高考英语一轮复习Module5TheConquestoftheUniverseCloning课时作业提升练外研版选修6
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Module 5 The Conquest of the Universe Cloning
(建议用时40分钟)
Ⅰ. 阅读理解
A
(2017·亳州模拟)
Have you seenJurassic Park? In this film, scientists use DNA kept for tens of
millions of years to clone dinosaurs. They find trouble, however, when they realize
that the cloned creatures are smarter and more dangerous than expected. That’s
nothing more than a fiction.
But could we really clone endangered animals?
To date, the most successful attempt to do so was the cloning of a gaur, a rare
ox-like animal from southeast Asia. Scientists used a cow to bring the cloned baby
gaur, named Noah. Two days after birth, however, Noah died from a common bacterial
infection. Other endangered species that may be cloned include the African bongo
antelope(羚羊), the Sumatran tiger, the cheetah(猎豹), and the giant panda.
Next, could we really clone extinct animals?
In theory? Yes. To do this, you need a well-kept source of DNA from the extinct
animals such as a woolly mammoth(毛象), a Tasmanian tiger, or even a dinosaur, and
a closely related species, still living, which could serve asa surrogate mother.
In reality? Probably not. On the one hand, it’s not likely that extinct
animals’DNA could survive undamaged for such a long time. Cloning extinct animals
as a woolly mammoth, a Tasmanian tiger, or a dinosaur is much more difficult due
to the lack of properly well-preserved DNA. On the other hand, for example, a gaur
can have a cow as a surrogate mother, definitely not a monkey. But what about an
extinct animal as unique as the panda? What species could possibly serve as a
surrogate mother?
Cloning presents many exciting possibilities. However, even if extinct animals
are brought back, they could not survive in today’s world. Not only do most extinct
animals have no habitat to live in, but the other plants and animals they depended on for food may also be gone as well.
【文章大意】本文主要讲了作者对克隆动物的看法。
1. It can be learned from the text that______.
A. scientists have cloned the African bongo antelope
B. both the bongo antelope and the giant panda live in Asia
C. the gaur lives in Asia and is endangered
D. the gaur is an extinct species
【解析】选C。细节理解题。根据第三段的To date, the most successful attempt to do
so was the cloning of a gaur, a rare ox-like animal from southeast Asia. 可知, gaur是生活在东南亚的一种稀有的动物。故选C。
2. The underlined words“a surrogate mother”in Paragraph 5probably refer to a
female who______.
A. contributes its eggs to another female
B. gives birth to a baby for another female
C. gives birth to a baby of its own
D. cannot give birth to a baby
【解析】选B。词义猜测题。根据语境可知, a surrogate mother指代孕母亲, 故选B。
3. The difficulty in cloning an extinct species is the lack of______.
A. both the well-preserved DNA and plants to live on
B. both the habitat to live in and the well-preserved DNA
C. both the habitat to live in and plants to live on
D. both the well-preserved DNA and a surrogate mother
【解析】选D。推理判断题。根据第六段的内容, 克隆灭绝的物种的困难就是缺乏保存完好的灭绝动物的DNA和代孕母亲。故选D。
4. In the author’s opinion, it is possible that______.
A. some extinct species may be cloned, but not survive
B. extinct species may be cloned and easily survive
C. a gaur can have a monkey as a surrogate mother
D. all the extinct species may be cloned
【解析】选A。细节理解题。根据最后一段内容可知, 作者认为, 即使能克隆灭绝的动物, 它
