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试题内容

        It was 10 years ago, on a warm July night, that a newborn lamb took her first breath in a small shed
in Scotland. From the outside, she looked no different from thousands of other sheep born on(1)farms. But Dolly, as the world soon came to realize, was no( 2)lamb. She was cloned from a singlecell of an adult female sheep,(3)long-held scientific dogma that had declared such a thingbiologically impossible.
  A decade later, scientists are starting to come to grips with just how different Dolly was. Dozens ofanimals have been cloned since that first lamb_mice, cats, cows and, most recently, a dog--and it'sbecoming   (4)clear that they are all, in one way or another, defective.ctive.
   It's (5)to think of clones as perfect carbon copies of the original. It turns out, though, tha!there are various degrees of genetic(6). That may come as a shock to people who have paidthousands of dollars to clone a pet cat only to discover that the baby cat looks and behaves (7)liketheir beloved pet--with a different-color coat of fur, perhaps, or a(8)different attitude toward itshuman hosts.
  And these are just the obvious differences. Not only are clones(9)from the original template(模板) by time, but they are also the product of an unnatural molecular mechanism that turns out not to bevery good at making (10)copies. In fact, the process can embed small flaws in the genes of clonesthat scientists are onlv now discovering.

A.abstract   
B.completel
C.deserted 
D.duplication
E.everything
F.identical  
G.increasingly
H.miniature 
I.Nothing
J.ordinary
K.overturning
L.separated
M.surrounding
N.systematical  
O.tempting

1.[选词填空]
    • 解题思路:分析句子结构可知,本空应填入名词,且能与genetic搭配。本句意思是有各种各样不同程度的基因__________,能够被9enetic修饰的应该是比较专业的名词,且与基因有关,备选词中只有duplication“复制”最合适,故为答案。
    2.[选词填空]
      • 解题思路:空格位于making之后,名词copies之前,故应填入形容词作定语。copies意为“复制品,副本”,克隆的过程就是复制相同的副本,故备选形容词中符合要求的为identical“完全相同的”。
      3.[选词填空]
        • 解题思路:空格前是一个完整的句子,空格后为由that引导的定语从句修饰的名词短语,故推测空格处应是分词作状语。由后半句可知,科学教条主义认为从生物学角度上来说克隆是不可能实现的,而前半句却阐述了克隆羊出生的事实。备选项中,overturning“推翻”符合句子前后逻辑关系,故为答案。
        4.[选词填空]
          • 解题思路:本句基本结构完整,故空格处应该填入副词修饰clear。此处句意为:__________清晰的事实是这些克隆动物都会在某个方面存在缺陷。备选副词中符合要求的有completely和increasingly。但由文章最后一句可知,科学家们现在才开始发现,这个过程会让克隆物的基因中嵌入一些细微的瑕疵,故排除completely。综上所述,本题答案为increasingly“不断增加地”。
          5.[选词填空]
            • 解题思路:空格前为no,后为名词lamb,因此空格处需要填入形容词修饰lamb。由下一句可知,这是一只克隆羊,再结合句首的But可知,此处要表达的是多利与其他的羊不同。备选形容词中,ordinary“普通的”符合句意,故为答案。
            6.[选词填空]
              • 解题思路:空格位于名词farms前面,介词on后面,故应该填入形容词作定语。此处句意为:多利从外表看并没有和__________农场上的其他许多羊有任何区别。备选形容词中符合要求的只有surrounding“附近的,四周的”。备选形容词ordinary具有较大的干扰性,但若填入ordinary则强调多利出生时所在的“农场”与众不同,这与文章要表达的“多利”本身与众不同在意思上有所出入,故排除0rdinary。
              7.[选词填空]
                • 解题思路:本句基本结构完整,故空格处应填一个副词修饰different。破折号后面的内容是阐述克隆猫和本体的不同之处,因此选completely“完全地”,completely different attitude表示“完全不同的态度”,与前面的“不同的毛色”呼应。
                8.[选词填空]
                  • 解题思路:本句基本结构完整,故空格处应填人副词。根据破折号后面的解释,可知克隆动物和本体是不同的,nothing like“一点也不像”符合旬意,故答案为nothin9“一点也不,根本不”。
                  9.[选词填空]
                    • 解题思路:本句是以Not only开头的倒装句,还原成正常语序应是Clones are not only__________fromthe original template by time,but.…故推测空格处应填入形容词或分词,且该词能和from搭配。备选项中,separated“把……区分开来,分清”符合要求,故为答案。
                    10.[选词填空]
                      • 解题思路:空格位于It’S后面,to think of前面,故应该填入形容词,表明“将复制品看作其本体的完美副本”这一想法怎么样。结合本段内容可知,克隆存在这样那样的缺陷,也就是说,这种想法是与事实不相符的,故tempting“吸引人的”符合要求,表示这一想法虽然诱人,但与事实不符。
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                      • 参考答案:C,F,K,G,J,M,B,I,L,O
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