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语法填空 | 原创题:克隆雪貂

 大一一小安安 2022-09-19 发布于福建

今天我们的选材出自高中云英语公众号的原创题。

  练一练  
American scientists recently announced the first cloning of an endangered animal native to the United States. A black-footed ferret(雪貂) was created from the cells of an animal that died over 30 years ago.
__1__(official) from the U.S. Fish and Wildlife Service said the ferret, named Elizabeth Ann, was born on December 10. She is a genetic reproduction of a black-footed ferret named Willa __2__ died in 1988. Willa's remains __3__(freeze) in the early days of genetic technology. Such use of cloning aims to one day bring back animal species that have died out. The black-footed ferret project is part of a __4__(wide) effort to build up the population of the endangered animal.
Noreen Walsh is the __5__(direct) of the National Black-footed Ferret Conservation Center in Northern Colorado. __6__ center is part of the Fish and Wildlife Service. In announcing the successful cloning, she said in a statement "it provides a __7__(promise) tool for continued efforts to conserve the black-footed ferret."
In the future, scientists hope to make changes to genes __8__(help) cloned animals survive. "__9__ these cloning methods, you can basically freeze time and regenerate those cells," said Pete Gober, who leads the black-footed ferret recovery effort for the Fish and Wildlife Service. He added that __10__ reaching that level of genetic engineering might take a long time, he is hopeful it will be possible.


参考答案


  备注  

这篇文章大意是美国鱼类及野生动物管理局宣布首次克隆出濒危动物——一只黑足雪貂。据悉,该黑足雪貂是通过一只死于三十多年前雪貂的冷冻基因及一只“代孕妈妈”的帮助成功完成克隆。

题目设置上,4处无提示词,6处有提示词(4个动词、1个名词、1个形容词)。动词提示词占最多,其中考察1处谓语动词(第3题一般过去时被动语态),1处词性转化(第5题动词变名词)和2处非谓语动词(第7题现在分词作定语;第8题不定式做状语。总体难度较大。部分难题具体分析如下:

第1题解题时要注意,此处的 official 并非形容词“公职的;官方的”,而是作为名词,表示“官员”,指人,故此题考查的是名词的单复数形式。同学们解题时有个依据是大多数的情况下“可数名词不以其单数形式单独出现”,使用单数形式时,需要冠词、形容词性物主代词或者其他限定词修饰。此处的 official 位于句首,没有修饰,故用复数形式。

第2题考查定语从句的引导词。此题有点灵活,原句把动物拟人化,使用了人称代词 she 而非 it,故指代时使用 who。给同学们的提示是,选择代词时一定要观察上下文的代词使用,保持一致。

第3题考查了谓语动词的时态语态。这道题比较难在于要分析出此句中的 Willa's 中的 's 是名词所有格,其后的 remains 为名词(复数形式),意味“遗体,遗骸”。所以,此处需要的是谓语动词。句中的时间状语 in the early days 表明过去,遗体和冻结的关系为被动,故使用一般过去时的被动形式 were frozen。

第7题考查现在分词做定语。promising 也可直接记成形容词,意味“大有可为的,有希望的”,如:The results of the first experiments are very promising. (第一次实验的结果充满了希望. )It's a promising sign. (这是个很好的迹象。);如果用来形容人,表示“有出息的,有前途的”,如:a promising young pianist (有前途的青年钢琴家)。

第10题考查连词。这道题难在句子比较长,横线前面又有一个 that 可能会影响同学们思考。通过划分句子结构可以得出,这个长句由三个简单句构成:He added / that __10__ reaching that level of genetic engineering might take a long time, / he is hopeful it will be possible. 我们可以根据三个谓语动词(added, might take, is)判断出来此句包含三个简单句,其中的 that 用于引导 added 后面的宾语从句,再根据语法规则可知此处应该填一个连词,把宾语从句种的两个简单句连接起来。结合上下文,两句应该是让步关系,意为 虽然/尽管达到那个水平的基因工程可能需要很长时间,他对可能性抱有希望”,故答案为 while/although/though。

本篇语法填空文本改编自高中云英语公众号的原创题——语法填空 克隆雪貂感兴趣的同学可以去做一下这一篇。

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