影响该作家。touch通常指激起一种温柔的反应，例如爱、感激或激情，如：The tributes to the two deceased musicians were fitting and touching．献给两位已故音乐家的颂辞恰如其分，感人至深。move暗指深刻的情感效果，有时导致行动或具有进一步后果，如：The account of her experiences as a refugee moved us to tears．她的难民经历感动得我们热泪盈眶。impress是指产生一种显著的、深刻的，通常是持久的效果：The Tibetan landscape particularly impressed him．西藏的风光给他留下了非同寻常的印象。
【答案解析】[解析] 短语辨析题。本句追溯第一只成功克隆的哺乳动物克隆羊多莉，而新生事物的出现必然会引起各种论争。正确选项in the wake of意为“尾随，紧跟”，原句指自从克隆羊多莉出现，就有了种种预测。避错指导：in advance of意为“在…前面，超过”；at a time意为“每次，在某时”；for reasons of意为“因为”。
【答案解析】[解析] 词汇辨析题。本段讲到克隆羊多莉的出现引起了极端的推测，认为克隆动物将大行其道，遍布各地；dotted意为to cover with or as if with dots“点缀，用或似用点布满”，原句的意思是克隆奶牛将遍布各个牧场，因此选[C]。避错指导：cover意为“覆盖，掩盖”；mark意为“做标记于，标志”；scatter意为“分散，散开”；这三个词均不符合题意。